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Zhao Y, Xiong L, Yin J, Zha X, Li W, Han Y. Understanding the effects of flash drought on vegetation photosynthesis and potential drivers over China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 931:172926. [PMID: 38697519 DOI: 10.1016/j.scitotenv.2024.172926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 04/26/2024] [Accepted: 04/29/2024] [Indexed: 05/05/2024]
Abstract
Flash droughts characterized by rapid onset and intensification are expected to be a new normal under climate change and potentially affect vegetation photosynthesis and terrestrial carbon sink. However, the effects of flash drought on vegetation photosynthesis and their potential dominant driving factors remain uncertain. Here, we quantify the susceptibility and response magnitude of vegetation photosynthesis to flash drought across different ecosystems (i.e., forest, shrubland, grassland, and cropland) in China based on reanalysis and satellite observations. By employing the extreme gradient boosting model, we also identify the dominant factors that influence these flash drought-photosynthesis relationships. We show that over 51.46 % of ecosystems across China are susceptible to flash drought, and grasslands are substantially suppressed, as reflected in both sensitivity and response magnitude (with median gross primary productivity anomalies of -0.13). We further demonstrate that background climate differences (e.g., mean annual temperature and aridity) predominantly regulate the response variation in forest and shrubland, with hotter/colder or drier ecosystems being more severely suppressed by flash drought. However, in grasslands and croplands, the differential vegetation responses are attributed to the intensity of abnormal hydro-meteorological conditions during flash drought (e.g., vapor pressure deficit (VPD) and temperature anomalies). The effects of flash droughts intensify with increasing VPD and nonmonotonically relate to temperature, with colder or hotter temperatures leading to more severe vegetation loss. Our results identify the vulnerable ecological regions under flash drought and enable a better understanding of vegetation photosynthesis response to climate extremes, which may be useful for developing effective management strategies.
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Affiliation(s)
- Yue Zhao
- State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan 430072, PR China.
| | - Lihua Xiong
- State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan 430072, PR China.
| | - Jiabo Yin
- State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan 430072, PR China.
| | - Xini Zha
- Changjiang Water Resources Protection Institute, Wuhan 430051, PR China; Key Laboratory of Ecological Regulation of Non-point Source Pollution in Lake and Reservoir Water Sources, Changjiang Water Resources Commission, Wuhan 430051, PR China.
| | - Wenbin Li
- State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan 430072, PR China.
| | - Yajing Han
- State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan 430072, PR China.
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2
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Zhao Y, Xiao L, Tang Y, Yao X, Cheng T, Zhu Y, Cao W, Tian Y. Spatio-temporal change of winter wheat yield and its quantitative responses to compound frost-dry events - An example of the Huang-Huai-Hai Plain of China from 2001 to 2020. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 940:173531. [PMID: 38821277 DOI: 10.1016/j.scitotenv.2024.173531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 04/21/2024] [Accepted: 05/24/2024] [Indexed: 06/02/2024]
Abstract
Extreme climate events such as frost and drought have great influence on wheat growth and yield. Understanding the effects of frost, drought and compound frost-dry events on wheat growth and yield is of great significance for ensuring national food security. In this study, wheat yield prediction model (SCYMvp) was developed by combining crop growth model (CGM), satellite images and meteorological variables. Wheat yield maps in the Huang-Huai-Hai Plain (HHHP) during 2001-2020 were generated using SCYMvp model. Meanwhile, accumulative frost days (AFD), accumulative dry days (ADD) and accumulative frost-dry days (AFDD) in different growth periods of wheat were calculated, and the effects of frost and drought on wheat yield were quantified by the first difference method and linear mixed model. The results showed that wheat yield increased significantly, while the rising trend was obvious at more than half of the regions. Extreme climate events (ECEs) showed a relatively stable change trend, although the change trend was significant only in a few areas. Compared with frost and drought in the early growth period, ECEs in the middle growth period (spring ECEs) had more negative effects on wheat growth and yield. Wheat yield was negatively correlated with spring ECEs, and yield loss was between 4.6 and 49.8 kg/ha for each 1 d increase of spring ECEs. The effects of spring ECEs on wheat yield were ranked as AFDD > AFD > ADD. The negative effect of ADD on wheat yield in the late growth period was higher than that in the other periods. The negative effects of spring ECEs on yield in southern regions were higher than those in northern regions. Overall, due to the adverse effects of frost and drought on wheat yield in the middle and late growth periods, the mean annual yield loss was 6.4 %, among which spring AFD caused the greatest loss to wheat yield (3.1 %). The results have important guiding significance for formulating climate adaptation management strategies.
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Affiliation(s)
- Yanxi Zhao
- National Engineering and Technology Center for Information Agriculture, Key Laboratory for Crop System Analysis and Decision Making, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, 1 Weigang Road, Nanjing, Jiangsu 210095, China
| | - Liujun Xiao
- National Engineering and Technology Center for Information Agriculture, Key Laboratory for Crop System Analysis and Decision Making, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, 1 Weigang Road, Nanjing, Jiangsu 210095, China
| | - Yining Tang
- National Engineering and Technology Center for Information Agriculture, Key Laboratory for Crop System Analysis and Decision Making, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, 1 Weigang Road, Nanjing, Jiangsu 210095, China
| | - Xia Yao
- National Engineering and Technology Center for Information Agriculture, Key Laboratory for Crop System Analysis and Decision Making, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, 1 Weigang Road, Nanjing, Jiangsu 210095, China
| | - Tao Cheng
- National Engineering and Technology Center for Information Agriculture, Key Laboratory for Crop System Analysis and Decision Making, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, 1 Weigang Road, Nanjing, Jiangsu 210095, China
| | - Yan Zhu
- National Engineering and Technology Center for Information Agriculture, Key Laboratory for Crop System Analysis and Decision Making, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, 1 Weigang Road, Nanjing, Jiangsu 210095, China
| | - Weixing Cao
- National Engineering and Technology Center for Information Agriculture, Key Laboratory for Crop System Analysis and Decision Making, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, 1 Weigang Road, Nanjing, Jiangsu 210095, China
| | - Yongchao Tian
- National Engineering and Technology Center for Information Agriculture, Key Laboratory for Crop System Analysis and Decision Making, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, 1 Weigang Road, Nanjing, Jiangsu 210095, China.
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3
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Shafique Ahmad K, Shehzad MA, Javid H, Mehmood A, Akhtar G, Zafar S, Mahroof S, Mahmoud EA, Elansary HO, Ulfat A, Abid H. Transgenerational Seed Exposure to Elevated CO 2 Involves Stress Memory Regulation at Metabolic Levels to Confer Drought Resistance in Wheat. ACS OMEGA 2024; 9:20042-20055. [PMID: 38737051 PMCID: PMC11079883 DOI: 10.1021/acsomega.3c10379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 04/06/2024] [Accepted: 04/08/2024] [Indexed: 05/14/2024]
Abstract
Drought is the worst environmental stress constraint that inflicts heavy losses to global food production, such as wheat. The metabolic responses of seeds produced overtransgenerational exposure to e[CO2] to recover drought's effects on wheat are still unexplored. Seeds were produced constantly for four generations (F1 to F4) under ambient CO2 (a[CO2], 400 μmol L-1) and elevated CO2 (e[CO2], 800 μmol L-1) concentrations, and then further regrown under natural CO2 conditions to investigate their effects on the stress memory metabolic processes liable for increasing drought resistance in the next generation (F5). At the anthesis stage, plants were subjected to normal (100% FC, field capacity) and drought stress (60% FC) conditions. Under drought stress, plants of transgenerational e[CO2] exposed seeds showed markedly increased superoxide dismutase (16%), catalase (24%), peroxidase (9%), total antioxidants (14%), and proline (35%) levels that helped the plants to sustain normal growth through scavenging of hydrogen peroxide (11%) and malondialdehyde (26%). The carbohydrate metabolic enzymes such as aldolase (36%), phosphoglucomutase (12%), UDP-glucose pyrophosphorylase (25%), vacuolar invertase (33%), glucose-6-phosphate-dehydrogenase (68%), and cell wall invertase (17%) were decreased significantly; however, transgenerational seeds produced under e[CO2] showed a considerable increase in their activities in drought-stressed wheat plants. Moreover, transgenerational e[CO2] exposed seeds under drought stress caused a marked increase in leaf Ψw (15%), chlorophyll a (19%), chlorophyll b (8%), carotenoids (12%), grain spike (16%), hundred grain weight (19%), and grain yield (10%). Hence, transgenerational seeds exposed to e[CO2] upregulate the drought recovery metabolic processes to improve the grain yield of wheat under drought stress conditions.
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Affiliation(s)
- Khawaja Shafique Ahmad
- Department
of Botany, University of Poonch Rawalakot, Rawalakot 12350, Azad Jammu and Kashmir, Pakistan
| | - Muhammad Asif Shehzad
- Institute
of Plant Breeding and Biotechnology, Muhammad
Nawaz Shareef University of Agriculture, Multan 66000, Pakistan
| | - Hina Javid
- Department
of Botany, University of Poonch Rawalakot, Rawalakot 12350, Azad Jammu and Kashmir, Pakistan
| | - Ansar Mehmood
- Department
of Botany, University of Poonch Rawalakot, Rawalakot 12350, Azad Jammu and Kashmir, Pakistan
| | - Gulzar Akhtar
- Department
of Horticulture, Muhammad Nawaz Shareef
University of Agriculture, Multan 66000, Pakistan
| | - Sadia Zafar
- Department
of Botany, Division of Science and Technology, University of Education, Lahore 54770, Punjab, Pakistan
| | - Sehrish Mahroof
- Institute
of Grassland Science, Northeast Normal University, Key Laboratory
of Vegetation Ecology, Ministry of Education, Jilin Songnen Grassland
Ecosystem National Observation and Research Station, Changchun 130024, P. R. China
| | - Eman A. Mahmoud
- Department
of Food Science, Faculty of Agriculture, Damietta University, Damietta 34517, Egypt
| | - Hosam O. Elansary
- Department
of Plant Production, College of Food & Agriculture Sciences, King Saud University, Riyadh 11451, Saudi Arabia
| | - Aneela Ulfat
- Department
of Botany, Mohi-Ud-Din Islamic University
Nerian Sharif, Azad Jammu
and Kashmir 12080, Pakistan
| | - Hajra Abid
- Department
of Botany, University of Poonch Rawalakot, Rawalakot 12350, Azad Jammu and Kashmir, Pakistan
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4
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Srivastava A, Srinivasan V, Long SP. Stomatal conductance reduction tradeoffs in maize leaves: A theoretical study. PLANT, CELL & ENVIRONMENT 2024; 47:1716-1731. [PMID: 38305579 DOI: 10.1111/pce.14821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 12/07/2023] [Accepted: 01/07/2024] [Indexed: 02/03/2024]
Abstract
As the leading global grain crop, maize significantly impacts agricultural water usage. Presently, photosynthesis (A net ${A}_{\text{net}}$ ) in leaves of modern maize crops is saturated withCO 2 ${\text{CO}}_{2}$ , implying that reducing stomatal conductance (g s ${g}_{{\rm{s}}}$ ) would not affectA net ${A}_{\text{net}}$ but reduce transpiration (τ $\tau $ ), thereby increasing water use efficiency (WUE). Whileg s ${g}_{{\rm{s}}}$ reduction benefits upper canopy leaves under optimal conditions, the tradeoffs in low light and nitrogen-deficient leaves under nonoptimal microenvironments remain unexplored. Moreover,g s ${g}_{{\rm{s}}}$ reduction increases leaf temperature (T leaf ${T}_{\text{leaf}}$ ) and water vapor pressure deficit, partially counteracting transpiratory water savings. Therefore, the overall impact ofg s ${g}_{{\rm{s}}}$ reduction on water savings remains unclear. Here, we use a process-based leaf model to investigate the benefits of reducedg s ${g}_{{\rm{s}}}$ in maize leaves under different microenvironments. Our findings show that increases inT leaf ${T}_{\text{leaf}}$ due tog s ${g}_{{\rm{s}}}$ reduction can diminish WUE gains by up to 20%. However,g s ${g}_{{\rm{s}}}$ reduction still results in beneficial WUE tradeoffs, where a 29% decrease ing s ${g}_{{\rm{s}}}$ in upper canopy leaves results in a 28% WUE gain without loss inA net ${A}_{\text{net}}$ . Lower canopy leaves exhibit superior tradeoffs ing s ${g}_{{\rm{s}}}$ reduction with 178% gains in WUE without loss inA net ${A}_{\text{net}}$ . Our simulations show that these WUE benefits are resilient to climate change.
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Affiliation(s)
- Antriksh Srivastava
- Department of Civil Engineering, Indian Institute of Technology Madras, Chennai, India
| | - Venkatraman Srinivasan
- Department of Civil Engineering, Indian Institute of Technology Madras, Chennai, India
- School of Sustainability, Indian Institute of Technology Madras, Chennai, India
| | - Stephen P Long
- The Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana Champaign, Champaign, Illinois, USA
- Department of Crop Sciences, University of Illinois Urbana Champaign, Champaign, Illinois, USA
- Department of Plant Biology, University of Illinois Urbana Champaign, Champaign, Illinois, USA
- Lancaster Environment Centre, Lancaster University, Lancaster, UK
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5
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Costa A, Bommarco R, Smith ME, Bowles T, Gaudin ACM, Watson CA, Alarcón R, Berti A, Blecharczyk A, Calderon FJ, Culman S, Deen W, Drury CF, Garcia Y Garcia A, García-Díaz A, Hernández Plaza E, Jonczyk K, Jäck O, Navarrete Martínez L, Montemurro F, Morari F, Onofri A, Osborne SL, Tenorio Pasamón JL, Sandström B, Santín-Montanyá I, Sawinska Z, Schmer MR, Stalenga J, Strock J, Tei F, Topp CFE, Ventrella D, Walker RL, Vico G. Crop rotational diversity can mitigate climate-induced grain yield losses. GLOBAL CHANGE BIOLOGY 2024; 30:e17298. [PMID: 38712640 DOI: 10.1111/gcb.17298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 03/28/2024] [Accepted: 03/31/2024] [Indexed: 05/08/2024]
Abstract
Diversified crop rotations have been suggested to reduce grain yield losses from the adverse climatic conditions increasingly common under climate change. Nevertheless, the potential for climate change adaptation of different crop rotational diversity (CRD) remains undetermined. We quantified how climatic conditions affect small grain and maize yields under different CRDs in 32 long-term (10-63 years) field experiments across Europe and North America. Species-diverse and functionally rich rotations more than compensated yield losses from anomalous warm conditions, long and warm dry spells, as well as from anomalous wet (for small grains) or dry (for maize) conditions. Adding a single functional group or crop species to monocultures counteracted yield losses from substantial changes in climatic conditions. The benefits of a further increase in CRD are comparable with those of improved climatic conditions. For instance, the maize yield benefits of adding three crop species to monocultures under detrimental climatic conditions exceeded the average yield of monocultures by up to 553 kg/ha under non-detrimental climatic conditions. Increased crop functional richness improved yields under high temperature, irrespective of precipitation. Conversely, yield benefits peaked at between two and four crop species in the rotation, depending on climatic conditions and crop, and declined at higher species diversity. Thus, crop species diversity could be adjusted to maximize yield benefits. Diversifying rotations with functionally distinct crops is an adaptation of cropping systems to global warming and changes in precipitation.
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Affiliation(s)
- Alessio Costa
- Department of Crop Production Ecology, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Riccardo Bommarco
- Department of Ecology, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Monique E Smith
- Department of Ecology, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Timothy Bowles
- Department of Environmental Science, Policy, and Management, University of California Berkeley, Berkeley, California, USA
| | - Amélie C M Gaudin
- Department of Plant Sciences, University of California Davis, Davis, California, USA
| | - Christine A Watson
- Department of Crop Production Ecology, Swedish University of Agricultural Sciences, Uppsala, Sweden
- Scotland's Rural College, Aberdeen, UK
| | - Remedios Alarcón
- Agro-environmental Department, Madrid Institute for Rural, Agricultural and Food Research and Development, Alcalá de Henares, Spain
| | - Antonio Berti
- Department of Agronomy, Food, Natural Resources, Animals and Environment, University of Padova, Padova, Italy
| | | | - Francisco J Calderon
- Columbia Basin Agricultural Research Center, Oregon State University, Adams, Oregon, USA
| | - Steve Culman
- School of Environment and Natural Resources, Ohio State University, Wooster, Ohio, USA
| | - William Deen
- Department of Plant Agriculture, University of Guelph, Guelph, Ontario, Canada
| | - Craig F Drury
- Harrow Research and Development Centre, Agriculture & Agri-Food Canada, Harrow, Ontario, Canada
| | - Axel Garcia Y Garcia
- Department of Agronomy and Plant Genetics at the Southwest Research and Outreach Center, University of Minnesota, Lamberton, Minnesota, USA
| | - Andrés García-Díaz
- Agricultural and Food Research and Development, Applied Research Department, Madrid Institute for Rural, Alcalá de Henares, Spain
| | - Eva Hernández Plaza
- Department of Plant Protection, National Institute for Agricultural and Food Research and Technology, Spanish National Research Council (INIA-CSIC), Madrid, Spain
| | - Krzysztof Jonczyk
- Department of Systems and Economics of Crop Production, Institute of Soil Science and Plant Cultivation - State Research Institute, Puławy, Poland
| | - Ortrud Jäck
- Department of Crop Production Ecology, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Luis Navarrete Martínez
- Agro-environmental Department, Madrid Institute for Rural, Agricultural and Food Research and Development, Alcalá de Henares, Spain
| | - Francesco Montemurro
- Research Centre for Agriculture and Environment (CREA-AA), Council for Agricultural Research and Agricultural Economy Analysis, Bari, Italy
| | - Francesco Morari
- Department of Agronomy, Food, Natural Resources, Animals and Environment, University of Padova, Padova, Italy
| | - Andrea Onofri
- Department of Agricultural, Food and Environmental Sciences, University of Perugia, Perugia, Italy
| | - Shannon L Osborne
- North Central Agricultural Research Laboratory, USDA-ARS, Brookings, South Dakota, USA
| | - José Luis Tenorio Pasamón
- Environment and Agronomy Department, National Institute for Agricultural and Food Research and Technology, Spanish National Research Council (INIA-CSIC), Madrid, Spain
| | - Boël Sandström
- Department of Crop Production Ecology, Swedish University of Agricultural Sciences, Umeå, Sweden
| | - Inés Santín-Montanyá
- Environment and Agronomy Department, National Institute for Agricultural and Food Research and Technology, Spanish National Research Council (INIA-CSIC), Madrid, Spain
| | - Zuzanna Sawinska
- Department of Agronomy, Poznań University of Life Sciences, Poznań, Poland
| | - Marty R Schmer
- Agroecosystem Management Research Unit, USDA-ARS, Lincoln, Nebraska, USA
| | - Jaroslaw Stalenga
- Department of Systems and Economics of Crop Production, Institute of Soil Science and Plant Cultivation - State Research Institute, Puławy, Poland
| | - Jeffrey Strock
- Department of Soil, Water, and Climate at the Southwest Research and Outreach Center, University of Minnesota, Lamberton, Minnesota, USA
| | - Francesco Tei
- Department of Agricultural, Food and Environmental Sciences, University of Perugia, Perugia, Italy
| | | | - Domenico Ventrella
- Research Centre for Agriculture and Environment (CREA-AA), Council for Agricultural Research and Agricultural Economy Analysis, Bari, Italy
| | | | - Giulia Vico
- Department of Crop Production Ecology, Swedish University of Agricultural Sciences, Uppsala, Sweden
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Ng CY, Wan Jaafar WZ, Othman F, Lai SH, Mei Y, Juneng L. Assessment of Evaporative Demand Drought Index for drought analysis in Peninsular Malaysia. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 917:170249. [PMID: 38278251 DOI: 10.1016/j.scitotenv.2024.170249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 11/26/2023] [Accepted: 01/15/2024] [Indexed: 01/28/2024]
Abstract
An effective drought monitoring tool is essential for the development of timely drought early warning system. This study evaluates Evaporative Demand Drought Index (EDDI) as a drought indicator in measuring spatiotemporal evolution of droughts over Peninsular Malaysia during 1989-2018. The modified Mann-Kendall and Sen's slope tests were performed to detect the presence of monotonic trends in EDDI, Standardized Precipitation Index (SPI), Standardized Precipitation Evapotranspiration Index (SPEI) and their related climate variables. The performance of EDDI in capturing the drought onset, evolutions and demise of historical severe droughts was also compared with SPI and SPEI at multiple timescales. EDDI demonstrates strong spatiotemporal correlations with SPI and SPEI and comparable performance in historical drought events identification. At sub-monthly timescale, 2-week EDDI displays equivalent drought severities and durations for all historical severe droughts corresponding to the monthly EDDI. In the case when rainfall deficits are normalized in an otherwise warm and dry month, EDDI may serve as a great alternative to SPI and SPEI due to it being sensitive to the changes in prevalent atmospheric conditions. Collectively, the results fill in the knowledge gaps on drought evolutions from the evaporative perspective and highlight the efficacy of EDDI as a valuable drought early warning tool for Peninsular Malaysia. Future study should explore the physical mechanisms behind the development of flash drought and the role of evaporation in the drought propagation processes.
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Affiliation(s)
- Cia Yik Ng
- Department of Civil Engineering, Faculty of Engineering, Universiti Malaya, Malaysia.
| | - Wan Zurina Wan Jaafar
- Department of Civil Engineering, Faculty of Engineering, Universiti Malaya, Malaysia.
| | - Faridah Othman
- Department of Civil Engineering, Faculty of Engineering, Universiti Malaya, Malaysia.
| | - Sai Hin Lai
- Department of Civil Engineering, Faculty of Engineering, Universiti Malaysia Sarawak, Malaysia.
| | - Yiwen Mei
- Carbon-Water Research Station in Karst Regions of Northern Guangdong, School of Geography and Planning, Sun Yat-sen University, China.
| | - Liew Juneng
- Center for Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Malaysia.
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7
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Williams E, Funk C, Peterson P, Tuholske C. High resolution climate change observations and projections for the evaluation of heat-related extremes. Sci Data 2024; 11:261. [PMID: 38429277 DOI: 10.1038/s41597-024-03074-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 02/14/2024] [Indexed: 03/03/2024] Open
Abstract
The Climate Hazards Center Coupled Model Intercomparison Project Phase 6 climate projection dataset (CHC-CMIP6) was developed to support the analysis of climate-related hazards, including extreme humid heat and drought conditions, over the recent past and in the near-future. Global daily high resolution (0.05°) grids of the Climate Hazards InfraRed Temperature with Stations temperature product, the Climate Hazards InfraRed Precipitation with Stations precipitation product, and ERA5-derived relative humidity form the basis of the 1983-2016 historical record, from which daily Vapor Pressure Deficits (VPD) and maximum Wet Bulb Globe Temperatures (WBGTmax) were derived. Large CMIP6 ensembles from the Shared Socioeconomic Pathway 2-4.5 and SSP 5-8.5 scenarios were then used to develop high resolution daily 2030 and 2050 'delta' fields. These deltas were used to perturb the historical observations, thereby generating 0.05° 2030 and 2050 projections of daily precipitation, temperature, relative humidity, and derived VPD and WBGTmax. Finally, monthly counts of frequency of extremes for each variable were derived for each time period.
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Affiliation(s)
- Emily Williams
- Climate Hazards Center, University of California, Santa Barbara, CA, 93106, USA.
- Sierra Nevada Research Institute, University of California, Merced, CA, 95343, USA.
| | - Chris Funk
- Climate Hazards Center, University of California, Santa Barbara, CA, 93106, USA.
| | - Pete Peterson
- Climate Hazards Center, University of California, Santa Barbara, CA, 93106, USA
| | - Cascade Tuholske
- Department of Earth Sciences, Montana State University, Bozeman, MT, 59717, USA
- Geospatial Core Facility, Montana State University, Bozeman, MT, 59717, USA
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8
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Zhang P, Lenka NK, Song Y. Editorial: Sustaining CO 2 fertilization gains under water and nutrient stress in crop plants. FRONTIERS IN PLANT SCIENCE 2024; 15:1375175. [PMID: 38455732 PMCID: PMC10918341 DOI: 10.3389/fpls.2024.1375175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 02/06/2024] [Indexed: 03/09/2024]
Affiliation(s)
- Pengpeng Zhang
- School of Agronomy, Anhui Agricultural University, Hefei, Anhui, China
| | - Narendra Kumar Lenka
- Division of Soil Physics, Indian Council of Agricultural Research (ICAR)-Indian Institute of Soil Science, Bhopal, Madhya Pradesh, India
| | - Youhong Song
- School of Agronomy, Anhui Agricultural University, Hefei, Anhui, China
- Centre for Crop Science, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Brisbane, QLD, Australia
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9
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Ren Z, Fu J, Abou-Elwafa SF, Ku L, Xie X, Liu Z, Shao J, Wen P, Al Aboud NM, Su H, Wang T, Wei L. Analysis of the molecular mechanisms regulating how ZmEREB24 improves drought tolerance in maize (Zea mays) seedlings. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 207:108292. [PMID: 38215602 DOI: 10.1016/j.plaphy.2023.108292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 11/30/2023] [Accepted: 12/18/2023] [Indexed: 01/14/2024]
Abstract
Drought stress is one of the most limiting factors of maize productivity and can lead to a sharp reduction in the total biomass when it occurs at the seedling stage. Improving drought tolerance at the seedling stage is of great importance for maize breeding. The AP2/ERF transcription factor family plays a critical role in plant response to abiotic stresses. Here, we used a preliminary previously-generated ranscriptomic dataset to identify a highly drought-stress-responsive AP2 gene, i.e., ZmEREB24. Compared to the wild type, the overexpression of ZmEREB24 in maize significantly promotes drought tolerance of transgenic plants at the seedling stage. CRISPR/Cas9-based ZmEREB24-knockout mutants showed a drought-sensitive phenotype. RNA-seq analysis and EMSA assay revealed AATGG.CT and GTG.T.GCC motifs as the main binding sites of ZmEREB24 to the promoters of downstream target genes. DAP-seq identified four novel target genes involved in proline and sugar metabolism and hormone signal transduction of ZmEREB24. Our data indicate that ZmEREB24 plays important biological functions in regulating drought tolerance by binding to the promoters of drought stress genes and modulating their expression. The results further suggest a role of ZmEREB24 in regulating drought adaptation in maize, indicating its potential importance for employing molecular breeding in the development of high-yield drought-tolerant maize cultivars.
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Affiliation(s)
- Zhenzhen Ren
- College of Agronomy, Henan Agricultural University, Zhengzhou, 450046, China
| | - Jiaxu Fu
- Henna Technology Innovation Centre of Wheat, Henan Agricultural University, Zhengzhou, 450046, China
| | | | - Lixia Ku
- College of Agronomy, Henan Agricultural University, Zhengzhou, 450046, China
| | - Xiaowen Xie
- Henna Technology Innovation Centre of Wheat, Henan Agricultural University, Zhengzhou, 450046, China
| | - Zhixue Liu
- College of Agronomy, Henan Agricultural University, Zhengzhou, 450046, China
| | - Jing Shao
- Henna Technology Innovation Centre of Wheat, Henan Agricultural University, Zhengzhou, 450046, China
| | - Pengfei Wen
- College of Agronomy, Henan Agricultural University, Zhengzhou, 450046, China
| | - Nora M Al Aboud
- Department of Biology, Faculty of Applied Sciences, Umm Al-Qura University, Makkah, 21955, Saudi Arabia
| | - Huihui Su
- College of Agronomy, Henan Agricultural University, Zhengzhou, 450046, China.
| | - Tongchao Wang
- College of Agronomy, Henan Agricultural University, Zhengzhou, 450046, China.
| | - Li Wei
- Henna Technology Innovation Centre of Wheat, Henan Agricultural University, Zhengzhou, 450046, China.
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10
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Puli MR, Muchoki P, Yaaran A, Gershon N, Dalal A, Nalufunjo F, Dagan Y, Rosental L, Abadi S, Haber Z, Silva L, Brotman Y, Sade N, Yalovsky S. Null mutants of a tomato Rho of plants exhibit enhanced water use efficiency without a penalty to yield. Proc Natl Acad Sci U S A 2024; 121:e2309006120. [PMID: 38190516 PMCID: PMC10823239 DOI: 10.1073/pnas.2309006120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 10/23/2023] [Indexed: 01/10/2024] Open
Abstract
Improving water use efficiency in crops is a significant challenge as it involves balancing water transpiration and CO2 uptake through stomatal pores. This study investigates the role of SlROP9, a tomato Rho of Plants protein, in guard cells and its impact on plant transpiration. The results reveal that SlROP9 null mutants exhibit reduced stomatal conductance while photosynthetic CO2 assimilation remains largely unaffected. Notably, there is a notable decrease in whole-plant transpiration in the rop9 mutants compared to the wild type, especially during noon hours when the water pressure deficit is high. The elevated stomatal closure observed in rop9 mutants is linked to an increase in reactive oxygen species formation. This is very likely dependent on the respiratory burst oxidase homolog (RBOH) NADPH oxidase and is not influenced by abscisic acid (ABA). Consistently, activated ROP9 can interact with RBOHB in both yeast and plants. In diverse tomato accessions, drought stress represses ROP9 expression, and in Arabidopsis stomatal guard cells, ABA suppresses ROP signaling. Therefore, the phenotype of the rop9 mutants may arise from a disruption in ROP9-regulated RBOH activity. Remarkably, large-scale field experiments demonstrate that the rop9 mutants display improved water use efficiency without compromising fruit yield. These findings provide insights into the role of ROPs in guard cells and their potential as targets for enhancing water use efficiency in crops.
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Affiliation(s)
- Mallikarjuna R. Puli
- School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv6997801, Israel
| | - Purity Muchoki
- School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv6997801, Israel
| | - Adi Yaaran
- School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv6997801, Israel
| | - Noga Gershon
- School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv6997801, Israel
| | - Ahan Dalal
- School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv6997801, Israel
| | - Felista Nalufunjo
- School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv6997801, Israel
| | - Yoav Dagan
- School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv6997801, Israel
| | - Leah Rosental
- Department of Life Sciences, Ben-Gurion University of the Negev, Beer-Sheva8410501, Israel
| | - Shiran Abadi
- School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv6997801, Israel
| | - Zachary Haber
- School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv6997801, Israel
| | - Lucas Silva
- Environmental Studies and Biology, University of Oregon, Eugene, OR97403
| | - Yariv Brotman
- Department of Life Sciences, Ben-Gurion University of the Negev, Beer-Sheva8410501, Israel
| | - Nir Sade
- School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv6997801, Israel
| | - Shaul Yalovsky
- School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv6997801, Israel
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11
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Barreto CAV, das Graças Dias KO, de Sousa IC, Azevedo CF, Nascimento ACC, Guimarães LJM, Guimarães CT, Pastina MM, Nascimento M. Genomic prediction in multi-environment trials in maize using statistical and machine learning methods. Sci Rep 2024; 14:1062. [PMID: 38212638 PMCID: PMC10784464 DOI: 10.1038/s41598-024-51792-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 01/09/2024] [Indexed: 01/13/2024] Open
Abstract
In the context of multi-environment trials (MET), genomic prediction is proposed as a tool that allows the prediction of the phenotype of single cross hybrids that were not tested in field trials. This approach saves time and costs compared to traditional breeding methods. Thus, this study aimed to evaluate the genomic prediction of single cross maize hybrids not tested in MET, grain yield and female flowering time. We also aimed to propose an application of machine learning methodologies in MET in the prediction of hybrids and compare their performance with Genomic best linear unbiased prediction (GBLUP) with non-additive effects. Our results highlight that both methodologies are efficient and can be used in maize breeding programs to accurately predict the performance of hybrids in specific environments. The best methodology is case-dependent, specifically, to explore the potential of GBLUP, it is important to perform accurate modeling of the variance components to optimize the prediction of new hybrids. On the other hand, machine learning methodologies can capture non-additive effects without making any assumptions at the outset of the model. Overall, predicting the performance of new hybrids that were not evaluated in any field trials was more challenging than predicting hybrids in sparse test designs.
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Affiliation(s)
| | | | - Ithalo Coelho de Sousa
- Department of Mathematics and Statistics, Universidade Federal de Rondônia, Ji-Paraná, RO, Brazil
| | | | | | | | | | | | - Moysés Nascimento
- Department of Statistics, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil.
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12
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Li Y, Su Z, Lin Y, Xu Z, Bao H, Wang F, Liu J, Hu S, Wang Z, Yu X, Gao J. Utilizing transcriptomics and metabolomics to unravel key genes and metabolites of maize seedlings in response to drought stress. BMC PLANT BIOLOGY 2024; 24:34. [PMID: 38185653 PMCID: PMC10773024 DOI: 10.1186/s12870-023-04712-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 12/27/2023] [Indexed: 01/09/2024]
Abstract
BACKGROUND Drought stress can substantially restrict maize growth and productivity, and global warming and an increasing frequency of extreme weather events are likely to result in more yield losses in the future. Therefore, unraveling the molecular mechanism underlying the response to drought stress is essential for breeding drought-resilient crops. RESULTS In this study, we subjected the 3-leaf-period plants of two maize inbred lines, a drought-tolerant line (si287) and a drought-sensitive line (X178), to drought stress for seven days while growing in a chamber. Subsequently, we measured physiological traits and analyzed transcriptomic and metabolic profiles of two inbred lines. Our KEGG analysis of genes and metabolites revealed significant differences in pathways related to glycolysis/gluconeogenesis, flavonoid biosynthesis, starch and sucrose metabolism, and biosynthesis of amino acids. Additionally, our joint analysis identified proline, tryptophan and phenylalanine are crucial amino acids for maize response to drought stress. Furthermore, we concentrated on tryptophan (Trp), which was found to enhance tolerance via IAA-ABA signaling, as well as SA and nicotinamide adenine dinucleotide (NAD) consequent reactive oxygen species (ROS) scavenging. We identified three hub genes in tryptophan biosynthesis, indole-3-acetaldehyde oxidase (ZmAO1, 542,228), catalase 1 (ZmCAT1, 542,369), and flavin-containing monooxygenase 6 (ZmYUC6, 103,629,142), High expression of these genes plays a significant role in regulating drought tolerance. Two metabolites related to tryptophan biosynthesis, quinolinic acid, and kynurenine improved maize tolerance to drought stress by scavenging reactive oxygen species. CONCLUSIONS This study illuminates the mechanisms underlying the response of maize seedlings to drought stress. Especially, it identifies novel candidate genes and metabolites, enriching our understanding of the role of tryptophan in drought stress. The identification of distinct resistance mechanisms in maize inbred lines will facilitate the exploration of maize germplasm and the breeding of drought-resilient hybrids.
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Affiliation(s)
- Yipu Li
- Region Research Center for Conservation and Utilization of Crop Germplasm Resources in Cold and Arid Areas, Agricultural College, Inner Mongolia Agricultural University, Hohhot, China.
| | - Zhijun Su
- Region Research Center for Conservation and Utilization of Crop Germplasm Resources in Cold and Arid Areas, Agricultural College, Inner Mongolia Agricultural University, Hohhot, China
| | - Yanan Lin
- Region Research Center for Conservation and Utilization of Crop Germplasm Resources in Cold and Arid Areas, Agricultural College, Inner Mongolia Agricultural University, Hohhot, China
| | - Zhenghan Xu
- Region Research Center for Conservation and Utilization of Crop Germplasm Resources in Cold and Arid Areas, Agricultural College, Inner Mongolia Agricultural University, Hohhot, China
| | - Haizhu Bao
- Region Research Center for Conservation and Utilization of Crop Germplasm Resources in Cold and Arid Areas, Agricultural College, Inner Mongolia Agricultural University, Hohhot, China
| | - Fugui Wang
- Vocational and Technical College, Inner Mongolia Agricultural University, Baotou, China
| | - Jian Liu
- Vocational and Technical College, Inner Mongolia Agricultural University, Baotou, China
| | - Shuping Hu
- Vocational and Technical College, Inner Mongolia Agricultural University, Baotou, China
| | - Zhigang Wang
- Region Research Center for Conservation and Utilization of Crop Germplasm Resources in Cold and Arid Areas, Agricultural College, Inner Mongolia Agricultural University, Hohhot, China
| | - Xiaofang Yu
- Region Research Center for Conservation and Utilization of Crop Germplasm Resources in Cold and Arid Areas, Agricultural College, Inner Mongolia Agricultural University, Hohhot, China.
| | - Julin Gao
- Region Research Center for Conservation and Utilization of Crop Germplasm Resources in Cold and Arid Areas, Agricultural College, Inner Mongolia Agricultural University, Hohhot, China.
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13
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Moyankova D, Stoykova P, Veleva P, Christov NK, Petrova A, Atanassova S. An Aquaphotomics Approach for Investigation of Water-Stress-Induced Changes in Maize Plants. SENSORS (BASEL, SWITZERLAND) 2023; 23:9678. [PMID: 38139522 PMCID: PMC10747378 DOI: 10.3390/s23249678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 11/24/2023] [Accepted: 12/04/2023] [Indexed: 12/24/2023]
Abstract
The productivity of plants is considerably affected by various environmental stresses. Exploring the specific pattern of the near-infrared spectral data acquired non-destructively from plants subjected to stress can contribute to a better understanding of biophysical and biochemical processes in plants. Experiments for investigating NIR spectra of maize plants subjected to water stress were conducted. Two maize lines were used: US corn-belt inbred line B37 and mutant inbred XM 87-136, characterized by very high drought tolerance. After reaching the 4-leaf stage, 10 plants from each line were subjected to water stress, and 10 plants were used as control, kept under a regular water regime. The drought lasted until day 17 and then the plants were recovered by watering for 4 days. A MicroNIR OnSite-W Spectrometer (VIAVI Solutions Inc., Chandler, AZ, USA) was used for in vivo measurement of each maize leaf spectra. PLS models for determining drought days were created and aquagrams were calculated separately for the plants' second, third, and fourth leaves. Differences in absorption spectra were observed between control, stressed, and recovered maize plants, as well as between different measurement days of stressed plants. Aquagrams were used to visualize the water spectral pattern in maize leaves and how it changes along the drought process.
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Affiliation(s)
- Daniela Moyankova
- AgroBioInstitute, Agricultural Academy, 1164 Sofia, Bulgaria; (D.M.); (P.S.); (N.K.C.)
| | - Petya Stoykova
- AgroBioInstitute, Agricultural Academy, 1164 Sofia, Bulgaria; (D.M.); (P.S.); (N.K.C.)
| | - Petya Veleva
- Faculty of Agriculture, Trakia University, 6000 Stara Zagora, Bulgaria; (P.V.); (A.P.)
| | - Nikolai K. Christov
- AgroBioInstitute, Agricultural Academy, 1164 Sofia, Bulgaria; (D.M.); (P.S.); (N.K.C.)
| | - Antoniya Petrova
- Faculty of Agriculture, Trakia University, 6000 Stara Zagora, Bulgaria; (P.V.); (A.P.)
| | - Stefka Atanassova
- Faculty of Agriculture, Trakia University, 6000 Stara Zagora, Bulgaria; (P.V.); (A.P.)
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14
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Chen S, Liu H, Yangzong Z, Gardea-Torresdey JL, White JC, Zhao L. Seed Priming with Reactive Oxygen Species-Generating Nanoparticles Enhanced Maize Tolerance to Multiple Abiotic Stresses. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:19932-19941. [PMID: 37975618 DOI: 10.1021/acs.est.3c07339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Climate change-induced extreme weather events (heat, cold, drought, and flooding) will severely affect crop production. Increasing the resilience of crops to fluctuating environmental conditions is critically important. Here, we report that nanomaterials (NMs) with reactive oxygen species (ROS)-generating properties can be used as seed priming agents to simultaneously enhance the tolerance of maize seeds and seedlings to diverse and even multiple stresses. Maize seeds primed with 40 mg/L silver nanoparticles (AgNPs) exhibited accelerated seed germination and an increased germination rate, greater seedling vigor, and better seedling growth under drought (10% and 20% PEG), saline (50 and 100 mM NaCl), and cold (15 °C) stress conditions, indicating enhanced resilience to diverse stresses. Importantly, maize resistance to simultaneous multiple stresses (drought and cold, drought and salt, and salt and cold) was markedly enhanced. Under drought conditions, seed priming significantly boosted root hair density and length (17.3-82.7%), which enabled greater tolerance to water deficiency. RNA-seq analysis reveals that AgNPs seed priming induced a transcriptomic shift in maize seeds. Plant hormone signal transduction and MAPK signaling pathways were activated upon seed priming. Importantly, low-cost and environmentally friendly ROS-generating Fe-based NMs (Fe2O3 and Fe3O4 NPs) were also demonstrated to enhance the resistance of seeds and seedlings to drought, salt, and cold stresses. These findings demonstrate that a simple seed priming strategy can be used to significantly enhance the climate resilience of crops through modulated ROS homeostasis and that this approach could be a powerful nanoenabled tool for addressing worsening food insecurity.
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Affiliation(s)
- Si Chen
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Haolin Liu
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Zhaxi Yangzong
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Jorge L Gardea-Torresdey
- Chemistry and Biochemistry Department, The University of Texas at El Paso, 500 West University Avenue, El Paso, Texas 79968, United States
| | - Jason C White
- The Connecticut Agricultural Experiment Station (CAES), New Haven, Connecticut 06511, United States
| | - Lijuan Zhao
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
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15
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Zhang K, Xue M, Qin F, He Y, Zhou Y. Natural polymorphisms in ZmIRX15A affect water-use efficiency by modulating stomatal density in maize. PLANT BIOTECHNOLOGY JOURNAL 2023; 21:2560-2573. [PMID: 37572352 PMCID: PMC10651153 DOI: 10.1111/pbi.14153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 05/11/2023] [Accepted: 07/31/2023] [Indexed: 08/14/2023]
Abstract
Stomatal density (SD) is closely related to crop drought resistance. Understanding the genetic basis for natural variation in SD may facilitate efforts to improve water-use efficiency. Here, we report a genome-wide association study for SD in maize seedlings, which identified 18 genetic variants that could be resolved to seven candidate genes. A 3-bp insertion variant (InDel1089) in the last exon of Zea mays (Zm) IRX15A (Irregular xylem 15A) had the most significant association with SD and modulated the translation of ZmIRX15A mRNA by affecting its secondary structure. Dysfunction of ZmIRX15A increased SD, leading to an increase in the transpiration rate and CO2 assimilation efficiency. ZmIRX15A encodes a xylan deposition enzyme and its disruption significantly decreased xylan abundance in secondary cell wall composition. Transcriptome analysis revealed a substantial alteration of the expression of genes involved in stomatal complex morphogenesis and drought response in the loss-of-function of ZmIRX15A mutant. Overall, our study provides important genetic insights into the natural variation of leaf SD in maize, and the identified loci or genes can serve as direct targets for enhancing drought resistance in molecular-assisted maize breeding.
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Affiliation(s)
- Kun Zhang
- State Key Laboratory of Plant Physiology and BiochemistryEngineering Research Center of Plant Growth RegulatorCollege of Agronomy and BiotechnologyChina Agricultural UniversityBeijingChina
| | - Ming Xue
- Jiangsu Key Laboratory of Crop Genetics and PhysiologyCo‐Innovation Center for Modern Production Technology of Grain CropsKey Laboratory of Plant Functional Genomics of the Ministry of EducationYangzhou UniversityYangzhouChina
| | - Feng Qin
- State Key Laboratory of Plant Physiology and BiochemistryCollege of Biological SciencesChina Agricultural UniversityBeijingChina
| | - Yan He
- National Maize Improvement Center of ChinaCollege of Agronomy and BiotechnologyChina Agricultural UniversityBeijingChina
| | - Yuyi Zhou
- State Key Laboratory of Plant Physiology and BiochemistryEngineering Research Center of Plant Growth RegulatorCollege of Agronomy and BiotechnologyChina Agricultural UniversityBeijingChina
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16
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Liang J, Krauss KW, Finnigan J, Stuart-Williams H, Farquhar GD, Ball MC. Linking water use efficiency with water use strategy from leaves to communities. THE NEW PHYTOLOGIST 2023; 240:1735-1742. [PMID: 37823336 DOI: 10.1111/nph.19308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 09/04/2023] [Indexed: 10/13/2023]
Abstract
Limitations and utility of three measures of water use characteristics were evaluated: water use efficiency (WUE), intrinsic WUE and marginal water cost of carbon gain ( ∂ E / ∂ A ) estimated, respectively, as ratios of assimilation (A) to transpiration (E), of A to stomatal conductance (gs ) and of sensitivities of E and A with variation in gs . Only the measure ∂ E / ∂ A estimates water use strategy in a way that integrates carbon gain relative to water use under varying environmental conditions across scales from leaves to communities. This insight provides updated and simplified ways of estimating ∂ E / ∂ A and adds depth to understanding ways that plants balance water expenditure against carbon gain, uniquely providing a mechanistic means of predicting water use characteristics under changing environmental scenarios.
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Affiliation(s)
- Jie Liang
- Plant Science Division, Research School of Biology, Australian National University, Acton, ACT, 2601, Australia
| | - Ken W Krauss
- Wetland and Aquatic Research Center, US Geological Survey, 70506, LA, Lafayette, USA
| | - John Finnigan
- Plant Science Division, Research School of Biology, Australian National University, Acton, ACT, 2601, Australia
| | - Hilary Stuart-Williams
- Plant Science Division, Research School of Biology, Australian National University, Acton, ACT, 2601, Australia
| | - Graham D Farquhar
- Plant Science Division, Research School of Biology, Australian National University, Acton, ACT, 2601, Australia
| | - Marilyn C Ball
- Plant Science Division, Research School of Biology, Australian National University, Acton, ACT, 2601, Australia
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17
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Kantola IB, Blanc-Betes E, Masters MD, Chang E, Marklein A, Moore CE, von Haden A, Bernacchi CJ, Wolf A, Epihov DZ, Beerling DJ, DeLucia EH. Improved net carbon budgets in the US Midwest through direct measured impacts of enhanced weathering. GLOBAL CHANGE BIOLOGY 2023; 29:7012-7028. [PMID: 37589204 DOI: 10.1111/gcb.16903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 06/23/2023] [Indexed: 08/18/2023]
Abstract
Terrestrial enhanced weathering (EW) through the application of Mg- or Ca-rich rock dust to soil is a negative emission technology with the potential to address impacts of climate change. The effectiveness of EW was tested over 4 years by spreading ground basalt (50 t ha-1 year-1 ) on maize/soybean and miscanthus cropping systems in the Midwest US. The major elements of the carbon budget were quantified through measurements of eddy covariance, soil carbon flux, and biomass. The movement of Mg and Ca to deep soil, released by weathering, balanced by a corresponding alkalinity flux, was used to measure the drawdown of CO2 , where the release of cations from basalt was measured as the ratio of rare earth elements to base cations in the applied rock dust and in the surface soil. Basalt application stimulated peak biomass and net primary production in both cropping systems and caused a small but significant stimulation of soil respiration. Net ecosystem carbon balance (NECB) was strongly negative for maize/soybean (-199 to -453 g C m-2 year-1 ) indicating this system was losing carbon to the atmosphere. Average EW (102 g C m-2 year-1 ) offset carbon loss in the maize/soybean by 23%-42%. NECB of miscanthus was positive (63-129 g C m-2 year-1 ), indicating carbon gain in the system, and EW greatly increased inorganic carbon storage by an additional 234 g C m-2 year-1 . Our analysis indicates a co-deployment of a perennial biofuel crop (miscanthus) with EW leads to major wins-increased harvested yields of 29%-42% with additional carbon dioxide removal (CDR) of 8.6 t CO2 ha-1 year-1 . EW applied to maize/soybean drives a CDR of 3.7 t CO2 ha-1 year-1 , which partially offsets well-established carbon losses from soil from this crop rotation. EW applied in the US Midwest creates measurable improvements to the carbon budgets perennial bioenergy crops and conventional row crops.
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Affiliation(s)
- Ilsa B Kantola
- Institute for Sustainability, Energy, and Environment, Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Elena Blanc-Betes
- Center for Applied Bioenergy and Bioproducts Innovation, Institute for Sustainability, Energy, and Environment, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Michael D Masters
- Institute for Sustainability, Energy, and Environment, Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | | | | | - Caitlin E Moore
- School of Agriculture and Environment, The University of Western Australia, Crawley, Western Australia, Australia
| | - Adam von Haden
- Department of Agronomy, University of Wisconsin, Madison, Wisconsin, USA
| | - Carl J Bernacchi
- Global Change Photosynthesis Research Unit, USDA/ARS, Urbana, Illinois, USA
- Department of Plant Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Adam Wolf
- Eion Corp., Princeton, New Jersey, USA
| | - Dimitar Z Epihov
- Department of Animal and Plant Sciences, Leverhulme Centre for Climate Change Mitigation, University of Sheffield, Sheffield, UK
| | - David J Beerling
- Department of Animal and Plant Sciences, Leverhulme Centre for Climate Change Mitigation, University of Sheffield, Sheffield, UK
| | - Evan H DeLucia
- Institute for Sustainability, Energy, and Environment, Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Center for Applied Bioenergy and Bioproducts Innovation, Institute for Sustainability, Energy, and Environment, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Department of Plant Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
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18
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Tao K, Li Y, Hu Y, Li Y, Zhang D, Li C, He G, Song Y, Shi Y, Li Y, Wang T, Lu Y, Liu X. Overexpression of ZmEXPA5 reduces anthesis-silking interval and increases grain yield under drought and well-watered conditions in maize. MOLECULAR BREEDING : NEW STRATEGIES IN PLANT IMPROVEMENT 2023; 43:84. [PMID: 38009100 PMCID: PMC10667192 DOI: 10.1007/s11032-023-01432-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 11/10/2023] [Indexed: 11/28/2023]
Abstract
Drought is one of the major abiotic stresses affecting the maize production worldwide. As a cross-pollination crop, maize is sensitive to water stress at flowering stage. Drought at this stage leads to asynchronous development of male and female flower organ and increased interval between anthesis and silking, which finally causes failure of pollination and grain yield loss. In the present study, the expansin gene ZmEXPA5 was cloned and its function in drought tolerance was characterized. An indel variant in promoter of ZmEXPA5 is significantly associated with natural variation in drought-induced anthesis-silking interval. The drought susceptible haplotypes showed lower expression level of ZmEXPA5 than tolerant haplotypes and lost the cis-regulatory activity of ZmDOF29. Increasing ZmEXPA5 expression in transgenic maize decreases anthesis-silking interval and improves grain yield under both drought and well-watered environments. In addition, the expression pattern of ZmEXPA5 was analyzed. These findings provide insights into the genetic basis of drought tolerance and a promising gene for drought improvement in maize breeding. Supplementary Information The online version contains supplementary material available at 10.1007/s11032-023-01432-x.
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Affiliation(s)
- Keyu Tao
- College of Advanced Agriculture and Ecological Environment, Heilongjiang University, Harbin, 150080 China
- State Key Lab of Crop Gene Resource and Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081 China
| | - Yan Li
- State Key Lab of Crop Gene Resource and Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081 China
- College of Agriculture, Yangtze University, Jingzhou, 434000 China
| | - Yue Hu
- State Key Lab of Crop Gene Resource and Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081 China
| | - Yongxiang Li
- State Key Lab of Crop Gene Resource and Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081 China
| | - Dengfeng Zhang
- State Key Lab of Crop Gene Resource and Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081 China
| | - Chunhui Li
- State Key Lab of Crop Gene Resource and Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081 China
| | - Guanhua He
- State Key Lab of Crop Gene Resource and Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081 China
| | - Yanchun Song
- State Key Lab of Crop Gene Resource and Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081 China
| | - Yunsu Shi
- State Key Lab of Crop Gene Resource and Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081 China
| | - Yu Li
- State Key Lab of Crop Gene Resource and Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081 China
| | - Tianyu Wang
- State Key Lab of Crop Gene Resource and Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081 China
| | - Yuncai Lu
- College of Advanced Agriculture and Ecological Environment, Heilongjiang University, Harbin, 150080 China
| | - Xuyang Liu
- State Key Lab of Crop Gene Resource and Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081 China
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19
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Baker CR, Patel‐Tupper D, Cole BJ, Ching LG, Dautermann O, Kelikian AC, Allison C, Pedraza J, Sievert J, Bilbao A, Lee J, Kim Y, Kyle JE, Bloodsworth KJ, Paurus V, Hixson KK, Hutmacher R, Dahlberg J, Lemaux PG, Niyogi KK. Metabolomic, photoprotective, and photosynthetic acclimatory responses to post-flowering drought in sorghum. PLANT DIRECT 2023; 7:e545. [PMID: 37965197 PMCID: PMC10641490 DOI: 10.1002/pld3.545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 10/08/2023] [Accepted: 10/12/2023] [Indexed: 11/16/2023]
Abstract
Climate change is globally affecting rainfall patterns, necessitating the improvement of drought tolerance in crops. Sorghum bicolor is a relatively drought-tolerant cereal. Functional stay-green sorghum genotypes can maintain green leaf area and efficient grain filling during terminal post-flowering water deprivation, a period of ~10 weeks. To obtain molecular insights into these characteristics, two drought-tolerant genotypes, BTx642 and RTx430, were grown in replicated control and terminal post-flowering drought field plots in California's Central Valley. Photosynthetic, photoprotective, and water dynamics traits were quantified and correlated with metabolomic data collected from leaves, stems, and roots at multiple timepoints during control and drought conditions. Physiological and metabolomic data were then compared to longitudinal RNA sequencing data collected from these two genotypes. The unique metabolic and transcriptomic response to post-flowering drought in sorghum supports a role for the metabolite galactinol in controlling photosynthetic activity through regulating stomatal closure in post-flowering drought. Additionally, in the functional stay-green genotype BTx642, photoprotective responses were specifically induced in post-flowering drought, supporting a role for photoprotection in the molecular response associated with the functional stay-green trait. From these insights, new pathways are identified that can be targeted to maximize yields under growth conditions with limited water.
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Affiliation(s)
- Christopher R. Baker
- Howard Hughes Medical Institute, Department of Plant and Microbial BiologyUniversity of CaliforniaBerkeleyCaliforniaUSA
| | - Dhruv Patel‐Tupper
- Department of Plant and Microbial BiologyUniversity of CaliforniaBerkeleyCaliforniaUSA
| | - Benjamin J. Cole
- DOE‐Joint Genome InstituteLawrence Berkeley National LaboratoryBerkeleyCaliforniaUSA
| | - Lindsey G. Ching
- Department of Plant and Microbial BiologyUniversity of CaliforniaBerkeleyCaliforniaUSA
| | - Oliver Dautermann
- Department of Plant and Microbial BiologyUniversity of CaliforniaBerkeleyCaliforniaUSA
| | - Armen C. Kelikian
- Department of Plant and Microbial BiologyUniversity of CaliforniaBerkeleyCaliforniaUSA
| | - Cayci Allison
- UC‐ANR Kearney Agricultural Research and Extension (KARE) CenterParlierCaliforniaUSA
| | - Julie Pedraza
- UC‐ANR Kearney Agricultural Research and Extension (KARE) CenterParlierCaliforniaUSA
| | - Julie Sievert
- UC‐ANR Kearney Agricultural Research and Extension (KARE) CenterParlierCaliforniaUSA
| | - Aivett Bilbao
- Environmental Molecular Sciences Laboratory, Pacific Northwest National LaboratoryRichlandWashingtonUSA
| | - Joon‐Yong Lee
- Biological Sciences Division, Pacific Northwest National LaboratoryRichlandWashingtonUSA
| | - Young‐Mo Kim
- Biological Sciences Division, Pacific Northwest National LaboratoryRichlandWashingtonUSA
| | - Jennifer E. Kyle
- Biological Sciences Division, Pacific Northwest National LaboratoryRichlandWashingtonUSA
| | - Kent J. Bloodsworth
- Biological Sciences Division, Pacific Northwest National LaboratoryRichlandWashingtonUSA
| | - Vanessa Paurus
- Biological Sciences Division, Pacific Northwest National LaboratoryRichlandWashingtonUSA
| | - Kim K. Hixson
- Environmental Molecular Sciences Laboratory, Pacific Northwest National LaboratoryRichlandWashingtonUSA
| | - Robert Hutmacher
- Department of Plant SciencesUniversity of CaliforniaDavisCaliforniaUSA
| | - Jeffery Dahlberg
- UC‐ANR Kearney Agricultural Research and Extension (KARE) CenterParlierCaliforniaUSA
| | - Peggy G. Lemaux
- Department of Plant and Microbial BiologyUniversity of CaliforniaBerkeleyCaliforniaUSA
| | - Krishna K. Niyogi
- Howard Hughes Medical Institute, Department of Plant and Microbial BiologyUniversity of CaliforniaBerkeleyCaliforniaUSA
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National LaboratoryBerkeleyCaliforniaUSA
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20
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Djabali Y, Rincent R, Martin ML, Blein-Nicolas M. Plasticity QTLs specifically contribute to the genotype × water availability interaction in maize. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2023; 136:228. [PMID: 37855950 DOI: 10.1007/s00122-023-04458-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 08/31/2023] [Indexed: 10/20/2023]
Abstract
KEY MESSAGE Multi-trial genome wide association study of plasticity indices allow to detect QTLs specifically involved in the genotype x water availability interaction. Concerns regarding high maize yield losses due to increasing occurrences of drought events are growing, and breeders are still looking for molecular markers for drought tolerance. However, the genetic determinism of traits in response to drought is highly complex and identification of causal regions is a tremendous task. Here, we exploit the phenotypic data obtained from four trials carried out on a phenotyping platform, where a diversity panel of 254 maize hybrids was grown under well-watered and water deficit conditions, to investigate the genetic bases of the drought response in maize. To dissociate drought effect from other environmental factors, we performed multi-trial genome-wide association study on well-watered and water deficit phenotypic means, and on phenotypic plasticity indices computed from measurements made for six ecophysiological traits. We identify 102 QTLs and 40 plasticity QTLs. Most of them were new compared to those obtained from a previous study on the same dataset. Our results show that plasticity QTLs cover genetic regions not identified by QTLs. Furthermore, for all ecophysiological traits, except one, plasticity QTLs are specifically involved in the genotype by water availability interaction, for which they explain between 60 and 100% of the variance. Altogether, QTLs and plasticity QTLs captured more than 75% of the genotype by water availability interaction variance, and allowed to find new genetic regions. Overall, our results demonstrate the importance of considering phenotypic plasticity to decipher the genetic architecture of trait response to stress.
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Affiliation(s)
- Yacine Djabali
- Université Paris-Saclay, CNRS, INRAE, Université Evry, Institute of Plant Sciences Paris-Saclay (IPS2), 91190, Gif-sur-Yvette, France
- Université de Paris Cité, Institute of Plant Sciences Paris-Saclay (IPS2), 91190, Gif-sur-Yvette, France
- Université Paris-Saclay, INRAE, CNRS, AgroParisTech, GQE-Le Moulon, 91190, Gif-Sur-Yvette, France
| | - Renaud Rincent
- Université Paris-Saclay, INRAE, CNRS, AgroParisTech, GQE-Le Moulon, 91190, Gif-Sur-Yvette, France
| | - Marie-Laure Martin
- Université Paris-Saclay, CNRS, INRAE, Université Evry, Institute of Plant Sciences Paris-Saclay (IPS2), 91190, Gif-sur-Yvette, France.
- Université de Paris Cité, Institute of Plant Sciences Paris-Saclay (IPS2), 91190, Gif-sur-Yvette, France.
- Université Paris-Saclay, AgroParisTech, INRAE, UMR MIA Paris-Saclay, 91120, Palaiseau, France.
| | - Mélisande Blein-Nicolas
- Université Paris-Saclay, INRAE, CNRS, AgroParisTech, GQE-Le Moulon, 91190, Gif-Sur-Yvette, France.
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21
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Bouidghaghen J, Moreau L, Beauchêne K, Chapuis R, Mangel N, Cabrera-Bosquet L, Welcker C, Bogard M, Tardieu F. Robotized indoor phenotyping allows genomic prediction of adaptive traits in the field. Nat Commun 2023; 14:6603. [PMID: 37857601 PMCID: PMC10587076 DOI: 10.1038/s41467-023-42298-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Accepted: 10/06/2023] [Indexed: 10/21/2023] Open
Abstract
Breeding for resilience to climate change requires considering adaptive traits such as plant architecture, stomatal conductance and growth, beyond the current selection for yield. Robotized indoor phenotyping allows measuring such traits at high throughput for speed breeding, but is often considered as non-relevant for field conditions. Here, we show that maize adaptive traits can be inferred in different fields, based on genotypic values obtained indoor and on environmental conditions in each considered field. The modelling of environmental effects allows translation from indoor to fields, but also from one field to another field. Furthermore, genotypic values of considered traits match between indoor and field conditions. Genomic prediction results in adequate ranking of genotypes for the tested traits, although with lesser precision for elite varieties presenting reduced phenotypic variability. Hence, it distinguishes genotypes with high or low values for adaptive traits, conferring either spender or conservative strategies for water use under future climates.
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Affiliation(s)
- Jugurta Bouidghaghen
- LEPSE, Univ Montpellier, INRAE, Montpellier, France
- ARVALIS, Chemin de la côte vieille, Baziège, France
| | - Laurence Moreau
- GQE-Le Moulon, INRAE, Université Paris-Sud, CNRS, AgroParisTech, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Katia Beauchêne
- ARVALIS, 45 Voie Romaine, Ouzouer-Le-Marché, Beauce La Romaine, France
| | | | - Nathalie Mangel
- ARVALIS, Station de recherche et d'expérimentation, Boigneville, France
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22
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Kim KH, Lee BM. Effects of Climate Change and Drought Tolerance on Maize Growth. PLANTS (BASEL, SWITZERLAND) 2023; 12:3548. [PMID: 37896012 PMCID: PMC10610049 DOI: 10.3390/plants12203548] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 10/05/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023]
Abstract
Climate change is affecting all regions of the world with different climates, and the scale of damage is increasing due to the occurrence of various natural disasters. In particular, maize production is highly affected by abnormal climate events such as heat waves and droughts. Increasing temperatures can accelerate growth and shorten the growing season, potentially reducing productivity. Additionally, enhanced temperatures during the ripening period can accelerate the process, reducing crop yields. In addition, drought stress due to water deficit can greatly affect seedling formation, early plant growth, photosynthesis, reproductive growth, and yield, so proper water management is critical to maize growth. Maize, in particular, is tall and broad-leaved, so extreme drought stress at planting can cause leaves to curl and stunt growth. It is important to understand that severe drought can have a detrimental effect on the growth and reproduction of maize. In addition, high temperatures caused by drought stress can inhibit the induction of flowering in male flowers and cause factors that interfere with pollen development. It is therefore important to increase the productivity of all food crops, including maize, while maintaining them in the face of persistent drought caused by climate change. This requires a strategy to develop genetically modified crops and drought-tolerant maize that can effectively respond to climate change. The aim of this paper is to investigate the effects of climate change and drought tolerance on maize growth. We also reviewed molecular breeding techniques to develop drought-tolerant maize varieties in response to climate change.
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Affiliation(s)
| | - Byung-Moo Lee
- Department of Life Science, Dongguk University—Seoul, Seoul 04620, Republic of Korea;
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23
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Ningning Z, Binbin L, Fan Y, Jianzhong C, Yuqian Z, Yejian W, Wenjie Z, Xinghua Z, Shutu X, Jiquan X. Molecular mechanisms of drought resistance using genome-wide association mapping in maize (Zea mays L.). BMC PLANT BIOLOGY 2023; 23:468. [PMID: 37803273 PMCID: PMC10557160 DOI: 10.1186/s12870-023-04489-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 09/26/2023] [Indexed: 10/08/2023]
Abstract
BACKGROUND Drought is a critical abiotic stress that influences maize yield and reduces grain yield when it occurs at the flowering or filling stage. To dissect the genetic architecture of grain yield under drought stress (DS), a genome-wide association analysis was conducted in a maize population composed of diverse inbred lines from five locations under well-watered and DS conditions at flowering in 2019 and 2020. RESULTS Using a fixed and random model circulating probability unification model, a total of 147 loci associated with grain yield or the drought resistance index (DRI) were identified, of which 54 loci were associated with a DRI with an average phenotypic variation explanation of 4.03%. Further, 10 of these loci explained more than 10% of the phenotypic variation. By integrating two public transcriptome datasets, 22 differentially expressed genes were considered as candidate genes, including the cloned gene ZmNAC49, which responds to drought by regulating stomatal density. Enrichment and protein interaction network showed that signaling pathways responded to drought resistance, including jasmonic acid and salicylic acid, mitogen-activated protein kinase, and abscisic acid-activated. Additionally, several transcription factors involved in DS were identified, including basic leucine zipper (GRMZM2G370026), NAC (GRMZM2G347043), and ethylene-responsive element binding protein (GRMZM2G169654). CONCLUSIONS In this study, we nominated several genes as candidate genes for drought resistance by intergrating association maping and transcription analysis. These results provide valuable information for understanding the genetic basis of drought tolerance at the mature stage and for designing drought-tolerant maize breeding.
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Affiliation(s)
- Zhang Ningning
- Key Laboratory of Biology and Genetic Improvement of Maize in Arid Area of Northwest Region, College of Agronomy, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Liu Binbin
- Key Laboratory of Biology and Genetic Improvement of Maize in Arid Area of Northwest Region, College of Agronomy, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Ye Fan
- Key Laboratory of Biology and Genetic Improvement of Maize in Arid Area of Northwest Region, College of Agronomy, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Chang Jianzhong
- Agricultural University of Shanxi, Taiyuan, Shanxi, 030600, China
| | - Zhou Yuqian
- Crop Institute of Gansu Academy of Agricultural Sciences, Lanzhou, Gansu, 730000, China
| | - Wang Yejian
- Institute of Grain Crops, Academy of Agricultural Sciences of Xinjiang, Urumqi, Xinjiang, 830000, China
| | - Zhang Wenjie
- Crop Institute of Ningxia Academy of Agricultural Sciences, Yinchuan, Ningxia, 750000, China
| | - Zhang Xinghua
- Key Laboratory of Biology and Genetic Improvement of Maize in Arid Area of Northwest Region, College of Agronomy, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Xu Shutu
- Key Laboratory of Biology and Genetic Improvement of Maize in Arid Area of Northwest Region, College of Agronomy, Northwest A&F University, Yangling, Shaanxi, 712100, China.
| | - Xue Jiquan
- Key Laboratory of Biology and Genetic Improvement of Maize in Arid Area of Northwest Region, College of Agronomy, Northwest A&F University, Yangling, Shaanxi, 712100, China.
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Li Y, Zhang P, Sheng W, Zhang Z, Rose RJ, Song Y. Securing maize reproductive success under drought stress by harnessing CO 2 fertilization for greater productivity. FRONTIERS IN PLANT SCIENCE 2023; 14:1221095. [PMID: 37860252 PMCID: PMC10582713 DOI: 10.3389/fpls.2023.1221095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 09/19/2023] [Indexed: 10/21/2023]
Abstract
Securing maize grain yield is crucial to meet food and energy needs for the future growing population, especially under frequent drought events and elevated CO2 (eCO2) due to climate change. To maximize the kernel setting rate under drought stress is a key strategy in battling against the negative impacts. Firstly, we summarize the major limitations to leaf source and kernel sink in maize under drought stress, and identified that loss in grain yield is mainly attributed to reduced kernel set. Reproductive drought tolerance can be realized by collective contribution with a greater assimilate import into ear, more available sugars for ovary and silk use, and higher capacity to remobilize assimilate reserve. As such, utilization of CO2 fertilization by improved photosynthesis and greater reserve remobilization is a key strategy for coping with drought stress under climate change condition. We propose that optimizing planting methods and mining natural genetic variation still need to be done continuously, meanwhile, by virtue of advanced genetic engineering and plant phenomics tools, the breeding program of higher photosynthetic efficiency maize varieties adapted to eCO2 can be accelerated. Consequently, stabilizing maize production under drought stress can be achieved by securing reproductive success by harnessing CO2 fertilization.
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Affiliation(s)
- Yangyang Li
- College of Agronomy, Anhui Agricultural University, Hefei, Anhui, China
| | - Pengpeng Zhang
- College of Agronomy, Anhui Agricultural University, Hefei, Anhui, China
| | - Wenjing Sheng
- College of Agronomy, Anhui Agricultural University, Hefei, Anhui, China
| | - Zixiang Zhang
- College of Agronomy, Anhui Agricultural University, Hefei, Anhui, China
| | - Ray J. Rose
- School of Environmental and Life Sciences, The University of Newcastle, Newcastle, NSW, Australia
| | - Youhong Song
- College of Agronomy, Anhui Agricultural University, Hefei, Anhui, China
- Centre for Crop Science, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Brisbane, QLD, Australia
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25
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Menamo T, Borrell AK, Mace E, Jordan DR, Tao Y, Hunt C, Kassahun B. Genetic dissection of root architecture in Ethiopian sorghum landraces. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2023; 136:209. [PMID: 37715848 DOI: 10.1007/s00122-023-04457-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 08/28/2023] [Indexed: 09/18/2023]
Abstract
KEY MESSAGE This study quantified genetic variation in root system architecture (root number, angle, length and dry mass) within a diversity panel of 1771 Ethiopian sorghum landraces and identified 22 genomic regions associated with the root variations. The root system architecture (RSA) of crop plants influences adaptation to water-limited conditions and determines the capacity of a plant to access soil water and nutrients. Four key root traits (number, angle, length and dry mass) were evaluated in a diversity panel of 1771 Ethiopian sorghum landraces using purpose-built root chambers. Significant genetic variation was observed in all studied root traits, with nodal root angle ranging from 16.4° to 26.6°, with a high repeatability of 78.9%. Genome wide association studies identified a total of 22 genomic regions associated with root traits which were distributed on all chromosomes except chromosome SBI-10. Among the 22 root genomic regions, 15 co-located with RSA trait QTL previously identified in sorghum, with the remaining seven representing novel RSA QTL. The majority (85.7%) of identified root angle QTL also co-localized with QTL previously identified for stay-green in sorghum. This suggests that the stay-green phenotype might be associated with root architecture that enhances water extraction during water stress conditions. The results open avenues for manipulating root phenotypes to improve productivity in abiotic stress environments via marker-assisted selection.
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Affiliation(s)
- Temesgen Menamo
- College of Agriculture and Veterinary Medicine, Jimma University, P.O. Box 307, Jimma, Ethiopia
| | - Andrew K Borrell
- Queensland Alliance for Agriculture and Food Innovation (QAAFI), University of Queensland, Hermitage Research Facility, Warwick, QLD, 4370, Australia
| | - Emma Mace
- Queensland Alliance for Agriculture and Food Innovation (QAAFI), University of Queensland, Hermitage Research Facility, Warwick, QLD, 4370, Australia
- Agri-Science Queensland, Department of Agriculture and Fisheries, Hermitage Research Facility, Warwick, QLD, 4370, Australia
| | - David R Jordan
- Queensland Alliance for Agriculture and Food Innovation (QAAFI), University of Queensland, Hermitage Research Facility, Warwick, QLD, 4370, Australia
| | - Yongfu Tao
- Queensland Alliance for Agriculture and Food Innovation (QAAFI), University of Queensland, Hermitage Research Facility, Warwick, QLD, 4370, Australia
| | - Colleen Hunt
- Agri-Science Queensland, Department of Agriculture and Fisheries, Hermitage Research Facility, Warwick, QLD, 4370, Australia
| | - Bantte Kassahun
- College of Agriculture and Veterinary Medicine, Jimma University, P.O. Box 307, Jimma, Ethiopia.
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26
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Messina CD, Gho C, Hammer GL, Tang T, Cooper M. Two decades of harnessing standing genetic variation for physiological traits to improve drought tolerance in maize. JOURNAL OF EXPERIMENTAL BOTANY 2023; 74:4847-4861. [PMID: 37354091 PMCID: PMC10474595 DOI: 10.1093/jxb/erad231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 06/15/2023] [Indexed: 06/26/2023]
Abstract
We review approaches to maize breeding for improved drought tolerance during flowering and grain filling in the central and western US corn belt and place our findings in the context of results from public breeding. Here we show that after two decades of dedicated breeding efforts, the rate of crop improvement under drought increased from 6.2 g m-2 year-1 to 7.5 g m-2 year-1, closing the genetic gain gap with respect to the 8.6 g m-2 year-1 observed under water-sufficient conditions. The improvement relative to the long-term genetic gain was possible by harnessing favourable alleles for physiological traits available in the reference population of genotypes. Experimentation in managed stress environments that maximized the genetic correlation with target environments was key for breeders to identify and select for these alleles. We also show that the embedding of physiological understanding within genomic selection methods via crop growth models can hasten genetic gain under drought. We estimate a prediction accuracy differential (Δr) above current prediction approaches of ~30% (Δr=0.11, r=0.38), which increases with increasing complexity of the trait environment system as estimated by Shannon information theory. We propose this framework to inform breeding strategies for drought stress across geographies and crops.
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Affiliation(s)
- Carlos D Messina
- Horticultural Sciences Department, University of Florida, Gainesville, FL, USA
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, The University of Queensland, Brisbane, Qld 4072, Australia
| | - Carla Gho
- School of Agriculture & Food Sciences, The University of Queensland, Brisbane, Qld 4072, Australia
| | - Graeme L Hammer
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, The University of Queensland, Brisbane, Qld 4072, Australia
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Brisbane, Qld 4072, Australia
| | - Tom Tang
- Corteva Agrisciences, Johnston, IA, USA
| | - Mark Cooper
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, The University of Queensland, Brisbane, Qld 4072, Australia
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Brisbane, Qld 4072, Australia
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27
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Głowacka K, Kromdijk J, Salesse-Smith CE, Smith C, Driever SM, Long SP. Is chloroplast size optimal for photosynthetic efficiency? THE NEW PHYTOLOGIST 2023; 239:2197-2211. [PMID: 37357337 DOI: 10.1111/nph.19091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Accepted: 06/04/2023] [Indexed: 06/27/2023]
Abstract
Improving photosynthetic efficiency has recently emerged as a promising way to increase crop production in a sustainable manner. While chloroplast size may affect photosynthetic efficiency in several ways, we aimed to explore whether chloroplast size manipulation can be a viable approach to improving photosynthetic performance. Several tobacco (Nicotiana tabacum) lines with contrasting chloroplast sizes were generated via manipulation of chloroplast division genes to assess photosynthetic performance under steady-state and fluctuating light. A selection of lines was included in a field trial to explore productivity. Lines with enlarged chloroplasts underperformed in most of the measured traits. Lines with smaller and more numerous chloroplasts showed a similar efficiency compared with wild-type (WT) tobacco. Chloroplast size only weakly affected light absorptance and light profiles within the leaf. Increasing chloroplast size decreased mesophyll conductance (gm ) but decreased chloroplast size did not increase gm . Increasing chloroplast size reduced chloroplast movements and enhanced non-photochemical quenching. The chloroplast smaller than WT appeared to be no better than WT for photosynthetic efficiency and productivity under field conditions. The results indicate that chloroplast size manipulations are therefore unlikely to lead to higher photosynthetic efficiency or growth.
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Affiliation(s)
- Katarzyna Głowacka
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, 1206 West Gregory Drive, Urbana, IL, 61801, USA
- Department of Biochemistry and Center for Plant Science Innovation, University of Nebraska-Lincoln, 1901 Vine Street, Lincoln, NE, 68588, USA
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszynska 34, Poznań, 60-479, Poland
| | - Johannes Kromdijk
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, 1206 West Gregory Drive, Urbana, IL, 61801, USA
- Department of Plant Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EA, UK
| | - Coralie E Salesse-Smith
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, 1206 West Gregory Drive, Urbana, IL, 61801, USA
| | - Cailin Smith
- Department of Biochemistry and Center for Plant Science Innovation, University of Nebraska-Lincoln, 1901 Vine Street, Lincoln, NE, 68588, USA
- Goshen College, 1700 South Main Street, Goshen, IN, 46526, USA
| | - Steven M Driever
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, 1206 West Gregory Drive, Urbana, IL, 61801, USA
- Centre for Crop Systems Analysis, Wageningen University, Bornsesteeg 48, Wageningen, 6708PE, the Netherlands
| | - Stephen P Long
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, 1206 West Gregory Drive, Urbana, IL, 61801, USA
- Departments of Plant Biology and of Crop Sciences, University of Illinois, 505 South Goodwin Avenue, Urbana, IL, 61801, USA
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28
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Bernacchi CJ, Ruiz-Vera UM, Siebers MH, DeLucia NJ, Ort DR. Short- and long-term warming events on photosynthetic physiology, growth, and yields of field grown crops. Biochem J 2023; 480:999-1014. [PMID: 37418286 PMCID: PMC10422931 DOI: 10.1042/bcj20220433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 06/15/2023] [Accepted: 06/16/2023] [Indexed: 07/08/2023]
Abstract
Global temperatures are rising from increasing concentrations of greenhouse gases in the atmosphere associated with anthropogenic activities. Global warming includes a warmer shift in mean temperatures as well as increases in the probability of extreme heating events, termed heat waves. Despite the ability of plants to cope with temporal variations in temperature, global warming is increasingly presenting challenges to agroecosystems. The impact of warming on crop species has direct consequences on food security, therefore understanding impacts and opportunities to adapt crops to global warming necessitates experimentation that allows for modification of growth environments to represent global warming scenarios. Published studies addressing crop responses to warming are extensive, however, in-field studies where growth temperature is manipulated to mimic global warming are limited. Here, we provide an overview of in-field heating techniques employed to understand crop responses to warmer growth environments. We then focus on key results associated with season-long warming, as expected with rising global mean temperatures, and with heat waves, as a consequence of increasing temperature variability and rising global mean temperatures. We then discuss the role of rising temperatures on atmospheric water vapor pressure deficit and potential implications for crop photosynthesis and productivity. Finally, we review strategies by which crop photosynthetic processes might be optimized to adapt crops to the increasing temperatures and frequencies of heat waves. Key findings from this review are that higher temperatures consistently reduce photosynthesis and yields of crops even as atmospheric carbon dioxide increases, yet potential strategies to minimize losses from high-temperature exist.
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Affiliation(s)
- Carl J. Bernacchi
- Global Change and Photosynthesis Research Unit, USDA-ARS, Urbana, IL, U.S.A
- Department of Plant Biology, University of Illinois Urbana-Champaign, Urbana, IL, U.S.A
- Carl R Woese Institute for Genomic Biology, University of Illinois Urbana-Champaign, Urbana, IL, U.S.A
| | | | - Matthew H. Siebers
- Global Change and Photosynthesis Research Unit, USDA-ARS, Urbana, IL, U.S.A
- Department of Plant Biology, University of Illinois Urbana-Champaign, Urbana, IL, U.S.A
| | - Nicholas J. DeLucia
- Global Change and Photosynthesis Research Unit, USDA-ARS, Urbana, IL, U.S.A
- Department of Plant Biology, University of Illinois Urbana-Champaign, Urbana, IL, U.S.A
| | - Donald R. Ort
- Department of Plant Biology, University of Illinois Urbana-Champaign, Urbana, IL, U.S.A
- Carl R Woese Institute for Genomic Biology, University of Illinois Urbana-Champaign, Urbana, IL, U.S.A
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Al-Salman Y, Cano FJ, Pan L, Koller F, Piñeiro J, Jordan D, Ghannoum O. Anatomical drivers of stomatal conductance in sorghum lines with different leaf widths grown under different temperatures. PLANT, CELL & ENVIRONMENT 2023; 46:2142-2158. [PMID: 37066624 DOI: 10.1111/pce.14592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 03/29/2023] [Accepted: 04/03/2023] [Indexed: 06/08/2023]
Abstract
Sustaining crop productivity and resilience in water-limited environments and under rising temperatures are matters of concern worldwide. We investigated the leaf anatomical traits that underpin our recently identified link between leaf width (LW) and intrinsic water use efficiency (iWUE), as traits of interest in plant breeding. Ten sorghum lines with varying LW were grown under three temperatures to expand the range of variation of both LW and gas exchange rates. Leaf gas exchange, surface morphology and cross-sectional anatomy were measured and analysed using structural equations modelling. Narrower leaves had lower stomatal conductance (gs ) and higher iWUE across growth temperatures. They also had smaller intercellular airspaces, stomatal size, percentage of open stomatal aperture relative to maximum, hydraulic pathway, mesophyll thickness, and leaf mass per area. Structural modelling revealed a developmental association among leaf anatomical traits that underpinned gs variation in sorghum. Growing temperature and LW both impacted leaf gas exchange rates, but only LW directly impacted leaf anatomy. Wider leaves may be more productive under well-watered conditions, but consume more water for growth and development, which is detrimental under water stress.
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Affiliation(s)
- Yazen Al-Salman
- ARC Centre of Excellence for Translational Photosynthesis, Canberra, ACT, Australia
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith, New South Wales, Australia
| | - Francisco J Cano
- ARC Centre of Excellence for Translational Photosynthesis, Canberra, ACT, Australia
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith, New South Wales, Australia
- Instituto de Ciencias Forestales (ICIFOR-INIA), CSIC, Madrid, Spain
| | - Ling Pan
- ARC Centre of Excellence for Translational Photosynthesis, Canberra, ACT, Australia
- Department of Grassland Science, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Fiona Koller
- ARC Centre of Excellence for Translational Photosynthesis, Canberra, ACT, Australia
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith, New South Wales, Australia
| | - Juan Piñeiro
- Department of Biology, IVAGRO, Campus de Excelencia Internacional Agroalimentario, Capus del Rio San Pedro, University of Cádiz, Puerto Real, Spain
| | - David Jordan
- ARC Centre of Excellence for Translational Photosynthesis, Canberra, ACT, Australia
- Hermitage Research Facility, The University of Queensland, Warwick, Queensland, Australia
- Agri-Science Queensland, Department of Agriculture & Fisheries, Hermitage Research Facility, Warwick, Queensland, Australia
| | - Oula Ghannoum
- ARC Centre of Excellence for Translational Photosynthesis, Canberra, ACT, Australia
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith, New South Wales, Australia
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Kusmec A, Attigala L, Dai X, Srinivasan S, Yeh CTE, Schnable PS. A genetic tradeoff for tolerance to moderate and severe heat stress in US hybrid maize. PLoS Genet 2023; 19:e1010799. [PMID: 37410701 DOI: 10.1371/journal.pgen.1010799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 05/26/2023] [Indexed: 07/08/2023] Open
Abstract
Global climate change is increasing both average temperatures and the frequencies of extreme high temperatures. Past studies have documented a strong negative effect of exposures to temperatures >30°C on hybrid maize yields. However, these studies could not disentangle genetic adaptation via artificial selection from changes in agronomic practices. Because most of the earliest maize hybrids are no longer available, side-by-side comparisons with modern hybrids under current field conditions are generally impossible. Here, we report on the collection and curation of 81 years of public yield trial records covering 4,730 maize hybrids, which enabled us to model genetic variation for temperature responses among maize hybrids. We show that selection may have indirectly and inconsistently contributed to the genetic adaptation of maize to moderate heat stress over this time period while preserving genetic variance for continued adaptation. However, our results reveal the existence of a genetic tradeoff for tolerance to moderate and severe heat stress, leading to a decrease in tolerance to severe heat stress over the same time period. Both trends are particularly conspicuous since the mid-1970s. Such a tradeoff poses challenges to the continued adaptation of maize to warming climates due to a projected increase in the frequency of extreme heat events. Nevertheless, given recent advances in phenomics, enviromics, and physiological modeling, our results offer a degree of optimism for the capacity of plant breeders to adapt maize to warming climates, assuming appropriate levels of R&D investment.
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Affiliation(s)
- Aaron Kusmec
- Department of Agronomy, Iowa State University; Ames, Iowa, United States of America
| | - Lakshmi Attigala
- Department of Agronomy, Iowa State University; Ames, Iowa, United States of America
| | - Xiongtao Dai
- Department of Statistics, Iowa State University; Ames, Iowa, United States of America
| | - Srikant Srinivasan
- Plant Sciences Institute, Iowa State University; Ames, Iowa, United States of America
| | - Cheng-Ting Eddy Yeh
- Plant Sciences Institute, Iowa State University; Ames, Iowa, United States of America
| | - Patrick S Schnable
- Department of Agronomy, Iowa State University; Ames, Iowa, United States of America
- Plant Sciences Institute, Iowa State University; Ames, Iowa, United States of America
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31
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Sun W, Fleisher D, Timlin D, Ray C, Wang Z, Beegum S, Reddy V. Projected long-term climate trends reveal the critical role of vapor pressure deficit for soybean yields in the US Midwest. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 878:162960. [PMID: 36958552 DOI: 10.1016/j.scitotenv.2023.162960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 02/23/2023] [Accepted: 03/16/2023] [Indexed: 05/13/2023]
Abstract
Extreme climate events including heat waves and droughts are projected to become more frequent under future climate change conditions. However, the mechanisms between soybean yields and climate factors, specifically involving variable rainfall and high heat episodes, are still unclear, particularly with respect to spatial trends in the United States (US) Midwest. A recently modified version of the model GLYCIM was used to evaluate rainfed soybean production across 12 states at a 10 km spatial resolution for three time periods (2011-2020, 2051-2060, 2091-2099) under Representative Concentration Pathway (RCP) scenarios 4.5 and 8.5. Results showed that except for the northernmost Midwest counties, most of the current rainfed cropping system in the Midwest would suffer a 24.6-47.4 % yield loss without considering the CO2 fertility effect. Incorporating the effect of elevated CO2 showed a smaller yield loss of 11.6-29.5 %. The increased frequency of extreme degree days (EDD) or accumulation of hourly temperatures above 30 °C associated with increased vapor pressure deficit (VPD) played a key role in contributing to water deficits and resultant crop losses under these future climate conditions. Although a relatively weak relationship between summer rainfall and crop yield was observed, decreased rainfall caused VPD to increase which induced crop water deficits. These findings suggest that it is crucial to consider VPD along with high temperature and low rainfall trends simultaneously for development of potential management or breeding-based adaptative strategies for soybean.
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Affiliation(s)
- Wenguang Sun
- Adaptive Cropping System Laboratory, USDA-ARS, Beltsville, MD 20705, USA; Nebraska Water Center, University of Nebraska Lincoln, Lincoln, NE 68588-6204, USA.
| | - David Fleisher
- Adaptive Cropping System Laboratory, USDA-ARS, Beltsville, MD 20705, USA.
| | - Dennis Timlin
- Adaptive Cropping System Laboratory, USDA-ARS, Beltsville, MD 20705, USA
| | - Chittaranjan Ray
- Adaptive Cropping System Laboratory, USDA-ARS, Beltsville, MD 20705, USA; Nebraska Water Center, University of Nebraska Lincoln, Lincoln, NE 68588-6204, USA
| | - Zhuangji Wang
- Adaptive Cropping System Laboratory, USDA-ARS, Beltsville, MD 20705, USA; Department of Plant Science and Landscape Architecture, University of Maryland, College Park, MD 20742, USA
| | - Sahila Beegum
- Adaptive Cropping System Laboratory, USDA-ARS, Beltsville, MD 20705, USA; Nebraska Water Center, University of Nebraska Lincoln, Lincoln, NE 68588-6204, USA
| | - Vangimalla Reddy
- Adaptive Cropping System Laboratory, USDA-ARS, Beltsville, MD 20705, USA
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Sheeran L, Rasmussen A. Aerial roots elevate indoor plant health: Physiological and morphological responses of three high-humidity adapted Araceae species to indoor humidity levels. PLANT, CELL & ENVIRONMENT 2023; 46:1873-1884. [PMID: 36786325 DOI: 10.1111/pce.14568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 02/10/2023] [Accepted: 02/12/2023] [Indexed: 05/04/2023]
Abstract
Heightened by the COVID-19 pandemic there has been a global increase in urban greenspace appreciation. Indoor plants are equally important for improving mental health and air quality but despite evolving in humid (sub)tropical environments with aerial root types, planting systems ignore aerial resource supply. This study directly compared nutrient uptake preferences of aerial and soil-formed roots of three common houseplant species under high and ambient relative humidities. Growth and physiology parameters were measured weekly for Anthurium andreanum, Epipremnum aureum and Philodendron scandens grown in custom made growth chambers. Both aerial and soil-formed roots were then fed mixtures of nitrate, ammonium and glycine, with one source labelled with 15 N to determine uptake rates and maximum capacities. Aerial roots were consistently better at nitrogen uptake than soil roots but no species, root type or humidity condition showed a preference for a particular nitrogen source. All three species grew more in high humidity, with aerial roots demonstrating the greatest biomass increase. Higher humidities for indoor niches, together with fertiliser applications to aerial roots will support indoor plant growth, creating lush calming indoor environments for people inhabitants.
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Affiliation(s)
- Laura Sheeran
- Division of Agriculture and Environmental Science, School of Biosciences, The University of Nottingham, Sutton Bonington, UK
| | - Amanda Rasmussen
- Division of Agriculture and Environmental Science, School of Biosciences, The University of Nottingham, Sutton Bonington, UK
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Chen S, Dang D, Liu Y, Ji S, Zheng H, Zhao C, Dong X, Li C, Guan Y, Zhang A, Ruan Y. Genome-wide association study presents insights into the genetic architecture of drought tolerance in maize seedlings under field water-deficit conditions. FRONTIERS IN PLANT SCIENCE 2023; 14:1165582. [PMID: 37223800 PMCID: PMC10200999 DOI: 10.3389/fpls.2023.1165582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 03/24/2023] [Indexed: 05/25/2023]
Abstract
Introduction Drought stress is one of the most serious abiotic stresses leading to crop yield reduction. Due to the wide range of planting areas, the production of maize is particularly affected by global drought stress. The cultivation of drought-resistant maize varieties can achieve relatively high, stable yield in arid and semi-arid zones and in the erratic rainfall or occasional drought areas. Therefore, to a great degree, the adverse impact of drought on maize yield can be mitigated by developing drought-resistant or -tolerant varieties. However, the efficacy of traditional breeding solely relying on phenotypic selection is not adequate for the need of maize drought-resistant varieties. Revealing the genetic basis enables to guide the genetic improvement of maize drought tolerance. Methods We utilized a maize association panel of 379 inbred lines with tropical, subtropical and temperate backgrounds to analyze the genetic structure of maize drought tolerance at seedling stage. We obtained the high quality 7837 SNPs from DArT's and 91,003 SNPs from GBS, and a resultant combination of 97,862 SNPs of GBS with DArT's. The maize population presented the lower her-itabilities of the seedling emergence rate (ER), seedling plant height (SPH) and grain yield (GY) under field drought conditions. Results GWAS analysis by MLM and BLINK models with the phenotypic data and 97862 SNPs revealed 15 variants that were significantly independent related to drought-resistant traits at the seedling stage above the threshold of P < 1.02 × 10-5. We found 15 candidate genes for drought resistance at the seedling stage that may involve in (1) metabolism (Zm00001d012176, Zm00001d012101, Zm00001d009488); (2) programmed cell death (Zm00001d053952); (3) transcriptional regulation (Zm00001d037771, Zm00001d053859, Zm00001d031861, Zm00001d038930, Zm00001d049400, Zm00001d045128 and Zm00001d043036); (4) autophagy (Zm00001d028417); and (5) cell growth and development (Zm00001d017495). The most of them in B73 maize line were shown to change the expression pattern in response to drought stress. These results provide useful information for understanding the genetic basis of drought stress tolerance of maize at seedling stage.
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Affiliation(s)
- Shan Chen
- Shenyang City Key Laboratory of Maize Genomic Selection Breeding, College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Dongdong Dang
- Shenyang City Key Laboratory of Maize Genomic Selection Breeding, College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, Liaoning, China
- CIMMYT-China Specialty Maize Research Center, Crop Breeding and Cultivation Research Institute, Shang-hai Academy of Agricultural Sciences, Shanghai, China
- International Maize and Wheat Improvement Center (CIMMYT), Texcoco, Mexico
| | - Yubo Liu
- CIMMYT-China Specialty Maize Research Center, Crop Breeding and Cultivation Research Institute, Shang-hai Academy of Agricultural Sciences, Shanghai, China
- International Maize and Wheat Improvement Center (CIMMYT), Texcoco, Mexico
| | - Shuwen Ji
- Shenyang City Key Laboratory of Maize Genomic Selection Breeding, College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Hongjian Zheng
- CIMMYT-China Specialty Maize Research Center, Crop Breeding and Cultivation Research Institute, Shang-hai Academy of Agricultural Sciences, Shanghai, China
- International Maize and Wheat Improvement Center (CIMMYT), Texcoco, Mexico
| | - Chenghao Zhao
- Dandong Academy of Agricultural Sciences, Fengcheng, Liaoning, China
| | - Xiaomei Dong
- Shenyang City Key Laboratory of Maize Genomic Selection Breeding, College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Cong Li
- Shenyang City Key Laboratory of Maize Genomic Selection Breeding, College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Yuan Guan
- CIMMYT-China Specialty Maize Research Center, Crop Breeding and Cultivation Research Institute, Shang-hai Academy of Agricultural Sciences, Shanghai, China
- International Maize and Wheat Improvement Center (CIMMYT), Texcoco, Mexico
| | - Ao Zhang
- Shenyang City Key Laboratory of Maize Genomic Selection Breeding, College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Yanye Ruan
- Shenyang City Key Laboratory of Maize Genomic Selection Breeding, College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, Liaoning, China
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Sarkar B, Varalaxmi Y, Vanaja M, RaviKumar N, Prabhakar M, Yadav SK, Maheswari M, Singh VK. Mapping of QTLs for morphophysiological and yield traits under water-deficit stress and well-watered conditions in maize. FRONTIERS IN PLANT SCIENCE 2023; 14:1124619. [PMID: 37223807 PMCID: PMC10200936 DOI: 10.3389/fpls.2023.1124619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 03/27/2023] [Indexed: 05/25/2023]
Abstract
Maize productivity is significantly impacted by drought; therefore, improvement of drought tolerance is a critical goal in maize breeding. To achieve this, a better understanding of the genetic basis of drought tolerance is necessary. Our study aimed to identify genomic regions associated with drought tolerance-related traits by phenotyping a mapping population of recombinant inbred lines (RILs) for two seasons under well-watered (WW) and water-deficit (WD) conditions. We also used single nucleotide polymorphism (SNP) genotyping through genotyping-by-sequencing to map these regions and attempted to identify candidate genes responsible for the observed phenotypic variation. Phenotyping of the RILs population revealed significant variability in most of the traits, with normal frequency distributions, indicating their polygenic nature. We generated a linkage map using 1,241 polymorphic SNPs distributed over 10 chromosomes (chrs), covering a total genetic distance of 5,471.55 cM. We identified 27 quantitative trait loci (QTLs) associated with various morphophysiological and yield-related traits, with 13 QTLs identified under WW conditions and 12 under WD conditions. We found one common major QTL (qCW2-1) for cob weight and a minor QTL (qCH1-1) for cob height that were consistently identified under both water regimes. We also detected one major and one minor QTL for the Normalized Difference Vegetation Index (NDVI) trait under WD conditions on chr 2, bin 2.10. Furthermore, we identified one major QTL (qCH1-2) and one minor QTL (qCH1-1) on chr 1 that were located at different genomic positions to those identified in earlier studies. We found co-localized QTLs for stomatal conductance and grain yield on chr 6 (qgs6-2 and qGY6-1), while co-localized QTLs for stomatal conductance and transpiration rate were identified on chr 7 (qgs7-1 and qTR7-1). We also attempted to identify the candidate genes responsible for the observed phenotypic variation; our analysis revealed that the major candidate genes associated with QTLs detected under water deficit conditions were related to growth and development, senescence, abscisic acid (ABA) signaling, signal transduction, and transporter activity in stress tolerance. The QTL regions identified in this study may be useful in designing markers that can be utilized in marker-assisted selection breeding. In addition, the putative candidate genes can be isolated and functionally characterized so that their role in imparting drought tolerance can be more fully understood.
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Luo N, Meng Q, Feng P, Qu Z, Yu Y, Liu DL, Müller C, Wang P. China can be self-sufficient in maize production by 2030 with optimal crop management. Nat Commun 2023; 14:2637. [PMID: 37149677 PMCID: PMC10164166 DOI: 10.1038/s41467-023-38355-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 04/27/2023] [Indexed: 05/08/2023] Open
Abstract
Population growth and economic development in China has increased the demand for food and animal feed, raising questions regarding China's future maize production self-sufficiency. Here, we address this challenge by combining data-driven projections with a machine learning method on data from 402 stations, with data from 87 field experiments across China. Current maize yield would be roughly doubled with the implementation of optimal planting density and management. In the 2030 s, we estimate a 52% yield improvement through dense planting and soil improvement under a high-end climate forcing Shared Socio-Economic Pathway (SSP585), compared with a historical climate trend. Based on our results, yield gains from soil improvement outweigh the adverse effects of climate change. This implies that China can be self-sufficient in maize by using current cropping areas. Our results challenge the view of yield stagnation in most global areas and provide an example of how food security can be achieved with optimal crop-soil management under future climate change scenarios.
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Affiliation(s)
- Ning Luo
- College of Agronomy and Biotechnology, China Agricultural University, 100193, Beijing, China
- Potsdam Institute for Climate Impact Research (PIK), Member of the Leibniz Association, 14412, Potsdam, Germany
| | - Qingfeng Meng
- College of Agronomy and Biotechnology, China Agricultural University, 100193, Beijing, China.
| | - Puyu Feng
- College of Land Science and Technology, China Agricultural University, 100193, Beijing, China
| | - Ziren Qu
- College of Agronomy and Biotechnology, China Agricultural University, 100193, Beijing, China
| | - Yonghong Yu
- College of Agronomy and Biotechnology, China Agricultural University, 100193, Beijing, China
| | - De Li Liu
- NSW Department of Primary Industries, Wagga Wagga Agricultural Institute, Wagga Wagga, NSW, 2650, Australia
- Climate Change Research Centre and ARC Centre of Excellence for Climate Extremes, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Christoph Müller
- Potsdam Institute for Climate Impact Research (PIK), Member of the Leibniz Association, 14412, Potsdam, Germany
| | - Pu Wang
- College of Agronomy and Biotechnology, China Agricultural University, 100193, Beijing, China
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Fu J, Jian Y, Wang X, Li L, Ciais P, Zscheischler J, Wang Y, Tang Y, Müller C, Webber H, Yang B, Wu Y, Wang Q, Cui X, Huang W, Liu Y, Zhao P, Piao S, Zhou F. Extreme rainfall reduces one-twelfth of China's rice yield over the last two decades. NATURE FOOD 2023; 4:416-426. [PMID: 37142747 DOI: 10.1038/s43016-023-00753-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Accepted: 04/11/2023] [Indexed: 05/06/2023]
Abstract
Extreme climate events constitute a major risk to global food production. Among these, extreme rainfall is often dismissed from historical analyses and future projections, the impacts and mechanisms of which remain poorly understood. Here we used long-term nationwide observations and multi-level rainfall manipulative experiments to explore the magnitude and mechanisms of extreme rainfall impacts on rice yield in China. We find that rice yield reductions due to extreme rainfall were comparable to those induced by extreme heat over the last two decades, reaching 7.6 ± 0.9% (one standard error) according to nationwide observations and 8.1 ± 1.1% according to the crop model incorporating the mechanisms revealed from manipulative experiments. Extreme rainfall reduces rice yield mainly by limiting nitrogen availability for tillering that lowers per-area effective panicles and by exerting physical disturbance on pollination that declines per-panicle filled grains. Considering these mechanisms, we projected ~8% additional yield reduction due to extreme rainfall under warmer climate by the end of the century. These findings demonstrate that it is critical to account for extreme rainfall in food security assessments.
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Affiliation(s)
- Jin Fu
- Institute of Carbon Neutrality, Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, China
| | - Yiwei Jian
- Institute of Carbon Neutrality, Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, China
| | - Xuhui Wang
- Institute of Carbon Neutrality, Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, China
| | - Laurent Li
- Laboratoire de Météorologie Dynamique, CNRS, Sorbonne Université, Paris, France
| | - Philippe Ciais
- Laboratoire des Sciences du Climat et de l'Environnement, LSCE, Gif sur Yvette, France
- Climate and Atmosphere Research Center (CARE-C), The Cyprus Institute, Nicosia, Cyprus
| | - Jakob Zscheischler
- Department of Computational Hydrosystems, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany
| | - Yin Wang
- Institute of Ecology, Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, China
| | - Yanhong Tang
- Institute of Ecology, Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, China
| | - Christoph Müller
- Potsdam Institute for Climate Impact Research (PIK), Member of the Leibniz Association, Potsdam, Germany
| | - Heidi Webber
- Leibniz Centre for Agricultural Landscape Research, Müncheberg, Germany
| | - Bo Yang
- Key Laboratory of Nonpoint Source Pollution Control, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yali Wu
- National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Chinese Research Academy of Environmental Sciences, Beijing, China
| | - Qihui Wang
- Institute of Carbon Neutrality, Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, China
| | - Xiaoqing Cui
- Institute of Carbon Neutrality, Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, China
| | - Weichen Huang
- Institute of Carbon Neutrality, Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, China
| | - Yongqiang Liu
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
| | - Pengjun Zhao
- School of Urban Planning and Design, Peking University Shenzhen Graduate School, Shenzhen, China
| | - Shilong Piao
- Institute of Carbon Neutrality, Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, China
| | - Feng Zhou
- Institute of Carbon Neutrality, Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, China.
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Wu W, Zhong Y, Liu Y, Xu R, Zhang X, Liu N, Guo D. A new insight into the biosynthesis, structure, and functionality of waxy maize starch under drought stress. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023. [PMID: 37005332 DOI: 10.1002/jsfa.12599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 03/11/2023] [Accepted: 04/03/2023] [Indexed: 06/19/2023]
Abstract
BACKGROUND Drought stress (DS) is the main abiotic stress that maize suffers during its whole growth period, and maize is also sensitive to DS. It had been demonstrated that DS could improve the quality of normal maize starch. However, waxy maize, which has special properties, has not been explored in depth, which limits the breeding and cultivation of waxy maize varieties and the application of waxy maize starch. Therefore, in this study, we investigated the effects of DS on the biosynthesis, structure, and functionality of waxy maize starch. RESULTS The results showed that DS decreased the expression level of SSIIb, SSIIIa, GBSSIIa, SBEI, SBEIIb, ISAII, and PUL, but increased the expression level of SSI and SBEIIa. DS did not change the average chain length of amylopectin, while increased the relative content of fa chains (RCfa ) and decreased the RCfb1 and RCfb3 . Furthermore, DS decreased the amylose content, amorphous lamellar distance da , semi-crystalline repeat distance, and average particle size, whereas it increased the relative crystallinity, crystalline distance dc , the content of rapidly digested starch in the uncooked system and resistant starch content in both the uncooked and cooked system. CONCLUSIONS For waxy maize, DS could raise the relative expression level of SSI and SBEIIa, thus increasing RCfa . The larger number of RCfa could create steric hindrance, which can lead to producing more resistant starch in waxy maize starch. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Wenhao Wu
- Key Laboratory of Biology and Genetic Improvement of Maize in Arid Area of Northwest Region, College of Agronomy, Northwest A&F University, Yangling, China
| | - Yuyue Zhong
- Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Frederiksberg C, Denmark
| | - Yilin Liu
- Key Laboratory of Biology and Genetic Improvement of Maize in Arid Area of Northwest Region, College of Agronomy, Northwest A&F University, Yangling, China
| | - Renyuan Xu
- Key Laboratory of Biology and Genetic Improvement of Maize in Arid Area of Northwest Region, College of Agronomy, Northwest A&F University, Yangling, China
| | - Xudong Zhang
- Institute of Crop Science, Quality of Plant Products, University of Hohenheim, Stuttgart, Germany
| | - Na Liu
- Key Laboratory of Biology and Genetic Improvement of Maize in Arid Area of Northwest Region, College of Agronomy, Northwest A&F University, Yangling, China
| | - Dongwei Guo
- Key Laboratory of Biology and Genetic Improvement of Maize in Arid Area of Northwest Region, College of Agronomy, Northwest A&F University, Yangling, China
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Hannachi S, Signore A, Mechi L. Alleviation of Associated Drought and Salinity Stress' Detrimental Impacts on an Eggplant Cultivar ('Bonica F1') by Adding Biochar. PLANTS (BASEL, SWITZERLAND) 2023; 12:1399. [PMID: 36987085 PMCID: PMC10054642 DOI: 10.3390/plants12061399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/14/2023] [Accepted: 03/20/2023] [Indexed: 06/19/2023]
Abstract
To investigate the impact of biochar on eggplant growth, physiology, and yield parameters under separate and associated drought and salt stress, a pot experiment was carried out. An eggplant variety ('Bonica F1') was exposed to one NaCl concentration (S1 = 300 mM), three irrigation regimes (FI: full irrigation; DI: deficit irrigation; ARD: alternate root-zone drying irrigation), and one dose of biochar (B1 = 6% by weight). Our findings demonstrated that associated drought and salt stress had a greater negative impact on 'Bonica F1' performance in comparison to single drought or salt stress. Whereas, adding biochar to the soil improved the ability of 'Bonica F1' to alleviate the single and associated effects of salt and drought stress. Moreover, in comparison to DI under salinity, biochar addition in ARD significantly increased plant height, aerial biomass, fruit number per plant, and mean fresh weight per fruit by 18.4%, 39.7%, 37.5%, and 36.3%, respectively. Furthermore, under limited and saline irrigation, photosynthetic rate (An), transpiration rate (E), and stomatal conductance (gs) declined. In addition, the interaction between ARD and biochar effectively restored the equilibrium between the plant chemical signal (ABA) and hydraulic signal (leaf water potential). As a result, mainly under salt stress, with ARD treatment, intrinsic water use efficiency (WUEi) and yield traits were much higher than those in DI. Overall, biochar in combination with ARD could be an efficient approach for preserving crop productivity.
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Affiliation(s)
- Sami Hannachi
- Department of Biology, College of Science, University of Hail, P.O. Box 2440, Ha’il 81451, Saudi Arabia
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | - Angelo Signore
- Department of Agricultural and Environmental Science, University of Bari Aldo Moro, Via Amendola 165/A, 70126 Bari, Italy
| | - Lassaad Mechi
- Department of Chemistry, College of Science, University of Hail, P.O. Box 2440, Ha’il 81451, Saudi Arabia
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Cai F, Mi N, Ming H, Zhang Y, Zhang H, Zhang S, Zhao X, Zhang B. Responses of dry matter accumulation and partitioning to drought and subsequent rewatering at different growth stages of maize in Northeast China. FRONTIERS IN PLANT SCIENCE 2023; 14:1110727. [PMID: 37021320 PMCID: PMC10069628 DOI: 10.3389/fpls.2023.1110727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 03/06/2023] [Indexed: 06/19/2023]
Abstract
INTRODUCTION Dry matter accumulation (DMA) and dry matter partitioning (DMP) are important physiological processes determining crop yield formation. Deep understanding of the DMA and DMP processes and their responses to drought are limited by difficulty in acquiring total root biomass. METHODS Pot experiments with treatments quitting and ceasing ear growth (QC) and controlling soil water (WC) during vegetative (VP) and reproductive (RP) growth stages of maize (Zea mays) were conducted in Jinzhou in 2019 and 2020 to investigate the effects of drought and rewatering on DMW and DMP of different organs. RESULTS The response of DMW of reproductive organ to drought was more sensitive than those of vegetative organs, and was maintained after rehydration. Drought during VP (VPWC) reduced more sharply DMW of stalk than of leaves, and that during RP (RPWC) decreased more substantially leaves DMW. The effect of drought on DMPR was inconsistent with that on DMW for each organ. The DMP patterns of maize in different growth stages have adaptability to some level of water stress, and their responses increased with drought severity. Drought increased significantly DMP rates (DMPRs) of vegetative organs and reduced the ear DMPR and harvest index (HI), attributing to the suppressed photosynthates partitioning into ear and dry matter redistribution (DMRD) of vegetative organs, especially for stalk DMRD decreasing 26%. The persistence of drought impact was related to its occurrence stage and degree as well as the duration during rewatering to maturity. The aftereffect of drought during different growth periods on DMP were various, and that of VPWC enlarged and drastically induced the reduction of HI, also was larger than that of RPWC which demonstrated obvious alleviation in the previous responses of DMP and HI. Root-shoot ratio (RSR) increased under VPWC and RPWC and subsequent rehydration. DISCUSSION The DMWs of stalk, roots and leaves were affected by VPWC in order from large to small, and were close to or larger than the controls after rehydration, indicating the compensation effect of rewatering after drought. The DMPRs, RSR AND HI are the important parameters in agricultural production, and are often used as the constants, but in fact they vary with plant growth. In addition, the interannual differences in ear and stalk DMPRs in response to drought were probably caused by the difference in degree and occurrence stage of drought, further reflecting the variation in response of allometry growth among organs to the environment. Besides, the persistence of drought impact was related to the occurrence stage and degree of drought, which is also associated with the duration during rewatering to maturity. Notably, the effect of drought on DMW was inconsistent with that on DMPR for each organ meaning that the two variables should be discussed separately. The QC did not affect total DMW but increased RSR, changed and intensified the effect and aftereffect of RPWC on DMP, respectively, indicating that the DMP pattern and its response to drought occur change under the condition of QC.
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Affiliation(s)
- Fu Cai
- Institute of Atmospheric Environment, China Meteorological Administration, Shenyang, China
- Key Laboratory of Agrometeorological Disasters, Liaoning, Shenyang, China
| | - Na Mi
- Institute of Atmospheric Environment, China Meteorological Administration, Shenyang, China
- Key Laboratory of Agrometeorological Disasters, Liaoning, Shenyang, China
| | - Huiqing Ming
- Liaoning Province Meteorological Service Center, Shenyang, China
| | - Yushu Zhang
- Institute of Atmospheric Environment, China Meteorological Administration, Shenyang, China
- Key Laboratory of Agrometeorological Disasters, Liaoning, Shenyang, China
| | - Hui Zhang
- Jinzhou Ecology and Agriculture Meteorological Center, Jinzhou, China
| | - Shujie Zhang
- Institute of Atmospheric Environment, China Meteorological Administration, Shenyang, China
- Key Laboratory of Agrometeorological Disasters, Liaoning, Shenyang, China
| | - Xianli Zhao
- Institute of Atmospheric Environment, China Meteorological Administration, Shenyang, China
| | - Bingbing Zhang
- Jinzhou Ecology and Agriculture Meteorological Center, Jinzhou, China
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Wu Y, Yao F, Wang Y, Ma L, Li X. Association of maize ( Zea mays L.) senescence with water and nitrogen utilization under different drip irrigation systems. FRONTIERS IN PLANT SCIENCE 2023; 14:1133206. [PMID: 37008479 PMCID: PMC10064151 DOI: 10.3389/fpls.2023.1133206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Accepted: 02/28/2023] [Indexed: 06/19/2023]
Abstract
INTRODUCTION Drip irrigation is an efficient water-saving system used to improve crop production worldwide. However, we still lack a comprehensive understanding of maize plant senescence and its association with yield, soil water, and nitrogen (N) utilization under this system. METHODS A 3-year field experiment in the northeast plains of China was used to assess four drip irrigation systems: (1) drip irrigation under plastic film mulch (PI); (2) drip irrigation under biodegradable film mulch (BI); (3) drip irrigation incorporating straw returning (SI); and (4) drip irrigation with the tape buried at a shallow soil depth (OI), and furrow irrigation (FI) was used as the control. The plant senescence characteristic based on the dynamic process of green leaf area (GLA) and live root length density (LRLD) during the reproductive stage, and its correlation with leaf N components, water use efficiency (WUE), and N use efficiency (NUE) was investigated. RESULTS PI followed by BI achieved the highest integral GLA and LRLD, grain filling rate, and leaf and root senescence rate after silking. Greater yield, WUE, and NUE were positively associated with higher N translocation efficiency of leaf protein responding for photosynthesis, respiration, and structure under PI and BI; whereas, no significant differences were found in yield, WUE, and NUE between PI and BI. SI effectively promoted LRLD in the deeper 20- to 100-cm soil layers, prolonged the GLA and LRLD persistent durations, and reduced the leaf and root senescence rates. The remobilization of non-protein storage N was stimulated by SI, FI, and OI, which made up for the relative inadequacy of leaf N. DISCUSSION Instead of persistent GLA and LRLD durations and high translocation efficiency of non-protein storage N, fast and large protein N translocation from leaves to grains under PI and BI was found to facilitate maize yield, WUE, and NUE in the sole cropping semi-arid region, and BI was recommend considering that it can reduce plastic pollution.
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Affiliation(s)
- Yang Wu
- Institute of Jiangxi Oil-tea Camellia, Jiujiang University, Jiujiang, China
| | - Fanyun Yao
- Institute of Agricultural Resource and Environment, Jilin Academy of Agricultural Sciences, Changchun, China
| | - Yongjun Wang
- Institute of Agricultural Resource and Environment, Jilin Academy of Agricultural Sciences, Changchun, China
| | - Lin Ma
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xiangnan Li
- Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, China
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Wang S, Ren Y, Han L, Nie Y, Zhang S, Xie X, Hu W, Chen H, Tang M. Insights on the Impact of Arbuscular Mycorrhizal Symbiosis on Eucalyptus grandis Tolerance to Drought Stress. Microbiol Spectr 2023; 11:e0438122. [PMID: 36927000 PMCID: PMC10100883 DOI: 10.1128/spectrum.04381-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 02/23/2023] [Indexed: 03/17/2023] Open
Abstract
Drought stress has a negative impact on plant growth and production. Arbuscular mycorrhizal (AM) fungi, which establish symbioses with most terrestrial vascular plant species, play important roles in improving host plant mineral nutrient acquisition and resistance to drought. However, the physiological and molecular regulation mechanisms occurring in mycorrhizal Eucalyptus grandis coping with drought stress remain unclear. Here, we studied the physiological changes and mitogen-activated protein kinase (MAPK) cascade gene expression profiles of E. grandis associated with AM fungi under drought stress. The results showed that colonization by AM fungi significantly enhanced plant growth, with higher plant biomass, shoot height, root length, and relative water content (RWC) under drought conditions. Mycorrhizal plants had lower levels of accumulation of proline, malondialdehyde (MDA), H2O2, and O2·- than seedlings not colonized with AM fungi. In addition, mycorrhizal E. grandis also had higher peroxidase (POD), superoxide dismutase (SOD), and catalase (CAT) activities under drought conditions, improving the antioxidant system response. Eighteen MAPK cascade genes were isolated from E. grandis, and the expression levels of the MAPK cascade genes were positively induced by symbiosis with AM fungi, which was correlated with changes in the proline, MDA, H2O2, and O2·- contents and POD, SOD, and CAT activities. In summary, our results showed that AM symbiosis enhances E. grandis drought tolerance by regulating plant antioxidation abilities and MAPK cascade gene expression. IMPORTANCE Arbuscular mycorrhizal (AM) fungi play an important role in improving plant growth and development under drought stress. The MAPK cascade may regulate many physiological and biochemical processes in plants in response to drought stress. Previous studies have shown that there is a complex regulatory network between the plant MAPK cascade and drought stress. However, the relationship between the E. grandis MAPK cascade and AM symbiosis in coping with drought remains to be investigated. Our results suggest that AM fungi could improve plant drought tolerance mainly by improving the antioxidant ability to protect plants from reactive oxygen species (ROS) and alleviate oxidative stress damage. The expression of the MAPK cascade genes was induced in mycorrhizal E. grandis seedlings under drought stress. This study revealed that MAPK cascade regulation is of special significance for improving the drought tolerance of E. grandis. This study provides a reference for improving mycorrhizal seedling cultivation under stress.
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Affiliation(s)
- Sijia Wang
- State Key Laboratory of Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Ying Ren
- State Key Laboratory of Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Lina Han
- State Key Laboratory of Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Yuying Nie
- State Key Laboratory of Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Shuyuan Zhang
- State Key Laboratory of Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Xianan Xie
- State Key Laboratory of Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Wentao Hu
- State Key Laboratory of Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Hui Chen
- State Key Laboratory of Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Ming Tang
- State Key Laboratory of Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
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Raza A, Mubarik MS, Sharif R, Habib M, Jabeen W, Zhang C, Chen H, Chen ZH, Siddique KHM, Zhuang W, Varshney RK. Developing drought-smart, ready-to-grow future crops. THE PLANT GENOME 2023; 16:e20279. [PMID: 36366733 DOI: 10.1002/tpg2.20279] [Citation(s) in RCA: 35] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 08/02/2022] [Indexed: 05/10/2023]
Abstract
Breeding crop plants with increased yield potential and improved tolerance to stressful environments is critical for global food security. Drought stress (DS) adversely affects agricultural productivity worldwide and is expected to rise in the coming years. Therefore, it is vital to understand the physiological, biochemical, molecular, and ecological mechanisms associated with DS. This review examines recent advances in plant responses to DS to expand our understanding of DS-associated mechanisms. Suboptimal water sources adversely affect crop growth and yields through physical impairments, physiological disturbances, biochemical modifications, and molecular adjustments. To control the devastating effect of DS in crop plants, it is important to understand its consequences, mechanisms, and the agronomic and genetic basis of DS for sustainable production. In addition to plant responses, we highlight several mitigation options such as omics approaches, transgenics breeding, genome editing, and biochemical to mechanical methods (foliar treatments, seed priming, and conventional agronomic practices). Further, we have also presented the scope of conventional and speed breeding platforms in helping to develop the drought-smart future crops. In short, we recommend incorporating several approaches, such as multi-omics, genome editing, speed breeding, and traditional mechanical strategies, to develop drought-smart cultivars to achieve the 'zero hunger' goal.
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Affiliation(s)
- Ali Raza
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Oil Crops Research Institute, Center of Legume Crop Genetics and Systems Biology/College of Agriculture, Fujian Agriculture and Forestry Univ., Fuzhou, 350002, China
| | | | - Rahat Sharif
- Dep. of Horticulture, College of Horticulture and Plant Protection, Yangzhou Univ., Yangzhou, Jiangsu, 225009, China
| | - Madiha Habib
- National Institute for Genomics and Advanced Biotechnology, National Agricultural Research Centre, Park Rd., Islamabad, 45500, Pakistan
| | - Warda Jabeen
- Institute of Environmental Sciences and Engineering, School of Civil and Environmental Engineering, National Univ. of Sciences and Technology, Islamabad, 44000, Pakistan
| | - Chong Zhang
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Oil Crops Research Institute, Center of Legume Crop Genetics and Systems Biology/College of Agriculture, Fujian Agriculture and Forestry Univ., Fuzhou, 350002, China
| | - Hua Chen
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Oil Crops Research Institute, Center of Legume Crop Genetics and Systems Biology/College of Agriculture, Fujian Agriculture and Forestry Univ., Fuzhou, 350002, China
| | - Zhong-Hua Chen
- School of Science, Hawkesbury Institute for the Environment, Western Sydney Univ., Penrith, NSW, 2751, Australia
| | - Kadambot H M Siddique
- The UWA Institute of Agriculture, The Univ. of Western Australia, Crawley, Perth, 6009, Australia
| | - Weijian Zhuang
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Oil Crops Research Institute, Center of Legume Crop Genetics and Systems Biology/College of Agriculture, Fujian Agriculture and Forestry Univ., Fuzhou, 350002, China
| | - Rajeev K Varshney
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Oil Crops Research Institute, Center of Legume Crop Genetics and Systems Biology/College of Agriculture, Fujian Agriculture and Forestry Univ., Fuzhou, 350002, China
- State Agricultural Biotechnology Centre, Centre for Crop and Food Innovation, Murdoch Univ., Murdoch, WA, 6150, Australia
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Fernie AR. On the role of transposons in balancing drought tolerance and yield. TRENDS IN PLANT SCIENCE 2023; 28:262-263. [PMID: 36526510 DOI: 10.1016/j.tplants.2022.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 12/06/2022] [Accepted: 12/07/2022] [Indexed: 06/17/2023]
Abstract
Since their discovery in the 1950s it has been speculated that transposable elements play a role in stabilizing the expression of cardinal genes. Recently, Sun et al. demonstrated that a transposable element-mediated inverted repeats-derived small RNA- and gene-regulatory network is a key player underlying the trade-off between drought tolerance and yield.
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Affiliation(s)
- Alisdair R Fernie
- Max-Planck-Institute of Molecular Plant Physiology, 14476 Potsdam-Golm, Germany.
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44
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Guo J, Qu L, Wang L, Lu W, Lu D. Effects of post-silking drought stress degree on grain yield and quality of waxy maize. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:1530-1540. [PMID: 36194545 DOI: 10.1002/jsfa.12250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 09/26/2022] [Accepted: 10/04/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Drought stress (DS) induced by post-silking have a major impact on the yield and quality of maize. In this study, the effects of different degrees of DS after pollination on grain filling, starch and protein metabolism, and functional properties were investigated using two waxy maize cultivars as materials. The levels of DS that were investigated were 'mild water stress' (WS1), 'moderate water stressed' (WS2), and 'severe waterstressed' (WS3). RESULTS Drought stress decreased grain fresh weight, dry weight, and moisture content in both cultivars during grain filling, and reduced kernel number, kernel weight, and grain yield at maturity. The effect on grain development and yield formation gradually increased with drought aggravation. The water stress (WS) treatment downregulated the enzymatic activities related to starch biosynthesis during grain-filling process, accompanied by a decrease in soluble sugar and starch deposition. The WS treatment increased the enzymatic activities involved in protein synthesis during grain-filling process, thereby increasing the protein content of grains. On average, WS2 and WS3 treatments reduced the pasting viscosities and increased the gelatinization temperatures of grains, with WS3 having the greatest effect. However, the changes of setback viscosity, gelatinization enthalpy, retrogradation enthalpy, and retrogradation percentage under WS treatment were inconsistent in both cultivars. Pearson correlation analysis showed that starch content was negatively correlated with gelatinization temperatures and positively correlated with pasting viscosities in both cultivars. However, grain pasting and gelatinization properties have opposite correlations with protein content and starch content. CONCLUSIONS These findings suggest that post-silking DS regulated the grain-filling process and starch and protein biosynthesis, which influenced grain yield and quality. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Jian Guo
- Jiangsu Key Laboratory of Crop Genetics and Physiology|Jiangsu Key Laboratory of Crop Cultivation and Physiology, Yangzhou University, Yangzhou, 225009, P.R. China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Agricultural College of Yangzhou University, Yangzhou, 225009, P.R. China
| | - Lingling Qu
- Jiangsu Key Laboratory of Crop Genetics and Physiology|Jiangsu Key Laboratory of Crop Cultivation and Physiology, Yangzhou University, Yangzhou, 225009, P.R. China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Agricultural College of Yangzhou University, Yangzhou, 225009, P.R. China
| | - Longfei Wang
- Jiangsu Key Laboratory of Crop Genetics and Physiology|Jiangsu Key Laboratory of Crop Cultivation and Physiology, Yangzhou University, Yangzhou, 225009, P.R. China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Agricultural College of Yangzhou University, Yangzhou, 225009, P.R. China
| | - Weiping Lu
- Jiangsu Key Laboratory of Crop Genetics and Physiology|Jiangsu Key Laboratory of Crop Cultivation and Physiology, Yangzhou University, Yangzhou, 225009, P.R. China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Agricultural College of Yangzhou University, Yangzhou, 225009, P.R. China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education, Yangzhou University, Yangzhou, 225009, P.R. China
| | - Dalei Lu
- Jiangsu Key Laboratory of Crop Genetics and Physiology|Jiangsu Key Laboratory of Crop Cultivation and Physiology, Yangzhou University, Yangzhou, 225009, P.R. China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Agricultural College of Yangzhou University, Yangzhou, 225009, P.R. China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education, Yangzhou University, Yangzhou, 225009, P.R. China
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Yang Z, Qin F. The battle of crops against drought: Genetic dissection and improvement. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2023; 65:496-525. [PMID: 36639908 DOI: 10.1111/jipb.13451] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Accepted: 01/12/2023] [Indexed: 06/17/2023]
Abstract
With ongoing global climate change, water scarcity-induced drought stress remains a major threat to agricultural productivity. Plants undergo a series of physiological and morphological changes to cope with drought stress, including stomatal closure to reduce transpiration and changes in root architecture to optimize water uptake. Combined phenotypic and multi-omics studies have recently identified a number of drought-related genetic resources in different crop species. The functional dissection of these genes using molecular techniques has enriched our understanding of drought responses in crops and has provided genetic targets for enhancing resistance to drought. Here, we review recent advances in the cloning and functional analysis of drought resistance genes and the development of technologies to mitigate the threat of drought to crop production.
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Affiliation(s)
- Zhirui Yang
- State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Feng Qin
- State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
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Guo T, Li X. Machine learning for predicting phenotype from genotype and environment. Curr Opin Biotechnol 2023; 79:102853. [PMID: 36463837 DOI: 10.1016/j.copbio.2022.102853] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/01/2022] [Accepted: 11/07/2022] [Indexed: 12/03/2022]
Abstract
Predicting phenotype with genomic and environmental information is critically needed and challenging. Machine learning methods have emerged as powerful tools to make accurate predictions from large and complex biological data. Here, we review the progress of phenotype prediction models enabled or improved by machine learning methods. We categorized the applications into three scenarios: prediction with genotypic information, with environmental information, and with both. In each scenario, we illustrate the practicality of prediction models, the advantages of machine learning, and the challenges of modeling complex relationships. We discuss the promising potential of leveraging machine learning and genetics theories to develop models that can predict phenotype and also interpret the biological consequences of changes in genotype and environment.
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Affiliation(s)
- Tingting Guo
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Hubei Hongshan Laboratory, Wuhan 430070, China.
| | - Xianran Li
- USDA, Agricultural Research Service, Wheat Health, Genetics, and Quality Research Unit, Pullman, WA 99164, USA; Department of Crop and Soil Sciences, Washington State University, Pullman, WA 99164, USA.
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Cooper M, Messina CD. Breeding crops for drought-affected environments and improved climate resilience. THE PLANT CELL 2023; 35:162-186. [PMID: 36370076 PMCID: PMC9806606 DOI: 10.1093/plcell/koac321] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 11/01/2022] [Indexed: 05/12/2023]
Abstract
Breeding climate-resilient crops with improved levels of abiotic and biotic stress resistance as a response to climate change presents both opportunities and challenges. Applying the framework of the "breeder's equation," which is used to predict the response to selection for a breeding program cycle, we review methodologies and strategies that have been used to successfully breed crops with improved levels of drought resistance, where the target population of environments (TPEs) is a spatially and temporally heterogeneous mixture of drought-affected and favorable (water-sufficient) environments. Long-term improvement of temperate maize for the US corn belt is used as a case study and compared with progress for other crops and geographies. Integration of trait information across scales, from genomes to ecosystems, is needed to accurately predict yield outcomes for genotypes within the current and future TPEs. This will require transdisciplinary teams to explore, identify, and exploit novel opportunities to accelerate breeding program outcomes; both improved germplasm resources and improved products (cultivars, hybrids, clones, and populations) that outperform and replace the products in use by farmers, in combination with modified agronomic management strategies suited to their local environments.
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Affiliation(s)
| | - Carlos D Messina
- Horticultural Sciences Department, University of Florida, Gainesville, Florida 32611, USA
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Gautam A, Khan FN, Priya S, Kumar K, Sharda S, Kaul T, Singh I, Langyan S, Yadava P. Cloning and comparative modeling identifies a highly stress tolerant Cu/Zn cytosolic super oxide dismutase 2 from a drought tolerant maize inbred line. PeerJ 2023; 11:e14845. [PMID: 36935928 PMCID: PMC10019340 DOI: 10.7717/peerj.14845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 01/11/2023] [Indexed: 03/14/2023] Open
Abstract
Plants have a complex system of stress response that deals with different types of stresses. Maize (Zea mays L.), one of the most important crops grown throughout the world, across a range of agro-ecological environments, employs complex mechanisms of gene regulation in response to drought stress. HKI 335 is a tropical maize inbred line showing remarkable adaptation to drought stress. Abiotic stresses, like drought, trigger the production of reactive oxygen species (ROS) due to the incomplete reduction or excitation of molecular oxygen, eventually leading to cell damage. Superoxide dismutase (SOD, EC 1.15.1.1) is a metalloenzyme that acts as the first line of defense against ROS. We cloned the Sod2 gene from HKI 335 inbred line and analyzed its protein through detailed in silico characterization. Our comparative modeling revealed that at the level of tertiary structure, the HKI 335 SOD2 protein is highly similar to Potentilla atrosanguinea SOD2, which had been previously identified as highly thermostable SOD that can tolerate autoclaving as well as sub-zero temperatures. We performed phylogenetic analysis, estimated physicochemical properties, post-translational modifications, protein-protein interactions, and domain composition of this SOD2. The phylogenetic analysis showed that orthologous sequences of SOD from different species were clustered into two clusters. Secondary structure prediction indicates that SOD2 is a soluble protein and no transmembrane domains have been found. Most of the beta sheets have RSA value greater than 2. The Ramachandran plot from PDBsum revealed that most of the residues fall in the highly favored region. It was estimated that the value of the instability index was less than 40, the value of the aliphatic index was extremely high and the GRAVY value lies between -2 and +2. We could identify only one phosphorylation site, located at position 20 with a score of 0.692. Overall, the unique stress-tolerant properties of the HKI 335 SOD2, may be one of the reasons contributing to the high drought tolerance trait exhibited by HKI 335 maize inbred line. Further research may reveal more insights into the drought adaptation mechanism in maize and the eventual deployment of the trait in maize hybrids.
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Affiliation(s)
- Anuradha Gautam
- ICAR-Indian Institute of Maize Research, Pusa Campus, New Delhi, India
| | - Fatima Nazish Khan
- Division of Plant Physiology, Indian Agricultural Research Institute, Pusa, New Delhi, India
- Department of Biotechnology, Jamia Millia Islamia, Jamia Nagar, New Delhi, India
| | - Surabhi Priya
- ICAR-Indian Institute of Maize Research, Pusa Campus, New Delhi, India
| | - Krishan Kumar
- ICAR-Indian Institute of Maize Research, Pusa Campus, New Delhi, India
| | - Shivani Sharda
- Amity Institute of Biotechnology, Amity University, Noida, India
| | - Tanushri Kaul
- International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi, India
| | - Ishwar Singh
- ICAR-Indian Institute of Maize Research, Pusa Campus, New Delhi, India
| | - Sapna Langyan
- Division of Germplasm Evaluation, ICAR-National Bureau of Plant Genetic Resources, Pusa Campus, New Delhi, India
| | - Pranjal Yadava
- ICAR-Indian Institute of Maize Research, Pusa Campus, New Delhi, India
- Division of Plant Physiology, Indian Agricultural Research Institute, Pusa, New Delhi, India
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49
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Sun X, Xiang Y, Dou N, Zhang H, Pei S, Franco AV, Menon M, Monier B, Ferebee T, Liu T, Liu S, Gao Y, Wang J, Terzaghi W, Yan J, Hearne S, Li L, Li F, Dai M. The role of transposon inverted repeats in balancing drought tolerance and yield-related traits in maize. Nat Biotechnol 2023; 41:120-127. [PMID: 36229611 DOI: 10.1038/s41587-022-01470-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 07/02/2022] [Indexed: 01/21/2023]
Abstract
The genomic basis underlying the selection for environmental adaptation and yield-related traits in maize remains poorly understood. Here we carried out genome-wide profiling of the small RNA (sRNA) transcriptome (sRNAome) and transcriptome landscapes of a global maize diversity panel under dry and wet conditions and uncover dozens of environment-specific regulatory hotspots. Transgenic and molecular studies of Drought-Related Environment-specific Super eQTL Hotspot on chromosome 8 (DRESH8) and ZmMYBR38, a target of DRESH8-derived small interfering RNAs, revealed a transposable element-mediated inverted repeats (TE-IR)-derived sRNA- and gene-regulatory network that balances plant drought tolerance with yield-related traits. A genome-wide scan revealed that TE-IRs associate with drought response and yield-related traits that were positively selected and expanded during maize domestication. These results indicate that TE-IR-mediated posttranscriptional regulation is a key molecular mechanism underlying the tradeoff between crop environmental adaptation and yield-related traits, providing potential genomic targets for the breeding of crops with greater stress tolerance but uncompromised yield.
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Affiliation(s)
- Xiaopeng Sun
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
- Hubei Hongshan Laboratory, Wuhan, China
| | - Yanli Xiang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
| | - Nannan Dou
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
- Hubei Hongshan Laboratory, Wuhan, China
| | - Hui Zhang
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), Huazhong Agricultural University, Wuhan, China
| | - Surui Pei
- Annoroad Gene Tech (Beijing) Co., Ltd, Beijing, China
| | - Arcadio Valdes Franco
- School of Integrative Plant Sciences, Section of Plant Breeding and Genetics, Cornell University, Ithaca, NY, USA
| | - Mitra Menon
- Department of Evolution and Ecology, Center for Population Biology, and Genome Center, University of California, Davis, Davis, CA, USA
| | - Brandon Monier
- School of Integrative Plant Sciences, Section of Plant Breeding and Genetics, Cornell University, Ithaca, NY, USA
| | - Taylor Ferebee
- School of Integrative Plant Sciences, Section of Plant Breeding and Genetics, Cornell University, Ithaca, NY, USA
| | - Tao Liu
- Annoroad Gene Tech (Beijing) Co., Ltd, Beijing, China
| | - Sanyang Liu
- Annoroad Gene Tech (Beijing) Co., Ltd, Beijing, China
| | - Yuchi Gao
- Annoroad Gene Tech (Beijing) Co., Ltd, Beijing, China
| | - Jubin Wang
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), Huazhong Agricultural University, Wuhan, China
| | | | - Jianbing Yan
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
- Hubei Hongshan Laboratory, Wuhan, China
| | - Sarah Hearne
- CIMMYT, KM 45 Carretera Mexico-Veracruz, El Batan, Texcoco, Mexico
| | - Lin Li
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China.
- Hubei Hongshan Laboratory, Wuhan, China.
| | - Feng Li
- Hubei Hongshan Laboratory, Wuhan, China.
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), Huazhong Agricultural University, Wuhan, China.
| | - Mingqiu Dai
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China.
- Hubei Hongshan Laboratory, Wuhan, China.
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50
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Kolo Z, Majola A, Phillips K, Ali AEE, Sharp RE, Ludidi N. Water Deficit-Induced Changes in Phenolic Acid Content in Maize Leaves Is Associated with Altered Expression of Cinnamate 4-Hydroxylase and p-Coumaric Acid 3-Hydroxylase. PLANTS (BASEL, SWITZERLAND) 2022; 12:101. [PMID: 36616230 PMCID: PMC9823676 DOI: 10.3390/plants12010101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 12/21/2022] [Accepted: 12/22/2022] [Indexed: 06/17/2023]
Abstract
The amino acid phenylalanine is a precursor to phenolic acids that constitute the lignin biosynthetic pathway. Although there is evidence of a role of some phenolic acids in plant responses to pathogens and salinity, characterization of the involvement of phenolic acids in plant responses to drought is limited. Drought reduces water content in plant tissue and can lead to decreased cell viability and increased cell death. We thus subjected maize seedlings to water deficit and evaluated relative water content and cell viability together with p-coumaric acid, caffeic acid and ferulic acid contents in the leaves. Furthermore, we measured the enzymatic activity of cinnamate 4-hydroxylase (EC 1.14.13.11) and p-coumarate 3-hydroxylase (EC 1.14.17.2) and associated these with the expression of genes encoding cinnamate 4-hydroxylase and p-coumarate-3 hydroxylase in response to water deficit. Water deficit reduced relative water content and cell viability in maize leaves. This corresponded with decreased p-coumaric acid but increased caffeic and ferulic acid content in the leaves. Changes in the phenolic acid content of the maize leaves were associated with increased enzymatic activities of cinnamate 4-hydroxylase and p-coumarate hydroxylase. The increased enzymatic activity of p-coumarate 3-hydroxylase was associated with increased expression of a gene encoding p-coumarate 3-hydroxylase. We thus conclude that metabolic pathways involving phenolic acids may contribute to the regulation of drought responses in maize, and we propose that further work to elucidate this regulation may contribute to the development of new maize varieties with improved drought tolerance. This can be achieved by marker-assisted selection to select maize lines with high levels of expression of genes encoding cinnamate 4-hydroxylase and/or p-coumarate 3-hydroxylase for use in breeding programs aimed and improving drought tolerance, or by overexpression of these genes via genetic engineering to confer drought tolerance.
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Affiliation(s)
- Zintle Kolo
- Department of Biotechnology, University of the Western Cape, Robert Sobukwe Road, Bellville 7530, South Africa
| | - Anelisa Majola
- Department of Biotechnology, University of the Western Cape, Robert Sobukwe Road, Bellville 7530, South Africa
| | - Kyle Phillips
- Department of Biotechnology, University of the Western Cape, Robert Sobukwe Road, Bellville 7530, South Africa
| | - Ali Elnaeim Elbasheir Ali
- Department of Biotechnology, University of the Western Cape, Robert Sobukwe Road, Bellville 7530, South Africa
| | - Robert E. Sharp
- 2-8 Agriculture Building, Interdisciplinary Plant Group, Division of Plant Science and Technology, University of Missouri, Columbia, MO 65211, USA
| | - Ndiko Ludidi
- Department of Biotechnology, University of the Western Cape, Robert Sobukwe Road, Bellville 7530, South Africa
- DSI-NRF Centre of Excellence in Food Security, University of the Western Cape, Robert Sobukwe Road, Bellville 7530, South Africa
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