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Zai X, Cordovez V, Zhu F, Zhao M, Diao X, Zhang F, Raaijmakers JM, Song C. C4 cereal and biofuel crop microbiomes. Trends Microbiol 2024:S0966-842X(24)00093-3. [PMID: 38772810 DOI: 10.1016/j.tim.2024.04.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 04/18/2024] [Accepted: 04/19/2024] [Indexed: 05/23/2024]
Abstract
Microbiomes provide multiple life-support functions for plants, including nutrient acquisition and tolerance to abiotic and biotic stresses. Considering the importance of C4 cereal and biofuel crops for food security under climate change conditions, more attention has been given recently to C4 plant microbiome assembly and functions. Here, we review the current status of C4 cereal and biofuel crop microbiome research with a focus on beneficial microbial traits for crop growth and health. We highlight the importance of environmental factors and plant genetics in C4 crop microbiome assembly and pinpoint current knowledge gaps. Finally, we discuss the potential of foxtail millet as a C4 model species and outline future perspectives of C4 plant microbiome research.
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Affiliation(s)
- Xiaoyu Zai
- State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, China Agricultural University, Beijing, China; National Academy of Agriculture Green Development, China Agricultural University, Beijing, China; Key Laboratory of Plant-Soil Interactions, Ministry of Education, China Agricultural University, 100193 Beijing, China; National Observation and Research Station of Agriculture Green Development, 057250 Quzhou, Hebei, China
| | - Viviane Cordovez
- Department of Microbial Ecology, Netherlands Institute of Ecology, Wageningen, The Netherlands.
| | - Feng Zhu
- Key Laboratory of Agricultural Water Resources, Hebei Laboratory of Agricultural Water-Saving, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, 050021 Shijiazhuang, China
| | - Meicheng Zhao
- Key Laboratory of Agricultural Water Resources, Hebei Laboratory of Agricultural Water-Saving, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, 050021 Shijiazhuang, China; Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, 100081 Beijing, China
| | - Xianmin Diao
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, 100081 Beijing, China
| | - Fusuo Zhang
- State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, China Agricultural University, Beijing, China; National Academy of Agriculture Green Development, China Agricultural University, Beijing, China; Key Laboratory of Plant-Soil Interactions, Ministry of Education, China Agricultural University, 100193 Beijing, China; National Observation and Research Station of Agriculture Green Development, 057250 Quzhou, Hebei, China
| | - Jos M Raaijmakers
- Department of Microbial Ecology, Netherlands Institute of Ecology, Wageningen, The Netherlands; Institute of Biology, Leiden University, Leiden, The Netherlands
| | - Chunxu Song
- State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, China Agricultural University, Beijing, China; National Academy of Agriculture Green Development, China Agricultural University, Beijing, China; Key Laboratory of Plant-Soil Interactions, Ministry of Education, China Agricultural University, 100193 Beijing, China; National Observation and Research Station of Agriculture Green Development, 057250 Quzhou, Hebei, China.
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2
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Gios E, Verbruggen E, Audet J, Burns R, Butterbach-Bahl K, Espenberg M, Fritz C, Glatzel S, Jurasinski G, Larmola T, Mander Ü, Nielsen C, Rodriguez AF, Scheer C, Zak D, Silvennoinen HM. Unraveling microbial processes involved in carbon and nitrogen cycling and greenhouse gas emissions in rewetted peatlands by molecular biology. BIOGEOCHEMISTRY 2024; 167:609-629. [PMID: 38707517 PMCID: PMC11068585 DOI: 10.1007/s10533-024-01122-6] [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: 05/31/2023] [Accepted: 01/22/2024] [Indexed: 05/07/2024]
Abstract
Restoration of drained peatlands through rewetting has recently emerged as a prevailing strategy to mitigate excessive greenhouse gas emissions and re-establish the vital carbon sequestration capacity of peatlands. Rewetting can help to restore vegetation communities and biodiversity, while still allowing for extensive agricultural management such as paludiculture. Belowground processes governing carbon fluxes and greenhouse gas dynamics are mediated by a complex network of microbial communities and processes. Our understanding of this complexity and its multi-factorial controls in rewetted peatlands is limited. Here, we summarize the research regarding the role of soil microbial communities and functions in driving carbon and nutrient cycling in rewetted peatlands including the use of molecular biology techniques in understanding biogeochemical processes linked to greenhouse gas fluxes. We emphasize that rapidly advancing molecular biology approaches, such as high-throughput sequencing, are powerful tools helping to elucidate the dynamics of key biogeochemical processes when combined with isotope tracing and greenhouse gas measuring techniques. Insights gained from the gathered studies can help inform efficient monitoring practices for rewetted peatlands and the development of climate-smart restoration and management strategies. Supplementary Information The online version contains supplementary material available at 10.1007/s10533-024-01122-6.
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Affiliation(s)
- Emilie Gios
- NINA, Norwegian Institute for Nature Research, PO Box 5685, Torgarden, NO-7485 Trondheim, Norway
| | - Erik Verbruggen
- Plants and Ecosystems Research Group, Department of Biology, University of Antwerp, Universiteitsplein 1, Wilrijk, 2610 Antwerp, Belgium
| | - Joachim Audet
- Department of Ecoscience, Aarhus University, C.F. Møllers Allé, 8000 Aarhus, Denmark
| | - Rachel Burns
- Department of Geosciences and Natural Resource Management, University of Copenhagen, 1350 Copenhagen, Denmark
| | - Klaus Butterbach-Bahl
- Institute of Meteorology and Climate Research, Atmospheric Environmental Research, Karlsruhe Institute of Technology, 82467 Garmisch-Partenkirchen, Germany
- Department of Agroecology, Pioneer Center for Research in Sustainable Agricultural Futures (Land-CRAFT), Aarhus University, 8000 Aarhus, Denmark
| | - Mikk Espenberg
- Department of Geography, Institute of Ecology and Earth Sciences, University of Tartu, 46 St., Vanemuise, 51003 Tartu, Estonia
| | - Christian Fritz
- Aquatic Ecology and Environmental Biology, Radboud Institute for Biological and Environmental Sciences (RIBES), Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Stephan Glatzel
- Department of Geography and Regional Research, University of Vienna, Althanstraße 14, 1090 Vienna, Austria
| | - Gerald Jurasinski
- Faculty of Agriculture and Environment, Landscape Ecology and Site Evaluation, University of Rostock, Justus-von-Liebig-Weg 6, 18059 Rostock, Germany
- Department of Maritime Systems, Faculty of Interdisciplinary Research, University of Rostock, Albert- Einstein-Straße 3, 18059 Rostock, Germany
| | - Tuula Larmola
- Natural Resources Institute Finland (Luke), 00790 Helsinki, Finland
| | - Ülo Mander
- Department of Geography, Institute of Ecology and Earth Sciences, University of Tartu, 46 St., Vanemuise, 51003 Tartu, Estonia
| | - Claudia Nielsen
- Department of Agroecology, Faculty of Technical Sciences, Aarhus University, Blichers Alle 20, 8830 Tjele, Denmark
- CBIO, Centre for Circular Bioeconomy, Aarhus University, 8830 Tjele, Denmark
| | - Andres F. Rodriguez
- Department of Agroecology, Faculty of Technical Sciences, Aarhus University, Blichers Alle 20, 8830 Tjele, Denmark
| | - Clemens Scheer
- Institute of Meteorology and Climate Research, Atmospheric Environmental Research, Karlsruhe Institute of Technology, 82467 Garmisch-Partenkirchen, Germany
| | - Dominik Zak
- Department of Ecoscience, Aarhus University, C.F. Møllers Allé, 8000 Aarhus, Denmark
- Department of Ecohydrology and Biogeochemistry, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 301, 12587 Berlin, Germany
| | - Hanna M. Silvennoinen
- NINA, Norwegian Institute for Nature Research, PO Box 5685, Torgarden, NO-7485 Trondheim, Norway
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Chen G, Yang A, Wang J, Ke L, Chen S, Li W. Effects of the synergistic treatments of arbuscular mycorrhizal fungi and trehalose on adaptability to salt stress in tomato seedlings. Microbiol Spectr 2024; 12:e0340423. [PMID: 38259091 PMCID: PMC10913750 DOI: 10.1128/spectrum.03404-23] [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: 09/19/2023] [Accepted: 12/05/2023] [Indexed: 01/24/2024] Open
Abstract
Arbuscular mycorrhizal fungi (AMF) could establish symbiosis with plant roots, which enhances plant resistance to various stresses, including drought stress and salt stress. Besides AMF, chemical stimulants such as trehalose (Tre) can also play an important role in helping plants alleviate damage of adversity. However, the mechanism of the effect of AMF combined with chemicals on plant stress resistance is unclear. The objective of this study was to explore the synergistic effects of Claroideoglomus etunicatum AMF and exogenous Tre on the antioxidant system, osmoregulation, and resistance-protective substance in plants in response to salt stress. Tomato seedlings were inoculated with Claroideoglomus etunicatum and combined with exogenous Tre in a greenhouse aseptic soil cultivation experiment. We measured the arbuscular mycorrhizal symbiont development, organic matter content, and antioxidant enzyme activity in tomato seedlings. Both AMF and Tre improved the synthesis of chlorophyll content in tomato seedlings; regulated the osmotic substance including soluble sugars, soluble protein, and proline of plants; and increased the activity of superoxide dismutase, peroxidase, and catalase. The combination of AMF and Tre also reduced the accumulation of malondialdehyde and alleviated the damage of harmful substances to plant cells in tomato seedlings. We studied the effects of AMF combined with extraneous Tre on salt tolerance in tomato seedlings, and the results showed that the synergistic treatment of AMF and Tre was more efficient than the effects of AMF inoculation or Tre spraying separately by regulating host substance synthesis, osmosis, and antioxidant enzymes. Our results indicated that the synergistic effects of AMF and Tre increased the plant adaptability against salt damage by enhancing cell osmotic protection and cell antioxidant capacity. IMPORTANCE AMF improve the plant adaptability to salt resistance by increasing mineral absorption and reducing the damage of saline soil. Trehalose plays an important role in plant response to salt damage by regulating osmotic pressure. Together, the use of AMF and trehalose in tomato seedlings proved efficient in regulating host substance synthesis, osmosis, and antioxidant enzymes. These synergistic effects significantly improved seedling adaptability to salt stress by enhancing cell osmotic protection and cell antioxidant capacity, ultimately reducing losses to crops grown on land where salinization has occurred.
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Affiliation(s)
- Gongshan Chen
- Anhui Provincial Key Lab of the Conservation and Exploitation of Biological Resources, Anhui Normal University, Wuhu, China
| | - Anna Yang
- Anhui Provincial Key Lab of the Conservation and Exploitation of Biological Resources, Anhui Normal University, Wuhu, China
| | - Jianzhong Wang
- Anhui Provincial Key Lab of the Conservation and Exploitation of Biological Resources, Anhui Normal University, Wuhu, China
| | - Lixia Ke
- Anhui Provincial Key Lab of the Conservation and Exploitation of Biological Resources, Anhui Normal University, Wuhu, China
| | - Shaoxing Chen
- Anhui Provincial Key Lab of the Conservation and Exploitation of Biological Resources, Anhui Normal University, Wuhu, China
| | - Wentao Li
- Anhui Provincial Key Lab of the Conservation and Exploitation of Biological Resources, Anhui Normal University, Wuhu, China
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Huang P, Huang S, Ma Y, Danish S, Hareem M, Syed A, Elgorban AM, Eswaramoorthy R, Wong LS. Alleviation of salinity stress by EDTA chelated-biochar and arbuscular mycorrhizal fungi on maize via modulation of antioxidants activity and biochemical attributes. BMC PLANT BIOLOGY 2024; 24:63. [PMID: 38262953 PMCID: PMC10804780 DOI: 10.1186/s12870-024-04753-x] [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: 07/20/2023] [Accepted: 01/16/2024] [Indexed: 01/25/2024]
Abstract
Salinity stress adversely affects agricultural productivity by disrupting water uptake, causing nutrient imbalances, and leading to ion toxicity. Excessive salts in the soil hinder crops root growth and damage cellular functions, reducing photosynthetic capacity and inducing oxidative stress. Stomatal closure further limits carbon dioxide uptake that negatively impact plant growth. To ensure sustainable agriculture in salt-affected regions, it is essential to implement strategies like using biofertilizers (e.g. arbuscular mycorrhizae fungi = AMF) and activated carbon biochar. Both amendments can potentially mitigate the salinity stress by regulating antioxidants, gas exchange attributes and chlorophyll contents. The current study aims to explore the effect of EDTA-chelated biochar (ECB) with and without AMF on maize growth under salinity stress. Five levels of ECB (0, 0.2, 0.4, 0.6 and 0.8%) were applied, with and without AMF. Results showed that 0.8ECB + AMF caused significant enhancement in shoot length (~ 22%), shoot fresh weight (~ 15%), shoot dry weight (~ 51%), root length (~ 46%), root fresh weight (~ 26%), root dry weight (~ 27%) over the control (NoAMF + 0ECB). A significant enhancement in chlorophyll a, chlorophyll b and total chlorophyll content, photosynthetic rate, transpiration rate and stomatal conductance was also observed in the condition 0.8ECB + AMF relative to control (NoAMF + 0ECB), further supporting the efficacy of such a combined treatment. Our results suggest that adding 0.8% ECB in soil with AMF inoculation on maize seeds can enhance maize production in saline soils, possibly via improvement in antioxidant activity, chlorophyll contents, gas exchange and morphological attributes.
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Affiliation(s)
- Ping Huang
- College of Chemistry and Materials Engineering, Anhui Science and Technology University, Fengyang, Anhui, 233100, China
| | - Shoucheng Huang
- College of Life and Health Science, Anhui Science and Technology University, Fengyang, Chuzhou, Anhui, 233100, China.
| | - Yuhan Ma
- College of Life and Health Science, Anhui Science and Technology University, Fengyang, Chuzhou, Anhui, 233100, China
| | - Subhan Danish
- Department of Soil Science, Faculty of Agricultural Sciences and Technology, Bahauddin Zakariya University, Multan, Punjab, 60000, Pakistan.
| | - Misbah Hareem
- Department of Environmental Sciences, The Woman University Multan, Multan, Punjab, 60000, Pakistan.
| | - Asad Syed
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. 2455, Riyadh, 11451, Saudi Arabia
| | - Abdallah M Elgorban
- Center of Excellence in Biotechnology Research, King Saud University, Riyadh, Saudi Arabia
| | - Rajalakshmanan Eswaramoorthy
- Department of Biochemistry, Centre of Molecular Medicine and Diagnostics (COMMAND), Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, 600077, India
| | - Ling Shing Wong
- Faculty of Health and Life Sciences, INTI International University, Putra Nilai, Negeri Sembilan, Nilai, 71800, Malaysia
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Wilkes TI. The influence of a soil amendment on the abundance and interaction of arbuscular mycorrhizal fungi with arable soils and host winter wheat. Access Microbiol 2024; 6:000581.v5. [PMID: 38361647 PMCID: PMC10866040 DOI: 10.1099/acmi.0.000581.v5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 11/27/2023] [Indexed: 02/17/2024] Open
Abstract
Arbuscular mycorrhizal (AM) fungi have been shown to be associated with an estimated 70 % of vascular terrestrial plants. Such relationships have been shown to be sensitive to soil disturbance, for example, tillage in the preparation of a seed bed. From the application of arable soil management, AM fungal populations have been shown to be negatively impacted in abundance and diversity, reducing plant growth and development. The present study aims to utilise two sources (multipurpose compost and a commercial inocula) of mycorrhizal fungi for the amendment of arable soils supporting Zulu winter wheat under controlled conditions and quantify plant growth responses. A total of nine fields across three participating farms were sampled, each farm practicing either conventional, reduced, or zero tillage soil management exclusively. Soil textures were assessed for each sampled soil. Via the employment of AM fungal symbiosis quantification methods, AM fungi were compared between soil amendments and their effects on crop growth and development. The present study was able to quantify a mean 6 cm increase to crop height (P<0.001), 10 cm reduction to root length corresponding with a 2.45-fold increase in AM fungal arbuscular structures (P<0.001), a 1.15-fold increase in soil glomalin concentration corresponding to a 1.26-fold increase in soil carbon, and a 1.32-fold increase in the relative abundance of molecular identified AM fungal sequences for compost amended soils compared to control samples. Mycorrhizal inocula, however, saw no change to crop height or root length, AM fungal arbuscules were reduced by 1.43-fold, soil glomalin was additionally reduced by 1.55-fold corresponding to a reduction in soil carbon by 1.31-fold, and a reduction to relative AM fungal species abundance by 1.26-fold. The present study can conclude the addition of compost as an arable soil amendment is more beneficial for the restoration of AM fungi beneficial to wheat production and soil carbon compared to the addition of a commercial mycorrhizal inocula.
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Affiliation(s)
- Thomas I. Wilkes
- Department of Clinical, Pharmaceutical and Biological Science, School of Life and Medical Sciences, College Lane Campus, University of Hertfordshire, Hatfield, Hertfordshire AL10 9AB, UK
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Fan W, Xiao Y, Dong J, Xing J, Tang F, Shi F. Variety-driven rhizosphere microbiome bestows differential salt tolerance to alfalfa for coping with salinity stress. FRONTIERS IN PLANT SCIENCE 2023; 14:1324333. [PMID: 38179479 PMCID: PMC10766110 DOI: 10.3389/fpls.2023.1324333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Accepted: 11/28/2023] [Indexed: 01/06/2024]
Abstract
Soil salinization is a global environmental issue and a significant abiotic stress that threatens crop production. Root-associated rhizosphere microbiota play a pivotal role in enhancing plant tolerance to abiotic stresses. However, limited information is available concerning the specific variations in rhizosphere microbiota driven by different plant genotypes (varieties) in response to varying levels of salinity stress. In this study, we compared the growth performance of three alfalfa varieties with varying salt tolerance levels in soils with different degrees of salinization. High-throughput 16S rRNA and ITS sequencing were employed to analyze the rhizosphere microbial communities. Undoubtedly, the increasing salinity significantly inhibited alfalfa growth and reduced rhizosphere microbial diversity. However, intriguingly, salt-tolerant varieties exhibited relatively lower susceptibility to salinity, maintaining more stable rhizosphere bacterial community structure, whereas the reverse was observed for salt-sensitive varieties. Bacillus emerged as the dominant species in alfalfa's adaptation to salinity stress, constituting 21.20% of the shared bacterial genera among the three varieties. The higher abundance of Bacillus, Ensifer, and Pseudomonas in the rhizosphere of salt-tolerant alfalfa varieties is crucial in determining their elevated salt tolerance. As salinity levels increased, salt-sensitive varieties gradually accumulated a substantial population of pathogenic fungi, such as Fusarium and Rhizoctonia. Furthermore, rhizosphere bacteria of salt-tolerant varieties exhibited increased activity in various metabolic pathways, including biosynthesis of secondary metabolites, carbon metabolism, and biosynthesis of amino acids. It is suggested that salt-tolerant alfalfa varieties can provide more carbon sources to the rhizosphere, enriching more effective plant growth-promoting bacteria (PGPB) such as Pseudomonas to mitigate salinity stress. In conclusion, our results highlight the variety-mediated enrichment of rhizosphere microbiota in response to salinity stress, confirming that the high-abundance enrichment of specific dominant rhizosphere microbes and their vital roles play a significant role in conferring high salt adaptability to these varieties.
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Affiliation(s)
- Wenqiang Fan
- Key Laboratory of Grassland Resources of the Ministry of Education and Key Laboratory of Forage Cultivation, Processing and High-Efficiency Utilization of the Ministry of Agriculture, College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot, China
| | - Yanzi Xiao
- College of Agriculture and Forestry, Hulunbuir University, Hulunber, China
| | - Jiaqi Dong
- Key Laboratory of Grassland Resources of the Ministry of Education and Key Laboratory of Forage Cultivation, Processing and High-Efficiency Utilization of the Ministry of Agriculture, College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot, China
| | - Jing Xing
- Key Laboratory of Grassland Resources of the Ministry of Education and Key Laboratory of Forage Cultivation, Processing and High-Efficiency Utilization of the Ministry of Agriculture, College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot, China
| | - Fang Tang
- Key Laboratory of Grassland Resources of the Ministry of Education and Key Laboratory of Forage Cultivation, Processing and High-Efficiency Utilization of the Ministry of Agriculture, College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot, China
| | - Fengling Shi
- Key Laboratory of Grassland Resources of the Ministry of Education and Key Laboratory of Forage Cultivation, Processing and High-Efficiency Utilization of the Ministry of Agriculture, College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot, China
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Wang H, Li J, Liu H, Chen S, Zaman QU, Rehman M, El-Kahtany K, Fahad S, Deng G, Yang J. Variability in morpho-biochemical, photosynthetic pigmentation, enzymatic and quality attributes of potato for salinity stress tolerance. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 203:108036. [PMID: 37738866 DOI: 10.1016/j.plaphy.2023.108036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 09/08/2023] [Accepted: 09/11/2023] [Indexed: 09/24/2023]
Abstract
Salt stress has emerged as a growing global concern, exerting a significant impact on agricultural productivity. The challenges of salt stress on potatoes are crucial for ensuring food security and sustainable agriculture. To address this issue a pot trial was executed to evaluate the impacts of NaCl in the soil on the growth, photosynthetic pigments, and quality attributes of potato, plants were grown in soil spiked with various concentrations of NaCl (0, 1, 3, 5, 7 g kg-1 of soil). Results revealed that salt stress have negative impacts on the growth, biomass, photosynthesis and quality attributes of potato. Lower level of salt stress 1 g kg-1 of soil improved the fresh and dry biomass of leaves (78.70 and 47.74%) and tubers (86.04 and 88.92%) as compared to control, respectively. Higher levels of salt stress (7 g kg-1) increased lipid peroxidation in leaves and improved the enzymatic antioxidants. It was observed that enzyme activities i.e., SOD (134.97%), POD (101.02%), and CAT (28.87%) increased in leaves and are inversely related to the NaCl concentration. The combination of reduction in chlorophyll contents and soluble sugars resulted in lower levels of quality attributes i.e., amylose (68.90%) and amylopectin (16.70%) of potato. Linear relationship in growth, biomass and physiological attributes showed the strong association with increased salt stress. Furthermore, the PCA-heatmap synergy offers identifying clusters of co-regulated attributes, which pinpoint the physiological responses that exhibit the strongest correlation with increasing salt stress levels. Findings indicate that potato can be grown successfully with (1 g kg-1 of NaCl in soil) without negative impacts on plant quality. Furthermore, this study contributes valuable insights into the complexities of salt stress on potato plants and provides a foundation for developing strategies to enhance their resilience in salt-affected environments.
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Affiliation(s)
- Hongyang Wang
- Yunnan Key Laboratory of Potato Biology, Yunnan Normal University, Kunming, Yunnan, 650500, China
| | - Junhua Li
- School of Agriculture, Yunnan University, Kunming, Yunnan 650504, China
| | - Hao Liu
- School of Agriculture, Yunnan University, Kunming, Yunnan 650504, China
| | - Shengnan Chen
- Yunnan Key Laboratory of Potato Biology, Yunnan Normal University, Kunming, Yunnan, 650500, China
| | - Qamar Uz Zaman
- Department of Environmental Sciences, The University of Lahore, Lahore 54590, Pakistan
| | - Muzammal Rehman
- Guangxi Key Laboratory of Agro-environment and Agric-products Safety, Key Laboratory of Plant Genetics and Breeding, College of Agriculture, Guangxi University, Nanning 530004, China
| | - Khaled El-Kahtany
- Geology and Geophysics Department, College of Science, King Saud University, PO Box 2455, Riyadh, 11451, Saudi Arabia
| | - Shah Fahad
- Geology and Geophysics Department, College of Science, King Saud University, PO Box 2455, Riyadh, 11451, Saudi Arabia; Department of Agronomy, Abdul Wali Khan University, Mardan, Khyber Pakhtunkhwa 23200, Pakistan.
| | - Gang Deng
- School of Agriculture, Yunnan University, Kunming, Yunnan 650504, China.
| | - Jing Yang
- Yunnan Key Laboratory of Potato Biology, Yunnan Normal University, Kunming, Yunnan, 650500, China.
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8
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Xue L, Liu P, Wu A, Dong L, Wu Q, Zhao M, Liu H, Li Y, Zhang N, Wang Y. Resistance of Mycorrhizal Cinnamomum camphora Seedlings to Salt Spray Depends on K + and P Uptake. J Fungi (Basel) 2023; 9:964. [PMID: 37888220 PMCID: PMC10607215 DOI: 10.3390/jof9100964] [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: 08/24/2023] [Revised: 09/20/2023] [Accepted: 09/22/2023] [Indexed: 10/28/2023] Open
Abstract
Salt spray is a major environmental issue in coastal areas. Cinnamomum camphora is an economically important tree species that grows in the coastal areas of southern China. Arbuscular mycorrhizal fungi (AMF) can alleviate the detrimental effects of abiotic stress on host plants. However, the mechanism by which AMF mitigates the adverse effects of salt spray on C. camphora remains unclear. A pot experiment was conducted in a greenhouse, where C. camphora seedlings were exposed to four AMF regimes (inoculation with sterilized fungi, with Glomus tortuosum, Funneliformis mosseae, either alone or in combination) and three salt spray regimes (applied with distilled water, 7, and 14 mg NaCl cm-2) in order to investigate the influence on root functional traits and plant growth. The results showed that higher salt spray significantly decreased the K+ uptake, K+/Na+ ratio, N/P ratio, total dry weight, and salinity tolerance of non-mycorrhizal plants by 37.9%, 71%, 27.4%, 12.7%, and 221.3%, respectively, when compared with control plants grown under non-salinity conditions. Mycorrhizal inoculation, particularly with a combination of G. tortuosum and F. mosseae, greatly improved the P uptake, total dry weight, and salinity tolerance of plants grown under higher salt spray conditions by 51.0%, 36.7%, and 130.9%, respectively, when compared with their counterparts. The results show that AMF can alleviate the detrimental effects of salt spray on C. camphora seedlings. Moreover, an enhanced uptake of K+ and P accounted for the resistance of the plants to salt spray. Therefore, pre-inoculation with a combination of G. tortuosum and F. mosseae to improve nutrient acquisition is a potential method of protecting C. camphora plants against salt spray stress in coastal areas.
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Affiliation(s)
- Lin Xue
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou 311300, China; (L.X.); (P.L.); (Q.W.); (H.L.); (Y.L.)
| | - Peng Liu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou 311300, China; (L.X.); (P.L.); (Q.W.); (H.L.); (Y.L.)
| | - Aiping Wu
- Ecology Department, College of Environment and Ecology, Hunan Provincial Key Laboratory of Rural Ecosystem Health in Dongting Lake Area, Hunan Agricultural University, Changsha 410128, China;
| | - Lijia Dong
- School of Life and Environmental Sciences, Shaoxing University, Shaoxing 312000, China;
| | - Qiqian Wu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou 311300, China; (L.X.); (P.L.); (Q.W.); (H.L.); (Y.L.)
| | - Mingshui Zhao
- Zhejiang Tianmu Mountain National Nature Reserve Administration, Hangzhou 311311, China;
| | - Hua Liu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou 311300, China; (L.X.); (P.L.); (Q.W.); (H.L.); (Y.L.)
| | - Yan Li
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou 311300, China; (L.X.); (P.L.); (Q.W.); (H.L.); (Y.L.)
| | - Naili Zhang
- State Key Laboratory of Efficient Production of Forest Resources and the Key Laboratory of Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing 100083, China
| | - Yanhong Wang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou 311300, China; (L.X.); (P.L.); (Q.W.); (H.L.); (Y.L.)
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Liu H, Todd JL, Luo H. Turfgrass Salinity Stress and Tolerance-A Review. PLANTS (BASEL, SWITZERLAND) 2023; 12:925. [PMID: 36840273 PMCID: PMC9961807 DOI: 10.3390/plants12040925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 02/04/2023] [Accepted: 02/16/2023] [Indexed: 06/18/2023]
Abstract
Turfgrasses are ground cover plants with intensive fibrous roots to encounter different edaphic stresses. The major edaphic stressors of turfgrasses often include soil salinity, drought, flooding, acidity, soil compaction by heavy traffic, unbalanced soil nutrients, heavy metals, and soil pollutants, as well as many other unfavorable soil conditions. The stressors are the results of either naturally occurring soil limitations or anthropogenic activities. Under any of these stressful conditions, turfgrass quality will be reduced along with the loss of economic values and ability to perform its recreational and functional purposes. Amongst edaphic stresses, soil salinity is one of the major stressors as it is highly connected with drought and heat stresses of turfgrasses. Four major salinity sources are naturally occurring in soils: recycled water as the irrigation, regular fertilization, and air-borne saline particle depositions. Although there are only a few dozen grass species from the Poaceae family used as turfgrasses, these turfgrasses vary from salinity-intolerant to halophytes interspecifically and intraspecifically. Enhancement of turfgrass salinity tolerance has been a very active research and practical area as well in the past several decades. This review attempts to target new developments of turfgrasses in those soil salinity stresses mentioned above and provides insight for more promising turfgrasses in the future with improved salinity tolerances to meet future turfgrass requirements.
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Affiliation(s)
- Haibo Liu
- Department of Plant and Environmental Sciences, Clemson University, Clemson, SC 29634, USA
| | - Jason L. Todd
- Department of Plant and Environmental Sciences, Clemson University, Clemson, SC 29634, USA
| | - Hong Luo
- Department of Genetics and Biochemistry, Clemson University, Clemson, SC 29634, USA
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10
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Afshar AS, Abbaspour H. Mycorrhizal symbiosis alleviate salinity stress in pistachio plants by altering gene expression and antioxidant pathways. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2023; 29:263-276. [PMID: 36875732 PMCID: PMC9981847 DOI: 10.1007/s12298-023-01279-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 12/18/2022] [Accepted: 01/11/2023] [Indexed: 06/18/2023]
Abstract
This study investigated how inoculation of salt-stressed Pistacia vera seedlings with Rhizophagus irregularis, an arbuscular mycorrhizal fungus (AMF), affects their biomass, oxidative damage, antioxidant enzyme activity, and gene expression. Pistachio seedlings (N:36) were randomly assigned to AMF inoculation and non-inoculation groups in a pot experiment with 9 replications. Each group was further divided and randomly assigned to two salinity treatments (0 and 300 mM NaCl). At the end of week 4, three pistachio plantlets were randomly selected from each group for Rhizophagus irregularis colonization inspection, physiological and biochemical assays, and biomass measurements. Salinity activated enzymatic and non-enzymatic antioxidant systems in the pistachio plants were studied. The negative effects of salinity included reduced biomass and relative water content (RWC), increased O2 ·-, H2O2, MDA, and electrolytic leakage. Generally, Rhizophagus irregularis was found to mitigate the adverse effects of salinity in pistachio seedlings. AMF inoculation resulted in even further increases in the activities of SODs, POD, CAT, and GR enzymes, upregulating Cu/Zn-SOD, Fe-SOD, Mn-SOD, and GR genes expression in plants under salinity stress. Moreover, AMF significantly increased AsA, α-tocopherol, and carotenoids under both control and salinity conditions. The study concludes with a call for future research into the mechanisms of mycorrhiza-induced tolerance in plants under salinity stress. Supplementary Information The online version contains supplementary material available at 10.1007/s12298-023-01279-8.
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Affiliation(s)
| | - Hossein Abbaspour
- Department of Biology, North Tehran Branch, Islamic Azad University, Tehran, Iran
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11
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Chang W, Zhang Y, Ping Y, Li K, Qi DD, Song FQ. Label-free quantitative proteomics of arbuscular mycorrhizal Elaeagnus angustifolia seedlings provides insights into salt-stress tolerance mechanisms. FRONTIERS IN PLANT SCIENCE 2023; 13:1098260. [PMID: 36704166 PMCID: PMC9873384 DOI: 10.3389/fpls.2022.1098260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 12/20/2022] [Indexed: 06/18/2023]
Abstract
INTRODUCTION Soil salinization has become one of the most serious environmental issues globally. Excessive accumulation of soluble salts will adversely affect the survival, growth, and reproduction of plants. Elaeagnus angustifolia L., commonly known as oleaster or Russian olive, has the characteristics of tolerance to drought and salt. Arbuscular mycorrhizal (AM) fungi are considered to be bio-ameliorator of saline soils that can enhance the salt tolerance of the host plants. However, there is little information on the root proteomics of AM plants under salt stress. METHODS In this study, a label-free quantitative proteomics method was employed to identify the differentially abundant proteins in AM E. angustifolia seedlings under salt stress. RESULTS The results showed that a total of 170 proteins were significantly differentially regulated in E.angustifolia seedlings after AMF inoculation under salt stress. Mycorrhizal symbiosis helps the host plant E. angustifolia to respond positively to salt stress and enhances its salt tolerance by regulating the activities of some key proteins related to amino acid metabolism, lipid metabolism, and glutathione metabolism in root tissues. CONCLUSION Aspartate aminotransferase, dehydratase-enolase-phosphatase 1 (DEP1), phospholipases D, diacylglycerol kinase, glycerol-3-phosphate O-acyltransferases, and gamma-glutamyl transpeptidases may play important roles in mitigating the detrimental effect of salt stress on mycorrhizal E. angustifolia . In conclusion, these findings provide new insights into the salt-stress tolerance mechanisms of AM E. angustifolia seedlings and also clarify the role of AM fungi in the molecular regulation network of E. angustifolia under salt stress.
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Affiliation(s)
- Wei Chang
- Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region, School of Life Sciences, Heilongjiang University, Harbin, China
- Jiaxiang Industrial Technology Research Institute of Heilongjiang University, Jinin, China
| | - Yan Zhang
- Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region, School of Life Sciences, Heilongjiang University, Harbin, China
| | - Yuan Ping
- Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region, School of Life Sciences, Heilongjiang University, Harbin, China
| | - Kun Li
- Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region, School of Life Sciences, Heilongjiang University, Harbin, China
| | - Dan-Dan Qi
- Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region, School of Life Sciences, Heilongjiang University, Harbin, China
| | - Fu-Qiang Song
- Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region, School of Life Sciences, Heilongjiang University, Harbin, China
- Jiaxiang Industrial Technology Research Institute of Heilongjiang University, Jinin, China
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12
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Kwon EH, Adhikari A, Imran M, Lee DS, Lee CY, Kang SM, Lee IJ. Exogenous SA Applications Alleviate Salinity Stress via Physiological and Biochemical changes in St John's Wort Plants. PLANTS (BASEL, SWITZERLAND) 2023; 12:310. [PMID: 36679023 PMCID: PMC9861905 DOI: 10.3390/plants12020310] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 12/29/2022] [Accepted: 01/03/2023] [Indexed: 06/17/2023]
Abstract
The plant St. John's wort contains high levels of melatonin, an important biochemical that has both beneficial and adverse effects on stress. Therefore, a method for increasing melatonin levels in plants without adversely affecting their growth is economically important. In this study, we investigated the regulation of melatonin levels in St. John's wort by exposing samples to salinity stress (150 mM) and salicylic acid (0.25 mM) to augment stress tolerance. The results indicated that salinity stress significantly reduced the plant chlorophyll content and damaged the photosystem, plant growth and development. Additionally, these were reconfirmed with biochemical indicators; the levels of abscisic acid (ABA) and proline were increased and the activities of antioxidants were reduced. However, a significant increase was found in melatonin content under salinity stress through upregulation in the relative expression of tryptophan decarboxylase (TDC), tryptamine 5-hydroxylase (T5H), serotonin N-acetyltransferase (SNAT), and N-acetylserotonin methyltransferase (ASMT). The salicylic acid (SA) treatment considerably improved their photosynthetic activity, the maximum photochemical quantum yield (133%), the potential activity of PSⅡ (294%), and the performance index of electron flux to the final PS I electron acceptors (2.4%). On the other hand, SA application reduced ABA levels (32%); enhanced the activity of antioxidant enzymes, such as superoxide dismutase (SOD) (15.4%) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) (120%); and increased polyphenol (6.4%) and flavonoid (75.4%) levels in salinity-stressed St. John's wort plants. Similarly, SA application under NaCl stress significantly modulated the melatonin content in terms of ion balance; the level of melatonin was reduced after SA application on salt-treated seedlings but noticeably higher than on only SA-treated and non-treated seedlings. Moreover, the proline content was reduced considerably and growth parameters, such as plant biomass, shoot length, and chlorophyll content, were enhanced following treatment of salinity-stressed St. John's wort plants with salicylic acid. These findings demonstrate the beneficial impact of salt stress in terms of a cost-effective approach to extract melatonin in larger quantities from St. John's wort. They also suggest the efficiency of salicylic acid in alleviating stress tolerance and promoting growth of St. John's wort plants.
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Affiliation(s)
- Eun-Hae Kwon
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Arjun Adhikari
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Muhammad Imran
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Da-Sol Lee
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Chung-Yeol Lee
- Department of Statictics Graduate School, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Sang-Mo Kang
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea
| | - In-Jung Lee
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea
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13
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The arbuscular mycorrhizal symbiosis alleviating long-term salt stress through the modulation of nutrient elements, osmolytes, and antioxidant capacity in rosemary. Biologia (Bratisl) 2022. [DOI: 10.1007/s11756-022-01285-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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14
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Insights into the molecular aspects of salt stress tolerance in mycorrhizal plants. World J Microbiol Biotechnol 2022; 38:253. [DOI: 10.1007/s11274-022-03440-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 10/13/2022] [Indexed: 11/16/2022]
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15
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Zhang Z, Ge S, Fan LC, Guo S, Hu Q, Ahammed GJ, Yan P, Zhang LP, Li ZZ, Zhang JY, Fu J, Han W, Li X. Diversity in rhizospheric microbial communities in tea varieties at different locations and tapping potential beneficial microorganisms. Front Microbiol 2022; 13:1027444. [PMID: 36439826 PMCID: PMC9685800 DOI: 10.3389/fmicb.2022.1027444] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 10/14/2022] [Indexed: 12/01/2023] Open
Abstract
Soil microenvironments and plant varieties could largely affect rhizosphere microbial community structure and functions. However, their specific effects on the tea rhizosphere microbial community are yet not clear. Beneficial microorganisms are important groups of microbial communities that hold ecological functionalities by playing critical roles in plant disease resistance, and environmental stress tolerance. Longjing43 and Zhongcha108 are two widely planted tea varieties in China. Although Zhongcha108 shows higher disease resistance than Longjing43, the potential role of beneficial tea rhizosphere microbes in disease resistance is largely unknown. In this study, the structure and function of rhizosphere microbial communities of these two tea varieties were compared by using the Illumina MiSeq sequencing (16S rRNA gene and ITS) technologies. Rhizosphere soil was collected from four independent tea gardens distributed at two locations in Hangzhou and Shengzhou cities in eastern China, Longjing43 and Zhongcha108 are planted at both locations in separate gardens. Significant differences in soil physicochemical properties as demonstrated by ANOVA and PCA, and distinct rhizosphere microbial communities by multiple-biotech analyses (PCoA, LEfSe, Co-occurrence network analyses) between both locations and tea varieties (p < 0.01) were found. Functions of bacteria were annotated by the FAPROTAX database, and a higher abundance of Nitrososphaeraceae relating to soil ecological function was found in rhizosphere soil in Hangzhou. LDA effect size showed that the abundance of arbuscular mycorrhizal fungi (AMF) was higher in Zhongcha108 than that in Longjing43. Field experiments further confirmed that the colonization rate of AMF was higher in Zhongcha108. This finding testified that AMF could be the major beneficial tea rhizosphere microbes that potentially function in enhanced disease resistance. Overall, our results confirmed that locations affected the microbial community greater than that of tea varieties, and fungi might be more sensitive to the change in microenvironments. Furthermore, we found several beneficial microorganisms, which are of great significance in improving the ecological environment of tea gardens and the disease resistance of tea plants. These beneficial microbial communities may also help to further reveal the mechanism of disease resistance in tea and potentially be useful for mitigating climate change-associated challenges to tea gardens in the future.
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Affiliation(s)
- Zheng Zhang
- Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture and Rural Affairs, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
| | - ShiBei Ge
- Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture and Rural Affairs, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
| | - Li-Chao Fan
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China
| | - Shuai Guo
- Hangzhou Botanical Garden, Hangzhou West Lake Academy of Landscape Science, Hangzhou, China
| | - Qiang Hu
- Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture and Rural Affairs, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
| | - Golam Jalal Ahammed
- College of Horticulture and Plant Protection, Henan University of Science and Technology, Luoyang, China
| | - Peng Yan
- Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture and Rural Affairs, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
| | - Li-Ping Zhang
- Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture and Rural Affairs, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
| | - Zheng-Zhen Li
- Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture and Rural Affairs, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
| | - Jian-Yang Zhang
- Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture and Rural Affairs, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
| | - Jianyu Fu
- Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture and Rural Affairs, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
| | - Wenyan Han
- Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture and Rural Affairs, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
| | - Xin Li
- Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture and Rural Affairs, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
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16
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Tahjib-Ul-Arif M, Wei X, Jahan I, Hasanuzzaman M, Sabuj ZH, Zulfiqar F, Chen J, Iqbal R, Dastogeer KMG, Sohag AAM, Tonny SH, Hamid I, Al-Ashkar I, Mirzapour M, El Sabagh A, Murata Y. Exogenous nitric oxide promotes salinity tolerance in plants: A meta-analysis. FRONTIERS IN PLANT SCIENCE 2022; 13:957735. [PMID: 36420041 PMCID: PMC9676926 DOI: 10.3389/fpls.2022.957735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 09/23/2022] [Indexed: 06/16/2023]
Abstract
Nitric oxide (NO) has received much attention since it can boost plant defense mechanisms, and plenty of studies have shown that exogenous NO improves salinity tolerance in plants. However, because of the wide range of experimental settings, it is difficult to assess the administration of optimal dosages, frequency, timing, and method of application and the overall favorable effects of NO on growth and yield improvements. Therefore, we conducted a meta-analysis to reveal the exact physiological and biochemical mechanisms and to understand the influence of plant-related or method-related factors on NO-mediated salt tolerance. Exogenous application of NO significantly influenced biomass accumulation, growth, and yield irrespective of salinity stress. According to this analysis, seed priming and foliar pre-treatment were the most effective methods of NO application to plants. Moreover, one-time and regular intervals of NO treatment were more beneficial for plant growth. The optimum concentration of NO ranges from 0.1 to 0.2 mM, and it alleviates salinity stress up to 150 mM NaCl. Furthermore, the beneficial effect of NO treatment was more pronounced as salinity stress was prolonged (>21 days). This meta-analysis showed that NO supplementation was significantly applicable at germination and seedling stages. Interestingly, exogenous NO treatment boosted plant growth most efficiently in dicots. This meta-analysis showed that exogenous NO alleviates salt-induced oxidative damage and improves plant growth and yield potential by regulating osmotic balance, mineral homeostasis, photosynthetic machinery, the metabolism of reactive oxygen species, and the antioxidant defense mechanism. Our analysis pointed out several research gaps, such as lipid metabolism regulation, reproductive stage performance, C4 plant responses, field-level yield impact, and economic profitability of farmers in response to exogenous NO, which need to be evaluated in the subsequent investigation.
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Affiliation(s)
- Md. Tahjib-Ul-Arif
- Plant Biology and Biofunctional Chemistry Lab, Department of Biochemistry and Molecular Biology, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Xiangying Wei
- Institute of Oceanography, College of Geography and Oceanography, Minjiang University, Fuzhou, China
| | - Israt Jahan
- Department of Biology, York University, Toronto, ON, Canada
| | - Md. Hasanuzzaman
- Department of Biotechnology, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Zahid Hasan Sabuj
- Breeding Division, Bangladesh Sugarcrop Research Institute, Pabna, Bangladesh
| | - Faisal Zulfiqar
- Department of Horticultural Sciences, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Jianjun Chen
- Environmental Horticulture Department and Mid-Florida Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida, Apopka, FL, United States
| | - Rashid Iqbal
- Department of Agronomy, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | | | - Abdullah Al Mamun Sohag
- Plant Biology and Biofunctional Chemistry Lab, Department of Biochemistry and Molecular Biology, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Sadia Haque Tonny
- Plant Biology and Biofunctional Chemistry Lab, Department of Biochemistry and Molecular Biology, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Imran Hamid
- Faculty of Animal Husbandry, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Ibrahim Al-Ashkar
- Department of Plant Production, College of Food and Agriculture, King Saud University, Riyadh, Saudi Arabia
- Agronomy Department, Faculty of Agriculture, Al-Azhar University, Cairo, Egypt
| | - Mohsen Mirzapour
- Faculty of Agriculture, Department of Agricultural Biotechnology, Siirt University, Siirt, Turkey
| | - Ayman El Sabagh
- Department of Field Crops, Faculty of Agriculture, Siirt University, Siirt, Turkey
- Department of Agronomy, Faculty of Agriculture, Kafrelsheikh University, Kafr el-sheikh, Egypt
| | - Yoshiyuki Murata
- Graduate School of Environmental and Life Science, Okayama University, Okayama, Japan
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17
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Funneliformis constrictum modulates polyamine metabolism to enhance tolerance of Zea mays L. to salinity. Microbiol Res 2022; 266:127254. [DOI: 10.1016/j.micres.2022.127254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 09/11/2022] [Accepted: 11/03/2022] [Indexed: 11/06/2022]
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18
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Tufail MA, Ayyub M, Irfan M, Shakoor A, Chibani CM, Schmitz RA. Endophytic bacteria perform better than endophytic fungi in improving plant growth under drought stress: A meta-comparison spanning 12 years (2010-2021). PHYSIOLOGIA PLANTARUM 2022; 174:e13806. [PMID: 36271716 DOI: 10.1111/ppl.13806] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 09/30/2022] [Accepted: 10/20/2022] [Indexed: 06/16/2023]
Abstract
Drought stress is a serious issue that affects agricultural productivity all around the world. Several researchers have reported using plant growth-promoting endophytic bacteria to enhance the drought resistance of crops. However, how endophytic bacteria and endophytic fungi are effectively stimulating plant growth under drought stress is still largely unknown. In this article, a global meta-analysis was undertaken to compare the plant growth-promoting effects of bacterial and fungal endophytes and to identify the processes by which both types of endophytes stimulate plant growth under drought stress. Moreover, this meta-analysis enlightens how plant growth promotion varies across crop types (C3 vs. C4 and monocot vs. dicot), experiment types (in vitro vs. pots vs. field), and the inoculation methods (seed vs. seedling). Specifically, this research included 75 peer-reviewed publications, 170 experiments, 20 distinct bacterial genera, and eight fungal classes. On average, both endophytic bacterial and fungal inoculation increased plant dry and fresh biomass under drought stress. The effect of endophytic bacterial inoculation on plant dry biomass, shoot dry biomass, root length, photosynthetic rate, leaf area, and gibberellins productions were at least two times greater than that of fungal inoculation. In addition, under drought stress, bacterial inoculation increased the proline content of C4 plants. Overall, the findings of this meta-analysis indicate that both endophytic bacterial and fungal inoculation of plants is beneficial under drought conditions, but the extent of benefit is higher with endophytic bacteria inoculation but it varies across crop type, experiment type, and inoculation method.
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Affiliation(s)
| | - Muhaimen Ayyub
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Irfan
- Soil and Environmental Sciences Division, Nuclear Institute of Agriculture (NIA), Tandojam, Pakistan
| | - Awais Shakoor
- Teagasc, Environment, Soils, and Land-Use Department, Wexford, Ireland
| | | | - Ruth A Schmitz
- Institute for Microbiology, Christian-Albrechts-University Kiel, Kiel, Germany
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19
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Ghosh D, Sarkar A, Basu AG, Roy S. Effect of plastic pollution on freshwater flora: A meta-analysis approach to elucidate the factors influencing plant growth and biochemical markers. WATER RESEARCH 2022; 225:119114. [PMID: 36152443 DOI: 10.1016/j.watres.2022.119114] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 09/06/2022] [Accepted: 09/12/2022] [Indexed: 06/16/2023]
Abstract
The deterioration in the water quality of urban water bodies through plastic contamination is emerging as a matter of serious concern. Microplastics (MPs) and nanoplastics (NPs) both affect the growth and productivity of aquatic flora. However, there have been a lot of variations in the reported studies which calls for revisiting the results with an analytical approach. Therefore, this study was designed to systematically evaluate the publications based on PRISMA (2020) guidelines. In this connection, 43 eligible articles were selected for meta-analysis followed by subgroup analysis to determine the impact of size, concentration, plastic polymers, and effect of plant classes on several physiological and biochemical parameters (growth, chlorophyll-a, carotenoids, protein, and antioxidant enzymes). The results indicated that the higher concentrations of plastics negatively affected the growth, and also enhanced the protein content and antioxidative enzyme activity. While, NPs were found to impart an inhibitory effect on pigment contents, along with a significant increase in protein content and antioxidative enzyme activity. Among the plastic polymers, dibutyl phthalate (DBP) showed a comparatively higher effect on growth, whereas the photosynthetic pigments were disrupted to a greater extent in the presence of polyvinyl chloride (PVC) plastics. Moreover, the growth parameters under plastic exposure were affected in the algal members to a greater extent in comparison to the other plant groups. Lastly, several plants like Komvophoron, Elodea, Myriophyllum, Nostoc, Raphidocelis, Scenedesmus, Utricularia, Dunaliella, and Lemna appeared to be more tolerant than others (Tolerance Index ≥ 0.8), showing a significantly minimal effect on growth inhibition.
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Affiliation(s)
- Dibakar Ghosh
- Plant Biochemistry Laboratory, Department of Botany, University of North Bengal, Raja Rammohunpur, Dist. Darjeeling, West Bengal, India
| | - Ashis Sarkar
- Plant Biochemistry Laboratory, Department of Botany, University of North Bengal, Raja Rammohunpur, Dist. Darjeeling, West Bengal, India
| | - Anindita Ghosh Basu
- Plant Biochemistry Laboratory, Department of Botany, University of North Bengal, Raja Rammohunpur, Dist. Darjeeling, West Bengal, India
| | - Swarnendu Roy
- Plant Biochemistry Laboratory, Department of Botany, University of North Bengal, Raja Rammohunpur, Dist. Darjeeling, West Bengal, India.
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20
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Ma Z, Zhao X, He A, Cao Y, Han Q, Lu Y, Yong JWH, Huang J. Mycorrhizal symbiosis reprograms ion fluxes and fatty acid metabolism in wild jujube during salt stress. PLANT PHYSIOLOGY 2022; 189:2481-2499. [PMID: 35604107 PMCID: PMC9342988 DOI: 10.1093/plphys/kiac239] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 04/30/2022] [Indexed: 05/25/2023]
Abstract
Chinese jujube (Ziziphus jujuba) is an important fruit tree in China, and soil salinity is the main constraint affecting jujube production. It is unclear how arbuscular mycorrhizal (AM) symbiosis supports jujube adaptation to salt stress. Herein, we performed comparative physiological, ion flux, fatty acid (FA) metabolomic, and transcriptomic analyses to examine the mechanism of AM jujube responding to salt stress. AM seedlings showed better performance during salt stress. AM symbiosis altered phytohormonal levels: indole-3-acetic acid and abscisic acid contents were significantly increased in AM roots and reduced by salt stress. Mycorrhizal colonization enhanced root H+ efflux and K+ influx, while inducing expression of plasma membrane-type ATPase 7 (ZjAHA7) and high-affinity K+ transporter 2 (ZjHAK2) in roots. High K+/Na+ homeostasis was maintained throughout salt exposure. FA content was elevated in AM leaves as well as roots, especially for palmitic acid, oleic acid, trans oleic acid, and linoleic acid, and similar effects were also observed in AM poplar (Populus. alba × Populus. glandulosa cv. 84K) and Medicago truncatula, indicating AM symbiosis elevating FA levels could be a conserved physiological effect. Gene co-expression network analyses uncovered a core gene set including 267 genes in roots associated with AM symbiosis and conserved transcriptional responses, for example, FA metabolism, phytohormone signal transduction, SNARE interaction in vesicular transport, and biotin metabolism. In contrast to widely up-regulated genes related to FA metabolism in AM roots, limited genes were affected in leaves. We propose a model of AM symbiosis-linked reprogramming of FA metabolism and provide a comprehensive insight into AM symbiosis with a woody species adaptation to salt stress.
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Affiliation(s)
- Zhibo Ma
- Key Laboratory of National Forestry and Grassland Administration on Silviculture in Loess Plateau, College of Forestry, Northwest A&F University, Yangling 712100, China
| | - Xinchi Zhao
- Key Laboratory of National Forestry and Grassland Administration on Silviculture in Loess Plateau, College of Forestry, Northwest A&F University, Yangling 712100, China
| | - Aobing He
- Key Laboratory of National Forestry and Grassland Administration on Silviculture in Loess Plateau, College of Forestry, Northwest A&F University, Yangling 712100, China
| | - Yan Cao
- Key Laboratory of National Forestry and Grassland Administration on Silviculture in Loess Plateau, College of Forestry, Northwest A&F University, Yangling 712100, China
| | - Qisheng Han
- Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang 453002, China
| | - Yanjun Lu
- Key Laboratory of National Forestry and Grassland Administration on Silviculture in Loess Plateau, College of Forestry, Northwest A&F University, Yangling 712100, China
| | - Jean Wan Hong Yong
- Department of Biosystems and Technology, Swedish University of Agricultural Sciences, Alnarp 75007, Sweden
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21
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Fall F, Sanguin H, Fall D, Tournier E, Bakhoum N, Ndiaye C, Diouf D, Bâ AM. Changes in Intraspecific Diversity of the Arbuscular Mycorrhizal Community Involved in Plant-Plant Interactions Between Sporobolus robustus Kunth and Prosopis juliflora (Swartz) DC Along an Environmental Gradient. MICROBIAL ECOLOGY 2022; 83:886-898. [PMID: 34245330 DOI: 10.1007/s00248-021-01779-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 05/19/2021] [Indexed: 06/13/2023]
Abstract
The intensification of biological processes coping with salt stress became a major issue to mitigate land degradation. The Sine-Saloum Delta in Senegal is characterized by salt-affected soils with vegetation dominated by salt-tolerant grass Sporobolus robustus and shrubs like Prosopis juliflora. Plant experiments in controlled conditions suggested that arbuscular mycorrhizal (AM) fungi might be the key actors of facilitation process observed between S. robustus and P. juliflora, but the AM fungal community determinants are largely unknown. The current field-based study aimed at (1) characterizing the environmental drivers (rhizosphere physico-chemical properties, plant type and season) of the AM fungal community along an environmental gradient and (2) identifying the AM fungal taxa that might explain the S. robustus-mediated benefits to P. juliflora. Glomeraceae predominated in the two plants, but a higher richness was observed for S. robustus. The pH and salinity were the main drivers of AM fungal community associated with the two plants, negatively impacting richness and diversity. However, while a negative impact was also observed on mycorrhizal colonization for S. robustus, P. juliflora showed opposite colonization patterns. Furthermore, no change was observed in terms of AM fungal community dissimilarity between the two plants along the environmental gradient as would be expected according to the stress-gradient and complementary hypotheses when a facilitation process occurs. However, changes in intraspecific diversity of shared AM fungal community between the two plants were observed, highlighting 23 AM fungal OTUs associated with both plants and the highest salinity levels. Consequently, the increase of their abundance and frequency along the environmental gradient might suggest their potential role in the facilitation process that can take place between the two plants. Their use in ecological engineering could also represent promising avenues for improving vegetation restoration in saline Senegalese's lands.
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Affiliation(s)
- Fatoumata Fall
- LCM Laboratoire Commun de Microbiologie, IRD, ISRA, UCAD, Centre de Recherche de Bel-Air, Dakar, Senegal
- LAPSE Laboratoire Mixte International Adaptation Des Plantes Et Microorganismes Associés Aux Stress Environnementaux, Dakar, Senegal
| | - Hervé Sanguin
- CIRAD, UMR PHIM, 34090, Montpellier, France.
- PHIM Plant Health Institute, CIRAD, INRAE, Institut Agro, IRD, Univ Montpellier, Montpellier, France.
| | - Dioumacor Fall
- LCM Laboratoire Commun de Microbiologie, IRD, ISRA, UCAD, Centre de Recherche de Bel-Air, Dakar, Senegal
- Institut Sénégalais de Recherches Agricoles (ISRA), Centre National de Recherches Agronomiques (CNRA), Bambey, Senegal
| | - Estelle Tournier
- CIRAD, UMR PHIM, 34090, Montpellier, France
- PHIM Plant Health Institute, CIRAD, INRAE, Institut Agro, IRD, Univ Montpellier, Montpellier, France
| | - Niokhor Bakhoum
- LCM Laboratoire Commun de Microbiologie, IRD, ISRA, UCAD, Centre de Recherche de Bel-Air, Dakar, Senegal
- LAPSE Laboratoire Mixte International Adaptation Des Plantes Et Microorganismes Associés Aux Stress Environnementaux, Dakar, Senegal
- Département Environnement, Biodiversité Et Développement Durable, Université du Sine Saloum El-Hadj Ibrahima NIASS (USSEIN), Kaolack, Senegal
| | - Cheikh Ndiaye
- Département de Biologie Végétale, Université Cheikh Anta Diop de Dakar, Dakar, Senegal
| | - Diégane Diouf
- Département Environnement, Biodiversité Et Développement Durable, Université du Sine Saloum El-Hadj Ibrahima NIASS (USSEIN), Kaolack, Senegal
| | - Amadou Mustapha Bâ
- Laboratoire de Biologie Et Physiologie Végétales, Université Des Antilles, Guadeloupe, France
- LSTM, CIRAD, INRAE, IRD, Institut Agro, Univ Montpellier, Montpellier, France
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22
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Dastogeer KMG, Zahan MI, Rhaman MS, Sarker MSA, Chakraborty A. Microbe-Mediated Thermotolerance in Plants and Pertinent Mechanisms- A Meta-Analysis and Review. Front Microbiol 2022; 13:833566. [PMID: 35330772 PMCID: PMC8940538 DOI: 10.3389/fmicb.2022.833566] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Accepted: 02/04/2022] [Indexed: 01/10/2023] Open
Abstract
Microbial symbionts can mediate plant stress responses by enhancing thermal tolerance, but less attention has been paid to measuring these effects across plant-microbe studies. We performed a meta-analysis of published studies as well as discussed with relevant literature to determine how the symbionts influence plant responses under non-stressed versus thermal-stressed conditions. As compared to non-inoculated plants, inoculated plants had significantly higher biomass and photosynthesis under heat stress conditions. A significantly decreased accumulation of malondialdehyde (MDA) and hydrogen peroxide (H2O2) indicated a lower oxidation level in the colonized plants, which was also correlated with the higher activity of catalase, peroxidase, glutathione reductase enzymes due to microbial colonization under heat stress. However, the activity of superoxide dismutase, ascorbate oxidase, ascorbate peroxidase, and proline were variable. Our meta-analysis revealed that microbial colonization influenced plant growth and physiology, but their effects were more noticeable when their host plants were exposed to high-temperature stress than when they grew under ambient temperature conditions. We discussed the mechanisms of microbial conferred plant thermotolerance, including at the molecular level based on the available literature. Further, we highlighted and proposed future directions toward exploring the effects of symbionts on the heat tolerances of plants for their implications in sustainable agricultural production.
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Affiliation(s)
| | - Mst. I. Zahan
- Scientific Officer (Breeding Division), Bangladesh Sugarcrop Research Institute, Pabna, Bangladesh
| | - Mohammad S. Rhaman
- Department of Seed Science and Technology, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Mohammad S. A. Sarker
- Basic and Applied Research on Jute Project, Bangladesh Jute Research Institute (BJRI), Dhaka, Bangladesh
| | - Anindita Chakraborty
- Department of Genetic Engineering and Biotechnology, Shahjalal University of Science and Technology, Sylhet, Bangladesh
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23
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Roy S, Chakraborty AP, Chakraborty R. Understanding the potential of root microbiome influencing salt-tolerance in plants and mechanisms involved at the transcriptional and translational level. PHYSIOLOGIA PLANTARUM 2021; 173:1657-1681. [PMID: 34549441 DOI: 10.1111/ppl.13570] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 09/10/2021] [Accepted: 09/20/2021] [Indexed: 06/13/2023]
Abstract
Soil salinity severely affects plant growth and development and imparts inevitable losses to crop productivity. Increasing the concentration of salts in the vicinity of plant roots has severe consequences at the morphological, biochemical, and molecular levels. These include loss of chlorophyll, decrease in photosynthetic rate, reduction in cell division, ROS generation, inactivation of antioxidative enzymes, alterations in phytohormone biosynthesis and signaling, and so forth. The association of microorganisms, viz. plant growth-promoting rhizobacteria, endophytes, and mycorrhiza, with plant roots constituting the root microbiome can confer a greater degree of salinity tolerance in addition to their inherent ability to promote growth and induce defense mechanisms. The mechanisms involved in induced stress tolerance bestowed by these microorganisms involve the modulation of phytohormone biosynthesis and signaling pathways (including indole acetic acid, gibberellic acid, brassinosteroids, abscisic acid, and jasmonic acid), accumulation of osmoprotectants (proline, glycine betaine, and sugar alcohols), and regulation of ion transporters (SOS1, NHX, HKT1). Apart from this, salt-tolerant microorganisms are known to induce the expression of salt-responsive genes via the action of several transcription factors, as well as by posttranscriptional and posttranslational modifications. Moreover, the potential of these salt-tolerant microflora can be employed for sustainably improving crop performance in saline environments. Therefore, this review will briefly focus on the key responses of plants under salinity stress and elucidate the mechanisms employed by the salt-tolerant microorganisms in improving plant tolerance under saline environments.
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Affiliation(s)
- Swarnendu Roy
- Plant Biochemistry Laboratory, Department of Botany, University of North Bengal, Darjeeling, West Bengal, India
| | | | - Rakhi Chakraborty
- Department of Botany, Acharya Prafulla Chandra Roy Government College, Darjeeling, West Bengal, India
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24
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Outamamat E, Bourhia M, Dounas H, Salamatullah AM, Alzahrani A, Alyahya HK, Albadr NA, Al Feddy MN, Mnasri B, Ouahmane L. Application of Native or Exotic Arbuscular Mycorrhizal Fungi Complexes and Monospecific Isolates from Saline Semi-Arid Mediterranean Ecosystems Improved Phoenix dactylifera's Growth and Mitigated Salt Stress Negative Effects. PLANTS (BASEL, SWITZERLAND) 2021; 10:2501. [PMID: 34834866 PMCID: PMC8624251 DOI: 10.3390/plants10112501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 11/01/2021] [Accepted: 11/12/2021] [Indexed: 01/24/2023]
Abstract
The date, the palm tree (Phoenix dactylifera L.) is an important component of arid and semi-arid Mediterranean ecosystems, particularly in Morocco where it plays a considerable socio-economic and ecological role. This species is largely affected by desertification, global warming, and anthropic pressure. Salinity is a very worrying problem that negatively affects the growth and the physiological and biochemical activities of the date palm. In these arid zones, the main challenge is to develop new environmentally friendly technologies that improve crop tolerance to abiotic restraints including salinity. In this sense, Arbuscular mycorrhizal fungi (AMF) have received much attention due to their capability in promoting plant growth and tolerance to abiotic and biotic stresses. It is thus fitting that the current research work was undertaken to evaluate and compare the effects of native AMF on the development of the growth and tolerance of date palm to salt stress along with testing their role as biofertilizers. To achieve this goal, two complexes and two monospecific isolates of native and non-native AMF were used to inoculate date palm seedlings under saline stress (0 g·L-1 Na Cl, 10 g·L-1, and 20 g·L-1 Na Cl). The obtained results showed that salinity drastically affected the physiological parameters and growth of date palm seedlings, whilst the application of selected AMF significantly improved growth parameters and promoted the activities of antioxidant enzymes as a protective strategy. Inoculation with non-native AMF complex and monospecific isolates showed higher responses for all analyzed parameters when compared with the native complex and isolate. It therefore becomes necessary to glamorize the fungal communities associated with date palm for their use in the inoculation of Phoenix dactylifera L. seedlings.
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Affiliation(s)
- Elmostapha Outamamat
- Labeled Research Unit-CNRST N°4, Laboratory of Microbial Biotechnology, Agro-Sciences and Environment (BioMAgE), Cadi Ayyad University, Marrakesh 40000, Morocco; (E.O.); (M.B.); (H.D.)
| | - Mohammed Bourhia
- Labeled Research Unit-CNRST N°4, Laboratory of Microbial Biotechnology, Agro-Sciences and Environment (BioMAgE), Cadi Ayyad University, Marrakesh 40000, Morocco; (E.O.); (M.B.); (H.D.)
| | - Hanane Dounas
- Labeled Research Unit-CNRST N°4, Laboratory of Microbial Biotechnology, Agro-Sciences and Environment (BioMAgE), Cadi Ayyad University, Marrakesh 40000, Morocco; (E.O.); (M.B.); (H.D.)
| | - Ahmad Mohammad Salamatullah
- Department of Food Science & Nutrition, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia; (A.M.S.); (A.A.); (H.K.A.); (N.A.A.)
| | - Abdulhakeem Alzahrani
- Department of Food Science & Nutrition, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia; (A.M.S.); (A.A.); (H.K.A.); (N.A.A.)
| | - Heba Khalil Alyahya
- Department of Food Science & Nutrition, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia; (A.M.S.); (A.A.); (H.K.A.); (N.A.A.)
| | - Nawal A. Albadr
- Department of Food Science & Nutrition, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia; (A.M.S.); (A.A.); (H.K.A.); (N.A.A.)
| | - Mohamed Najib Al Feddy
- Plant Protection Unit, Laboratory of Phyto-Bacteriology, National Institute of Agronomic Research, Marrakesh 40000, Morocco;
| | - Bacem Mnasri
- Centre of Biotechnology of Borj-Cédria, Hammam-Lif 2050, Tunisia;
| | - Lahcen Ouahmane
- Labeled Research Unit-CNRST N°4, Laboratory of Microbial Biotechnology, Agro-Sciences and Environment (BioMAgE), Cadi Ayyad University, Marrakesh 40000, Morocco; (E.O.); (M.B.); (H.D.)
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25
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Wang H, Weil M, Dumack K, Zak D, Münch D, Günther A, Jurasinski G, Blume-Werry G, Kreyling J, Urich T. Eukaryotic rather than prokaryotic microbiomes change over seasons in rewetted fen peatlands. FEMS Microbiol Ecol 2021; 97:6356952. [PMID: 34427631 DOI: 10.1093/femsec/fiab121] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 08/20/2021] [Indexed: 12/12/2022] Open
Abstract
In the last decades, rewetting of drained peatlands is on the rise worldwide, to restore their significant carbon sink function. Despite the increasing understanding of peat microbiomes, little is known about the seasonal dynamics and network interactions of the microbial communities in these ecosystems, especially in rewetted fens (groundwater-fed peatlands). Here, we investigated the seasonal dynamics in both prokaryotic and eukaryotic microbiomes in three common fen types in Northern Germany. The eukaryotic microbiomes, including fungi, protists and microbial metazoa, showed significant changes in their community structures across the seasons in contrast to largely unaffected prokaryotic microbiomes. Furthermore, our results proved that the dynamics in eukaryotic microbiomes in the rewetted sites differed between fen types, specifically in terms of saprotrophs, arbuscular mycorrhiza and grazers of bacteria. The co-occurrence networks also exhibited strong seasonal dynamics that differed between rewetted and drained sites, and the correlations involving protists and prokaryotes were the major contributors to these dynamics. Our study provides the insight that microbial eukaryotes mainly define the seasonal dynamics of microbiomes in rewetted fen peatlands. Accordingly, future research should unravel the importance of eukaryotes for biogeochemical processes, especially the under-characterized protists and metazoa, in these poorly understood ecosystems.
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Affiliation(s)
- Haitao Wang
- Institute of Microbiology, University of Greifswald, Felix-Hausdorff-Str. 8, 17487 Greifswald, Germany
| | - Micha Weil
- Institute of Microbiology, University of Greifswald, Felix-Hausdorff-Str. 8, 17487 Greifswald, Germany
| | - Kenneth Dumack
- Cologne Biocenter, University of Cologne, Zülpicher Strasse 47b, 50674 Cologne, Germany
| | - Dominik Zak
- Department of Bioscience, Aarhus University, Vejlsøvej 25, 8600 Silkeborg, Denmark.,Department of Chemical Analytics and Biogeochemistry, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 301, 12587 Berlin, Germany
| | - Diana Münch
- Institute of Microbiology, University of Greifswald, Felix-Hausdorff-Str. 8, 17487 Greifswald, Germany
| | - Anke Günther
- Faculty of Agriculture and Environmental Sciences, University of Rostock, Justus-von-Liebig-Weg 6, 18059 Rostock, Germany
| | - Gerald Jurasinski
- Faculty of Agriculture and Environmental Sciences, University of Rostock, Justus-von-Liebig-Weg 6, 18059 Rostock, Germany
| | - Gesche Blume-Werry
- Experimental Plant Ecology, University of Greifswald, Soldmannstr. 15, 17487 Greifswald, Germany
| | - Jürgen Kreyling
- Experimental Plant Ecology, University of Greifswald, Soldmannstr. 15, 17487 Greifswald, Germany
| | - Tim Urich
- Institute of Microbiology, University of Greifswald, Felix-Hausdorff-Str. 8, 17487 Greifswald, Germany
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26
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Mansour MMF, Emam MM, Salama KHA, Morsy AA. Sorghum under saline conditions: responses, tolerance mechanisms, and management strategies. PLANTA 2021; 254:24. [PMID: 34224010 DOI: 10.1007/s00425-021-03671-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 06/24/2021] [Indexed: 06/13/2023]
Abstract
An overview is presented of recent advances in our knowledge of responses and mechanisms rendering adaptation to saline conditions in sorghum. Different strategies deployed to enhance salinity stress tolerance in sorghum are also pointed out. Salinity stress is a growing problem worldwide. Sorghum is the fifth key crop among cereals. Understanding responses and tolerance strategies in sorghum would be therefore helpful effort for providing biomarkers for designing greatest salinity-tolerant sorghum genotypes. When sorghum exposed to salinity, salinity-tolerant genotypes most probably reprogram their gene expression to activate adaptive biochemical and physiological responses for survival. The review thus discusses the possible physiological and biochemical responses that confer salinity tolerance to sorghum under saline conditions. Although it is not characterized in sorghum, salinity perceiving and transmitting signals to downstream responses via signaling transduction pathways most likely are essential strategy for sorghum adaptation to salinity stress. Sorghum has also shown to withstand moderate saline environments and retain the germination, growth, and photosynthetic activities. Salinity-tolerant sorghum genotypes show the ability to exclude excessive Na+ from reaching shoots and induce ion homeostasis. Osmotic homeostasis and ROS detoxification are also evident as salinity tolerance strategies in sorghum. These above mechanisms lead to re-establishment of cellular ionic, osmotic, and redox homeostasis as well as photosynthesis efficiency. It is noteworthy that these mechanisms act individually or co-operatively to minimize the salinity hazards and enhance acclimation in sorghum. We conclude, however, that although these responses contribute to sorghum tolerance to salinity stress, they seem to be not adequate at higher concentrations of salinity, which agrees with sorghum ranking as moderately salinity-tolerant crop. Also, some of these tolerance strategies reported in other crops are not well studied and documented in sorghum, but most probably have roles in sorghum. Further improvement in sorghum salinity tolerance using different approaches is definitely necessary to meet the requirements of its harsh production environments, and therefore, these approaches are addressed.
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Affiliation(s)
| | - Manal Mohamed Emam
- Department of Botany, Faculty of Science, Ain Shams University, Cairo, 11566, Egypt
| | | | - Amal Ahmed Morsy
- Department of Botany, Faculty of Science, Ain Shams University, Cairo, 11566, Egypt
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27
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Rashad YM, Fekry WME, Sleem MM, Elazab NT. Effects of Mycorrhizal Colonization on Transcriptional Expression of the Responsive Factor JERF3 and Stress-Responsive Genes in Banana Plantlets in Response to Combined Biotic and Abiotic Stresses. FRONTIERS IN PLANT SCIENCE 2021; 12:742628. [PMID: 34777424 PMCID: PMC8580877 DOI: 10.3389/fpls.2021.742628] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 09/30/2021] [Indexed: 05/09/2023]
Abstract
Banana plants (Musa acuminata L.) are exposed to various biotic and abiotic stresses that affect their production worldwide. Banana plants respond to these stresses, but their responses to combined stresses are unique and differ from those to various individual stresses. This study reported the effects of the mycorrhizal colonization of banana roots and/or infection with root rot on the transcriptional expression of the responsive factor JERF3 and stress-responsive genes (POD, PR1, CHI, and GLU) under different salinity levels. Different transcriptional levels were recorded in response to the individual, dual, or triple treatments. All the applied biotic and abiotic stresses triggered the transcriptional expression of the tested genes when individually applied, but they showed different influences varying from synergistic to antagonistic when applied in combinations. The salinity stress had the strongest effect when applied in combination with the biotic stress and/or mycorrhizal colonization, especially at high concentrations. Moreover, the salinity level differentially affects the banana responses under combined stresses and/or mycorrhizal colonization in addition, the mycorrhizal colonization of banana plantlets improved their growth, photosynthesis, and nutrient uptake, as well as greatly alleviated the detrimental effects of salt and infection stresses. In general, the obtained results indicated that the responses of banana plantlets under the combined stresses are more complicated and differed from those under the individual stresses depending on the crosstalks between the signaling pathways.
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Affiliation(s)
- Younes M. Rashad
- Plant Protection and Biomolecular Diagnosis Department, Arid Lands Cultivation Research Institute, City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, Egypt
- *Correspondence: Younes M. Rashad,
| | - Waleed M. E. Fekry
- Plant Production Department, Arid Lands Cultivation Research Institute, City of Scientific Research and Technological Applications (SRTA-City), Alexandria, Egypt
| | - Mohamed M. Sleem
- Plant Protection and Biomolecular Diagnosis Department, Arid Lands Cultivation Research Institute, City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, Egypt
| | - Nahla T. Elazab
- Botany Department, Faculty of Science, Mansoura University, Mansoura, Egypt
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