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Cui D, Lu H, Tang C, Li J, A X, Yu T, Ma X, Zhang E, Wang Y, Cao G, Xu F, Qiao Y, Dai L, Li R, Tian S, Koh H, Han L. Genomic analyses reveal selection footprints in rice landraces grown under on-farm conservation conditions during a short-term period of domestication. Evol Appl 2020; 13:290-302. [PMID: 31993077 PMCID: PMC6976955 DOI: 10.1111/eva.12866] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 08/26/2019] [Accepted: 08/28/2019] [Indexed: 12/22/2022] Open
Abstract
Traditional rice landraces grown under on-farm conservation conditions by indigenous farmers are extremely important for future crop improvement. However, little is known about how the natural selection and agriculture practices of indigenous farmers interact to shape and change the population genetics of rice landraces grown under on-farm conservation conditions during the domestication. In this study, we sequenced DNA from 108 core on-farm conserved rice landraces collected from the ethnic minority regions of Yunnan, China, including 56 accessions collected in 1980 and 52 accessions collected in 2007 and obtained 2,771,245 of credible SNPs. Our findings show that most genetic diversity was retained during the 27 years of domestication by on-farm conservation. However, SNPs with marked allele frequency differences were found in some genome regions, particularly enriched in genic regions, indicating changes in genic regions may have played a much more prominent role in the short-term domestication of 27 years. We identified 186 and 183 potential selective-sweep regions in the indica and japonica genomes, respectively. We propose that on-farm conserved rice landraces during the short-term domestication had a highly polygenic basis with many loci responding to selection rather than a few loci with critical changes in response to selection. Moreover, loci affecting important agronomic traits and biotic or abiotic stress responses have been particularly targeted in selection. A genome-wide association study identified 90 significant signals for six traits, 13 of which were in regions of selective sweeps. Moreover, we observed a number of significant and interesting associations between loci and environmental factors, which implies adaptation to local environment. Our results provide insights into short-term evolutionary processes and shed light on the underlying mechanisms of on-farm conservation.
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Affiliation(s)
- Di Cui
- National Key Facility for Crop Gene Resources and Genetic ImprovementInstitute of Crop SciencesChinese Academy of Agricultural SciencesBeijingChina
- Department of Plant Science, Plant Genomics and Breeding Institute of Agriculture and Life ScienceSeoul National UniversitySeoulKorea
| | - Hongfeng Lu
- Novogene Bioinformatics InstituteBeijingChina
| | - Cuifeng Tang
- Institute of Biotech and Germplasm ResourcesYunnan Academy of Agricultural SciencesKunmingYunnanChina
| | - Jinmei Li
- National Key Facility for Crop Gene Resources and Genetic ImprovementInstitute of Crop SciencesChinese Academy of Agricultural SciencesBeijingChina
| | - Xinxiang A
- Institute of Biotech and Germplasm ResourcesYunnan Academy of Agricultural SciencesKunmingYunnanChina
| | - Tengqiong Yu
- Institute of Biotech and Germplasm ResourcesYunnan Academy of Agricultural SciencesKunmingYunnanChina
| | - Xiaoding Ma
- National Key Facility for Crop Gene Resources and Genetic ImprovementInstitute of Crop SciencesChinese Academy of Agricultural SciencesBeijingChina
| | - Enlai Zhang
- Institute of Biotech and Germplasm ResourcesYunnan Academy of Agricultural SciencesKunmingYunnanChina
| | - Yanjie Wang
- National Key Facility for Crop Gene Resources and Genetic ImprovementInstitute of Crop SciencesChinese Academy of Agricultural SciencesBeijingChina
| | - Guilan Cao
- National Key Facility for Crop Gene Resources and Genetic ImprovementInstitute of Crop SciencesChinese Academy of Agricultural SciencesBeijingChina
| | - Furong Xu
- Institute of Biotech and Germplasm ResourcesYunnan Academy of Agricultural SciencesKunmingYunnanChina
| | - Yongli Qiao
- National Key Facility for Crop Gene Resources and Genetic ImprovementInstitute of Crop SciencesChinese Academy of Agricultural SciencesBeijingChina
| | - Luyuan Dai
- Institute of Biotech and Germplasm ResourcesYunnan Academy of Agricultural SciencesKunmingYunnanChina
| | - Ruiqiang Li
- Novogene Bioinformatics InstituteBeijingChina
| | - Shilin Tian
- Novogene Bioinformatics InstituteBeijingChina
| | - Hee‐Jong Koh
- Department of Plant Science, Plant Genomics and Breeding Institute of Agriculture and Life ScienceSeoul National UniversitySeoulKorea
| | - Longzhi Han
- National Key Facility for Crop Gene Resources and Genetic ImprovementInstitute of Crop SciencesChinese Academy of Agricultural SciencesBeijingChina
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Zhang Z, Yang Z, Fahad S, Zhang T, Xu W, Cui K, Peng S, Huang J. A hot-blast warming facility for simulating global warming in low-stature crop systems and its application case to assess elevated temperature effects on rice in Central China. PLANT METHODS 2020; 16:57. [PMID: 32346388 PMCID: PMC7181580 DOI: 10.1186/s13007-020-00598-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Accepted: 04/07/2020] [Indexed: 05/05/2023]
Abstract
BACKGROUND To study the impact of climate warming on crops, it is crucial to have a warming equipment suitable for their field environment. A facility is needed that can provide suitable combinations of different temperatures at reasonable cost for large plots. RESULTS Here, an additional field warming facility option named the hot-blast warming facility (HBWF), which comprised heaters, blowers, wind breaks, and a control board was developed. An application case based on HBWF was carried out to assess elevated temperature effects on rice in Central China during 2015 and 2016. We tested four elevated temperature treatments on four rice cultivars under paddy field conditions and measured yield and its components. Heating convection air directly, the facility could increase the temperature of the rice canopy up to 1-2 °C, which could properly simulate global warming. Considering the costs, the HBWF reduced the operating costs because of its relatively lower power consumption (0.164 kW/m2), which was 80% lower than that of Free Air Temperature Increase. Our results demonstrate that the HBWF could build a 25 m2 homogeneous heating area and had little effect on the relative humidity under a paddy field environment. Warming treatments significantly reduced the grain yield by 4.4-22.7% in 2015, and 30.8-61.9% in 2016, compared to the control. The main contribution to the significant decrease of the grain yields was the decrease in seed setting rate. Moreover, a reduction of 1000-grain weight led to the decline in grain yield. The increasing ranges of the temperature simulated by HBWF were stable in different years, however, whether the elevated treatments demonstrated significant difference on rice growth mainly decided by the basic atmospheric temperature (as the control) during the growth period. CONCLUSIONS The new warming facility is suitable for field trials to assess elevated temperature combinations and provides an extra equipment option for use in elevated temperature research in the future.
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Affiliation(s)
- Zuolin Zhang
- National Key Laboratory of Crop Genetic Improvement, MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 Hubei China
| | - Zhiyuan Yang
- National Key Laboratory of Crop Genetic Improvement, MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 Hubei China
| | - Shah Fahad
- National Key Laboratory of Crop Genetic Improvement, MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 Hubei China
- Department of Agriculture, University of Swabi, Khyber Pakhtunkhwa, Pakistan
| | - Tong Zhang
- National Key Laboratory of Crop Genetic Improvement, MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 Hubei China
| | - Wenhao Xu
- National Key Laboratory of Crop Genetic Improvement, MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 Hubei China
| | - Kehui Cui
- National Key Laboratory of Crop Genetic Improvement, MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 Hubei China
| | - Shaobing Peng
- National Key Laboratory of Crop Genetic Improvement, MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 Hubei China
| | - Jianliang Huang
- National Key Laboratory of Crop Genetic Improvement, MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 Hubei China
- Hubei Collaborative Innovation Center for Grain Industry, Yangtze University, Hubei, China
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Jasmonates-the Master Regulator of Rice Development, Adaptation and Defense. PLANTS 2019; 8:plants8090339. [PMID: 31505882 PMCID: PMC6784130 DOI: 10.3390/plants8090339] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 08/29/2019] [Accepted: 08/29/2019] [Indexed: 12/19/2022]
Abstract
Rice is one of the most important food crops worldwide, as well as the model plant in molecular studies on the cereals group. Many different biotic and abiotic agents often limit rice production and threaten food security. Understanding the molecular mechanism, by which the rice plant reacts and resists these constraints, is the key to improving rice production to meet the demand of an increasing population. The phytohormone jasmonic acid (JA) and related compounds, collectively called jasmonates, are key regulators in plant growth and development. They are also one of the central players in plant immunity against biotic attacks and adaptation to unfavorable environmental conditions. Here, we review the most recent knowledge about jasmonates signaling in the rice crop model. We highlight the functions of jasmonates signaling in many adaptive responses, and also in rice growth and development processes. We also draw special attention to different signaling modules that are controlled by jasmonates in rice.
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Hassini I, Rios JJ, Garcia-Ibañez P, Baenas N, Carvajal M, Moreno DA. Comparative effect of elicitors on the physiology and secondary metabolites in broccoli plants. JOURNAL OF PLANT PHYSIOLOGY 2019; 239:1-9. [PMID: 31177025 DOI: 10.1016/j.jplph.2019.05.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 04/24/2019] [Accepted: 05/13/2019] [Indexed: 06/09/2023]
Abstract
Elicitation is an economic and sustainable technique for increasing the content of secondary metabolites, mainly bioactive compounds, in plants grown for better human nutrition. The aim of this study was to compare the physiological responses (water relations and mineral nutrition) and the enrichment in glucosinolates (GLSs) and phenolic compounds of broccoli plants (Brassica oleracea L. var. italica) receiving different elicitation treatments. The treatments involved the priming of seeds with KCl and the exposure of plants to elicitors, including K2SO4 and NaCl solutions and foliar sprays of methyl jasmonate (MeJA), salicylic acid (SA), and methionine (Met). The physiological response of the plants in terms of root hydraulic conductance was improved by priming with KCl and elicitation with MeJA or Met. Foliar application of Met significantly increased the plant biomass and enhanced mineral nutrition. In general, all treatments increased the accumulation of indole GLSs, but K2SO4 and MeJA gave the best response and MeJA also favored the formation of a newly described compound, cinnamic-GLS, in the plants. Also, the use of Met and SA as elicitors and the supply of K2SO4 increased the abundance of phenolic compounds; K2SO4 also enhanced growth but did not alter the water relations or the accumulation of mineral nutrients. Therefore, although the response to elicitation was positive, with an increased content of bioactive compounds, regulation of the water relations and of the mineral status of the broccoli plants was critical to maintain the yield.
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Affiliation(s)
- Ismahen Hassini
- Department of Life Sciences. Faculty of Sciences of Bizerte. University of Carthage 7021 Zarzouna, Tunisia
| | - Juan J Rios
- Group of Aquaporins. Plant Nutrition Department, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC). Campus Universitario de Espinardo - 25, 30100 Murcia, Spain
| | - Paula Garcia-Ibañez
- Group of Aquaporins. Plant Nutrition Department, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC). Campus Universitario de Espinardo - 25, 30100 Murcia, Spain
| | - Nieves Baenas
- Phytochemistry and Healthy Foods Lab. Food Science and Technology Department, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC). Campus Universitario de Espinardo - 25, 30100 Murcia, Spain
| | - Micaela Carvajal
- Group of Aquaporins. Plant Nutrition Department, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC). Campus Universitario de Espinardo - 25, 30100 Murcia, Spain.
| | - Diego A Moreno
- Phytochemistry and Healthy Foods Lab. Food Science and Technology Department, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC). Campus Universitario de Espinardo - 25, 30100 Murcia, Spain
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55
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Jasmonates: Mechanisms and functions in abiotic stress tolerance of plants. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2019. [DOI: 10.1016/j.bcab.2019.101210] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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56
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Lee SH, Zwiazek JJ. Regulation of water transport in Arabidopsis by methyl jasmonate. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 139:540-547. [PMID: 31029027 DOI: 10.1016/j.plaphy.2019.04.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 03/19/2019] [Accepted: 04/17/2019] [Indexed: 06/09/2023]
Abstract
Following a stress event, jasmonate-dependent signaling pathway triggers a shift from growth to defense responses that are accompanied by the cessation of growth in many plants. However, the processes leading to this growth inhibition remain obscure. In this study, we provide evidence for a rapid inhibition of cell hydraulic conductivity (Lp) by methyl jasmonate (MeJA) in the roots of wild-type Arabidopsis within 0.5 h of 20 and 50 μM MeJA treatments. We also demonstrate that MeJA did not affect Lp in fad3-2 and fad7-2 Arabidopsis mutants that are deficient in jasmonate precursor, linolenic acid. The reductions of Lp in wild-type plants were accompanied by the down-regulation of several plasma membrane intrinsic protein (PIP) isoforms, and dephosphorylation. Treatments with HgCl2 did not further reduce Lp in the wild-type plants, but significantly reduced Lp in the fad3-2 and fad7-2 that had been first treated with MeJA. Continuous prolonged exposure to exogenous 50 μM MeJA inhibited the relative growth rates (RGR) of shoots and net photosynthesis (Pn) in the Arabidopsis wild-type and fad7-2 plants, but had no effect on the RGR of roots. The results demonstrated that a reduction of aquaporin (AQP)-mediated water transport was the initial target of MeJA exposure, and may contribute to the processes of growth inhibition by MeJA.
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Affiliation(s)
- Seong Hee Lee
- Department of Renewable Resources, University of Alberta, 442 Earth Sciences Bldg., T6G 2E3, Edmonton, AB, Canada
| | - Janusz J Zwiazek
- Department of Renewable Resources, University of Alberta, 442 Earth Sciences Bldg., T6G 2E3, Edmonton, AB, Canada.
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Yu J, Jiang M, Guo C. Crop Pollen Development under Drought: From the Phenotype to the Mechanism. Int J Mol Sci 2019; 20:E1550. [PMID: 30925673 PMCID: PMC6479728 DOI: 10.3390/ijms20071550] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 03/22/2019] [Accepted: 03/23/2019] [Indexed: 12/13/2022] Open
Abstract
Drought stress induced pollen sterility is a harmful factor that reduces crop yield worldwide. During the reproductive process, the meiotic stage and the mitotic stage in anthers are both highly vulnerable to water deficiency. Drought at these stages causes pollen sterility by affecting the nature and structure of the anthers, including the degeneration of some meiocytes, disorientated microspores, an expanded middle layer and abnormal vacuolizated tapeta. The homeostasis of the internal environment is imbalanced in drought-treated anthers, involving the decreases of gibberellic acid (GA) and auxin, and the increases of abscisic acid (ABA), jasmonic acid (JA) and reactive oxygen species (ROS). Changes in carbohydrate availability, metabolism and distribution may be involved in the effects of drought stress at the reproductive stages. Here, we summarize the molecular regulatory mechanism of crop pollen development under drought stresses. The meiosis-related genes, sugar transporter genes, GA and ABA pathway genes and ROS-related genes may be altered in their expression in anthers to repair the drought-induced injures. It could also be that some drought-responsive genes, mainly expressed in the anther, regulate the expression of anther-related genes to improve both drought tolerance and anther development. A deepened understanding of the molecular regulatory mechanism of pollen development under stress will be beneficial for breeding drought-tolerant crops with high and stable yield under drought conditions.
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Affiliation(s)
- Jing Yu
- State Key Laboratory of Subtropical Silviculture, School of Agriculture and Food Sciences, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China.
| | - Mengyuan Jiang
- State Key Laboratory of Subtropical Silviculture, School of Agriculture and Food Sciences, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China.
| | - Changkui Guo
- State Key Laboratory of Subtropical Silviculture, School of Agriculture and Food Sciences, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China.
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58
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Avramova Z. Defence-related priming and responses to recurring drought: Two manifestations of plant transcriptional memory mediated by the ABA and JA signalling pathways. PLANT, CELL & ENVIRONMENT 2019; 42:983-997. [PMID: 30299553 DOI: 10.1111/pce.13458] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Revised: 09/26/2018] [Accepted: 10/02/2018] [Indexed: 05/20/2023]
Abstract
Collective evidence from agricultural practices and from scientific research has demonstrated that plants can alter their phenotypic responses to repeated biotic and abiotic stresses or their elicitors. A coordinated reaction at the organismal, cellular, and genome levels has suggested that plants can "remember" an earlier stress and modify their future responses, accordingly. Stress memory may increase a plant's survival chances by improving its tolerance/avoidance abilities and may provide a mechanism for acclimation and adaptation. Understanding the mechanisms that regulate plant stress memory is not only an intellectually challenging topic but has important implications for agricultural practices as well. Here, I focus exclusively on specific aspects of the transcription memory in response to recurring dehydration stresses and the memory-type responses to insect damage in a process known as "priming." The questions discussed are (a) whether/how the two memory phenomena are connected at the level of transcriptional regulation; (b) how differential transcription is achieved mechanistically under a repeated stress; and (c) whether similar molecular and/or epigenetic mechanisms are involved. Possible biological relevance of transcriptional stress memory and its preservation in plant evolution are also discussed.
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Affiliation(s)
- Zoya Avramova
- School of Biological Sciences, UNL, Lincoln, Nebraska
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59
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Wu X, Ding C, Baerson SR, Lian F, Lin X, Zhang L, Wu C, Hwang SY, Zeng R, Song Y. The roles of jasmonate signalling in nitrogen uptake and allocation in rice (Oryza sativa L.). PLANT, CELL & ENVIRONMENT 2019; 42:659-672. [PMID: 30251262 DOI: 10.1111/pce.13451] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 09/18/2018] [Indexed: 05/14/2023]
Abstract
Herbivore damage by chewing insects activates jasmonate (JA) signalling that can elicit systemic defense responses in rice. Few details are known, however, concerning the mechanism, whereby JA signalling modulates nutrient status in rice in response to herbivory. (15 NH4 )2 SO4 labelling experiments, proteomic surveys, and RT-qPCR analyses were used to identify the roles of JA signalling in nitrogen (N) uptake and allocation in rice plants. Exogenous applications of methyl jasmonate (MeJA) to rice seedlings led to significantly reduced N uptake in roots and reduced translocation of recently-absorbed 15 N from roots to leaves, likely occurring as a result of down-regulation of glutamine synthetase cytosolic isozyme 1-2 and ferredoxin-nitrite reductase. Shoot MeJA treatment resulted in a remobilization of endogenous unlabelled 14 N from leaves to roots, and root MeJA treatment also increased 14 N accumulation in roots but did not affect 14 N accumulation in leaves of rice. Additionally, proteomic and RT-qPCR experiments showed that JA-mediated plastid disassembly and dehydrogenases GDH2 up-regulation contribute to N release in leaves to support production of defensive proteins/compounds under N-limited condition. Collectively, our results indicate that JA signalling mediates large-scale systemic changes in N uptake and allocation in rice plants.
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Affiliation(s)
- Xiaoying Wu
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, School of Life Sciences, Huzhou University, Huzhou, China
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Chaohui Ding
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou, China
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou, China
| | - Scott R Baerson
- United States Department of Agriculture-Agricultural Research Service, Natural Products Utilization Research Unit, Oxford, Mississippi
| | - Fazhuo Lian
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Xianhui Lin
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Liqin Zhang
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, School of Life Sciences, Huzhou University, Huzhou, China
| | - Choufei Wu
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, School of Life Sciences, Huzhou University, Huzhou, China
| | - Shaw-Yhi Hwang
- Department of Entomology, National Chung Hsing University, Taichung, Taiwan
| | - Rensen Zeng
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yuanyuan Song
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou, China
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60
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Selenium Distribution and Translocation in Rice (Oryza sativa L.) under Different Naturally Seleniferous Soils. SUSTAINABILITY 2019. [DOI: 10.3390/su11020520] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Selenium (Se) accumulation in plant foods may be providing dietary Se to minimize the health problems related to Se deficiency. In this study, rice plants were cultivated in different naturally seleniferous soils (0.5–1.5 mg Se kg−1). Se concentration in rice plant tissues was analysed, and the distribution and translocation of Se in rice were also studied. The effect of exogenous Se on yield and Se concentration in rice grain was also investigated by spraying Na2SeO3 (15 mg L−1, 15 g ha−1). Results show that Se concentration in root, straw and grain of rice was increased with increased concentrations of Se in seleniferous soils. The root accumulated higher Se than straw and grain under the same naturally seleniferous soil. Spraying Se significantly increased Se concentration in grain, hull, brown rice and polished rice compared with spraying water. Se concentration in the grain fractions was in the following order: Bran > brown rice > whole grain > polished rice > hull. About 13.7% Se in wholegrain was discarded by milling process if about 6.9% of it was polished as bran. Se-enriched rice could be produced in naturally seleniferous soils with Se concentration from 0.5 to 1.0 mg kg−1, and this polished rice would provide enough Se (60–80 μg day−1) to satisfy the human requirement. Therefore, naturally seleniferous soils may be an effective way to produce Se-enriched rice without spraying Se fertilizer, which will be more economically feasible and environmentally friendly for without exogenous Se added to the soils or plants. However, the polished rice and brown rice, produced by spraying Na2SeO3 (15 g ha−1) or grown in soil with total Se upto 1.5 mg kg−1 was not suitable for daily human consumption, unless diluted with Se-deficient rice to meet the standard (≤0.3 mg Se kg−1). This study imparted a better understanding of the utilization of seleniferous soils and Se-enriched rice for human health and food safety.
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61
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Chen J, Qi T, Hu Z, Fan X, Zhu L, Iqbal MF, Yin X, Xu G, Fan X. OsNAR2.1 Positively Regulates Drought Tolerance and Grain Yield Under Drought Stress Conditions in Rice. FRONTIERS IN PLANT SCIENCE 2019; 10:197. [PMID: 30846998 PMCID: PMC6393350 DOI: 10.3389/fpls.2019.00197] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Accepted: 02/05/2019] [Indexed: 05/04/2023]
Abstract
Drought is an important environmental factor that severely restricts crop production. The high-affinity nitrate transporter partner protein OsNAR2.1 plays an essential role in nitrate absorption and translocation in rice. Our results suggest that OsNAR2.1 expression is markedly induced by water deficit. After drought stress conditions and irrigation, compared with wild-type (WT), the survival rate was significantly improved in OsNAR2.1 over-expression lines and decreased in OsNAR2.1 RNAi lines. The survival rate of Wuyunjing7 (WYJ), OsNRT2.1 over-expression lines and OsNRT2.3a over-expression lines was not significantly different. Compared with WT, overexpression of OsNAR2.1 could significantly increase nitrogen uptake in rice, and OsNAR2.1 RNAi could significantly reduce nitrogen uptake. Under drought conditions, the expression of OsNAC10, OsSNAC1, OsDREB2a, and OsAP37 was significantly reduced in OsNAR2.1 RNAi lines and increased substantially in OsNAR2.1 over-expression lines. Also, the chlorophyll content, relative water content, photosynthetic rate and water use efficiency were decreased considerably in OsNAR2.1 RNAi lines and increased significantly in OsNAR2.1 over-expression lines under drought conditions. Finally, compared to WT, grain yield increased by about 9.1 and 26.6%, in OsNAR2.1 over-expression lines under full and limited irrigation conditions, respectively. These results indicate that OsNAR2.1 regulates the response to drought stress in rice and increases drought tolerance.
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Affiliation(s)
- Jingguang Chen
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOA Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Nanjing Agricultural University, Nanjing, China
- CAAS-IRRI Joint Laboratory for Genomics-Assisted Germplasm Enhancement, Agricultural Genomics Institute in Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
| | - Tiantian Qi
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOA Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Nanjing Agricultural University, Nanjing, China
| | - Zhi Hu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOA Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Nanjing Agricultural University, Nanjing, China
| | - Xiaoru Fan
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOA Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Nanjing Agricultural University, Nanjing, China
| | - Longlong Zhu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOA Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Nanjing Agricultural University, Nanjing, China
| | - Muhammad Faseeh Iqbal
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOA Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Nanjing Agricultural University, Nanjing, China
| | - Xiaoming Yin
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOA Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Nanjing Agricultural University, Nanjing, China
| | - Guohua Xu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOA Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Nanjing Agricultural University, Nanjing, China
| | - Xiaorong Fan
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOA Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Nanjing Agricultural University, Nanjing, China
- *Correspondence: Xiaorong Fan,
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Pigolev AV, Miroshnichenko DN, Pushin AS, Terentyev VV, Boutanayev AM, Dolgov SV, Savchenko TV. Overexpression of Arabidopsis OPR3 in Hexaploid Wheat ( Triticum aestivum L.) Alters Plant Development and Freezing Tolerance. Int J Mol Sci 2018; 19:E3989. [PMID: 30544968 PMCID: PMC6320827 DOI: 10.3390/ijms19123989] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 12/06/2018] [Accepted: 12/08/2018] [Indexed: 01/09/2023] Open
Abstract
Jasmonates are plant hormones that are involved in the regulation of different aspects of plant life, wherein their functions and molecular mechanisms of action in wheat are still poorly studied. With the aim of gaining more insights into the role of jasmonic acid (JA) in wheat growth, development, and responses to environmental stresses, we have generated transgenic bread wheat plants overexpressing Arabidopsis 12-OXOPHYTODIENOATE REDUCTASE 3 (AtOPR3), one of the key genes of the JA biosynthesis pathway. Analysis of transgenic plants showed that AtOPR3 overexpression affects wheat development, including germination, growth, flowering time, senescence, and alters tolerance to environmental stresses. Transgenic wheat plants with high AtOPR3 expression levels have increased basal levels of JA, and up-regulated expression of ALLENE OXIDE SYNTHASE, a jasmonate biosynthesis pathway gene that is known to be regulated by a positive feedback loop that maintains and boosts JA levels. Transgenic wheat plants with high AtOPR3 expression levels are characterized by delayed germination, slower growth, late flowering and senescence, and improved tolerance to short-term freezing. The work demonstrates that genetic modification of the jasmonate pathway is a suitable tool for the modulation of developmental traits and stress responses in wheat.
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Affiliation(s)
- Alexey V Pigolev
- Institute of Basic Biological Problems RAS, Pushchino 142290, Russia.
| | - Dmitry N Miroshnichenko
- Institute of Basic Biological Problems RAS, Pushchino 142290, Russia.
- Branch of Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry RAS, Pushchino 142290, Russia.
| | - Alexander S Pushin
- Institute of Basic Biological Problems RAS, Pushchino 142290, Russia.
- Branch of Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry RAS, Pushchino 142290, Russia.
| | | | | | - Sergey V Dolgov
- Branch of Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry RAS, Pushchino 142290, Russia.
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63
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Bahieldin A, Atef A, Edris S, Gadalla NO, Al-Matary M, Al-Kordy MA, Ramadan AM, Bafeel S, Alharbi MG, Al-Quwaie DAH, Sabir JSM, Al-Zahrani HS, Nasr ME, El-Domyati FM. Stepwise response of MeJA-induced genes and pathways in leaves of C. roseus. C R Biol 2018; 341:411-420. [PMID: 30472986 DOI: 10.1016/j.crvi.2018.10.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 10/01/2018] [Accepted: 10/01/2018] [Indexed: 12/01/2022]
Abstract
Catharanthus roseus is a perennial herb known for the production of important terpenoid indole alkaloids (TIAs) in addition to a variety of phenolic compounds. The goal of the present work was to detect the prolonged effects of MeJA (6 uM) treatment across time (up to 24 days) in order to detect the stepwise response of MeJA-induced genes and pathways in leaves of C. rouses. Prolonged exposure of plants to MeJA (6 uM) treatment for different time points (6, 12 and 24 days) indicated that genes in the indole alkaloid biosynthesis pathway and upstream pathways were triggered earlier (e.g., 6 days) than those in the anthocyanin biosynthesis pathway and its upstream pathways (e.g., 12 days). Three enzymes, e.g., T16H, OMT, and D4H, in the six-step vindoline biosynthesis and two enzymes, e.g., TDC and STR, acting consecutively in the conversion of tryptophan to strictosidine, were activated after 6 days of MeJA treatment. Two other key enzymes, e.g., TRP and CYP72A1, acting concurrently upstream of the TIA biosynthesis pathway were upregulated after 6 days. The genes encoding TDC and STR might concurrently act as a master switch of the TIA pathway towards the production of the indole alkaloids. On the other hand, we speculate that the gene encoding PAL enzyme also acts as the master switch of phenylpropanoid biosynthesis and the downstream flavonoid biosynthesis and anthocyanin biosynthesis pathways towards the production of several phenolic compounds. PAL and the downstream enzymes were activated 12 days after treatment. Cluster analysis confirmed the concordant activities of the flower- and silique-specific bHLH25 transcription factor and the key enzyme in the TIA biosynthesis pathway, e.g., STR. Due to the stepwise response of the two sets of pathways, we speculate that enzymes activated earlier likely make TIA biosynthesis pathway a more favourable target in C. roseus than anthocyanin biosynthesis pathway.
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Affiliation(s)
- Ahmed Bahieldin
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University (KAU), P.O. Box 80141, 21589 Jeddah, Saudi Arabia.
| | - Ahmed Atef
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University (KAU), P.O. Box 80141, 21589 Jeddah, Saudi Arabia
| | - Sherif Edris
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University (KAU), P.O. Box 80141, 21589 Jeddah, Saudi Arabia; Department of Genetics, Faculty of Agriculture, Ain Shams University, Cairo, Egypt; Princess Al-Jawhara Al-Brahim Centre of Excellence in Research of Hereditary Disorders (PACER-HD), Faculty of Medicine, King Abdulaziz University (KAU), Jeddah, Saudi Arabia
| | - Nour O Gadalla
- Department of Arid Land Agriculture, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, Jeddah, Saudi Arabia; Genetics and Cytology Department, Genetic Engineering and Biotechnology Division, National Research Center, Dokki, Egypt
| | - Mohammed Al-Matary
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University (KAU), P.O. Box 80141, 21589 Jeddah, Saudi Arabia
| | - Magdy A Al-Kordy
- Genetics and Cytology Department, Genetic Engineering and Biotechnology Division, National Research Center, Dokki, Egypt
| | - Ahmed M Ramadan
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University (KAU), P.O. Box 80141, 21589 Jeddah, Saudi Arabia; Agricultural Genetic Engineering Research Institute (AGERI), Agriculture Research Center (ARC), Giza, Egypt
| | - Sameera Bafeel
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University (KAU), P.O. Box 80141, 21589 Jeddah, Saudi Arabia
| | - Mona G Alharbi
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University (KAU), P.O. Box 80141, 21589 Jeddah, Saudi Arabia
| | - Diana A H Al-Quwaie
- Department of Biological Sciences, Rabigh College of Science and Arts, King Abdulaziz University (KAU), Rabigh, Saudi Arabia
| | - Jamal S M Sabir
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University (KAU), P.O. Box 80141, 21589 Jeddah, Saudi Arabia
| | - Hassan S Al-Zahrani
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University (KAU), P.O. Box 80141, 21589 Jeddah, Saudi Arabia
| | - Mahmoud E Nasr
- Faculty of Agriculture, Menofia University, Shebeen Elkom, Egypt
| | - Fotouh M El-Domyati
- Department of Genetics, Faculty of Agriculture, Ain Shams University, Cairo, Egypt
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64
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Bai JF, Wang YK, Wang P, Yuan SH, Gao JG, Duan WJ, Wang N, Zhang FT, Zhang WJ, Qin MY, Zhao CP, Zhang LP. Genome-wide identification and analysis of the COI gene family in wheat (Triticum aestivum L.). BMC Genomics 2018; 19:754. [PMID: 30332983 PMCID: PMC6192174 DOI: 10.1186/s12864-018-5116-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 09/26/2018] [Indexed: 12/18/2022] Open
Abstract
Background COI (CORONATINE INSENSITIVE), an F-box component of the Skp1-Cullin-F-box protein (SCFCOI1) ubiquitin E3 ligase, plays important roles in the regulation of plant growth and development. Recent studies have shown that COIs are involved in pollen fertility. In this study, we identified and characterized COI genes in the wheat genome and analyzed expression patterns under abiotic stress. Results A total of 18 COI candidate sequences for 8 members of COI gene family were isolated in wheat (Triticum aestivum L.). Phylogenetic and structural analyses showed that these COI genes could be divided into seven distinct subfamilies. The COI genes showed high expression in stamens and glumes. The qRT-PCR results revealed that wheat COIs were involved in several abiotic stress responses and anther/glume dehiscence in the photoperiod-temperature sensitive genic male sterile (PTGMS) wheat line BS366. Conclusions The structural characteristics and expression patterns of the COI gene family in wheat as well as the stress-responsive and differential tissue-specific expression profiles of each TaCOI gene were examined in PTGMS wheat line BS366. In addition, we examined SA- and MeJA-induced gene expression in the wheat anther and glume to investigate the role of COI in the JA signaling pathway, involved in the regulation of abnormal anther dehiscence in the PTGMS wheat line. The results of this study contribute novel and detailed information about the TaCOI gene family in wheat and could be used as a benchmark for future studies of the molecular mechanisms of PTGMS in other crops. Electronic supplementary material The online version of this article (10.1186/s12864-018-5116-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jian-Fang Bai
- Beijing Engineering and Technique Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry, Beijing, 100097, China.,The Municipal Key Laboratory of Molecular Genetic of Hybrid Wheat, Beijing, 10097, China
| | - Yu-Kun Wang
- Beijing Engineering and Technique Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry, Beijing, 100097, China.,The Municipal Key Laboratory of Molecular Genetic of Hybrid Wheat, Beijing, 10097, China.,Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, 630-0192, Japan
| | - Peng Wang
- Beijing Engineering and Technique Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry, Beijing, 100097, China.,The Municipal Key Laboratory of Molecular Genetic of Hybrid Wheat, Beijing, 10097, China
| | - Shao-Hua Yuan
- Beijing Engineering and Technique Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry, Beijing, 100097, China.,The Municipal Key Laboratory of Molecular Genetic of Hybrid Wheat, Beijing, 10097, China
| | - Jian-Gang Gao
- Beijing Engineering and Technique Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry, Beijing, 100097, China.,The Municipal Key Laboratory of Molecular Genetic of Hybrid Wheat, Beijing, 10097, China
| | - Wen-Jing Duan
- Beijing Engineering and Technique Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry, Beijing, 100097, China.,The Municipal Key Laboratory of Molecular Genetic of Hybrid Wheat, Beijing, 10097, China
| | - Na Wang
- Beijing Engineering and Technique Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry, Beijing, 100097, China.,The Municipal Key Laboratory of Molecular Genetic of Hybrid Wheat, Beijing, 10097, China
| | - Feng-Ting Zhang
- Beijing Engineering and Technique Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry, Beijing, 100097, China.,The Municipal Key Laboratory of Molecular Genetic of Hybrid Wheat, Beijing, 10097, China
| | - Wen-Jie Zhang
- Beijing Engineering and Technique Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry, Beijing, 100097, China.,The Municipal Key Laboratory of Molecular Genetic of Hybrid Wheat, Beijing, 10097, China
| | - Meng-Ying Qin
- Beijing Engineering and Technique Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry, Beijing, 100097, China.,The Municipal Key Laboratory of Molecular Genetic of Hybrid Wheat, Beijing, 10097, China
| | - Chang-Ping Zhao
- Beijing Engineering and Technique Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry, Beijing, 100097, China. .,The Municipal Key Laboratory of Molecular Genetic of Hybrid Wheat, Beijing, 10097, China.
| | - Li-Ping Zhang
- Beijing Engineering and Technique Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry, Beijing, 100097, China. .,The Municipal Key Laboratory of Molecular Genetic of Hybrid Wheat, Beijing, 10097, China.
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65
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Fard EM, Bakhshi B, Farsi M, Kakhki AM, Nikpay N, Ebrahimi MA, Mardi M, Salekdeh GH. MicroRNAs regulate the main events in rice drought stress response by manipulating the water supply to shoots. MOLECULAR BIOSYSTEMS 2018; 13:2289-2302. [PMID: 28872648 DOI: 10.1039/c7mb00298j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
MicroRNAs (miRNAs) are small endogenous regulatory RNAs that are involved in a variety of biological processes related to proliferation, development, and response to biotic and abiotic stresses. miRNA profiles of rice (Oryza sativa L. cv. IR64.) leaves in a partial root zone drying (PRD) system were analysed using a high-throughput sequencing approach to identify miRNAs associated with drought signalling. The treatments performed in this study were as follows: well-watered ("wet" roots, WW), wherein both halves of the pot were watered daily; drought ("dry" roots, DD), wherein water was withheld from both halves of the pot; and well-watered/drought ("wet" and "dry" roots, WD), wherein one half of each pot was watered daily, the same as in WW, and water was withheld from the other part, the same as in DD. High-throughput sequencing enabled us to detect novel miRNAs and study the differential expression of known miRNAs. A total of 209 novel miRNAs were detected in this study. Differential miRNA profiling of the DD, WD and WW conditions showed differential expression of 159 miRNAs, among which 83, 44 and 32 miRNAs showed differential expression under both DD and WD conditions. The detection of putative targets of the differentially expressed miRNAs and investigation of their functions showed that most of these genes encode transcription factors involved in growth and development, leaf morphology, regulation of hormonal homeostasis, and stress response. The most important differences between the DD and WD conditions involved regulation of the levels of hormones such as auxin, cytokinin, abscisic acid, and jasmonic acid and also regulation of phosphor homeostasis. Overall, differentially expressed miRNAs under WD conditions were found to differ from those under DD conditions, with such differences playing a role in adaptation and inducing the normal condition. The mechanisms involved in regulating hormonal homeostasis and involved in energy production and consumption were found to be the most important regulatory pathways distinguishing the DD and WD conditions.
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Affiliation(s)
- Ehsan Mohseni Fard
- Department of Systems Biology, Agricultural Biotechnology Research Institute of Iran, Agricultural Research, Education, and Extension Organization, Karaj, Tehran, Iran.
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Sánchez-Martín J, Canales FJ, Tweed JKS, Lee MRF, Rubiales D, Gómez-Cadenas A, Arbona V, Mur LAJ, Prats E. Fatty Acid Profile Changes During Gradual Soil Water Depletion in Oats Suggests a Role for Jasmonates in Coping With Drought. FRONTIERS IN PLANT SCIENCE 2018; 9:1077. [PMID: 30131815 PMCID: PMC6090161 DOI: 10.3389/fpls.2018.01077] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 07/03/2018] [Indexed: 05/06/2023]
Abstract
Although often investigated within the context of plant growth and development and/or seed composition, plant lipids have roles in responses to environment. To dissect changes in lipid and fatty acid composition linked to drought tolerance responses in oats, we performed a detailed profiling of (>90) different lipids classes during a time course of water stress. We used two oat cultivars, Flega and Patones previously characterized as susceptible and tolerant to drought, respectively. Significant differences in lipid classes (mono, di and triacylglycerols; [respectively MAG, DAG, and TAG] and free fatty acids [FFA]) and in their fatty acid (FA) composition was observed between cultivars upon drought stress. In Flega there was an increase of saturated FAs, in particular 16:0 in the DAG and TAG fractions. This led to significant lower values of the double bond index and polyunsaturated/saturated ratio in Flega compared with Patones. By contrast, Patones was characterized by the early induction of signaling-related lipids and fatty acids, such as DAGs and linolenic acid. Since the latter is a precursor of jasmonates, we investigated further changes of this signaling molecule. Targeted measurements of jasmonic acid (JA) and Ile-JA indicated early increases in the concentrations of these molecules in Patones upon drought stress whereas no changes were observed in Flega. Altogether, these data suggest a role for jasmonates and specific fatty acids in different lipid classes in coping with drought stress in oat.
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Affiliation(s)
- Javier Sánchez-Martín
- Institute of Sustainable Agriculture, Consejo Superior de Investigaciones Científicas (CSIC), Córdoba, Spain
| | - Francisco J. Canales
- Institute of Sustainable Agriculture, Consejo Superior de Investigaciones Científicas (CSIC), Córdoba, Spain
| | - John K. S. Tweed
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Aberystwyth, United Kingdom
| | - Michael R. F. Lee
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Aberystwyth, United Kingdom
| | - Diego Rubiales
- Institute of Sustainable Agriculture, Consejo Superior de Investigaciones Científicas (CSIC), Córdoba, Spain
| | - Aurelio Gómez-Cadenas
- Ecofisiologia i Biotecnologia, Departament de Ciències Agràries i del Medi Natural, Universitat Jaume I, Castellón de la Plana, Spain
| | - Vicent Arbona
- Ecofisiologia i Biotecnologia, Departament de Ciències Agràries i del Medi Natural, Universitat Jaume I, Castellón de la Plana, Spain
| | - Luis A. J. Mur
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Aberystwyth, United Kingdom
| | - Elena Prats
- Institute of Sustainable Agriculture, Consejo Superior de Investigaciones Científicas (CSIC), Córdoba, Spain
- *Correspondence: Elena Prats,
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Ma X, Zhang X, Zhao K, Li F, Li K, Ning L, He J, Xin Z, Yin D. Small RNA and Degradome Deep Sequencing Reveals the Roles of microRNAs in Seed Expansion in Peanut ( Arachis hypogaea L.). FRONTIERS IN PLANT SCIENCE 2018; 9:349. [PMID: 29662498 PMCID: PMC5890158 DOI: 10.3389/fpls.2018.00349] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Accepted: 03/02/2018] [Indexed: 05/22/2023]
Abstract
Seed expansion in peanut is a complex biological process involving many gene regulatory pathways. MicroRNAs (miRNAs) play important regulatory roles in plant growth and development, but little is known about their functions during seed expansion, or how they contribute to seed expansion in different peanut lines. We examined seed miRNA expression patterns at 15 and 35 days after flowering (DAF) in two peanut eighth-generation recombinant inbred lines (RIL8); 8106, a medium-pod variety, and 8107, a super-pod variety. Using high-throughput sequencing, we identified 1,082 miRNAs in developing peanut seeds including 434 novel miRNAs. We identified 316 differentially expressed miRNAs by comparing expression levels between the two peanut lines. Interestingly, 24 miRNAs showed contrasting patterns of expression in the two RILs, and 149 miRNAs were expressed predominantly in only one RIL at 35 DAF. Also, potential target genes for some conserved and novel miRNAs were identified by degradome sequencing; target genes were predicted to be involved in auxin mediated signaling pathways and cell division. We validated the expression patterns of some representative miRNAs and 12 target genes by qPCR, and found negative correlations between the expression level of miRNAs and their targets. miR156e, miR159b, miR160a, miR164a, miR166b, miR168a, miR171n, miR172c-5p, and miR319d and their corresponding target genes may play key roles in seed expansion in peanut. The results of our study also provide novel insights into the dynamic changes in miRNAs that occur during peanut seed development, and increase our understanding of miRNA function in seed expansion.
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Affiliation(s)
| | | | | | | | | | | | | | - Zeyu Xin
- *Correspondence: Dongmei Yin, Zeyu Xin,
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Huo X, Wu S, Zhu Z, Liu F, Fu Y, Cai H, Sun X, Gu P, Xie D, Tan L, Sun C. NOG1 increases grain production in rice. Nat Commun 2017; 8:1497. [PMID: 29133783 PMCID: PMC5684330 DOI: 10.1038/s41467-017-01501-8] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 09/22/2017] [Indexed: 11/09/2022] Open
Abstract
During rice domestication and improvement, increasing grain yield to meet human needs was the primary objective. Rice grain yield is a quantitative trait determined by multiple genes, but the molecular basis for increased grain yield is still unclear. Here, we show that NUMBER OF GRAINS 1 (NOG1), which encodes an enoyl-CoA hydratase/isomerase, increases the grain yield of rice by enhancing grain number per panicle without a negative effect on the number of panicles per plant or grain weight. NOG1 can significantly increase the grain yield of commercial high-yield varieties: introduction of NOG1 increases the grain yield by 25.8% in the NOG1-deficient rice cultivar Zhonghua 17, and overexpression of NOG1 can further increase the grain yield by 19.5% in the NOG1-containing variety Teqing. Interestingly, NOG1 plays a prominent role in increasing grain number, but does not change heading date or seed-setting rate. Our findings suggest that NOG1 could be used to increase rice production.
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Affiliation(s)
- Xing Huo
- State Key Laboratory of Plant Physiology and Biochemistry, China Agricultural University, Beijing, 100193, China
| | - Shuang Wu
- State Key Laboratory of Plant Physiology and Biochemistry, China Agricultural University, Beijing, 100193, China
| | - Zuofeng Zhu
- State Key Laboratory of Plant Physiology and Biochemistry, China Agricultural University, Beijing, 100193, China
| | - Fengxia Liu
- State Key Laboratory of Plant Physiology and Biochemistry, China Agricultural University, Beijing, 100193, China
| | - Yongcai Fu
- State Key Laboratory of Plant Physiology and Biochemistry, China Agricultural University, Beijing, 100193, China
| | - Hongwei Cai
- State Key Laboratory of Plant Physiology and Biochemistry, China Agricultural University, Beijing, 100193, China
| | - Xianyou Sun
- State Key Laboratory of Plant Physiology and Biochemistry, China Agricultural University, Beijing, 100193, China
| | - Ping Gu
- State Key Laboratory of Plant Physiology and Biochemistry, China Agricultural University, Beijing, 100193, China
| | - Daoxin Xie
- Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Lubin Tan
- State Key Laboratory of Plant Physiology and Biochemistry, China Agricultural University, Beijing, 100193, China.
| | - Chuanqing Sun
- State Key Laboratory of Plant Physiology and Biochemistry, China Agricultural University, Beijing, 100193, China.
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69
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Griffiths CA, Paul MJ. Targeting carbon for crop yield and drought resilience. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2017; 97:4663-4671. [PMID: 28653336 PMCID: PMC5655914 DOI: 10.1002/jsfa.8501] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 06/12/2017] [Accepted: 06/18/2017] [Indexed: 05/21/2023]
Abstract
Current methods of crop improvement are not keeping pace with projected increases in population growth. Breeding, focused around key traits of stem height and disease resistance, delivered the step-change yield improvements of the green revolution of the 1960s. However, subsequently, yield increases through conventional breeding have been below the projected requirement of 2.4% per year required by 2050. Genetic modification (GM) mainly for herbicide tolerance and insect resistance has been transformational, akin to a second green revolution, although GM has yet to make major inroads into intrinsic yield processes themselves. Drought imposes the major restriction on crop yields globally but, as yet, has not benefited substantially from genetic improvement and still presents a major challenge to agriculture. Much still has to be learnt about the complex process of how drought limits yield and what should be targeted. Mechanisms of drought adaptation from the natural environment cannot be taken into crops without significant modification for the agricultural environment because mechanisms of drought tolerance are often in contrast with mechanisms of high productivity required in agriculture. However, through convergence of fundamental and translational science, it would appear that a mechanism of sucrose allocation in crops can be modified for both productivity and resilience to drought and other stresses. Recent publications show how this mechanism can be targeted by GM, natural variation and a new chemical approach. Here, with an emphasis on drought, we highlight how understanding fundamental science about how crops grow, develop and what limits their growth and yield can be combined with targeted genetic selection and pioneering chemical intervention technology for transformational yield improvements. © 2017 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Cara A Griffiths
- Plant Science, Rothamsted ResearchHarpendenHertfordshireAL5 2JQUK
| | - Matthew J Paul
- Plant Science, Rothamsted ResearchHarpendenHertfordshireAL5 2JQUK
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70
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Avramova Z. The jasmonic acid-signalling and abscisic acid-signalling pathways cross talk during one, but not repeated, dehydration stress: a non-specific 'panicky' or a meaningful response? PLANT, CELL & ENVIRONMENT 2017; 40:1704-1710. [PMID: 28447364 DOI: 10.1111/pce.12967] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 03/28/2017] [Accepted: 03/29/2017] [Indexed: 06/07/2023]
Abstract
Experiencing diverse and recurring biotic and abiotic stresses throughout life, plants have evolved mechanisms to respond, survive and, eventually, adapt to changing habitats. The initial response to drought involves a large number of genes that are involved also in response to other stresses. According to current models, this initial response is non-specific, becoming stress-specific only at later time points. The question, then, is whether non-specific activation of various stress-signalling systems leading to the expression of numerous stress-regulated genes is a false-alarm (panicky) response or whether it has biologically relevant consequences for the plant. Here, it is argued that the initial activation of genes associated other stresses reflects an important event during which stress-specific mechanisms are generated to prevent subsequent activation of non-drought signalling pathways. How plants discriminate between a first and a repeated dehydration stress and how repression of non-drought specific genes is achieved will be discussed on the example of jasmonic acid-associated Arabidopsis genes activated by a first, but not subsequent, dehydration stresses. Revealing how expression of various biotic/abiotic stress responding genes is prevented under recurring drought spells may be critical for our understanding of how plants respond to dynamically changing environments.
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Affiliation(s)
- Zoya Avramova
- School of Biological Sciences, University of Nebraska, Lincoln, NE, 68588, USA
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71
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Sarwat M, Tuteja N. Hormonal signaling to control stomatal movement during drought stress. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.plgene.2017.07.007] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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72
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Le Roy J, Blervacq AS, Créach A, Huss B, Hawkins S, Neutelings G. Spatial regulation of monolignol biosynthesis and laccase genes control developmental and stress-related lignin in flax. BMC PLANT BIOLOGY 2017; 17:124. [PMID: 28705193 PMCID: PMC5513022 DOI: 10.1186/s12870-017-1072-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 07/02/2017] [Indexed: 05/26/2023]
Abstract
BACKGROUND Bast fibres are characterized by very thick secondary cell walls containing high amounts of cellulose and low lignin contents in contrast to the heavily lignified cell walls typically found in the xylem tissues. To improve the quality of the fiber-based products in the future, a thorough understanding of the main cell wall polymer biosynthetic pathways is required. In this study we have carried out a characterization of the genes involved in lignin biosynthesis in flax along with some of their regulation mechanisms. RESULTS We have first identified the members of the phenylpropanoid gene families through a combination of in silico approaches. The more specific lignin genes were further characterized by high throughput transcriptomic approaches in different organs and physiological conditions and their cell/tissue expression was localized in the stems, roots and leaves. Laccases play an important role in the polymerization of monolignols. This multigenic family was determined and a miRNA was identified to play a role in the posttranscriptional regulation by cleaving the transcripts of some specific genes shown to be expressed in lignified tissues. In situ hybridization also showed that the miRNA precursor was expressed in the young xylem cells located near the vascular cambium. The results obtained in this work also allowed us to determine that most of the genes involved in lignin biosynthesis are included in a unique co-expression cluster and that MYB transcription factors are potentially good candidates for regulating these genes. CONCLUSIONS Target engineering of cell walls to improve plant product quality requires good knowledge of the genes responsible for the production of the main polymers. For bast fiber plants such as flax, it is important to target the correct genes from the beginning since the difficulty to produce transgenic material does not make possible to test a large number of genes. Our work determined which of these genes could be potentially modified and showed that it was possible to target different regulatory pathways to modify lignification.
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Affiliation(s)
- Julien Le Roy
- University of Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F-59000, Lille, France
| | - Anne-Sophie Blervacq
- University of Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F-59000, Lille, France
| | - Anne Créach
- University of Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F-59000, Lille, France
| | - Brigitte Huss
- University of Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F-59000, Lille, France
| | - Simon Hawkins
- University of Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F-59000, Lille, France
| | - Godfrey Neutelings
- University of Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F-59000, Lille, France.
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73
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Huang H, Liu B, Liu L, Song S. Jasmonate action in plant growth and development. JOURNAL OF EXPERIMENTAL BOTANY 2017; 68:1349-1359. [PMID: 28158849 DOI: 10.1093/jxb/erw495] [Citation(s) in RCA: 301] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Phytohormones, including jasmonates (JAs), gibberellin, ethylene, abscisic acid, and auxin, integrate endogenous developmental cues with environmental signals to regulate plant growth, development, and defense. JAs are well- recognized lipid-derived stress hormones that regulate plant adaptations to biotic stresses, including herbivore attack and pathogen infection, as well as abiotic stresses, including wounding, ozone, and ultraviolet radiation. An increasing number of studies have shown that JAs also have functions in a remarkable number of plant developmental events, including primary root growth, reproductive development, and leaf senescence. Since the 1980s, details of the JA biosynthesis pathway, signaling pathway, and crosstalk during plant growth and development have been elucidated. Here, we summarize recent advances and give an updated overview of JA action and crosstalk in plant growth and development.
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Affiliation(s)
- Huang Huang
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University, Beijing 100048, China
- Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Bei Liu
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Liangyu Liu
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Susheng Song
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University, Beijing 100048, China
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Hakata M, Muramatsu M, Nakamura H, Hara N, Kishimoto M, Iida-Okada K, Kajikawa M, Imai-Toki N, Toki S, Nagamura Y, Yamakawa H, Ichikawa H. Overexpression of TIFY genes promotes plant growth in rice through jasmonate signaling. Biosci Biotechnol Biochem 2017; 81:906-913. [PMID: 28079456 DOI: 10.1080/09168451.2016.1274638] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Because environmental stress can reduce crop growth and yield, the identification of genes that enhance agronomic traits is increasingly important. Previous screening of full-length cDNA overexpressing (FOX) rice lines revealed that OsTIFY11b, one of 20 TIFY proteins in rice, affects plant size, grain weight, and grain size. Therefore, we analyzed the effect of OsTIFY11b and nine other TIFY genes on the growth and yield of corresponding TIFY-FOX lines. Regardless of temperature, grain weight and culm length were enhanced in lines overexpressing TIFY11 subfamily genes, except OsTIFY11e. The TIFY-FOX plants exhibited increased floret number and reduced days to flowering, as well as reduced spikelet fertility, and OsTIFY10b, in particular, enhanced grain yield by minimizing decreases in fertility. We suggest that the enhanced growth of TIFY-transgenic rice is related to regulation of the jasmonate signaling pathway, as in Arabidopsis. Moreover, we discuss the potential application of TIFY overexpression for improving crop yield.
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Affiliation(s)
- Makoto Hakata
- a National Institute of Agrobiological Sciences , Tsukuba , Japan.,b Hokuriku Research Center, Central Region Agricultural Research Center , National Agriculture and Food Research Organization , Joetsu , Japan.,c Kyushu Okinawa Agricultural Research Center , National Agriculture and Food Research Organization , Chikugo , Japan
| | | | | | - Naho Hara
- a National Institute of Agrobiological Sciences , Tsukuba , Japan
| | - Miho Kishimoto
- a National Institute of Agrobiological Sciences , Tsukuba , Japan
| | - Keiko Iida-Okada
- a National Institute of Agrobiological Sciences , Tsukuba , Japan
| | - Mariko Kajikawa
- a National Institute of Agrobiological Sciences , Tsukuba , Japan
| | - Naoko Imai-Toki
- a National Institute of Agrobiological Sciences , Tsukuba , Japan
| | - Seiichi Toki
- a National Institute of Agrobiological Sciences , Tsukuba , Japan
| | | | - Hiromoto Yamakawa
- b Hokuriku Research Center, Central Region Agricultural Research Center , National Agriculture and Food Research Organization , Joetsu , Japan
| | - Hiroaki Ichikawa
- a National Institute of Agrobiological Sciences , Tsukuba , Japan
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75
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Liu X, Wei X, Sheng Z, Jiao G, Tang S, Luo J, Hu P. Polycomb Protein OsFIE2 Affects Plant Height and Grain Yield in Rice. PLoS One 2016; 11:e0164748. [PMID: 27764161 PMCID: PMC5072591 DOI: 10.1371/journal.pone.0164748] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2016] [Accepted: 09/29/2016] [Indexed: 01/15/2023] Open
Abstract
Polycomb group (PcG) proteins have been shown to affect growth and development in plants. To further elucidate their role in these processes in rice, we isolated and characterized a rice mutant which exhibits dwarfism, reduced seed setting rate, defective floral organ, and small grains. Map-based cloning revealed that abnormal phenotypes were attributed to a mutation of the Fertilization Independent Endosperm 2 (OsFIE2) protein, which belongs to the PcG protein family. So we named the mutant as osfie2-1. Histological analysis revealed that the number of longitudinal cells in the internodes decreased in osfie2-1, and that lateral cell layer of the internodes was markedly thinner than wild-type. In addition, compared to wild-type, the number of large and small vascular bundles decreased in osfie2-1, as well as cell number and cell size in spikelet hulls. OsFIE2 is expressed in most tissues and the coded protein localizes in both nucleus and cytoplasm. Yeast two-hybrid and bimolecular fluorescence complementation assays demonstrated that OsFIE2 interacts with OsiEZ1 which encodes an enhancer of zeste protein previously identified as a histone methylation enzyme. RNA sequencing-based transcriptome profiling and qRT-PCR analysis revealed that some homeotic genes and genes involved in endosperm starch synthesis, cell division/expansion and hormone synthesis and signaling are differentially expressed between osfie2-1 and wild-type. In addition, the contents of IAA, GA3, ABA, JA and SA in osfie2-1 are significantly different from those in wild-type. Taken together, these results indicate that OsFIE2 plays an important role in the regulation of plant height and grain yield in rice.
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Affiliation(s)
- Xianbo Liu
- State Key Laboratory of Rice Biology, Key Laboratory of Rice Biology and Breeding of Ministry of Agriculture, China National Rice Research Institute, Hangzhou, 310006, China
| | - Xiangjin Wei
- State Key Laboratory of Rice Biology, Key Laboratory of Rice Biology and Breeding of Ministry of Agriculture, China National Rice Research Institute, Hangzhou, 310006, China
| | - Zhonghua Sheng
- State Key Laboratory of Rice Biology, Key Laboratory of Rice Biology and Breeding of Ministry of Agriculture, China National Rice Research Institute, Hangzhou, 310006, China
| | - Guiai Jiao
- State Key Laboratory of Rice Biology, Key Laboratory of Rice Biology and Breeding of Ministry of Agriculture, China National Rice Research Institute, Hangzhou, 310006, China
| | - Shaoqing Tang
- State Key Laboratory of Rice Biology, Key Laboratory of Rice Biology and Breeding of Ministry of Agriculture, China National Rice Research Institute, Hangzhou, 310006, China
| | - Ju Luo
- State Key Laboratory of Rice Biology, Key Laboratory of Rice Biology and Breeding of Ministry of Agriculture, China National Rice Research Institute, Hangzhou, 310006, China
| | - Peisong Hu
- State Key Laboratory of Rice Biology, Key Laboratory of Rice Biology and Breeding of Ministry of Agriculture, China National Rice Research Institute, Hangzhou, 310006, China
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Fang C, Zhang H, Wan J, Wu Y, Li K, Jin C, Chen W, Wang S, Wang W, Zhang H, Zhang P, Zhang F, Qu L, Liu X, Zhou DX, Luo J. Control of Leaf Senescence by an MeOH-Jasmonates Cascade that Is Epigenetically Regulated by OsSRT1 in Rice. MOLECULAR PLANT 2016; 9:1366-1378. [PMID: 27477683 DOI: 10.1016/j.molp.2016.07.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 06/27/2016] [Accepted: 07/16/2016] [Indexed: 05/08/2023]
Abstract
Although considerable progress has been made in identifying the genes regulating accumulation of hormones that are involved in leaf senescence, only a few studies have focused on natural variations in jasmonates content and much less on the underlying genetic basis. Moreover, the epigenetic regulation of jasmonate-mediated leaf senescence remains largely unknown. In this study, we carried out metabolic profiling of a worldwide collection of rice accessions and demonstrated that there are substantial variations in jasmonate levels among these accessions. A subsequent metabolite-based genome-wide association study identified candidates for two major quantitative genes (QTGs), OsPME1 and OsTSD2, affecting the content of jasmonates. Further investigations using a series of relevant mutants and transgenic lines revealed the MeOH-jasmonate cascade plays an important role in regulating leaf senescence. Moreover, we showed that OsSRT1, one of the two Sir2 (silent information regulator 2) homologs in rice, negatively regulates leaf senescence by repressing expression of the biosynthetic genes of this metabolic cascade and at least particially through histone H3K9 deacetylation of OsPME1. Taken together, our results indicate that the MeOH-jasmonates cascade and its epigenetic regulation are crucial for controlling leaf senescence process in rice.
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Affiliation(s)
- ChuanYing Fang
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
| | - Hua Zhang
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
| | - Jian Wan
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
| | - YangYang Wu
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
| | - Kang Li
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
| | - Cheng Jin
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
| | - Wei Chen
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
| | - ShouChuang Wang
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
| | - WenSheng Wang
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
| | - HaiWei Zhang
- Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Pan Zhang
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
| | - Fei Zhang
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
| | - LiangHuan Qu
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
| | - Xianqing Liu
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Dao-Xiu Zhou
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China; Institute of Plant Sciences Paris-Saclay, Université Paris-sud 11, Orsay 91405, France
| | - Jie Luo
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China.
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77
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Nguyen D, Rieu I, Mariani C, van Dam NM. How plants handle multiple stresses: hormonal interactions underlying responses to abiotic stress and insect herbivory. PLANT MOLECULAR BIOLOGY 2016; 91:727-40. [PMID: 27095445 PMCID: PMC4932144 DOI: 10.1007/s11103-016-0481-8] [Citation(s) in RCA: 145] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Accepted: 04/09/2016] [Indexed: 05/18/2023]
Abstract
Adaptive plant responses to specific abiotic stresses or biotic agents are fine-tuned by a network of hormonal signaling cascades, including abscisic acid (ABA), ethylene, jasmonic acid (JA) and salicylic acid. Moreover, hormonal cross-talk modulates plant responses to abiotic stresses and defenses against insect herbivores when they occur simultaneously. How such interactions affect plant responses under multiple stresses, however, is less understood, even though this may frequently occur in natural environments. Here, we review our current knowledge on how hormonal signaling regulates abiotic stress responses and defenses against insects, and discuss the few recent studies that attempted to dissect hormonal interactions occurring under simultaneous abiotic stress and herbivory. Based on this we hypothesize that drought stress enhances insect resistance due to synergistic interactions between JA and ABA signaling. Responses to flooding or waterlogging involve ethylene signaling, which likely reduces plant resistance to chewing herbivores due to its negative cross-talk with JA. However, the outcome of interactions between biotic and abiotic stress signaling is often plant and/or insect species-dependent and cannot simply be predicted based on general knowledge on the involvement of signaling pathways in single stress responses. More experimental data on non-model plant and insect species are needed to reveal general patterns and better understand the molecular mechanisms allowing plants to optimize their responses in complex environments.
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Affiliation(s)
- Duy Nguyen
- Molecular Plant Physiology, Institute for Water and Wetland Research (IWWR), Radboud University, PO Box 9010, 6500 GL, Nijmegen, The Netherlands
| | - Ivo Rieu
- Molecular Plant Physiology, Institute for Water and Wetland Research (IWWR), Radboud University, PO Box 9010, 6500 GL, Nijmegen, The Netherlands
| | - Celestina Mariani
- Molecular Plant Physiology, Institute for Water and Wetland Research (IWWR), Radboud University, PO Box 9010, 6500 GL, Nijmegen, The Netherlands
| | - Nicole M van Dam
- Molecular Plant Physiology, Institute for Water and Wetland Research (IWWR), Radboud University, PO Box 9010, 6500 GL, Nijmegen, The Netherlands.
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, 04103, Leipzig, Germany.
- Institute of Ecology, Friedrich Schiller University Jena, Dornburger-Str. 159, 07743, Jena, Germany.
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78
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de Ollas C, Dodd IC. Physiological impacts of ABA-JA interactions under water-limitation. PLANT MOLECULAR BIOLOGY 2016; 91:641-50. [PMID: 27299601 PMCID: PMC4932129 DOI: 10.1007/s11103-016-0503-6] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Accepted: 05/18/2016] [Indexed: 05/03/2023]
Abstract
Plant responses to drought stress depend on highly regulated signal transduction pathways with multiple interactions. This complex crosstalk can lead to a physiological outcome of drought avoidance or tolerance/resistance. ABA is the principal mediator of these responses due to the regulation of stomatal closure that determines plant growth and survival, but also other strategies of drought resistance such as osmotic adjustment. However, other hormones such as JA seem responsible for regulating a subset of plant responses to drought by regulating ABA biosynthesis and accumulation and ABA-dependent signalling, but also by ABA independent pathways. Here, we review recent reports of ABA-JA hormonal and molecular interactions within a physiological framework of drought tolerance. Understanding the physiological significance of this complex regulation offers opportunities to find strategies of drought tolerance that avoid unwanted side effects that limit growth and yield, and may allow biotechnological crop improvement.
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Affiliation(s)
- Carlos de Ollas
- Lancaster Environment Centre, Lancaster University, Lancaster, UK
| | - Ian C. Dodd
- Lancaster Environment Centre, Lancaster University, Lancaster, UK
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79
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Ahmad P, Rasool S, Gul A, Sheikh SA, Akram NA, Ashraf M, Kazi AM, Gucel S. Jasmonates: Multifunctional Roles in Stress Tolerance. FRONTIERS IN PLANT SCIENCE 2016; 7:813. [PMID: 27379115 PMCID: PMC4908892 DOI: 10.3389/fpls.2016.00813] [Citation(s) in RCA: 171] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 05/25/2016] [Indexed: 05/18/2023]
Abstract
Jasmonates (JAs) [Jasmonic acid (JA) and methyl jasmonates (MeJAs)] are known to take part in various physiological processes. Exogenous application of JAs so far tested on different plants under abiotic stresses particularly salinity, drought, and temperature (low/high) conditions have proved effective in improving plant stress tolerance. However, its extent of effectiveness entirely depends on the type of plant species tested or its concentration. The effects of introgression or silencing of different JA- and Me-JA-related genes have been summarized in this review, which have shown a substantial role in improving crop yield and quality in different plants under stress or non-stress conditions. Regulation of JAs synthesis is impaired in stressed as well as unstressed plant cells/tissues, which is believed to be associated with a variety of metabolic events including signal transduction. Although, mitogen activated protein kinases (MAPKs) are important components of JA signaling and biosynthesis pathways, nitric oxide, ROS, calcium, ABA, ethylene, and salicylic acid are also important mediators of plant growth and development during JA signal transduction and synthesis. The exploration of other signaling molecules can be beneficial to examine the details of underlying molecular mechanisms of JA signal transduction. Much work is to be done in near future to find the proper answers of the questions like action of JA related metabolites, and identification of universal JA receptors etc. Complete signaling pathways involving MAPKs, CDPK, TGA, SIPK, WIPK, and WRKY transcription factors are yet to be investigated to understand the complete mechanism of action of JAs.
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Affiliation(s)
- Parvaiz Ahmad
- Department of Botany, S.P. CollegeSrinagar, India
- Department of Botany and Microbiology, College of Sciences, King Saud UniversityRiyadh, Saudi Arabia
| | - Saiema Rasool
- Forest Biotech Lab, Department of Forest Management, Faculty of Forestry, Universiti Putra MalaysiaSelangor, Malaysia
| | - Alvina Gul
- Atta-ur-Rahman School of Applied Biosciences, National University of Science and TechnologyIslamabad, Pakistan
| | - Subzar A. Sheikh
- Department of Botany, Govt. Degree College (Boys), AnantnagAnantnag, India
| | - Nudrat A. Akram
- Department of Botany, GC University FaisalabadFaisalabad, Pakistan
| | - Muhammad Ashraf
- Department of Botany and Microbiology, College of Sciences, King Saud UniversityRiyadh, Saudi Arabia
- Pakistan Science FoundationIslamabad, Pakistan
| | - A. M. Kazi
- Department of Botany, University of SargodhaSargodha, Pakistan
| | - Salih Gucel
- Centre for Environmental Research, Near East UniversityNicosia, Cyprus
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80
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Phytohormones and their metabolic engineering for abiotic stress tolerance in crop plants. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.cj.2016.01.010] [Citation(s) in RCA: 501] [Impact Index Per Article: 62.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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81
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Qi J, Li J, Han X, Li R, Wu J, Yu H, Hu L, Xiao Y, Lu J, Lou Y. Jasmonic acid carboxyl methyltransferase regulates development and herbivory-induced defense response in rice. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2016; 58:564-76. [PMID: 26466818 DOI: 10.1111/jipb.12436] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Accepted: 10/12/2015] [Indexed: 05/03/2023]
Abstract
Jasmonic acid (JA) and related metabolites play a key role in plant defense and growth. JA carboxyl methyltransferase (JMT) may be involved in plant defense and development by methylating JA to methyl jasmonate (MeJA) and thus influencing the concentrations of JA and related metabolites. However, no JMT gene has been well characterized in monocotyledon defense and development at the molecular level. After we cloned a rice JMT gene, OsJMT1, whose encoding protein was localized in the cytosol, we found that the recombinant OsJMT1 protein catalyzed JA to MeJA. OsJMT1 is up-regulated in response to infestation with the brown planthopper (BPH; Nilaparvata lugens). Plants in which OsJMT1 had been overexpressed (oe-JMT plants) showed reduced height and yield. These oe-JMT plants also exhibited increased MeJA levels but reduced levels of herbivore-induced JA and jasmonoyl-isoleucine (JA-Ile). The oe-JMT plants were more attractive to BPH female adults but showed increased resistance to BPH nymphs, probably owing to the different responses of BPH female adults and nymphs to the changes in levels of H2 O2 and MeJA in oe-JMT plants. These results indicate that OsJMT1, by altering levels of JA and related metabolites, plays a role in regulating plant development and herbivore-induced defense responses in rice.
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Affiliation(s)
- Jinfeng Qi
- State Key Laboratory of Rice Biology, Institute of Insect Science, Zhejiang University, Hangzhou 310058, China
- Key Laboratory of Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Jiancai Li
- State Key Laboratory of Rice Biology, Institute of Insect Science, Zhejiang University, Hangzhou 310058, China
| | - Xiu Han
- State Key Laboratory of Rice Biology, Institute of Insect Science, Zhejiang University, Hangzhou 310058, China
| | - Ran Li
- State Key Laboratory of Rice Biology, Institute of Insect Science, Zhejiang University, Hangzhou 310058, China
| | - Jianqiang Wu
- Key Laboratory of Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Haixin Yu
- State Key Laboratory of Rice Biology, Institute of Insect Science, Zhejiang University, Hangzhou 310058, China
| | - Lingfei Hu
- State Key Laboratory of Rice Biology, Institute of Insect Science, Zhejiang University, Hangzhou 310058, China
| | - Yutao Xiao
- State Key Laboratory of Rice Biology, Institute of Insect Science, Zhejiang University, Hangzhou 310058, China
| | - Jing Lu
- State Key Laboratory of Rice Biology, Institute of Insect Science, Zhejiang University, Hangzhou 310058, China
| | - Yonggen Lou
- State Key Laboratory of Rice Biology, Institute of Insect Science, Zhejiang University, Hangzhou 310058, China
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Mofatto LS, Carneiro FDA, Vieira NG, Duarte KE, Vidal RO, Alekcevetch JC, Cotta MG, Verdeil JL, Lapeyre-Montes F, Lartaud M, Leroy T, De Bellis F, Pot D, Rodrigues GC, Carazzolle MF, Pereira GAG, Andrade AC, Marraccini P. Identification of candidate genes for drought tolerance in coffee by high-throughput sequencing in the shoot apex of different Coffea arabica cultivars. BMC PLANT BIOLOGY 2016; 16:94. [PMID: 27095276 PMCID: PMC4837521 DOI: 10.1186/s12870-016-0777-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 04/13/2016] [Indexed: 05/10/2023]
Abstract
BACKGROUND Drought is a widespread limiting factor in coffee plants. It affects plant development, fruit production, bean development and consequently beverage quality. Genetic diversity for drought tolerance exists within the coffee genus. However, the molecular mechanisms underlying the adaptation of coffee plants to drought are largely unknown. In this study, we compared the molecular responses to drought in two commercial cultivars (IAPAR59, drought-tolerant and Rubi, drought-susceptible) of Coffea arabica grown in the field under control (irrigation) and drought conditions using the pyrosequencing of RNA extracted from shoot apices and analysing the expression of 38 candidate genes. RESULTS Pyrosequencing from shoot apices generated a total of 34.7 Mbp and 535,544 reads enabling the identification of 43,087 clusters (41,512 contigs and 1,575 singletons). These data included 17,719 clusters (16,238 contigs and 1,575 singletons) exclusively from 454 sequencing reads, along with 25,368 hybrid clusters assembled with 454 sequences. The comparison of DNA libraries identified new candidate genes (n = 20) presenting differential expression between IAPAR59 and Rubi and/or drought conditions. Their expression was monitored in plagiotropic buds, together with those of other (n = 18) candidates genes. Under drought conditions, up-regulated expression was observed in IAPAR59 but not in Rubi for CaSTK1 (protein kinase), CaSAMT1 (SAM-dependent methyltransferase), CaSLP1 (plant development) and CaMAS1 (ABA biosynthesis). Interestingly, the expression of lipid-transfer protein (nsLTP) genes was also highly up-regulated under drought conditions in IAPAR59. This may have been related to the thicker cuticle observed on the abaxial leaf surface in IAPAR59 compared to Rubi. CONCLUSIONS The full transcriptome assembly of C. arabica, followed by functional annotation, enabled us to identify differentially expressed genes related to drought conditions. Using these data, candidate genes were selected and their differential expression profiles were confirmed by qPCR experiments in plagiotropic buds of IAPAR59 and Rubi under drought conditions. As regards the genes up-regulated under drought conditions, specifically in the drought-tolerant IAPAR59, several corresponded to orphan genes but also to genes coding proteins involved in signal transduction pathways, as well as ABA and lipid metabolism, for example. The identification of these genes should help advance our understanding of the genetic determinism of drought tolerance in coffee.
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Affiliation(s)
- Luciana Souto Mofatto
- />Laboratório de Genômica e Expressão (LGE), Departamento de Genética e Evolução, Instituto de Biologia/UNICAMP, Cidade Universitária Zeferino Vaz, 13083-970 Campinas, SP Brazil
| | - Fernanda de Araújo Carneiro
- />Embrapa Recursos Genéticos e Biotecnologia (LGM-NTBio), Parque Estação Biológica, CP 02372, 70770-917, Brasilia, DF Brazil
| | - Natalia Gomes Vieira
- />Embrapa Recursos Genéticos e Biotecnologia (LGM-NTBio), Parque Estação Biológica, CP 02372, 70770-917, Brasilia, DF Brazil
| | - Karoline Estefani Duarte
- />Embrapa Recursos Genéticos e Biotecnologia (LGM-NTBio), Parque Estação Biológica, CP 02372, 70770-917, Brasilia, DF Brazil
| | - Ramon Oliveira Vidal
- />Laboratório de Genômica e Expressão (LGE), Departamento de Genética e Evolução, Instituto de Biologia/UNICAMP, Cidade Universitária Zeferino Vaz, 13083-970 Campinas, SP Brazil
| | - Jean Carlos Alekcevetch
- />Embrapa Recursos Genéticos e Biotecnologia (LGM-NTBio), Parque Estação Biológica, CP 02372, 70770-917, Brasilia, DF Brazil
| | - Michelle Guitton Cotta
- />Embrapa Recursos Genéticos e Biotecnologia (LGM-NTBio), Parque Estação Biológica, CP 02372, 70770-917, Brasilia, DF Brazil
| | | | | | | | | | | | - David Pot
- />CIRAD UMR AGAP, F-34398 Montpellier, France
| | - Gustavo Costa Rodrigues
- />Embrapa Informática Agropecuária, UNICAMP, Av. André Tosello n° 209, CP 6041, 13083-886 Campinas, SP Brazil
| | - Marcelo Falsarella Carazzolle
- />Laboratório de Genômica e Expressão (LGE), Departamento de Genética e Evolução, Instituto de Biologia/UNICAMP, Cidade Universitária Zeferino Vaz, 13083-970 Campinas, SP Brazil
| | - Gonçalo Amarante Guimarães Pereira
- />Laboratório de Genômica e Expressão (LGE), Departamento de Genética e Evolução, Instituto de Biologia/UNICAMP, Cidade Universitária Zeferino Vaz, 13083-970 Campinas, SP Brazil
| | - Alan Carvalho Andrade
- />Embrapa Recursos Genéticos e Biotecnologia (LGM-NTBio), Parque Estação Biológica, CP 02372, 70770-917, Brasilia, DF Brazil
- />present address: Embrapa Café, INOVACAFÉ, Campus UFLA, 37200-000 Lavras, MG Brazil
| | - Pierre Marraccini
- />Embrapa Recursos Genéticos e Biotecnologia (LGM-NTBio), Parque Estação Biológica, CP 02372, 70770-917, Brasilia, DF Brazil
- />CIRAD UMR AGAP, F-34398 Montpellier, France
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Kissoudis C, van de Wiel C, Visser RG, van der Linden G. Future-proof crops: challenges and strategies for climate resilience improvement. CURRENT OPINION IN PLANT BIOLOGY 2016; 30:47-56. [PMID: 26874966 DOI: 10.1016/j.pbi.2016.01.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2015] [Revised: 01/18/2016] [Accepted: 01/21/2016] [Indexed: 05/13/2023]
Abstract
Breeding for stress-resilient crops strongly depends on technological and biological advancements that have provided a wealth of information on genetic variants and their contribution to stress tolerance. In the context of the upcoming challenges for agriculture due to climate change, such as prolonged and/or increased stress intensities, CO2 increase and stress combinations, hierarchizing this information is key to accelerating crop improvement towards sustained or even increased productivity. We propose traits with high scalability to yield and crop performance that can be targeted for improvement and provide examples of recent discoveries with potential applicability in breeding. Critical to success is the integrated analysis of the phenotypes of genetic variants across different environmental variables using modelling approaches and high-throughput phenotyping.
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Affiliation(s)
- Christos Kissoudis
- Wageningen UR Plant Breeding, Wageningen University & Research Centre, Droevendaalsesteeg 1, PO Box 386, 6700AJ Wageningen, The Netherlands
| | - Clemens van de Wiel
- Wageningen UR Plant Breeding, Wageningen University & Research Centre, Droevendaalsesteeg 1, PO Box 386, 6700AJ Wageningen, The Netherlands
| | - Richard Gf Visser
- Wageningen UR Plant Breeding, Wageningen University & Research Centre, Droevendaalsesteeg 1, PO Box 386, 6700AJ Wageningen, The Netherlands
| | - Gerard van der Linden
- Wageningen UR Plant Breeding, Wageningen University & Research Centre, Droevendaalsesteeg 1, PO Box 386, 6700AJ Wageningen, The Netherlands.
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Nam KH, Kim DY, Pack IS, Park JH, Seo JS, Choi YD, Cheong JJ, Kim CH, Kim CG. Comparative analysis of chemical compositions between non-transgenic soybean seeds and those from plants over-expressing AtJMT, the gene for jasmonic acid carboxyl methyltransferase. Food Chem 2016; 196:236-41. [PMID: 26593488 DOI: 10.1016/j.foodchem.2015.09.046] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 08/10/2015] [Accepted: 09/14/2015] [Indexed: 01/13/2023]
Abstract
Transgenic overexpression of the Arabidopsis gene for jasmonic acid carboxyl methyltransferase (AtJMT) is involved in regulating jasmonate-related plant responses. To examine its role in the compositional profile of soybean (Glycine max), we compared the seeds from field-grown plants that over-express AtJMT with those of the non-transgenic, wild-type (WT) counterpart. Our analysis of chemical compositions included proximates, amino acids, fatty acids, isoflavones, and antinutrients. Overexpression of AtJMT in the seeds resulted in decreased amounts of tryptophan, palmitic acid, linolenic acid, and stachyose, but increased levels of gadoleic acid and genistein. In particular, seeds from the transgenic soybeans contained 120.0-130.5% more genistein and 60.5-82.1% less stachyose than the WT. A separate evaluation of ingredient values showed that all were within the reference ranges reported for commercially available soybeans, thereby demonstrating the substantial equivalence of these transgenic and non-transgenic seeds.
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Affiliation(s)
- Kyong-Hee Nam
- Bio-Evaluation Center, KRIBB, Cheongju 363-883, Republic of Korea
| | - Do Young Kim
- Bio-Evaluation Center, KRIBB, Cheongju 363-883, Republic of Korea
| | - In-Soon Pack
- Bio-Evaluation Center, KRIBB, Cheongju 363-883, Republic of Korea
| | - Jung-Ho Park
- Bio-Evaluation Center, KRIBB, Cheongju 363-883, Republic of Korea
| | - Jun Sung Seo
- Department of Agricultural Biotechnology, Seoul National University, 151-921, Republic of Korea
| | - Yang Do Choi
- Department of Agricultural Biotechnology, Seoul National University, 151-921, Republic of Korea
| | - Jong-Joo Cheong
- Center for Food and Bioconvergence, Seoul National University, Seoul 151-921, Republic of Korea
| | - Chung Ho Kim
- Department of Food and Nutrition, Seowon University, Cheongju 361-742, Republic of Korea
| | - Chang-Gi Kim
- Bio-Evaluation Center, KRIBB, Cheongju 363-883, Republic of Korea.
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Dhakarey R, Kodackattumannil Peethambaran P, Riemann M. Functional Analysis of Jasmonates in Rice through Mutant Approaches. PLANTS 2016; 5:plants5010015. [PMID: 27135235 PMCID: PMC4844424 DOI: 10.3390/plants5010015] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 03/04/2016] [Accepted: 03/14/2016] [Indexed: 11/16/2022]
Abstract
Jasmonic acid, one of the major plant hormones, is, unlike other hormones, a lipid-derived compound that is synthesized from the fatty acid linolenic acid. It has been studied intensively in many plant species including Arabidopsis thaliana, in which most of the enzymes participating in its biosynthesis were characterized. In the past 15 years, mutants and transgenic plants affected in the jasmonate pathway became available in rice and facilitate studies on the functions of this hormone in an important crop. Those functions are partially conserved compared to other plant species, and include roles in fertility, response to mechanical wounding and defense against herbivores. However, new and surprising functions have also been uncovered by mutant approaches, such as a close link between light perception and the jasmonate pathway. This was not only useful to show a phenomenon that is unique to rice but also helped to establish this role in plant species where such links are less obvious. This review aims to provide an overview of currently available rice mutants and transgenic plants in the jasmonate pathway and highlights some selected roles of jasmonate in this species, such as photomorphogenesis, and abiotic and biotic stress.
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Affiliation(s)
- Rohit Dhakarey
- Botanical Institute, Karlsruhe Institute of Technology, Kaiserstr. 2, 76131 Karlsruhe, Germany.
| | | | - Michael Riemann
- Botanical Institute, Karlsruhe Institute of Technology, Kaiserstr. 2, 76131 Karlsruhe, Germany.
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Farooq MA, Gill RA, Islam F, Ali B, Liu H, Xu J, He S, Zhou W. Methyl Jasmonate Regulates Antioxidant Defense and Suppresses Arsenic Uptake in Brassica napus L. FRONTIERS IN PLANT SCIENCE 2016; 7:468. [PMID: 27148299 PMCID: PMC4826882 DOI: 10.3389/fpls.2016.00468] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Accepted: 03/24/2016] [Indexed: 05/17/2023]
Abstract
Methyl jasmonate (MJ) is an important plant growth regulator, involved in plant defense against abiotic stresses, however, its possible function in response to metal stress is poorly understood. In the present study, the effect of MJ on physiological and biochemical changes of the plants exposed to arsenic (As) stress were investigated in two Brassica napus L. cultivars (ZS 758 - a black seed type, and Zheda 622 - a yellow seed type). The As treatment at 200 μM was more phytotoxic, however, its combined application with MJ resulted in significant increase in leaf chlorophyll fluorescence, biomass production and reduced malondialdehyde content compared with As stressed plants. The application of MJ minimized the oxidative stress, as revealed via a lower level of reactive oxygen species (ROS) synthesis (H2O2 and OH(-)) in leaves and the maintenance of high redox states of glutathione and ascorbate. Enhanced enzymatic activities and gene expression of important antioxidants (SOD, APX, CAT, POD), secondary metabolites (PAL, PPO, CAD) and induction of lypoxygenase gene suggest that MJ plays an effective role in the regulation of multiple transcriptional pathways which were involved in oxidative stress responses. The content of As was higher in yellow seeded plants (cv. Zheda 622) as compared to black seeded plants (ZS 758). The application of MJ significantly reduced the As content in leaves and roots of both cultivars. Findings of the present study reveal that MJ improves ROS scavenging through enhanced antioxidant defense system, secondary metabolite and reduced As contents in both the cultivars.
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Affiliation(s)
- Muhammad A. Farooq
- Institute of Crop Science and Zhejiang Key Laboratory of Crop Germplasm, Zhejiang UniversityHangzhou, China
| | - Rafaqat A. Gill
- Institute of Crop Science and Zhejiang Key Laboratory of Crop Germplasm, Zhejiang UniversityHangzhou, China
| | - Faisal Islam
- Institute of Crop Science and Zhejiang Key Laboratory of Crop Germplasm, Zhejiang UniversityHangzhou, China
| | - Basharat Ali
- Institute of Crop Science and Zhejiang Key Laboratory of Crop Germplasm, Zhejiang UniversityHangzhou, China
| | - Hongbo Liu
- College of Agriculture and Food Science, Zhejiang A & F UniversityLin’an, China
- *Correspondence: Weijun Zhou, ; Hongbo Liu,
| | - Jianxiang Xu
- Institute of Crop Science, Quzhou Academy of Agricultural SciencesQuzhou, China
| | - Shuiping He
- Institute of Crop Science and Zhejiang Key Laboratory of Crop Germplasm, Zhejiang UniversityHangzhou, China
| | - Weijun Zhou
- Institute of Crop Science and Zhejiang Key Laboratory of Crop Germplasm, Zhejiang UniversityHangzhou, China
- *Correspondence: Weijun Zhou, ; Hongbo Liu,
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Fahad S, Hussain S, Saud S, Hassan S, Ihsan Z, Shah AN, Wu C, Yousaf M, Nasim W, Alharby H, Alghabari F, Huang J. Exogenously Applied Plant Growth Regulators Enhance the Morpho-Physiological Growth and Yield of Rice under High Temperature. FRONTIERS IN PLANT SCIENCE 2016; 7:1250. [PMID: 27625658 PMCID: PMC5003834 DOI: 10.3389/fpls.2016.01250] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Accepted: 08/08/2016] [Indexed: 05/03/2023]
Abstract
A 2-year experiment was conducted to ascertain the effects of exogenously applied plant growth regulators (PGR) on rice growth and yield attributes under high day (HDT) and high night temperature (HNT). Two rice cultivars (IR-64 and Huanghuazhan) were subjected to temperature treatments in controlled growth chambers and four different combinations of ascorbic acid (Vc), alpha-tocopherol (Ve), brassinosteroids (Br), methyl jasmonates (MeJA), and triazoles (Tr) were applied. High temperature severely affected rice morphology, and also reduced leaf area, above-, and below-ground biomass, photosynthesis, and water use efficiency, while increased the leaf water potential of both rice cultivars. Grain yield and its related attributes except number of panicles, were reduced under high temperature. The HDT posed more negative effects on rice physiological attributes, while HNT was more detrimental for grain formation and yield. The Huanghuazhan performed better than IR-64 under high temperature stress with better growth and higher grain yield. Exogenous application of PGRs was helpful in alleviating the adverse effects of high temperature. Among PGR combinations, the Vc+Ve+MejA+Br was the most effective treatment for both cultivars under high temperature stress. The highest grain production by Vc+Ve+MejA+Br treated plants was due to enhanced photosynthesis, spikelet fertility and grain filling, which compensated the adversities of high temperature stress. Taken together, these results will be of worth for further understanding the adaptation and survival mechanisms of rice to high temperature and will assist in developing heat-resistant rice germplasm in future.
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Affiliation(s)
- Shah Fahad
- National Key Laboratory of Crop Genetic Improvement, MOA Key Laboratory of Crop Ecophysiology and Farming System, College of Plant Science and Technology, Huazhong Agricultural UniversityWuhan, China
| | - Saddam Hussain
- College of Resources and Environment, Huazhong Agricultural UniversityWuhan, China
| | - Shah Saud
- Department of Horticulture, Northeast Agricultural UniversityHarbin, China
| | - Shah Hassan
- Department of Agricultural Extension Education and Communication, The University of Agriculture, PeshawarPeshawar, Pakistan
| | - Zahid Ihsan
- Department of Arid Land Agriculture, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdul Aziz UniversityJeddah, Saudi Arabia
| | - Adnan N. Shah
- National Key Laboratory of Crop Genetic Improvement, MOA Key Laboratory of Crop Ecophysiology and Farming System, College of Plant Science and Technology, Huazhong Agricultural UniversityWuhan, China
| | - Chao Wu
- National Key Laboratory of Crop Genetic Improvement, MOA Key Laboratory of Crop Ecophysiology and Farming System, College of Plant Science and Technology, Huazhong Agricultural UniversityWuhan, China
| | - Muhammad Yousaf
- College of Resources and Environment, Huazhong Agricultural UniversityWuhan, China
| | - Wajid Nasim
- Department of Environmental Sciences, COMSATS Institute of Information TechnologyVehari, Pakistan
| | - Hesham Alharby
- Department of Biological Sciences, Faculty of Sciences, King Abdulaziz UniversityJeddah, Saudi Arabia
| | - Fahad Alghabari
- Department of Arid Land Agriculture, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdul Aziz UniversityJeddah, Saudi Arabia
| | - Jianliang Huang
- National Key Laboratory of Crop Genetic Improvement, MOA Key Laboratory of Crop Ecophysiology and Farming System, College of Plant Science and Technology, Huazhong Agricultural UniversityWuhan, China
- Hubei Collaborative Innovation Center for Grain Industry, Yangtze UniversityHubei, China
- *Correspondence: Jianliang Huang
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Llanes A, Andrade A, Alemano S, Luna V. Alterations of Endogenous Hormonal Levels in Plants under Drought and Salinity. ACTA ACUST UNITED AC 2016. [DOI: 10.4236/ajps.2016.79129] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Gruszka D, Janeczko A, Dziurka M, Pociecha E, Oklestkova J, Szarejko I. Barley Brassinosteroid Mutants Provide an Insight into Phytohormonal Homeostasis in Plant Reaction to Drought Stress. FRONTIERS IN PLANT SCIENCE 2016; 7:1824. [PMID: 27994612 PMCID: PMC5133261 DOI: 10.3389/fpls.2016.01824] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 11/18/2016] [Indexed: 05/02/2023]
Abstract
Brassinosteroids (BRs) are a class of steroid phytohormones, which regulate various processes of morphogenesis and physiology-from seed development to regulation of flowering and senescence. An accumulating body of evidence indicates that BRs take part in regulation of physiological reactions to various stress conditions, including drought. Many of the physiological functions of BRs are regulated by a complicated, and not fully elucidated network of interactions with metabolic pathways of other phytohormones. Therefore, the aim of this study was to characterize phytohormonal homeostasis in barley (Hordeum vulgare) in reaction to drought and validate role of BRs in regulation of this process. Material of this study included the barley cultivar "Bowman" and five Near-Isogenic Lines (NILs) representing characterized semi-dwarf mutants of several genes encoding enzymes participating in BR biosynthesis and signaling. Analysis of endogenous BRs concentrations in these NILs confirmed that their phenotypes result from abnormalities in BR metabolism. In general, concentrations of 18 compounds, representing various classes of phytohormones, including brassinosteroids, auxins, cytokinins, gibberellins, abscisic acid, salicylic acid and jasmonic acid were analyzed under control and drought conditions in the "Bowman" cultivar and the BR-deficient NILs. Drought induced a significant increase in accumulation of the biologically active form of BRs-castasterone in all analyzed genotypes. Another biologically active form of BRs-24-epi-brassinolide-was identified in one, BR-insensitive NIL under normal condition, but its accumulation was drought-induced in all analyzed genotypes. Analysis of concentration profiles of several compounds representing gibberellins allowed an insight into the BR-dependent regulation of gibberellin biosynthesis. The concentration of the gibberellic acid GA7 was significantly lower in all NILs when compared with the "Bowman" cultivar, indicating that GA7 biosynthesis represents an enzymatic step at which the stimulating effect of BRs on gibberellin biosynthesis occurs. Moreover, the accumulation of GA7 is significantly induced by drought in all the genotypes. Biosynthesis of jasmonic acid is also a BR-dependent process, as all the NILs accumulated much lower concentrations of this hormone when compared with the "Bowman" cultivar under normal condition, however the accumulation of jasmonic acid, abscisic acid and salicylic acid were significantly stimulated by drought.
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Affiliation(s)
- Damian Gruszka
- Department of Genetics, Faculty of Biology and Environment Protection, University of SilesiaKatowice, Poland
- *Correspondence: Damian Gruszka
| | - Anna Janeczko
- Franciszek Gorski Institute of Plant Physiology, Polish Academy of SciencesKrakow, Poland
| | - Michal Dziurka
- Franciszek Gorski Institute of Plant Physiology, Polish Academy of SciencesKrakow, Poland
| | - Ewa Pociecha
- Department of Plant Physiology, University of Agriculture in KrakowKrakow, Poland
| | - Jana Oklestkova
- Laboratory of Growth Regulators, Faculty of Science, Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany, Czech Academy of Sciences, Palacký UniversityOlomouc, Czechia
| | - Iwona Szarejko
- Department of Genetics, Faculty of Biology and Environment Protection, University of SilesiaKatowice, Poland
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Riemann M, Dhakarey R, Hazman M, Miro B, Kohli A, Nick P. Exploring Jasmonates in the Hormonal Network of Drought and Salinity Responses. FRONTIERS IN PLANT SCIENCE 2015; 6:1077. [PMID: 26648959 PMCID: PMC4665137 DOI: 10.3389/fpls.2015.01077] [Citation(s) in RCA: 131] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2015] [Accepted: 11/17/2015] [Indexed: 05/18/2023]
Abstract
Present and future food security is a critical issue compounded by the consequences of climate change on agriculture. Stress perception and signal transduction in plants causes changes in gene or protein expression which lead to metabolic and physiological responses. Phytohormones play a central role in the integration of different upstream signals into different adaptive outputs such as changes in the activity of ion-channels, protein modifications, protein degradation, and gene expression. Phytohormone biosynthesis and signaling, and recently also phytohormone crosstalk have been investigated intensively, but the function of jasmonates under abiotic stress is still only partially understood. Although most aspects of jasmonate biosynthesis, crosstalk and signal transduction appear to be similar for biotic and abiotic stress, novel aspects have emerged that seem to be unique for the abiotic stress response. Here, we review the knowledge on the role of jasmonates under drought and salinity. The crosstalk of jasmonate biosynthesis and signal transduction pathways with those of abscisic acid (ABA) is particularly taken into account due to the well-established, central role of ABA under abiotic stress. Likewise, the accumulating evidence of crosstalk of jasmonate signaling with other phytohormones is considered as important element of an integrated phytohormonal response. Finally, protein post-translational modification, which can also occur without de novo transcription, is treated with respect to its implications for phytohormone biosynthesis, signaling and crosstalk. To breed climate-resilient crop varieties, integrated understanding of the molecular processes is required to modulate and tailor particular nodes of the network to positively affect stress tolerance.
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Affiliation(s)
- Michael Riemann
- Molecular Cell Biology, Institute of Botany, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Rohit Dhakarey
- Molecular Cell Biology, Institute of Botany, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Mohamed Hazman
- Molecular Cell Biology, Institute of Botany, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Berta Miro
- Plant Breeding Genetics and Biotechnology Division, International Rice Research Institute, Makati, Philippines
| | - Ajay Kohli
- Plant Breeding Genetics and Biotechnology Division, International Rice Research Institute, Makati, Philippines
| | - Peter Nick
- Molecular Cell Biology, Institute of Botany, Karlsruhe Institute of Technology, Karlsruhe, Germany
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Liu Z, Zhang S, Sun N, Liu H, Zhao Y, Liang Y, Zhang L, Han Y. Functional diversity of jasmonates in rice. RICE (NEW YORK, N.Y.) 2015; 8:42. [PMID: 26054241 PMCID: PMC4773313 DOI: 10.1186/s12284-015-0042-9] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Accepted: 01/14/2015] [Indexed: 05/18/2023]
Abstract
Phytohormone jasmonates (JA) play essential roles in plants, such as regulating development and growth, responding to environmental changes, and resisting abiotic and biotic stresses. During signaling, JA interacts, either synergistically or antagonistically, with other hormones, such as salicylic acid (SA), gibberellin (GA), ethylene (ET), auxin, brassinosteroid (BR), and abscisic acid (ABA), to regulate gene expression in regulatory networks, conferring physiological and metabolic adjustments in plants. As an important staple crop, rice is a major nutritional source for human beings and feeds one third of the world's population. Recent years have seen significant progress in the understanding of the JA pathway in rice. In this review, we summarize the diverse functions of JA, and discuss the JA interplay with other hormones, as well as light, in this economically important crop. We believe that a better understanding of the JA pathway will lead to practical biotechnological applications in rice breeding and cultivation.
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Affiliation(s)
- Zheng Liu
- />College of Life Sciences, Hebei University, Baoding, China
| | - Shumin Zhang
- />College of Life Sciences, Hebei University, Baoding, China
| | - Ning Sun
- />The Affiliated School of Hebei Baoding Normal, Baoding, China
| | - Hongyun Liu
- />College of Life Sciences, Hebei University, Baoding, China
| | - Yanhong Zhao
- />College of Agriculture, Ludong University, Yantai, China
| | - Yuling Liang
- />College of Life Sciences, Hebei University, Baoding, China
| | - Liping Zhang
- />College of Life Sciences, Hebei University, Baoding, China
| | - Yuanhuai Han
- />School of Agriculture, Shanxi Agricultural University, Taigu, Jinzhong, China
- />Key Laboratory of Crop Gene Resources and Germplasm Enhancement on Loess Plateau, Ministry of Agriculture, Taiyuan, China
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Vaughan MM, Christensen S, Schmelz EA, Huffaker A, McAuslane HJ, Alborn HT, Romero M, Allen LH, Teal PEA. Accumulation of terpenoid phytoalexins in maize roots is associated with drought tolerance. PLANT, CELL & ENVIRONMENT 2015; 38:2195-207. [PMID: 25392907 DOI: 10.1111/pce.12482] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 11/04/2014] [Accepted: 11/05/2014] [Indexed: 05/25/2023]
Abstract
Maize (Zea mays) production, which is of global agro-economic importance, is largely limited by herbivore pests, pathogens and environmental conditions, such as drought. Zealexins and kauralexins belong to two recently identified families of acidic terpenoid phytoalexins in maize that mediate defence against both pathogen and insect attacks in aboveground tissues. However, little is known about their function in belowground organs and their potential to counter abiotic stress. In this study, we show that zealexins and kauralexins accumulate in roots in response to both biotic and abiotic stress including, Diabrotica balteata herbivory, Fusarium verticillioides infection, drought and high salinity. We find that the quantity of drought-induced phytoalexins is positively correlated with the root-to-shoot ratio of different maize varieties, and further demonstrate that mutant an2 plants deficient in kauralexin production are more sensitive to drought. The induction of phytoalexins in response to drought is root specific and does not influence phytoalexin levels aboveground; however, the accumulation of phytoalexins in one tissue may influence the induction capacity of other tissues.
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Affiliation(s)
- Martha M Vaughan
- Bacterial Foodborne Pathogens and Mycology, Agricultural Research Service, United States Department of Agriculture, Peoria, IL, 61604, USA
| | - Shawn Christensen
- Chemistry Research Unit, Center of Medical, Agricultural, and Veterinary Entomology, Agricultural Research Service, United States Department of Agriculture, Gainesville, FL, 32608, USA
| | - Eric A Schmelz
- Chemistry Research Unit, Center of Medical, Agricultural, and Veterinary Entomology, Agricultural Research Service, United States Department of Agriculture, Gainesville, FL, 32608, USA
| | - Alisa Huffaker
- Chemistry Research Unit, Center of Medical, Agricultural, and Veterinary Entomology, Agricultural Research Service, United States Department of Agriculture, Gainesville, FL, 32608, USA
| | - Heather J McAuslane
- Department of Entomology and Nematology, University of Florida, Gainesville, FL, 32611, USA
| | - Hans T Alborn
- Chemistry Research Unit, Center of Medical, Agricultural, and Veterinary Entomology, Agricultural Research Service, United States Department of Agriculture, Gainesville, FL, 32608, USA
| | - Maritza Romero
- Chemistry Research Unit, Center of Medical, Agricultural, and Veterinary Entomology, Agricultural Research Service, United States Department of Agriculture, Gainesville, FL, 32608, USA
| | - Leon Hartwell Allen
- Chemistry Research Unit, Center of Medical, Agricultural, and Veterinary Entomology, Agricultural Research Service, United States Department of Agriculture, Gainesville, FL, 32608, USA
| | - Peter E A Teal
- Chemistry Research Unit, Center of Medical, Agricultural, and Veterinary Entomology, Agricultural Research Service, United States Department of Agriculture, Gainesville, FL, 32608, USA
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93
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Shahzad R, Waqas M, Khan AL, Hamayun M, Kang SM, Lee IJ. Foliar application of methyl jasmonate induced physio-hormonal changes in Pisum sativum under diverse temperature regimes. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2015; 96:406-16. [PMID: 26379199 DOI: 10.1016/j.plaphy.2015.08.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Revised: 07/15/2015] [Accepted: 08/25/2015] [Indexed: 05/26/2023]
Abstract
Global climate change brings with it unwarranted shifts in both abiotic (heat stress, cold stress, wind, precipitation) and biotic (pathogens, pests) environmental factors, thus posing a threat to agricultural productivity across the world. In plants, lodging due to storms or herbivory causes wounding stress and consequently enhances endogenous jasmonates. In response, the plant growth is arrested as plant defense is prioritized. We pre-treated pea plants with elevated methyl jasmonate (MeJA) levels i.e. 50 μM, 100 μM and 200 μM under controlled growth chamber conditions. The pre-treated plants were then kept at 40 °C (heat stress--HS), 4 °C (cold stress--CS) and 20 °C (optimum/control temperature--OT) for 72 h. The effect of such treatments on plant growth attributes, photosynthesis, stomatal conductance, cell death rate, and regulation of endogenous hormones were observed. Elevated MeJA application hindered plant growth attributes under HS, CS and OT conditions. Moreover, elevated MeJA levels lowered the rate of photosynthesis and stomatal conductance, induced stomatal closure, caused higher cells mortality in leaves under HS, CS, and OT conditions. Endogenous ABA contents significantly declined in all MeJA treatments under HS and OT, but increased under CS conditions. Exogenous MeJA enhanced endogenous jasmonic acid contents of pea plants, but altered endogenous salicylic acid contents under varying temperatures. Current study shows that higher concentrations of exogenous MeJA strengthen plant defense mechanism by hindering plant growth under stress conditions.
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Affiliation(s)
- Raheem Shahzad
- School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - Muhammad Waqas
- School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea; Department of Agriculture Extension, Buner 19290, Pakistan
| | - Abdul Latif Khan
- UoN Chair of Oman's Medicinal Plants & Marine Natural Products, University of Nizwa, 616 Nizwa, Oman
| | - Muhammad Hamayun
- School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea; Department of Botany, Abdul Wali Khan University Mardan, Pakistan
| | - Sang-Mo Kang
- School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - In-Jung Lee
- School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea.
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94
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Yuan Z, Zhang D. Roles of jasmonate signalling in plant inflorescence and flower development. CURRENT OPINION IN PLANT BIOLOGY 2015; 27:44-51. [PMID: 26125498 DOI: 10.1016/j.pbi.2015.05.024] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 05/18/2015] [Accepted: 05/19/2015] [Indexed: 05/21/2023]
Abstract
Development of inflorescences and flowers in plants is controlled by the combined action of environmental and genetic signals. Investigations reveal that the phytohormone jasmonate (JA) plays a critical function in plant reproduction such as male fertility, sex determination and seed maturation. Here, we review recent progress on JA synthesis, signalling, the interplay between JAs and other hormones, and regulatory network of JA in controlling the development of inflorescence, flower and the male organ. The conserved and diversified roles of JAs in meristem transition and specification of flower organ identity and number, and multiple regulatory networks of JAs in stamen development are highlighted. Further, this review provides perspectives on future research endeavors to elucidate mechanisms underlying JAs homeostasis and transport during plant reproductive development.
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Affiliation(s)
- Zheng Yuan
- Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 20040, China; Key Laboratory of Crop Marker-Assisted Breeding of Huaian Municipality, Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental Protection, Huaian Normal University, Jiangsu 223300, China
| | - Dabing Zhang
- Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 20040, China; School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, South Australia 5064, Australia; Key Laboratory of Crop Marker-Assisted Breeding of Huaian Municipality, Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental Protection, Huaian Normal University, Jiangsu 223300, China.
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95
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de Ollas C, Arbona V, Gómez-Cadenas A. Jasmonoyl isoleucine accumulation is needed for abscisic acid build-up in roots of Arabidopsis under water stress conditions. PLANT, CELL & ENVIRONMENT 2015; 38:2157-70. [PMID: 25789569 DOI: 10.1111/pce.12536] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Revised: 03/02/2015] [Accepted: 03/09/2015] [Indexed: 05/05/2023]
Abstract
Phytohormones are central players in sensing and signalling numerous environmental conditions like drought. In this work, hormone profiling together with gene expression of key enzymes involved in abscisic acid (ABA) and jasmonate biosynthesis were studied in desiccating Arabidopsis roots. Jasmonic acid (JA) content transiently increased after stress imposition whereas progressive and concomitant ABA and Jasmonoyl Isoleucine (JA-Ile) accumulations were detected. Molecular data suggest that, at least, part of the hormonal regulation takes place at the biosynthetic level. These observations also point to a possible involvement of jasmonates on ABA biosynthesis under stress. To test this hypothesis, mutants impaired in jasmonate biosynthesis (opr3, lox6 and jar1-1) and in JA-dependent signalling (coi1) were employed. Results showed that the early JA accumulation leading to JA-Ile build up was necessary for an ABA increase in roots under two different water stress conditions. Signal transduction between water stress-induced JA-Ile accumulation and COI1 is necessary for a full induction of the ABA biosynthesis pathway and subsequent hormone accumulation in roots of Arabidopsis plants. The present work adds a level of interaction between jasmonates and ABA at the biosynthetic level.
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Affiliation(s)
- Carlos de Ollas
- Departamento de Ciencias Agrarias y del Medio Natural, Universitat Jaume I, Campus Riu Sec, Castelló de la Plana, E-12071, Spain
| | - Vicent Arbona
- Departamento de Ciencias Agrarias y del Medio Natural, Universitat Jaume I, Campus Riu Sec, Castelló de la Plana, E-12071, Spain
| | - Aurelio Gómez-Cadenas
- Departamento de Ciencias Agrarias y del Medio Natural, Universitat Jaume I, Campus Riu Sec, Castelló de la Plana, E-12071, Spain
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96
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Corso M, Vannozzi A, Maza E, Vitulo N, Meggio F, Pitacco A, Telatin A, D'Angelo M, Feltrin E, Negri AS, Prinsi B, Valle G, Ramina A, Bouzayen M, Bonghi C, Lucchin M. Comprehensive transcript profiling of two grapevine rootstock genotypes contrasting in drought susceptibility links the phenylpropanoid pathway to enhanced tolerance. JOURNAL OF EXPERIMENTAL BOTANY 2015; 66:5739-52. [PMID: 26038306 PMCID: PMC4566973 DOI: 10.1093/jxb/erv274] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
In light of ongoing climate changes in wine-growing regions, the selection of drought-tolerant rootstocks is becoming a crucial factor for developing a sustainable viticulture. In this study, M4, a new rootstock genotype that shows tolerance to drought, was compared from a genomic and transcriptomic point of view with the less drought-tolerant genotype 101.14. The root and leaf transcriptome of both 101.14 and the M4 rootstock genotype was analysed, following exposure to progressive drought conditions. Multifactorial analyses indicated that stress treatment represents the main factor driving differential gene expression in roots, whereas in leaves the genotype is the prominent factor. Upon stress, M4 roots and leaves showed a higher induction of resveratrol and flavonoid biosynthetic genes, respectively. The higher expression of VvSTS genes in M4, confirmed by the accumulation of higher levels of resveratrol in M4 roots compared with 101.14, was coupled to an up-regulation of several VvWRKY transcription factors. Interestingly, VvSTS promoter analyses performed on both the resequenced genomes highlighted a significantly higher number of W-BOX elements in the tolerant genotype. It is proposed that the elevated synthesis of resveratrol in M4 roots upon water stress could enhance the plant's ability to cope with the oxidative stress usually associated with water deficit.
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Affiliation(s)
- Massimiliano Corso
- Department of Agronomy, Food, Natural resources, Animals and Environment (DAFNAE), University of Padova Agripolis, 35020 Legnaro, Italy Centro Interdipartimentale per la Ricerca in Viticoltura ed Enologia (CIRVE), Via XXVIII Aprile, 14-31015 Conegliano (TV), Italy
| | - Alessandro Vannozzi
- Department of Agronomy, Food, Natural resources, Animals and Environment (DAFNAE), University of Padova Agripolis, 35020 Legnaro, Italy Centro Interdipartimentale per la Ricerca in Viticoltura ed Enologia (CIRVE), Via XXVIII Aprile, 14-31015 Conegliano (TV), Italy
| | - Elie Maza
- Genomics and Biotechnology of Fruit (GBF) Laboratory, Institut National Polytechnique de Toulouse, Avenue de l'Agrobiopole, F-31326 Castanet-Tolosan Cedex (Toulouse), France
| | - Nicola Vitulo
- CRIBI, University of Padova, viale G. Colombo 3, 35121 Padova, Italy
| | - Franco Meggio
- Department of Agronomy, Food, Natural resources, Animals and Environment (DAFNAE), University of Padova Agripolis, 35020 Legnaro, Italy Centro Interdipartimentale per la Ricerca in Viticoltura ed Enologia (CIRVE), Via XXVIII Aprile, 14-31015 Conegliano (TV), Italy
| | - Andrea Pitacco
- Department of Agronomy, Food, Natural resources, Animals and Environment (DAFNAE), University of Padova Agripolis, 35020 Legnaro, Italy Centro Interdipartimentale per la Ricerca in Viticoltura ed Enologia (CIRVE), Via XXVIII Aprile, 14-31015 Conegliano (TV), Italy
| | - Andrea Telatin
- CRIBI, University of Padova, viale G. Colombo 3, 35121 Padova, Italy
| | - Michela D'Angelo
- CRIBI, University of Padova, viale G. Colombo 3, 35121 Padova, Italy
| | - Erika Feltrin
- CRIBI, University of Padova, viale G. Colombo 3, 35121 Padova, Italy
| | - Alfredo Simone Negri
- Department of Agricultural and Environmental Sciences-Production, Landscape, Agroenergy (DiSAA), University of Milano, Milano 20133, Italy
| | - Bhakti Prinsi
- Department of Agricultural and Environmental Sciences-Production, Landscape, Agroenergy (DiSAA), University of Milano, Milano 20133, Italy
| | - Giorgio Valle
- CRIBI, University of Padova, viale G. Colombo 3, 35121 Padova, Italy
| | - Angelo Ramina
- Department of Agronomy, Food, Natural resources, Animals and Environment (DAFNAE), University of Padova Agripolis, 35020 Legnaro, Italy Centro Interdipartimentale per la Ricerca in Viticoltura ed Enologia (CIRVE), Via XXVIII Aprile, 14-31015 Conegliano (TV), Italy
| | - Mondher Bouzayen
- Genomics and Biotechnology of Fruit (GBF) Laboratory, Institut National Polytechnique de Toulouse, Avenue de l'Agrobiopole, F-31326 Castanet-Tolosan Cedex (Toulouse), France
| | - Claudio Bonghi
- Department of Agronomy, Food, Natural resources, Animals and Environment (DAFNAE), University of Padova Agripolis, 35020 Legnaro, Italy Centro Interdipartimentale per la Ricerca in Viticoltura ed Enologia (CIRVE), Via XXVIII Aprile, 14-31015 Conegliano (TV), Italy
| | - Margherita Lucchin
- Department of Agronomy, Food, Natural resources, Animals and Environment (DAFNAE), University of Padova Agripolis, 35020 Legnaro, Italy Centro Interdipartimentale per la Ricerca in Viticoltura ed Enologia (CIRVE), Via XXVIII Aprile, 14-31015 Conegliano (TV), Italy
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97
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Tamaki H, Reguera M, Abdel-Tawab YM, Takebayashi Y, Kasahara H, Blumwald E. Targeting Hormone-Related Pathways to Improve Grain Yield in Rice: A Chemical Approach. PLoS One 2015; 10:e0131213. [PMID: 26098557 PMCID: PMC4476611 DOI: 10.1371/journal.pone.0131213] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Accepted: 05/29/2015] [Indexed: 01/18/2023] Open
Abstract
Sink/source relationships, regulating the mobilization of stored carbohydrates from the vegetative tissues to the grains, are of key importance for grain filling and grain yield. We used different inhibitors of plant hormone action to assess their effects on grain yield and on the expression of hormone-associated genes. Among the tested chemicals, 2-indol-3-yl-4-oxo-4-phenylbutanoic acid (PEO-IAA; antagonist of auxin receptor), nordihydroguaiaretic acid (NDGA; abscisic acid (ABA) biosynthesis inhibitor), and 2-aminoisobutyric acid (AIB; ethylene biosynthesis inhibitor) improved grain yield in a concentration dependent manner. These effects were also dependent on the plant developmental stage. NDGA and AIB treatments induced an increase in photosynthesis in flag leaves concomitant to the increments of starch content in flag leaves and grains. NDGA inhibited the expression of ABA-responsive gene, but did not significantly decrease ABA content. Instead, NDGA significantly decreased jasmonic acid and jasmonic acid-isoleucine. Our results support the notion that the specific inhibition of jasmonic acid and ethylene biosynthesis resulted in grain yield increase in rice.
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Affiliation(s)
- Hiroaki Tamaki
- Department of Plant Sciences, University of California Davis, Davis, California 95616, United States of America
- Health and Crop Sciences Research Laboratory, Sumitomo Chemical Co. Ltd., Hyogo 665–8555, Japan
| | - Maria Reguera
- Department of Plant Sciences, University of California Davis, Davis, California 95616, United States of America
| | - Yasser M. Abdel-Tawab
- Department of Plant Sciences, University of California Davis, Davis, California 95616, United States of America
| | - Yumiko Takebayashi
- RIKEN Center for Sustainable Resource Science, Yokohama, Kanagawa 230–0045, Japan
| | - Hiroyuki Kasahara
- RIKEN Center for Sustainable Resource Science, Yokohama, Kanagawa 230–0045, Japan
| | - Eduardo Blumwald
- Department of Plant Sciences, University of California Davis, Davis, California 95616, United States of America
- * E-mail:
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98
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Bang SW, Park SH, Kim YS, Choi YD, Kim JK. The activities of four constitutively expressed promoters in single-copy transgenic rice plants for two homozygous generations. PLANTA 2015; 241:1529-1541. [PMID: 25809149 DOI: 10.1007/s00425-015-2278-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Accepted: 03/11/2015] [Indexed: 06/04/2023]
Abstract
We have characterized four novel constitutive promoters ARP1, H3F3, HSP and H2BF3 that are active in all tissues/stages of transgenic plants and stable over two homozygous generations. Gene promoters that are active and stable over several generations in transgenic plants are valuable tools for plant research and biotechnology. In this study, we characterized four putative constitutive promoters (ARP1, H3F3, HSP and H2BF3) in transgenic rice plants. Promoter regions were fused to the green fluorescence protein (GFP) reporter gene and transformed into rice. Single-copy transgenic lines were then selected and promoter activity was analyzed in various organs and tissues of two successive homozygous generations. All four promoters showed a broad expression profile in most tissues and developmental stages, and indeed the expression of the ARP1 and H3F3 promoters was even greater than that of the PGD1 promoter, a previously described constitutive promoter that has been used in transgenic rice. This observation was based on expression levels in leaves, roots, dry seeds and flowers in both the T2 and T3 generations. Each promoter exhibited comparable levels of activity over two homozygous generations with no sign of transgene silencing, which is an important characteristic of promoters to be used in crop biotechnology applications. These promoters therefore have considerable potential value for the stable and constitutive expression of transgenes in monocotyledonous crops.
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Affiliation(s)
- Seung Woon Bang
- Crop Biotechnology Institute, GreenBio Science and Technology, Seoul National University, Pyeongchang, 232-916, Korea,
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99
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Li Y, Chen YY, Yang SG, Tian WM. Cloning and characterization of HbMT2a, a metallothionein gene from Hevea brasiliensis Muell. Arg differently responds to abiotic stress and heavy metals. Biochem Biophys Res Commun 2015; 461:95-101. [DOI: 10.1016/j.bbrc.2015.03.175] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Accepted: 03/30/2015] [Indexed: 10/23/2022]
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100
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Ozone-Induced Rice Grain Yield Loss Is Triggered via a Change in Panicle Morphology That Is Controlled by ABERRANT PANICLE ORGANIZATION 1 Gene. PLoS One 2015; 10:e0123308. [PMID: 25923431 PMCID: PMC4414449 DOI: 10.1371/journal.pone.0123308] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Accepted: 03/03/2015] [Indexed: 11/25/2022] Open
Abstract
Rice grain yield is predicted to decrease in the future because of an increase in tropospheric ozone concentration. However, the underlying mechanisms are unclear. Here, we investigated the responses to ozone of two rice (Oryza Sativa L.) cultivars, Sasanishiki and Habataki. Sasanishiki showed ozone-induced leaf injury, but no grain yield loss. By contrast, Habataki showed grain yield loss with minimal leaf injury. A QTL associated with grain yield loss caused by ozone was identified in Sasanishiki/Habataki chromosome segment substitution lines and included the ABERRANT PANICLE ORGANIZATION 1 (APO1) gene. The Habataki allele of the APO1 locus in a near-isogenic line also resulted in grain yield loss upon ozone exposure, suggesting APO1 involvement in ozone-induced yield loss. Only a few differences in the APO1 amino acid sequences were detected between the cultivars, but the APO1 transcript level was oppositely regulated by ozone exposure: i.e., it increased in Sasanishiki and decreased in Habataki. Interestingly, the levels of some phytohormones (jasmonic acid, jasmonoyl-L-isoleucine, and abscisic acid) known to be involved in attenuation of ozone-induced leaf injury tended to decrease in Sasanishiki but to increase in Habataki upon ozone exposure. These data indicate that ozone-induced grain yield loss in Habataki is caused by a reduction in the APO1 transcript level through an increase in the levels of phytohormones that reduce leaf damage.
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