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Ly LK, Ho TM, Bui TP, Nguyen LT, Phan Q, Le NT, Khuat LTM, Le LH, Chu HH, Pham NB, Do PT. CRISPR/Cas9 targeted mutations of OsDSG1 gene enhanced salt tolerance in rice. Funct Integr Genomics 2024; 24:70. [PMID: 38565780 DOI: 10.1007/s10142-024-01347-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 03/19/2024] [Accepted: 03/19/2024] [Indexed: 04/04/2024]
Abstract
Salinization is one of the leading causes of arable land shrinkage and rice yield decline, recently. Therefore, developing and utilizing salt-tolerant rice varieties have been seen as a crucial and urgent strategy to reduce the effects of saline intrusion and protect food security worldwide. In the current study, the CRISPR/Cas9 system was utilized to induce targeted mutations in the coding sequence of the OsDSG1, a gene involved in the ubiquitination pathway and the regulation of biochemical reactions in rice. The CRISPR/Cas9-induced mutations of the OsDSG1 were generated in a local rice cultivar and the mutant inheritance was validated at different generations. The OsDSG1 mutant lines showed an enhancement in salt tolerance compared to wild type plants at both germination and seedling stages indicated by increases in plant height, root length, and total fresh weight as well as the total chlorophyll and relative water contents under the salt stress condition. In addition, lower proline and MDA contents were observed in mutant rice as compared to wild type plants in the presence of salt stress. Importantly, no effect on seed germination and plant growth parameters was recorded in the CRISRP/Cas9-induced mutant rice under the normal condition. This study again indicates the involvement of the OsDSG1 gene in the salt resistant mechanism in rice and provides a potential strategy to enhance the tolerance of local rice varieties to the salt stress.
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Affiliation(s)
- Linh Khanh Ly
- Institute of Biotechnology, Vietnam Academy of Science and Technology, A10 Building, 18 Hoang Quoc Viet, Hanoi, Vietnam
| | - Tuong Manh Ho
- Institute of Biotechnology, Vietnam Academy of Science and Technology, A10 Building, 18 Hoang Quoc Viet, Hanoi, Vietnam
| | - Thao Phuong Bui
- Institute of Biotechnology, Vietnam Academy of Science and Technology, A10 Building, 18 Hoang Quoc Viet, Hanoi, Vietnam
| | - Linh Thi Nguyen
- Institute of Biotechnology, Vietnam Academy of Science and Technology, A10 Building, 18 Hoang Quoc Viet, Hanoi, Vietnam
| | - Quyen Phan
- Institute of Biotechnology, Vietnam Academy of Science and Technology, A10 Building, 18 Hoang Quoc Viet, Hanoi, Vietnam
| | - Ngoc Thu Le
- Institute of Biotechnology, Vietnam Academy of Science and Technology, A10 Building, 18 Hoang Quoc Viet, Hanoi, Vietnam
| | | | | | - Ha Hoang Chu
- Institute of Biotechnology, Vietnam Academy of Science and Technology, A10 Building, 18 Hoang Quoc Viet, Hanoi, Vietnam
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Ngoc Bich Pham
- Institute of Biotechnology, Vietnam Academy of Science and Technology, A10 Building, 18 Hoang Quoc Viet, Hanoi, Vietnam.
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam.
| | - Phat Tien Do
- Institute of Biotechnology, Vietnam Academy of Science and Technology, A10 Building, 18 Hoang Quoc Viet, Hanoi, Vietnam.
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam.
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Padmavathi G, Bangale U, Rao K, Balakrishnan D, Arun M, Singh RK, Sundaram RM. Progress and prospects in harnessing wild relatives for genetic enhancement of salt tolerance in rice. FRONTIERS IN PLANT SCIENCE 2024; 14:1253726. [PMID: 38371332 PMCID: PMC10870985 DOI: 10.3389/fpls.2023.1253726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 12/13/2023] [Indexed: 02/20/2024]
Abstract
Salt stress is the second most devastating abiotic stress after drought and limits rice production globally. Genetic enhancement of salinity tolerance is a promising and cost-effective approach to achieve yield gains in salt-affected areas. Breeding for salinity tolerance is challenging because of the genetic complexity of the response of rice plants to salt stress, as it is governed by minor genes with low heritability and high G × E interactions. The involvement of numerous physiological and biochemical factors further complicates this complexity. The intensive selection and breeding efforts targeted towards the improvement of yield in the green-revolution era inadvertently resulted in the gradual disappearance of the loci governing salinity tolerance and a significant reduction in genetic variability among cultivars. The limited utilization of genetic resources and narrow genetic base of improved cultivars have resulted in a plateau in response to salinity tolerance in modern cultivars. Wild species are an excellent genetic resource for broadening the genetic base of domesticated rice. Exploiting novel genes of underutilized wild rice relatives to restore salinity tolerance loci eliminated during domestication can result in significant genetic gain in rice cultivars. Wild species of rice, Oryza rufipogon and Oryza nivara, have been harnessed in the development of a few improved rice varieties like Jarava and Chinsura Nona 2. Furthermore, increased access to sequence information and enhanced knowledge about the genomics of salinity tolerance in wild relatives has provided an opportunity for the deployment of wild rice accessions in breeding programs, while overcoming the cross-incompatibility and linkage drag barriers witnessed in wild hybridization. Pre-breeding is another avenue for building material that are ready for utilization in breeding programs. Efforts should be directed towards systematic collection, evaluation, characterization, and deciphering salt tolerance mechanisms in wild rice introgression lines and deploying untapped novel loci to improve salinity tolerance in rice cultivars. This review highlights the potential of wild relatives of Oryza to enhance tolerance to salinity, track the progress of work, and provide a perspective for future research.
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Affiliation(s)
- Guntupalli Padmavathi
- Crop Improvement Section, Plant Breeding, ICAR-Indian Institute of Rice Research (ICAR-IIRR), Hyderabad, India
| | - Umakanth Bangale
- Crop Improvement Section, Plant Breeding, ICAR-Indian Institute of Rice Research (ICAR-IIRR), Hyderabad, India
| | - K. Nagendra Rao
- Genetics and Plant Breeding, Sugarcane Research Station, Vuyyuru, India
| | - Divya Balakrishnan
- Crop Improvement Section, Plant Breeding, ICAR-Indian Institute of Rice Research (ICAR-IIRR), Hyderabad, India
| | - Melekote Nagabhushan Arun
- Crop Production Section, Agronomy, ICAR-Indian Institute of Rice Research (ICAR-IIRR), Hyderabad, India
| | - Rakesh Kumar Singh
- Crop Diversification and Genetics Section, International Center for Biosaline Agriculture (ICBA), Dubai, United Arab Emirates
| | - Raman Meenakshi Sundaram
- Crop Improvement Section, Plant Breeding, ICAR-Indian Institute of Rice Research (ICAR-IIRR), Hyderabad, India
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Wang J, Ao M, Ma A, Yu J, Guo P, Huang S, Peng X, Yun DJ, Xu ZY. A Mitochondrial Localized Chaperone Regulator OsBAG6 Functions in Saline-Alkaline Stress Tolerance in Rice. RICE (NEW YORK, N.Y.) 2024; 17:10. [PMID: 38252225 PMCID: PMC10803725 DOI: 10.1186/s12284-024-00686-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 01/09/2024] [Indexed: 01/23/2024]
Abstract
B-cell lymphoma 2 (Bcl-2)-associated athanogene (BAG) family genes play prominent roles in regulating plant growth, development, and stress response. Although the molecular mechanism underlying BAG's response to abiotic stress has been studied in Arabidopsis, the function of OsBAG underlying saline-alkaline stress tolerance in rice remains unclear. In this study, OsBAG6, a chaperone regulator localized to mitochondria, was identified as a novel negative regulator of saline-alkaline stress tolerance in rice. The expression level of OsBAG6 was induced by high concentration of salt, high pH, heat and abscisic acid treatments. Overexpression of OsBAG6 in rice resulted in significantly reduced plant heights, grain size, grain weight, as well as higher sensitivity to saline-alkaline stress. By contrast, the osbag6 loss-of-function mutants exhibited decreased sensitivity to saline-alkaline stress. The transcriptomic analysis uncovered differentially expressed genes related to the function of "response to oxidative stress", "defense response", and "secondary metabolite biosynthetic process" in the shoots and roots of OsBAG6-overexpressing transgenic lines. Furthermore, cytoplasmic levels of Ca2+ increase rapidly in plants exposed to saline-alkaline stress. OsBAG6 bound to calcium sensor OsCaM1-1 under normal conditions, which was identified by comparative interactomics, but not in the presence of elevated Ca2+. Released OsCaM1-1 saturated with Ca2+ is then able to regulate downstream stress-responsive genes as part of the response to saline-alkaline stress. OsBAG6 also interacted with energy biosynthesis and metabolic pathway proteins that are involved in plant growth and saline-alkaline stress response mechanisms. This study reveals a novel function for mitochondrial localized OsBAG6 proteins in the saline-alkaline stress response alongside OsCaM1-1.
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Affiliation(s)
- Jie Wang
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, 130024, China
| | - Min Ao
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, 130024, China
| | - Ao Ma
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, 130024, China
| | - Jinlei Yu
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, 130024, China
| | - Peng Guo
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, 130024, China
| | - Shuangzhan Huang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, 130062, China
| | - Xiaoyuan Peng
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, 130024, China
| | - Dae-Jin Yun
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, 130024, China
- Department of Biomedical Science and Engineering, Konkuk University, Seoul, 132-798, South Korea
| | - Zheng-Yi Xu
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, 130024, China.
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Guo M, Li Z, Wang L, Xu T, Huang H, Kanwar MK, Yang P, Zhou J. BAG8 positively regulates cold stress tolerance by modulating photosystem, antioxidant system and protein protection in Solanum lycopersicum. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 206:108267. [PMID: 38091937 DOI: 10.1016/j.plaphy.2023.108267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 11/22/2023] [Accepted: 12/06/2023] [Indexed: 02/15/2024]
Abstract
The B-cell lymphoma 2 (Bcl-2)-associated athanogene (BAG) family is a relatively conserved and multifunctional co-chaperones in animals and plants, which can flexibly interact with a variety of proteins and regulate various processes from growth and development to stress response. However, compared with animals, the function of BAG family in plant remains largely unknown, especially in response to cold stress. In this study, we have found that the expression of BAG8 was significantly induced in tomato under cold stress. Results showed that bag8 mutants exhibit significantly reduced tolerance towards cold stress, while BAG8 overexpressing lines were relatively resistant as reflected by the phenotype and membrane peroxidation. Measuring of gas exchange parameters, photosystem I (PSI) and photosystem II (PSII) of tomato leaves under cold stress further revealed that BAG8 mitigated cold-induced damage in photosynthetic system. Additionally, bag8 mutants exhibited more cold-induced reactive oxygen species, which were substantially normalized in BAG8 overexpressing plants. Nevertheless, the activities of antioxidant enzymes which were compromised in bag8 mutants were improved in BAG8 overexpressing plants facing cold stress. Additionally, BAG8 interacted with heat shock protein Hsp70 and protein phosphatase PP2A both in vitro and in vivo. Our results demonstrate that BAG8 plays a positive role in cold tolerance in tomato probably by the improvement of photosystems and antioxidant systems, and by interacting with Hsp70 involved in photosynthesis and PP2A involved in stomatal development.
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Affiliation(s)
- Mingyue Guo
- Department of Horticulture, Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Yuhangtang Road 866, Hangzhou, 310058, China
| | - Zhichao Li
- Department of Horticulture, Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Yuhangtang Road 866, Hangzhou, 310058, China
| | - Leilei Wang
- Department of Horticulture, Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Yuhangtang Road 866, Hangzhou, 310058, China
| | - Tong Xu
- Department of Horticulture, Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Yuhangtang Road 866, Hangzhou, 310058, China; Hainan Institute, Zhejiang University, Sanya, China
| | - Huamin Huang
- Department of Horticulture, Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Yuhangtang Road 866, Hangzhou, 310058, China
| | - Mukesh Kumar Kanwar
- Department of Horticulture, Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Yuhangtang Road 866, Hangzhou, 310058, China; Department of Environmental Sciences, Dr Harisingh Gour Vishwavidyalaya, Sagar, Madhya Pradesh, India
| | - Ping Yang
- Agricultural Experiment Station, Zhejiang University, Hangzhou, 310058, China
| | - Jie Zhou
- Department of Horticulture, Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Yuhangtang Road 866, Hangzhou, 310058, China; Hainan Institute, Zhejiang University, Sanya, China; Key Laboratory of Horticultural Plants Growth, Development and Quality Improvement, Ministry of Agriculture and Rural Affairs of China, Yuhangtang Road 866, Hangzhou, 310058, China.
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5
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Thanthrige N, Weston-Olliver G, Das Bhowmik S, Friedl J, Rowlings D, Kabbage M, Ferguson BJ, Mundree S, Williams B. The cytoprotective co-chaperone, AtBAG4, supports increased nodulation and seed protein content in chickpea without yield penalty. Sci Rep 2023; 13:18553. [PMID: 37899486 PMCID: PMC10613627 DOI: 10.1038/s41598-023-45771-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 10/24/2023] [Indexed: 10/31/2023] Open
Abstract
Drought and extreme temperatures significantly limit chickpea productivity worldwide. The regulation of plant programmed cell death pathways is emerging as a key component of plant stress responses to maintain homeostasis at the cellular-level and a potential target for crop improvement against environmental stresses. Arabidopsis thaliana Bcl-2 associated athanogene 4 (AtBAG4) is a cytoprotective co-chaperone that is linked to plant responses to environmental stress. Here, we investigate whether exogenous expression of AtBAG4 impacts nodulation and nitrogen fixation. Transgenic chickpea lines expressing AtBAG4 are more drought tolerant and produce higher yields under drought stress. Furthermore, AtBAG4 expression supports higher nodulation, photosynthetic levels, nitrogen fixation and seed nitrogen content under well-watered conditions when the plants were inoculated with Mesorhizobium ciceri. Together, our findings illustrate the potential use of cytoprotective chaperones to improve crop performance at least in the greenhouse in future uncertain climates with little to no risk to yield under well-watered and water-deficient conditions.
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Affiliation(s)
- Nipuni Thanthrige
- Centre for Agriculture and the Bioeconomy, Queensland University of Technology, Brisbane, QLD, Australia
- School of Biology and Environmental Science, Queensland University of Technology, Brisbane, QLD, Australia
| | - Grace Weston-Olliver
- Centre for Agriculture and the Bioeconomy, Queensland University of Technology, Brisbane, QLD, Australia
| | - Sudipta Das Bhowmik
- Centre for Agriculture and the Bioeconomy, Queensland University of Technology, Brisbane, QLD, Australia
| | - Johannes Friedl
- Centre for Agriculture and the Bioeconomy, Queensland University of Technology, Brisbane, QLD, Australia
- Department of Forest and Soil Sciences, Institute of Soil Research, University of Natural Resources and Life Sciences Vienna, Vienna, Austria
| | - David Rowlings
- Centre for Agriculture and the Bioeconomy, Queensland University of Technology, Brisbane, QLD, Australia
| | - Mehdi Kabbage
- Department of Plant Pathology, University of Wisconsin-Madison, Madison, WI, USA
| | - Brett J Ferguson
- School of Agriculture and Food Sciences, University of Queensland, Brisbane, QLD, Australia
| | - Sagadevan Mundree
- Centre for Agriculture and the Bioeconomy, Queensland University of Technology, Brisbane, QLD, Australia
- School of Biology and Environmental Science, Queensland University of Technology, Brisbane, QLD, Australia
| | - Brett Williams
- Centre for Agriculture and the Bioeconomy, Queensland University of Technology, Brisbane, QLD, Australia.
- School of Biology and Environmental Science, Queensland University of Technology, Brisbane, QLD, Australia.
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Atta K, Mondal S, Gorai S, Singh AP, Kumari A, Ghosh T, Roy A, Hembram S, Gaikwad DJ, Mondal S, Bhattacharya S, Jha UC, Jespersen D. Impacts of salinity stress on crop plants: improving salt tolerance through genetic and molecular dissection. FRONTIERS IN PLANT SCIENCE 2023; 14:1241736. [PMID: 37780527 PMCID: PMC10540871 DOI: 10.3389/fpls.2023.1241736] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Accepted: 08/14/2023] [Indexed: 10/03/2023]
Abstract
Improper use of water resources in irrigation that contain a significant amount of salts, faulty agronomic practices such as improper fertilization, climate change etc. are gradually increasing soil salinity of arable lands across the globe. It is one of the major abiotic factors that inhibits overall plant growth through ionic imbalance, osmotic stress, oxidative stress, and reduced nutrient uptake. Plants have evolved with several adaptation strategies at morphological and molecular levels to withstand salinity stress. Among various approaches, harnessing the crop genetic variability across different genepools and developing salinity tolerant crop plants offer the most sustainable way of salt stress mitigation. Some important major genetic determinants controlling salinity tolerance have been uncovered using classical genetic approaches. However, its complex inheritance pattern makes breeding for salinity tolerance challenging. Subsequently, advances in sequence based breeding approaches and functional genomics have greatly assisted in underpinning novel genetic variants controlling salinity tolerance in plants at the whole genome level. This current review aims to shed light on physiological, biochemical, and molecular responses under salt stress, defense mechanisms of plants, underlying genetics of salt tolerance through bi-parental QTL mapping and Genome Wide Association Studies, and implication of Genomic Selection to breed salt tolerant lines.
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Affiliation(s)
- Kousik Atta
- ICAR-Indian Agricultural Research Institute, New Delhi, India
- Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, West Bengal, India
| | - Saptarshi Mondal
- Department of Crop and Soil Sciences, University of Georgia, Griffin, GA, United States
| | - Shouvik Gorai
- Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, West Bengal, India
| | - Aditya Pratap Singh
- Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, West Bengal, India
- School of Agriculture, GIET University, Gunupur, Rayagada, Odisha, India
| | - Amrita Kumari
- Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, West Bengal, India
| | - Tuhina Ghosh
- ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Arkaprava Roy
- ICAR-Indian Agricultural Research Institute, New Delhi, India
- ICAR- National Institute of Biotic Stress Management, Raipur, India
| | - Suryakant Hembram
- WBAS (Research), Government of West Bengal, Field Crop Research Station, Burdwan, India
| | | | - Subhasis Mondal
- Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, West Bengal, India
| | | | | | - David Jespersen
- Department of Crop and Soil Sciences, University of Georgia, Griffin, GA, United States
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Rahman MA, Ullah H. Receptor for Activated C Kinase1B (RACK1B) Delays Salinity-Induced Senescence in Rice Leaves by Regulating Chlorophyll Degradation. PLANTS (BASEL, SWITZERLAND) 2023; 12:2385. [PMID: 37376011 DOI: 10.3390/plants12122385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 06/17/2023] [Accepted: 06/19/2023] [Indexed: 06/29/2023]
Abstract
The widely conserved Receptor for Activated C Kinase1 (RACK1) protein is a WD-40 type scaffold protein that regulates diverse environmental stress signal transduction pathways. Arabidopsis RACK1A has been reported to interact with various proteins in salt stress and Light-Harvesting Complex (LHC) pathways. However, the mechanism of how RACK1 contributes to the photosystem and chlorophyll metabolism in stress conditions remains elusive. In this study, using T-DNA-mediated activation tagging transgenic rice (Oryza sativa L.) lines, we show that leaves from rice RACK1B gene (OsRACK1B) gain-of-function (RACK1B-OX) plants exhibit the stay-green phenotype under salinity stress. In contrast, leaves from down-regulated OsRACK1B (RACK1B-UX) plants display an accelerated yellowing. qRT-PCR analysis revealed that several genes which encode chlorophyll catabolic enzymes (CCEs) are differentially expressed in both RACK1B-OX and RACK1B-UX rice plants. In addition to CCEs, stay-green (SGR) is a key component that forms the SGR-CCE complex in senescing chloroplasts, and which causes LHCII complex instability. Transcript and protein profiling revealed a significant upregulation of OsSGR in RACK1B-UX plants compared to that in RACK1B-OX rice plants during salt treatment. The results imply that senescence-associated transcription factors (TFs) are altered following altered OsRACK1B expression, indicating a transcriptional reprogramming by OsRACK1B and a novel regulatory mechanism involving the OsRACK1B-OsSGR-TFs complex. Our findings suggest that the ectopic expression of OsRACK1B negatively regulates chlorophyll degradation, leads to a steady level of LHC-II isoform Lhcb1, an essential prerequisite for the state transition of photosynthesis for adaptation, and delays salinity-induced senescence. Taken together, these results provide important insights into the molecular mechanisms of salinity-induced senescence, which can be useful in circumventing the effect of salt on photosynthesis and in reducing the yield penalty of important cereal crops, such as rice, in global climate change conditions.
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Affiliation(s)
| | - Hemayet Ullah
- Department of Biology, Howard University, Washington, DC 20059, USA
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8
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Jiang H, Liu X, Xiao P, Wang Y, Xie Q, Wu X, Ding H. Functional insights of plant bcl-2-associated ahanogene (BAG) proteins: Multi-taskers in diverse cellular signal transduction pathways. FRONTIERS IN PLANT SCIENCE 2023; 14:1136873. [PMID: 37056491 PMCID: PMC10086319 DOI: 10.3389/fpls.2023.1136873] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 03/06/2023] [Indexed: 06/19/2023]
Abstract
Bcl-2-associated athanogene (BAG) gene family is a highly conserved molecular chaperone cofactor in evolution from yeast to humans and plants playing important roles in a variety of signal pathways. Plant BAG proteins have special structures, especially those containing CaM-binding IQ motifs which are unique to plants. While early studies focused more on the structure and physiological function of plant BAGs, recent studies have revealed many novel functional mechanisms involved in multiple cellular processes. How to achieve signal specificity has become an interesting topic of plant BAG research. In this review, we have provided a historic view of plant BAG research and summarized recent advances in the establishment of BAG as essential components in normal plant growth, environmental stress response, and plant immunity. Based on the relationship between BAG proteins and their newly interacting proteins, this review highlights the functional mechanisms of various cellular signals mediated by plant BAGs. Future work needs to focus on the post-translational modification of BAG proteins, and on understanding how specificity is achieved among BAG signaling pathways.
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Affiliation(s)
- Hailong Jiang
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, China
| | - Xiaoya Liu
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, China
| | - Peixiang Xiao
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, China
| | - Yan Wang
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, China
| | - Qihui Xie
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, China
| | - Xiaoxia Wu
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou, China
| | - Haidong Ding
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou, China
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9
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Kim TH, Kim SM. Identification of Candidate Genes for Salt Tolerance at the Seedling Stage Using Integrated Genome-Wide Association Study and Transcriptome Analysis in Rice. PLANTS (BASEL, SWITZERLAND) 2023; 12:1401. [PMID: 36987089 PMCID: PMC10056360 DOI: 10.3390/plants12061401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 03/19/2023] [Accepted: 03/20/2023] [Indexed: 06/19/2023]
Abstract
Salt stress is a major constraint in rice production worldwide. Salt stress is estimated to cause annual losses of 30-50% in rice production. Discovering and deploying salt-resistance genes are the most effective ways to control salt stress. We performed a genome-wide association study (GWAS) to detect QTLs related to salt tolerance at the seedling stage using the japonica-multiparent advanced generation intercross (MAGIC) population. Four QTLs (qDTS1-1, qDTS1-2, qDTS2, and qDTS9) associated with salt tolerance were identified on chromosomes 1, 2, and 9. Among these QTLs, a novel QTL, qDTS1-2, was located between flanking SNPs (1354576 and id1028360) on chromosome 1, with the largest -log10(P) value of 5.81 and a total phenotypic variance of 15.2%. RNA-seq analysis revealed that among the seven differentially expressed genes (DEGs) commonly identified in both P6 and JM298 showing salt tolerance, two upregulated genes, Os01g0963600 (ASR transcription factor) and Os01g0975300 (OsMYB48), related to salt and drought tolerance, were also involved in the target region of qDTS1-2. The results of this study can provide insights into further understanding of salt tolerance mechanisms and developing DNA markers for marker-assisted selection (MAS) breeding to improve the salt tolerance of cultivars in rice breeding programs.
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Affiliation(s)
- Tae-Heon Kim
- Institute of Agricultural Science and Technology, Kyungpook National University, Daegu 41566, Republic of Korea;
- Department of Ecological & Environmental System, Kyungpook National University, Sangju 37224, Republic of Korea
| | - Suk-Man Kim
- Department of Ecological & Environmental System, Kyungpook National University, Sangju 37224, Republic of Korea
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Byregowda R, Prasad SR, Oelmüller R, Nataraja KN, Prasanna Kumar MK. Is Endophytic Colonization of Host Plants a Method of Alleviating Drought Stress? Conceptualizing the Hidden World of Endophytes. Int J Mol Sci 2022; 23:ijms23169194. [PMID: 36012460 PMCID: PMC9408852 DOI: 10.3390/ijms23169194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/12/2022] [Accepted: 08/13/2022] [Indexed: 11/16/2022] Open
Abstract
In the wake of changing climatic conditions, plants are frequently exposed to a wide range of biotic and abiotic stresses at various stages of their development, all of which negatively affect their growth, development, and productivity. Drought is one of the most devastating abiotic stresses for most cultivated crops, particularly in arid and semiarid environments. Conventional breeding and biotechnological approaches are used to generate drought-tolerant crop plants. However, these techniques are costly and time-consuming. Plant-colonizing microbes, notably, endophytic fungi, have received increasing attention in recent years since they can boost plant growth and yield and can strengthen plant responses to abiotic stress. In this review, we describe these microorganisms and their relationship with host plants, summarize the current knowledge on how they “reprogram” the plants to promote their growth, productivity, and drought tolerance, and explain why they are promising agents in modern agriculture.
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Affiliation(s)
- Roopashree Byregowda
- Department of Seed Science and Technology, University of Agricultural Sciences, Bangalore 560065, India
- Department of Plant Physiology, Matthias Schleiden Institute of Genetics, Bioinformatics and Molecular Botany, Friedrich-Schiller-University, 07743 Jena, Germany
| | | | - Ralf Oelmüller
- Department of Plant Physiology, Matthias Schleiden Institute of Genetics, Bioinformatics and Molecular Botany, Friedrich-Schiller-University, 07743 Jena, Germany
- Correspondence:
| | - Karaba N. Nataraja
- Department of Crop Physiology, University of Agricultural Sciences, Bangalore 560065, India
| | - M. K. Prasanna Kumar
- Department of Plant Pathology, University of Agricultural Sciences, Bangalore 560065, India
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11
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BAG9 Confers Thermotolerance by Regulating Cellular Redox Homeostasis and the Stability of Heat Shock Proteins in Solanum lycopersicum. Antioxidants (Basel) 2022; 11:antiox11081467. [PMID: 36009189 PMCID: PMC9404849 DOI: 10.3390/antiox11081467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 07/20/2022] [Accepted: 07/25/2022] [Indexed: 02/04/2023] Open
Abstract
The Bcl-2-associated athanogene (BAG) family, a group of co-chaperones that share conservative domains in flora and fauna, is involved in plant growth, development, and stress tolerance. However, the function of tomato BAG genes on thermotolerance remains largely unknown. Herein, we found that the expression of BAG9 was induced during heat stress in tomato plants. Knockout of the BAG9 gene by CRISPR/Cas9 reduced, while its overexpression increased thermotolerance in tomato plants as reflected by the phenotype, photosynthesis rate, and membrane peroxidation. Heat-induced reactive oxygen species and oxidative/oxidized proteins were further increased in bag9 mutants and were normalized in BAG9 overexpressing plants. Furthermore, the activities of antioxidant enzymes, ascorbic acid (AsA)/dehydroascorbic acid (DHA), and reduced glutathione (GSH)/oxidized glutathione (GSSG) were reduced in bag9 mutants and were increased in BAG9 overexpressing plants under heat stress. Additionally, BAG9 interacted with Hsp20 proteins in vitro and in vivo. Accumulation of Hsp proteins induced by heat showed a reduction in bag9 mutants; meanwhile, it was increased in BAG9 overexpressing plants. Thus, BAG9 played a crucial role in response to heat stress by regulating cellular redox homeostasis and the stability of heat shock proteins.
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12
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Genome-Wide Identification of the Bcl-2 Associated Athanogene (BAG) Gene Family in Solanum lycopersicum and the Functional Role of SlBAG9 in Response to Osmotic Stress. Antioxidants (Basel) 2022; 11:antiox11030598. [PMID: 35326248 PMCID: PMC8945447 DOI: 10.3390/antiox11030598] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/16/2022] [Accepted: 03/17/2022] [Indexed: 02/01/2023] Open
Abstract
The Bcl-2-associated athanogene (BAG) proteins are a family of multi-functional group of co-chaperones regulators, modulating diverse processes from plant growth and development to stress response. Here, 10 members of SlBAG gene family were identified based on the available tomato (Solanum lycopersicum) genomic information and named as SlBAG1-10 according to their chromosomal location. All SlBAG proteins harbor a characteristic BAG domain, categorized into two groups, and SlBAG4, SlBAG7, and SlBAG9 of group I contain a plant-specific isoleucine glutamine (IQ) calmodulin-binding motif located in the N terminus. The quantitative real-time PCR expression analysis revealed that these SlBAG genes had organ-specific expression patterns and most SlBAG genes were differentially expressed in multiple abiotic stresses including drought, salt, high temperature, cold, and cadmium stress as well as abscisic acid and H2O2. In addition, heterologous overexpression of SlBAG9 increased the sensitivity of Arabidopsis to drought, salt, and ABA during seed germination and seedling growth. The decreased tolerance may be due to the downregulation of stress-related genes expression and severe oxidative stress. The expression levels of some stress and ABA-related genes, such as ABI3, RD29A, DREB2A, and P5CS1, were significantly inhibited by SlBAG9 overexpression under osmotic stress. Meanwhile, the overexpression of SlBAG9 inhibited the expression of FSD1 and CAT1 under stress conditions and the decreased levels of superoxide dismutase and catalase enzyme activities were detected accompanying the trends in the expression of both genes, which resulted in H2O2 accumulation and lipid peroxidation. Taken together, these findings lay a foundation for the future study of the biological function of SlBAG genes in tomato.
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13
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Jan S, Singh B, Bhardwaj R, Kapoor D, Kour J, Singh R, Alam P, Noureldeen A, Darwish H. Application of melatonin and PGPR alleviates thiamethoxam induced toxicity by regulating the TCA cycle in Brassica juncea L. Saudi J Biol Sci 2022; 29:1348-1354. [PMID: 35280551 PMCID: PMC8913416 DOI: 10.1016/j.sjbs.2022.01.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 01/14/2022] [Accepted: 01/16/2022] [Indexed: 12/03/2022] Open
Abstract
Thiamethoxam, a broad spectrum, neonicotinoid insecticide, is used on various crops including Brassica juncea L. to protect from intruding insects such as leaf-hoppers, aphids, thrips and white-flies. Exposure to thiamethoxam causes acute malady such as tumour development, cell apoptosis, liver damage and neurotoxicity. Melatonin is entailed in umpteen developmental processes of plants, including stress responses. The pleiotropic effects of melatonin in modulating plant growth validate it’s imperative contribution as multi-regulatory substance. Exiguous information is known about the role of Pseudomonas putida in improving plant growth under thiamethoxam stress. Taking these aspects into consideration the contemporary study investigates the role of melatonin and Pseudomonas putida strain MTCC 3315 in alleviating the thiamethoxam induced toxicity in B. juncea plant. Fourier Transform Infrared Spectroscopy (FTIR) analysis uncloaked that thiamethoxam induced stress primarily affects the protein content of plant as compared to lipids, carbohydrates and cell wall components. Organic acid profiling of the treated samples carried-out by High-Performance Liquid Chromatography (HPLC), reported an upregulation in the level of organic acids, malic acid (110%), citric acid (170%), succinic acid (81%), fumaric acid (40%) and ascorbic acid (55%) in thiamethoxam treated plants compared to the investigational untreated plants. The melatonin treated seedlings grown under thiamethoxam stress, exhibit increased level of malic acid, citric acid, succinic acid, fumaric acid and ascorbic acid by 81%, 0.94%, 11%, 21% and 6% respectively. Further, thiamethoxam stressed plants inoculated with Pseudomonas putida showed stupendous up-regulation by 161% (malic acid), by 14% (citric acid), by 33% (succinic acid), by 30% (fumaric acid), by 100% (oxalic acid) respectively. Lastly, the combinatorial application of melatonin and Pseudomonas putida resulted in prodigious upsurge of malic acid by 165%, succinic acid by 69%, fumaric acid by 42% respectively in contrast to distinct melatonin and Pseudomonas putida treatments. The accumulation of organic acids ascertains the defence against thiamethoxam stress and corresponds to meet the energy generation requirement to skirmish thiamethoxam mediated abiotic stress in Brassica juncea plant.
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Affiliation(s)
- Sadaf Jan
- School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, Punjab 144411, India
| | - Bhupender Singh
- School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, Punjab 144411, India
| | - Renu Bhardwaj
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab 143005, India
| | - Dhriti Kapoor
- School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, Punjab 144411, India
| | - Jaspreet Kour
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab 143005, India
| | - Rattandeep Singh
- School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, Punjab 144411, India
- Corresponding author.
| | - Pravej Alam
- Biology Department, College of Science and Humanities, Prince Sattam bin Abdulaziz University (PSAU), Alkharj, Kingdom of Saudi Arabia
| | - Ahmed Noureldeen
- Department of Biology, College of Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Hadeer Darwish
- Department of Biotechnology, College of Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
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14
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Irfan M, Kumar P, Ahmad I, Datta A. Unraveling the role of tomato Bcl-2-associated athanogene (BAG) proteins during abiotic stress response and fruit ripening. Sci Rep 2021; 11:21734. [PMID: 34741097 PMCID: PMC8571320 DOI: 10.1038/s41598-021-01185-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 10/20/2021] [Indexed: 11/22/2022] Open
Abstract
B-cell lymphoma2 (Bcl-2)-associated athanogene (BAG) family proteins are evolutionary conserved across all eukaryotes. These proteins interact with HSP70/HSC70 and function as co-chaperones during stress response and developmental pathways. Compared to the animal counterpart, the BAG proteins in plants are much less studied and primarily Arabidopsis BAG proteins have been identified and characterized for their role in programmed cell death, homeostasis, growth and development, abiotic and biotic stress response. Here, we have identified BAG protein family (SlBAGs) in tomato, an economically important and a model fruit crop using genome-wide scanning. We have performed phylogenetic analysis, genes architecture assessment, chromosomal location and in silico promoter analysis. Our data suggest that SlBAGs show differential tissue specific expression pattern during plant development particularly fruit development and ripening. Furthermore, we reported that expression of SlBAGs is modulated during abiotic stresses and is regulated by stress hormones ABA and ethylene. In planta subcellular localization reveals their diverse subcellular localization, and many members are localized in nucleus and cytoplasm. Like previous reports, our protein-protein interaction network and yeast two-hybrid analysis uncover that SlBAGs interact with HSP70. The current study provides insights into role of SlBAGs in plant development particualry fruit ripening and abiotic stress response.
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Affiliation(s)
- Mohammad Irfan
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, 110067, India. .,Plant Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY, USA.
| | - Pankaj Kumar
- grid.419632.b0000 0001 2217 5846National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, 110067 India ,grid.444600.20000 0004 0500 5898Department of Biotechnology, Dr. Y.S. Parmar University of Horticulture and Forestry, Solan, Himachal Pradesh India
| | - Irshad Ahmad
- grid.419632.b0000 0001 2217 5846National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, 110067 India
| | - Asis Datta
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, 110067, India.
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15
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The Divergent Roles of the Rice bcl-2 Associated Athanogene (BAG) Genes in Plant Development and Environmental Responses. PLANTS 2021; 10:plants10102169. [PMID: 34685978 PMCID: PMC8538510 DOI: 10.3390/plants10102169] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 09/22/2021] [Accepted: 09/24/2021] [Indexed: 01/01/2023]
Abstract
Bcl-2-associated athanogene (BAG), a group of proteins evolutionarily conserved and functioned as co-chaperones in plants and animals, is involved in various cell activities and diverse physiological processes. However, the biological functions of this gene family in rice are largely unknown. In this study, we identified a total of six BAG members in rice. These genes were classified into two groups, OsBAG1, -2, -3, and -4 are in group I with a conserved ubiquitin-like structure and OsBAG5 and -6 are in group Ⅱ with a calmodulin-binding domain, in addition to a common BAG domain. The BAG genes exhibited diverse expression patterns, with OsBAG4 showing the highest expression level, followed by OsBAG1 and OsBAG3, and OsBAG6 preferentially expressed in the panicle, endosperm, and calli. The co-expression analysis and the hierarchical cluster analysis indicated that the OsBAG1 and OsBAG3 were co-expressed with primary cell wall-biosynthesizing genes, OsBAG4 was co-expressed with phytohormone and transcriptional factors, and OsBAG6 was co-expressed with disease and shock-associated genes. β-glucuronidase (GUS) staining further indicated that OsBAG3 is mainly involved in primary young tissues under both primary and secondary growth. In addition, the expression of the BAG genes under brown planthopper (BPH) feeding, N, P, and K deficiency, heat, drought and plant hormones treatments was investigated. Our results clearly showed that OsBAGs are multifunctional molecules as inferred by their protein structures, subcellular localizations, and expression profiles. BAGs in group I are mainly involved in plant development, whereas BAGs in group II are reactive in gene regulations and stress responses. Our results provide a solid basis for the further elucidation of the biological functions of plant BAG genes.
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16
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Kumar N, Chhokar RS, Meena RP, Kharub AS, Gill SC, Tripathi SC, Gupta OP, Mangrauthia SK, Sundaram RM, Sawant CP, Gupta A, Naorem A, Kumar M, Singh GP. Challenges and opportunities in productivity and sustainability of rice cultivation system: a critical review in Indian perspective. CEREAL RESEARCH COMMUNICATIONS 2021; 50:573-601. [PMID: 34642509 PMCID: PMC8498983 DOI: 10.1007/s42976-021-00214-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 09/22/2021] [Indexed: 06/12/2023]
Abstract
ABSTRACT Rice-wheat cropping system, intensively followed in Indo-Gangetic plains (IGP), played a prominent role in fulfilling the food grains demand of the increasing population of South Asia. In northern Indian plains, some practices such as intensive rice cultivation with traditional method for long-term have been associated with severe deterioration of natural resources, declining factor productivity, multiple nutrients deficiencies, depleting groundwater, labour scarcity and higher cost of cultivation, putting the agricultural sustainability in question. Varietal development, soil and water management, and adoption of resource conservation technologies in rice cultivation are the key interventions areas to address these challenges. The cultivation of lesser water requiring crops, replacing rice in light-textured soil and rainfed condition, should be encouraged through policy interventions. Direct seeding of short duration, high-yielding and stress tolerant rice varieties with water conservation technologies can be a successful approach to improve the input use efficiency in rice cultivation under medium-heavy-textured soils. Moreover, integrated approach of suitable cultivars for conservation agriculture, mechanized transplanting on zero-tilled/unpuddled field and need-based application of water, fertilizer and chemicals might be a successful approach for sustainable rice production system in the current scenario. In this review study, various challenges in productivity and sustainability of rice cultivation system and possible alternatives and solutions to overcome such challenges are discussed in details.
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Affiliation(s)
- Neeraj Kumar
- ICAR- Indian Institute of Wheat and Barley Research, Karnal, Haryana 132001 India
| | - R. S. Chhokar
- ICAR- Indian Institute of Wheat and Barley Research, Karnal, Haryana 132001 India
| | - R. P. Meena
- ICAR- Indian Institute of Wheat and Barley Research, Karnal, Haryana 132001 India
| | - A. S. Kharub
- ICAR- Indian Institute of Wheat and Barley Research, Karnal, Haryana 132001 India
| | - S. C. Gill
- ICAR- Indian Institute of Wheat and Barley Research, Karnal, Haryana 132001 India
| | - S. C. Tripathi
- ICAR- Indian Institute of Wheat and Barley Research, Karnal, Haryana 132001 India
| | - O. P. Gupta
- ICAR- Indian Institute of Wheat and Barley Research, Karnal, Haryana 132001 India
| | - S. K. Mangrauthia
- ICAR-Indian Institute of Rice Research, Hyderabad, Telangana 500030 India
| | - R. M. Sundaram
- ICAR-Indian Institute of Rice Research, Hyderabad, Telangana 500030 India
| | - C. P. Sawant
- ICAR- Central Institute of Agricultural Engineering, Bhopal, Madhya Pradesh 462038 India
| | - Ajita Gupta
- ICAR- Central Institute of Agricultural Engineering, Bhopal, Madhya Pradesh 462038 India
| | - Anandkumar Naorem
- ICAR- Central Arid Zone Research Institute, Regional Research Station-Kukma, Bhuj, Gujarat 370105 India
| | - Manoj Kumar
-
Indian Institute of Soil and Water Conservation, Regional Centre, Chandigarh, 160019 India
| | - G. P. Singh
- ICAR- Indian Institute of Wheat and Barley Research, Karnal, Haryana 132001 India
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17
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He M, Wang Y, Jahan MS, Liu W, Raziq A, Sun J, Shu S, Guo S. Characterization of SlBAG Genes from Solanum lycopersicum and Its Function in Response to Dark-Induced Leaf Senescence. PLANTS 2021; 10:plants10050947. [PMID: 34068645 PMCID: PMC8151600 DOI: 10.3390/plants10050947] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 04/29/2021] [Accepted: 05/06/2021] [Indexed: 12/03/2022]
Abstract
The Bcl-2-associated athanogene (BAG) family is a group of evolutionarily conserved cochaperones involved in diverse cellular functions. Here, ten putative SlBAG genes were identified in tomato. SlBAG2 and SlBAG5b have the same gene structure and conserved domains, along with highly similar identity to their homologs in Arabidopsis thaliana, Oryza sativa, and Triticum aestivum. The qPCR data showed that BAG2 and BAG5b were highly expressed in stems and flowers. Moreover, both genes were differentially expressed under diverse abiotic stimuli, including cold stress, heat stress, salt treatment, and UV irradiation, and treatments with phytohormones, namely, ABA, SA, MeJA, and ETH. Subcellular localization showed that SlBAG2 and SlBAG5b were located in the cell membrane and nucleus. To elucidate the functions in leaf senescence of BAG2 and BAG5b, the full-length CDSs of BAG2 and BAG5b were cloned, and transgenic tomatoes were developed. Compared with WT plants, those overexpressing BAG2 and BAG5b had significantly increased chlorophyll contents, chlorophyll fluorescence parameters and photosynthetic rates but obviously decreased ROS levels, chlorophyll degradation and leaf senescence related gene expression under dark stress. Conclusively, overexpression SlBAG2 and SlBAG5b could improve the tolerance of tomato leaves to dark stress and delay leaf senescence.
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Affiliation(s)
- Mingming He
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China; (M.H.); (Y.W.); (M.S.J.); (W.L.); (A.R.); (J.S.); (S.S.)
| | - Yu Wang
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China; (M.H.); (Y.W.); (M.S.J.); (W.L.); (A.R.); (J.S.); (S.S.)
- Suqian Academy of Protected Horticulture, Nanjing Agricultural University, Suqian 223800, China
| | - Mohammad Shah Jahan
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China; (M.H.); (Y.W.); (M.S.J.); (W.L.); (A.R.); (J.S.); (S.S.)
- Department of Horticulture, Sher-e-Bangla Agricultural University, Dhaka 1207, Bangladesh
| | - Weikang Liu
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China; (M.H.); (Y.W.); (M.S.J.); (W.L.); (A.R.); (J.S.); (S.S.)
| | - Abdul Raziq
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China; (M.H.); (Y.W.); (M.S.J.); (W.L.); (A.R.); (J.S.); (S.S.)
| | - Jin Sun
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China; (M.H.); (Y.W.); (M.S.J.); (W.L.); (A.R.); (J.S.); (S.S.)
- Suqian Academy of Protected Horticulture, Nanjing Agricultural University, Suqian 223800, China
| | - Sheng Shu
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China; (M.H.); (Y.W.); (M.S.J.); (W.L.); (A.R.); (J.S.); (S.S.)
- Suqian Academy of Protected Horticulture, Nanjing Agricultural University, Suqian 223800, China
| | - Shirong Guo
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China; (M.H.); (Y.W.); (M.S.J.); (W.L.); (A.R.); (J.S.); (S.S.)
- Suqian Academy of Protected Horticulture, Nanjing Agricultural University, Suqian 223800, China
- Correspondence:
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18
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Ganie SA, Wani SH, Henry R, Hensel G. Improving rice salt tolerance by precision breeding in a new era. CURRENT OPINION IN PLANT BIOLOGY 2021; 60:101996. [PMID: 33444976 DOI: 10.1016/j.pbi.2020.101996] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 12/16/2020] [Accepted: 12/19/2020] [Indexed: 05/03/2023]
Abstract
Rice is a premier staple food that constitutes the bulk of the daily diet of the majority of people in Asia. Agricultural productivity must be boosted to support this huge demand for rice. However, production is jeopardized by soil salinity. Advances in whole-genome sequencing, marker-assisted breeding strategies, and targeted mutagenesis have substantially improved the toolbox of today's breeders. Given that salinity has a major influence on rice at both the seedling and reproductive stages, understanding and manipulating this trait will have an enormous impact on sustainable production. This article summarizes recent developments in the understanding of the mechanisms of salt tolerance and how state-of-the-art tools such as RNA guided CRISPR endonuclease technology including targeted mutagenesis or base and prime editing can help in gene discovery and functional analysis as well as in transferring favorable alleles into elite breeding material to speed the breeding of salt-tolerant rice cultivars.
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Affiliation(s)
- Showkat Ahmad Ganie
- Department of Biotechnology, Visva-Bharati, Santiniketan 731235, West Bengal, India.
| | - Shabir Hussain Wani
- Mountain Research Centre for Field Crops, Khudwani - 192101, Sher-e-Kashmir University of Agricultural Sciences and Technology, Kashmir, J&K, India
| | - Robert Henry
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Goetz Hensel
- Centre for Plant Genome Engineering, Institute of Plant Biochemistry, Heinrich-Heine-University, Universitätsstraße 1, 40225 Düsseldorf, Germany; Department of Physiology and Cell Biology, Leibniz Institute of Plant Genetics and Crop Plant Research, Corrensstraße 3, OT Gatersleben, 06466 Seeland, Germany; Division of Molecular Biology, Centre of Region Haná for Biotechnological and Agriculture Research, Czech Advanced Technology and Research Institute, Palacký University, Olomouc, Czech Republic.
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19
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Sallam N, Moussa M. DNA methylation changes stimulated by drought stress in ABA-deficient maize mutant vp10. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 160:218-224. [PMID: 33515971 DOI: 10.1016/j.plaphy.2021.01.024] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 01/16/2021] [Indexed: 06/12/2023]
Abstract
Plants are constantly challenged with several biotic and abiotic stresses, and the adaptation to these stresses requires molecular and morphological changes. Epigenetic regulation provides effective control that enables plants to tolerate stress, which results in improved survivability. The distinct role of abscisic acid (ABA) in controlling numerous stress-responsive genes and enhancing respiration metabolism is well known; however, whether DNA methylation is associated with the regulation of ABA-dependent gene expression remains unclear. This study was conducted to identify the changes in DNA methylation induced by drought stress in ABA-deficient maize mutant vp10 using the amplified methylation polymorphism-polymerase chain reaction (AMP-PCR) technique. Differentially methylated DNA fragments were mapped to intragenic regions of zinc finger, amino acid catabolic enzymes, and other genes implicated in DNA repair and plant survival, in addition to several demethylated transposable elements.
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Affiliation(s)
- Nehal Sallam
- Department of Genetics, Faculty of Agriculture, Alexandria University, Alexandria, 21545, Egypt.
| | - Mounir Moussa
- Department of Genetics, Faculty of Agriculture, Alexandria University, Alexandria, 21545, Egypt
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20
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Thanthrige N, Jain S, Bhowmik SD, Ferguson BJ, Kabbage M, Mundree S, Williams B. Centrality of BAGs in Plant PCD, Stress Responses, and Host Defense. TRENDS IN PLANT SCIENCE 2020; 25:1131-1140. [PMID: 32467063 DOI: 10.1016/j.tplants.2020.04.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Revised: 04/08/2020] [Accepted: 04/21/2020] [Indexed: 05/02/2023]
Abstract
Programmed cell death (PCD) is a genetically regulated process for the selective demise of unwanted and damaged cells. Although our understanding of plant PCD pathways has advanced significantly, doubts remain on the extent of conservation of animal apoptosis in plants. At least at the primary sequence level, plants do not encode the regulators of animal apoptosis. Structural analyses have enabled the identification of the B cell lymphoma 2 (Bcl-2)-associated athanogene (BAG) family of co-chaperones in plants. This discovery suggests that some aspects of animal PCD are conserved in plants, while the varied subcellular localization of plant BAGs indicates that they may have evolved distinct functions. Here we review plant BAG proteins, with an emphasis on their roles in the regulation of plant PCD.
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Affiliation(s)
- Nipuni Thanthrige
- Centre for Tropical Crops and Biocommodities, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Sachin Jain
- Department of Plant Pathology, University of Wisconsin-, Madison, WI 53706, USA
| | - Sudipta Das Bhowmik
- Centre for Tropical Crops and Biocommodities, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Brett J Ferguson
- School of Agriculture and Food Sciences, University of Queensland, Brisbane, QLD 4072, Australia
| | - Mehdi Kabbage
- Department of Plant Pathology, University of Wisconsin-, Madison, WI 53706, USA
| | - Sagadevan Mundree
- Centre for Tropical Crops and Biocommodities, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Brett Williams
- Centre for Tropical Crops and Biocommodities, Queensland University of Technology, Brisbane, QLD 4000, Australia.
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21
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Liu X, Qin D, Piersanti A, Zhang Q, Miceli C, Wang P. Genome-wide association study identifies candidate genes related to oleic acid content in soybean seeds. BMC PLANT BIOLOGY 2020; 20:399. [PMID: 32859172 PMCID: PMC7456086 DOI: 10.1186/s12870-020-02607-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Accepted: 08/16/2020] [Indexed: 05/29/2023]
Abstract
BACKGROUND Soybean oil is a complex mixture of five fatty acids (palmitic, stearic, oleic, linoleic, and linolenic). Soybean oil with a high oleic acid content is desirable because this monounsaturated fatty acid improves the oxidative stability of the oil. To investigate the genetic architecture of oleic acid in soybean seeds, 260 soybean germplasms from Northeast China were collected as natural populations. A genome-wide association study (GWAS) was conducted on a panel of 260 germplasm resources. RESULTS Phenotypic identification results showed that the oleic acid content varied from 8.2 to 35.0%. A total of 2,311,337 single-nucleotide polymorphism (SNP) markers were obtained. GWAS analysis showed that there were many genes related to oleic acid content with a contribution rate of 7%. The candidate genes Glyma.11G229600.1 on chromosome 11 and Glyma.04G102900.1 on chromosome 4 were detected in a 2-year-long GWAS. The candidate gene Glyma.11G229600.1 showed a positive correlation with the oleic acid content, and the correlation coefficient was 0.980, while Glyma.04G102900.1 showed a negative correlation, with a coefficient of - 0.964. CONCLUSIONS Glyma.04G102900.1 on chromosome 4 and Glyma.11G229600.1 on chromosome 11 were detected in both analyses (2018 and 2019). Glyma.04G102900.1 and Glyma.11G229600.1 are new key candidate genes related to oleic acid in soybean seeds. These results will be useful for high-oleic soybean breeding.
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Affiliation(s)
- Xiaoyi Liu
- Research Center of Integrative Medicine, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, Guangdong, PR China
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, MC, Italy
- Biotechnology Center of Jilin Agricultural University, Jilin Agricultural University, Changchun, 130118, PR China
| | - Di Qin
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, MC, Italy.
- Biotechnology Center of Jilin Agricultural University, Jilin Agricultural University, Changchun, 130118, PR China.
| | - Angela Piersanti
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, MC, Italy
| | - Qi Zhang
- Biotechnology Center of Jilin Agricultural University, Jilin Agricultural University, Changchun, 130118, PR China
| | - Cristina Miceli
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, MC, Italy.
| | - Piwu Wang
- Biotechnology Center of Jilin Agricultural University, Jilin Agricultural University, Changchun, 130118, PR China.
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22
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Laterals take it better - Emerging and young lateral roots survive lethal salinity longer than the primary root in Arabidopsis. Sci Rep 2020; 10:3291. [PMID: 32094490 PMCID: PMC7040039 DOI: 10.1038/s41598-020-60163-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 02/06/2020] [Indexed: 11/16/2022] Open
Abstract
Plant responses to salinity have been extensively studied over the last decades. Despite the vast accumulated knowledge, the ways Arabidopsis lateral roots (LR) cope with lethal salinity has not been fully resolved. Here we compared the primary root (PR) and the LR responses during events leading to lethal salinity (NaCl 200 mM) in Arabidopsis. We found that the PR and young LR responded differently to lethal salinity: While the PR died, emerging and young LR’s remained strikingly viable. Moreover, “age acquired salt tolerance” (AAST) was observed in the PR. During the 2 days after germination (DAG) the PR was highly sensitive, but at 8 DAG there was a significant increase in the PR cell survival. Nevertheless, the young LR exhibited an opposite pattern and completely lost its salinity tolerance, as it elongated beyond 400 µm. Examination of several cell death signatures investigated in the young LR showed no signs of an active programmed cell death (PCD) during lethal salinity. However, Autophagic PCD (A-PCD) but not apoptosis-like PCD (AL-PCD) was found to be activated in the PR during the high salinity conditions. We further found that salinity induced NADPH oxidase activated ROS, which were more highly distributed in the young LR compared to the PR, is required for the improved viability of the LR during lethal salinity conditions. Our data demonstrated a position-dependent resistance of Arabidopsis young LR to high salinity. This response can lead to identification of novel salt stress coping mechanisms needed by agriculture during the soil salinization challenge.
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Jaiswal S, Gautam RK, Singh RK, Krishnamurthy SL, Ali S, Sakthivel K, Iquebal MA, Rai A, Kumar D. Harmonizing technological advances in phenomics and genomics for enhanced salt tolerance in rice from a practical perspective. RICE (NEW YORK, N.Y.) 2019; 12:89. [PMID: 31802312 PMCID: PMC6892996 DOI: 10.1186/s12284-019-0347-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 11/06/2019] [Indexed: 05/12/2023]
Abstract
Half of the global human population is dependent on rice as a staple food crop and more than 25% increase in rice productivity is required to feed the global population by 2030. With increase in irrigation, global warming and rising sea level, rising salinity has become one of the major challenges to enhance the rice productivity. Since the loss on this account is to the tune of US$12 billion per annum, it necessitates the global attention. In the era of technological advancement, substantial progress has been made on phenomics and genomics data generation but reaping benefit of this in rice salinity variety development in terms of cost, time and precision requires their harmonization. There is hardly any comprehensive holistic review for such combined approach. Present review describes classical salinity phenotyping approaches having morphological, physiological and biochemical components. It also gives a detailed account of invasive and non-invasive approaches of phenomic data generation and utilization. Classical work of rice salinity QLTs mapping in the form of chromosomal atlas has been updated. This review describes how QTLs can be further dissected into QTN by GWAS and transcriptomic approaches. Opportunities and progress made by transgenic, genome editing, metagenomics approaches in combating rice salinity problems are discussed. Major aim of this review is to provide a comprehensive over-view of hitherto progress made in rice salinity tolerance research which is required to understand bridging of phenotype based breeding with molecular breeding. This review is expected to assist rice breeders in their endeavours by fetching greater harmonization of technological advances in phenomics and genomics for better pragmatic approach having practical perspective.
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Affiliation(s)
- Sarika Jaiswal
- Centre for Agricultural Bioinformatics, ICAR-Indian Agricultural Statistical Research Institute, PUSA, New Delhi, 110012, India
| | - R K Gautam
- Division of Field Crop Improvement & Protection, ICAR-Central Island Agricultural Research Institute, Port Blair, Andaman and Nicobar Islands, 744105, India.
| | - R K Singh
- Division of Plant Breeding Genetics and Biotechnology, International Rice Research Institute, DAPO Box 7777, Los Banos, Metro Manila, Philippines
| | - S L Krishnamurthy
- Division of Crop Improvement, ICAR-Central Soil Salinity Research Institute, Karnal, Haryana, 132001, India
| | - S Ali
- Division of Crop Improvement, ICAR-Central Soil Salinity Research Institute, Karnal, Haryana, 132001, India
| | - K Sakthivel
- Division of Field Crop Improvement & Protection, ICAR-Central Island Agricultural Research Institute, Port Blair, Andaman and Nicobar Islands, 744105, India
| | - M A Iquebal
- Centre for Agricultural Bioinformatics, ICAR-Indian Agricultural Statistical Research Institute, PUSA, New Delhi, 110012, India
| | - Anil Rai
- Centre for Agricultural Bioinformatics, ICAR-Indian Agricultural Statistical Research Institute, PUSA, New Delhi, 110012, India
| | - Dinesh Kumar
- Centre for Agricultural Bioinformatics, ICAR-Indian Agricultural Statistical Research Institute, PUSA, New Delhi, 110012, India.
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24
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Locascio A, Marqués MC, García-Martínez G, Corratgé-Faillie C, Andrés-Colás N, Rubio L, Fernández JA, Véry AA, Mulet JM, Yenush L. BCL2-ASSOCIATED ATHANOGENE4 Regulates the KAT1 Potassium Channel and Controls Stomatal Movement. PLANT PHYSIOLOGY 2019; 181:1277-1294. [PMID: 31451552 PMCID: PMC6836829 DOI: 10.1104/pp.19.00224] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 08/05/2019] [Indexed: 05/18/2023]
Abstract
Potassium (K+) is a key monovalent cation necessary for multiple aspects of cell growth and survival. In plants, this cation also plays a key role in the control of stomatal movement. KAT1 and its homolog KAT2 are the main inward rectifying channels present in guard cells, mediating K+ influx into these cells, resulting in stomatal opening. To gain further insight into the regulation of these channels, we performed a split-ubiquitin protein-protein interaction screen searching for KAT1 interactors in Arabidopsis (Arabidopsis thaliana). We characterized one of these candidates, BCL2-ASSOCIATED ATHANOGENE4 (BAG4), in detail using biochemical and genetic approaches to confirm this interaction and its effect on KAT1 activity. We show that BAG4 improves KAT1-mediated K+ transport in two heterologous systems and provide evidence that in plants, BAG4 interacts with KAT1 and favors the arrival of KAT1 at the plasma membrane. Importantly, lines lacking or overexpressing the BAG4 gene show altered KAT1 plasma membrane accumulation and alterations in stomatal movement. Our data allowed us to identify a KAT1 regulator and define a potential target for the plant BAG family. The identification of physiologically relevant regulators of K+ channels will aid in the design of approaches that may impact drought tolerance and pathogen susceptibility.
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Affiliation(s)
- Antonella Locascio
- Instituto de Biología Molecular y Celular de Plantas, Universitat Politécnica de Valencia-Consejo Superior de Investigaciones Científicas, 46022 Valencia, Spain
| | - Maria Carmen Marqués
- Instituto de Biología Molecular y Celular de Plantas, Universitat Politécnica de Valencia-Consejo Superior de Investigaciones Científicas, 46022 Valencia, Spain
| | - Guillermo García-Martínez
- Instituto de Biología Molecular y Celular de Plantas, Universitat Politécnica de Valencia-Consejo Superior de Investigaciones Científicas, 46022 Valencia, Spain
| | - Claire Corratgé-Faillie
- Biochimie et Physiologie Moléculaire des Plantes, Université Montpellier, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique (INRA), SupAgro Montpellier, Campus SupAgro-INRA, 34060 Montpellier Cedex 2, France
| | - Nuria Andrés-Colás
- Instituto de Biología Molecular y Celular de Plantas, Universitat Politécnica de Valencia-Consejo Superior de Investigaciones Científicas, 46022 Valencia, Spain
| | - Lourdes Rubio
- Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos S/N, 29010 Málaga, Spain
| | - José Antonio Fernández
- Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos S/N, 29010 Málaga, Spain
| | - Anne-Aliénor Véry
- Biochimie et Physiologie Moléculaire des Plantes, Université Montpellier, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique (INRA), SupAgro Montpellier, Campus SupAgro-INRA, 34060 Montpellier Cedex 2, France
| | - José Miguel Mulet
- Instituto de Biología Molecular y Celular de Plantas, Universitat Politécnica de Valencia-Consejo Superior de Investigaciones Científicas, 46022 Valencia, Spain
| | - Lynne Yenush
- Instituto de Biología Molecular y Celular de Plantas, Universitat Politécnica de Valencia-Consejo Superior de Investigaciones Científicas, 46022 Valencia, Spain
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25
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Park YC, Lim SD, Moon JC, Jang CS. A rice really interesting new gene H2-type E3 ligase, OsSIRH2-14, enhances salinity tolerance via ubiquitin/26S proteasome-mediated degradation of salt-related proteins. PLANT, CELL & ENVIRONMENT 2019; 42:3061-3076. [PMID: 31325169 DOI: 10.1111/pce.13619] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 07/12/2019] [Indexed: 05/20/2023]
Abstract
Salinity is a deleterious abiotic stress factor that affects growth, productivity, and physiology of crop plants. Strategies for improving salinity tolerance in plants are critical for crop breeding programmes. Here, we characterized the rice (Oryza sativa) really interesting new gene (RING) H2-type E3 ligase, OsSIRH2-14 (previously named OsRFPH2-14), which plays a positive role in salinity tolerance by regulating salt-related proteins including an HKT-type Na+ transporter (OsHKT2;1). OsSIRH2-14 expression was induced in root and shoot tissues treated with NaCl. The OsSIRH2-14-EYFP fusion protein was predominately expressed in the cytoplasm, Golgi, and plasma membrane of rice protoplasts. In vitro pull-down assays and bimolecular fluorescence complementation assays revealed that OsSIRH2-14 interacts with salt-related proteins, including OsHKT2;1. OsSIRH2-14 E3 ligase regulates OsHKT2;1 via the 26S proteasome system under high NaCl concentrations but not under normal conditions. Compared with wild type plants, OsSIRH2-14-overexpressing rice plants showed significantly enhanced salinity tolerance and reduced Na+ accumulation in the aerial shoot and root tissues. These results suggest that the OsSIRH2-14 RING E3 ligase positively regulates the salinity stress response by modulating the stability of salt-related proteins.
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Affiliation(s)
- Yong Chan Park
- Plant Genomics Lab, Department of Applied Plant Sciences, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Sung Don Lim
- Plant Genomics Lab, Department of Applied Plant Sciences, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Jun-Cheol Moon
- Plant Genomics Lab, Department of Applied Plant Sciences, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Cheol Seong Jang
- Plant Genomics Lab, Department of Applied Plant Sciences, Kangwon National University, Chuncheon, 24341, Republic of Korea
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26
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Deb S, Gupta MK, Patel HK, Sonti RV. Xanthomonas oryzae pv. oryzae XopQ protein suppresses rice immune responses through interaction with two 14-3-3 proteins but its phospho-null mutant induces rice immune responses and interacts with another 14-3-3 protein. MOLECULAR PLANT PATHOLOGY 2019; 20:976-989. [PMID: 31094082 PMCID: PMC6856769 DOI: 10.1111/mpp.12807] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Many bacterial phytopathogens employ effectors secreted through the type-III secretion system to suppress plant innate immune responses. The Xanthomonas type-III secreted non-TAL effector protein Xanthomonas outer protein Q (XopQ) exhibits homology to nucleoside hydrolases. Previous work indicated that mutations which affect the biochemical activity of XopQ fail to affect its ability to suppress rice innate immune responses, suggesting that the effector might be acting through some other pathway or mechanism. In this study, we show that XopQ interacts in yeast and in planta with two rice 14-3-3 proteins, Gf14f and Gf14g. A serine to alanine mutation (S65A) of a 14-3-3 interaction motif in XopQ abolishes the ability of XopQ to interact with the two 14-3-3 proteins and to suppress innate immunity. Surprisingly, the S65A mutant gains the ability to interact with a third 14-3-3 protein that is a negative regulator of innate immunity. The XopQS65A mutant is an inducer of rice immune responses and this property is dominant over the wild-type function of XopQ. Taken together, these results suggest that XopQ targets the rice 14-3-3 mediated immune response pathway and that its differential phosphorylation might enable interaction with alternative 14-3-3 proteins.
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Affiliation(s)
- Sohini Deb
- CSIR‐Centre for Cellular and Molecular Biology (CSIR‐CCMB)Hyderabad500007India
| | - Mahesh K. Gupta
- CSIR‐Centre for Cellular and Molecular Biology (CSIR‐CCMB)Hyderabad500007India
- Present address:
Metahelix Life Sciences Ltd.Bangalore560099India
| | - Hitendra K. Patel
- CSIR‐Centre for Cellular and Molecular Biology (CSIR‐CCMB)Hyderabad500007India
| | - Ramesh V. Sonti
- CSIR‐Centre for Cellular and Molecular Biology (CSIR‐CCMB)Hyderabad500007India
- National Institute of Plant Genome ResearchNew Delhi110067India
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27
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Ishikawa T, Shabala S. Control of xylem Na + loading and transport to the shoot in rice and barley as a determinant of differential salinity stress tolerance. PHYSIOLOGIA PLANTARUM 2019; 165:619-631. [PMID: 29761494 DOI: 10.1111/ppl.12758] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Accepted: 05/10/2018] [Indexed: 06/08/2023]
Abstract
Control of xylem Na+ loading has often been named as the essential component of salinity tolerance mechanism. However, it is less clear to what extent the difference in this trait may determine differential salinity tolerance between species. In this study, barley (Hordeum vulgare L. cv. CM72) and rice (Oryza sativa L. cv. Dongjin) plants were grown under two levels of salinity. Na+ and K+ concentrations in the xylem sap, and shoot and root tissues were measured at different time points after stress onset. Salt-exposed rice plants prevented xylem Na+ loading for several days, but failed to control this process in the longer term, ultimately resulting in a massive Na+ shoot loading. Barley plants quickly increased xylem Na+ concentration and its delivery to the shoot (most likely for the purpose of osmotic adjustment) but were able to reduce this process later on, keeping most of accumulated Na+ in the root, thus maintaining non-toxic shoot Na+ level. Rice plants increased shoot K+ concentration, while barley plants maintained higher root K+ concentration. Control of xylem Na+ loading is remarkably different between rice and barley; this difference may differentiate the extent of the salinity tolerance between species. This trait should be investigated in more detail to be used in the breeding programs aimed to improve salinity tolerance in crops.
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Affiliation(s)
- Tetsuya Ishikawa
- Tasmanian Institute for Agriculture, College of Science and Engineering, University of Tasmania, Hobart, Tasmania 7001, Australia
| | - Sergey Shabala
- Tasmanian Institute for Agriculture, College of Science and Engineering, University of Tasmania, Hobart, Tasmania 7001, Australia
- Department of Horticulture, Foshan University, Foshan 528000, China
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28
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Routes to cell death in animal and plant kingdoms: from classic apoptosis to alternative ways to die—a review. RENDICONTI LINCEI-SCIENZE FISICHE E NATURALI 2018. [DOI: 10.1007/s12210-018-0704-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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29
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Byrt CS, Munns R, Burton RA, Gilliham M, Wege S. Root cell wall solutions for crop plants in saline soils. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2018; 269:47-55. [PMID: 29606216 DOI: 10.1016/j.plantsci.2017.12.012] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Revised: 11/28/2017] [Accepted: 12/27/2017] [Indexed: 05/05/2023]
Abstract
The root growth of most crop plants is inhibited by soil salinity. Roots respond by modulating metabolism, gene expression and protein activity, which results in changes in cell wall composition, transport processes, cell size and shape, and root architecture. Here, we focus on the effects of salt stress on cell wall modifying enzymes, cellulose microfibril orientation and non-cellulosic polysaccharide deposition in root elongation zones, as important determinants of inhibition of root elongation, and highlight cell wall changes linked to tolerance to salt stressed and water limited roots. Salt stress induces changes in the wall composition of specific root cell types, including the increased deposition of lignin and suberin in endodermal and exodermal cells. These changes can benefit the plant by preventing water loss and altering ion transport pathways. We suggest that binding of Na+ ions to cell wall components might influence the passage of Na+ and that Na+ can influence the binding of other ions and hinder the function of pectin during cell growth. Naturally occurring differences in cell wall structure may provide new resources for breeding crops that are more salt tolerant.
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Affiliation(s)
- Caitlin S Byrt
- Plant Transport and Signalling Group, Australian Research Council (ARC) Centre of Excellence in Plant Energy Biology, School of Agriculture, Food and Wine, Waite Research Institute, University of Adelaide, Glen Osmond, SA, 5064, Australia. http://twitter.com/BotanicGeek
| | - Rana Munns
- ARC Centre of Excellence in Plant Energy Biology, and School of Agriculture and Environment, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia
| | - Rachel A Burton
- ARC Centre of Excellence in Plant Cell Walls, School of Agriculture, Food and Wine, The University of Adelaide, Glen Osmond, SA, 5064, Australia
| | - Matthew Gilliham
- Plant Transport and Signalling Group, Australian Research Council (ARC) Centre of Excellence in Plant Energy Biology, School of Agriculture, Food and Wine, Waite Research Institute, University of Adelaide, Glen Osmond, SA, 5064, Australia
| | - Stefanie Wege
- Plant Transport and Signalling Group, Australian Research Council (ARC) Centre of Excellence in Plant Energy Biology, School of Agriculture, Food and Wine, Waite Research Institute, University of Adelaide, Glen Osmond, SA, 5064, Australia
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30
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Biswas S, Amin USM, Sarker S, Rahman MS, Amin R, Karim R, Tuteja N, Seraj ZI. Introgression, Generational Expression and Salinity Tolerance Conferred by the Pea DNA Helicase 45 Transgene into Two Commercial Rice Genotypes, BR28 and BR47. Mol Biotechnol 2018; 60:111-123. [PMID: 29282651 DOI: 10.1007/s12033-017-0055-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
DNA helicase (PDH45) from the pea plant (Pisum sativum) is a member of the DEAD box protein family and plays a vital regulatory role in saline stress tolerance in plants. We previously reported that over-expression of PDH45 gene confers both seedling and reproductive stage salinity tolerance to a Bangladeshi rice landrace, Binnatoa (BA). In this study, transgenic BA-containing PDH45 (♂) was crossed with two different farmer-popular BRRI rice varieties (♀), BR28 and BR47, in a contained net house. F1 plants positive for the transgene and having recipient phenotype were advanced from F1 to F5. Expression of the PDH45 gene was detected in all generations. The expression level of PDH45 was 200-fold higher in the donor compared to the two recipient genotypes but without any effect on their salt stress tolerance ability in various assays. Under 120 mM NaCl stress at seedling stage, all rice genotypes showed vigorous growth, higher chlorophyll content, lower electrolyte leakage and lower LDS (Leaf Damage Score) compared to their corresponding wild types. At the reproductive stage under continuous salinity stress at 80 mM NaCl, the cross-bred lines BR28 and BR47 showed significantly better spikelet fertility and yield per plant, which were two- and 2.5-folds, respectively, than their corresponding wild types. The PDH45 transgene was observed to increase the expression of 6 salt stress-related downstream genes at 150 mM NaCl stress to similar differential degrees in the donor and recipient genotypes. However, the expression of OsLEA was significantly higher in transgenic BR28 compared to transgenic BR47, where the latter shows comparatively higher salt tolerance. The study shows stability of transgene expression across generations. It also demonstrates that there may be an effect of background genotype on transgene expression. Moreover, some downstream effects of the transgene may also be genotype-specific.
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Affiliation(s)
- Sudip Biswas
- Plant Biotechnology Laboratory, Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka, Bangladesh
| | - U S Mahzabin Amin
- Molecular Biotechnology Division, National Institution of Biotechnology, Savar, Bangladesh
| | - Sarah Sarker
- Plant Biotechnology Laboratory, Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka, Bangladesh
| | - M Sazzadur Rahman
- Plant Physiology Division, Bangladesh Rice Research Institute, Gazipur, Bangladesh
| | - Ruhul Amin
- Institute of Food Science and Technology, BCSIR, Dhaka, Bangladesh
| | - Rezaul Karim
- Institute of Food Science and Technology, BCSIR, Dhaka, Bangladesh
| | - Narendra Tuteja
- Amity Institute of Microbial Technology, Amity University, Sector 125, Noida, Uttar Pradesh, 201313, India
| | - Zeba I Seraj
- Plant Biotechnology Laboratory, Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka, Bangladesh.
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31
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Formentin E, Sudiro C, Ronci MB, Locato V, Barizza E, Stevanato P, Ijaz B, Zottini M, De Gara L, Lo Schiavo F. H 2O 2 Signature and Innate Antioxidative Profile Make the Difference Between Sensitivity and Tolerance to Salt in Rice Cells. FRONTIERS IN PLANT SCIENCE 2018; 9:1549. [PMID: 30405678 PMCID: PMC6206305 DOI: 10.3389/fpls.2018.01549] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 10/03/2018] [Indexed: 05/07/2023]
Abstract
Salt tolerance is a complex trait that varies between and within species. H2O2 profiles as well as antioxidative systems have been investigated in the cultured cells of rice obtained from Italian rice varieties with different salt tolerance. Salt stress highlighted differences in extracellular and intracellular H2O2 profiles in the two cell cultures. The tolerant variety had innate reactive oxygen species (ROS) scavenging systems that enabled ROS, in particular H2O2, to act as a signal molecule rather than a damaging one. Different intracellular H2O2 profiles were also observed: in tolerant cells, an early and narrow peak was detected at 5 min; while in sensitive cells, a large peak was associated with cell death. Likewise, the transcription factor salt-responsive ethylene responsive factor 1 (TF SERF1), which is known for being regulated by H2O2, showed a different expression profile in the two cell lines. Notably, similar H2O2 profiles and cell fates were also obtained when exogenous H2O2 was produced by glucose/glucose oxidase (GOX) treatment. Under salt stress, the tolerant variety also exhibited rapid upregulation of K+ transporter genes in order to deal with K+/Na+ impairment. This upregulation was not detected in the presence of oxidative stress alone. The importance of the innate antioxidative profile was confirmed by the protective effect of experimentally increased glutathione in salt-treated sensitive cells. Overall, these results underline the importance of specific H2O2 signatures and innate antioxidative systems in modulating ionic and redox homeostasis for salt stress tolerance.
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Affiliation(s)
| | | | - Maria Beatrice Ronci
- Unit of Food Science and Human Nutrition, Campus Bio-Medico University of Rome, Rome, Italy
| | - Vittoria Locato
- Unit of Food Science and Human Nutrition, Campus Bio-Medico University of Rome, Rome, Italy
| | | | - Piergiorgio Stevanato
- Department of Agronomy, Food, Natural Resources, Animal and Environment, DAFNAE, University of Padova, Padova, Italy
| | - Bushra Ijaz
- Department of Biosciences, COMSATS University Islamabad, Islamabad, Pakistan
| | | | - Laura De Gara
- Unit of Food Science and Human Nutrition, Campus Bio-Medico University of Rome, Rome, Italy
- *Correspondence: Laura De Gara,
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32
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You Q, Zhai K, Yang D, Yang W, Wu J, Liu J, Pan W, Wang J, Zhu X, Jian Y, Liu J, Zhang Y, Deng Y, Li Q, Lou Y, Xie Q, He Z. An E3 Ubiquitin Ligase-BAG Protein Module Controls Plant Innate Immunity and Broad-Spectrum Disease Resistance. Cell Host Microbe 2017; 20:758-769. [PMID: 27978435 DOI: 10.1016/j.chom.2016.10.023] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2016] [Revised: 09/29/2016] [Accepted: 10/31/2016] [Indexed: 10/20/2022]
Abstract
Programmed cell death (PCD) and immunity in plants are tightly controlled to promote antimicrobial defense while preventing autoimmunity. However, the mechanisms contributing to this immune homeostasis are poorly understood. Here, we isolated a rice mutant ebr1 (enhanced blight and blast resistance 1) that shows enhanced broad-spectrum bacterial and fungal disease resistance, but displays spontaneous PCD, autoimmunity, and stunted growth. EBR1 encodes an E3 ubiquitin ligase that interacts with OsBAG4, which belongs to the BAG (Bcl-2-associated athanogene) family that functions in cell death, growth arrest, and immune responses in mammals. EBR1 directly targets OsBAG4 for ubiquitination-mediated degradation. Elevated levels of OsBAG4 in rice are necessary and sufficient to trigger PCD and enhanced disease resistance to pathogenic infection, most likely by activating pathogen-associated molecular patterns-triggered immunity (PTI). Together, our study suggests that an E3-BAG module orchestrates innate immune homeostasis and coordinates the trade-off between defense and growth in plants.
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Affiliation(s)
- Quanyuan You
- National Key Laboratory of Plant Molecular Genetics and National Center of Plant Gene Research, Institute of Plant Physiology & Ecology, Chinese Academy of Sciences, Shanghai 200032, China; University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Keran Zhai
- National Key Laboratory of Plant Molecular Genetics and National Center of Plant Gene Research, Institute of Plant Physiology & Ecology, Chinese Academy of Sciences, Shanghai 200032, China; University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Donglei Yang
- National Key Laboratory of Plant Molecular Genetics and National Center of Plant Gene Research, Institute of Plant Physiology & Ecology, Chinese Academy of Sciences, Shanghai 200032, China; State Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Weibing Yang
- National Key Laboratory of Plant Molecular Genetics and National Center of Plant Gene Research, Institute of Plant Physiology & Ecology, Chinese Academy of Sciences, Shanghai 200032, China
| | - Jingni Wu
- National Key Laboratory of Plant Molecular Genetics and National Center of Plant Gene Research, Institute of Plant Physiology & Ecology, Chinese Academy of Sciences, Shanghai 200032, China
| | - Junzhong Liu
- National Key Laboratory of Plant Molecular Genetics and National Center of Plant Gene Research, Institute of Plant Physiology & Ecology, Chinese Academy of Sciences, Shanghai 200032, China; University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Wenbo Pan
- Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Jianjun Wang
- Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Xudong Zhu
- China National Rice Research Institute, Hangzhou 310006, China
| | - Yikun Jian
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310029, China
| | - Jiyun Liu
- National Key Laboratory of Plant Molecular Genetics and National Center of Plant Gene Research, Institute of Plant Physiology & Ecology, Chinese Academy of Sciences, Shanghai 200032, China
| | - Yingying Zhang
- National Key Laboratory of Plant Molecular Genetics and National Center of Plant Gene Research, Institute of Plant Physiology & Ecology, Chinese Academy of Sciences, Shanghai 200032, China
| | - Yiwen Deng
- National Key Laboratory of Plant Molecular Genetics and National Center of Plant Gene Research, Institute of Plant Physiology & Ecology, Chinese Academy of Sciences, Shanghai 200032, China
| | - Qun Li
- National Key Laboratory of Plant Molecular Genetics and National Center of Plant Gene Research, Institute of Plant Physiology & Ecology, Chinese Academy of Sciences, Shanghai 200032, China
| | - Yonggen Lou
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310029, China
| | - Qi Xie
- Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Zuhua He
- National Key Laboratory of Plant Molecular Genetics and National Center of Plant Gene Research, Institute of Plant Physiology & Ecology, Chinese Academy of Sciences, Shanghai 200032, China; Collaborative Innovation Center of Genetics and Development, Institute of Plant Physiology & Ecology, Chinese Academy of Sciences, Shanghai 200032, China.
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Chen R, Cheng Y, Han S, Van Handel B, Dong L, Li X, Xie X. Whole genome sequencing and comparative transcriptome analysis of a novel seawater adapted, salt-resistant rice cultivar - sea rice 86. BMC Genomics 2017; 18:655. [PMID: 28835208 PMCID: PMC5569538 DOI: 10.1186/s12864-017-4037-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 08/08/2017] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND Rice (Oryza sativa) is critical for human nutrition worldwide. Due to a growing population, cultivars that produce high yields in high salinity soil are of major importance. Here we describe the discovery and molecular characterization of a novel sea water adapted rice strain, Sea Rice 86 (SR86). RESULTS SR86 can produce nutritious grains when grown in high salinity soil. Compared to a salt resistant rice cultivar, Yanfen 47 (YF47), SR86 grows in environments with up to 3X the salt content, and produces grains with significantly higher nutrient content in 12 measured components, including 2.9X calcium and 20X dietary fiber. Whole genome sequencing demonstrated that SR86 is a relatively ancient indica subspecies, phylogenetically close to the divergence point of the major rice varietals. SR86 has 12 chromosomes with a total genome size of 373,130,791 bps, slightly smaller than other sequenced rice genomes. Via comparison with 3000 rice genomes, we identified 42,359 putative unique, high impact variants in SR86. Transcriptome analysis of SR86 grown under normal and high saline conditions identified a large number of differentially expressed and salt-induced genes. Many of those genes fall into several gene families that have established or suggested roles in salt tolerance, while others represent potentially novel mediators of salt adaptation. CONCLUSIONS Whole genome sequencing and transcriptome analysis of SR86 has laid a foundation for further molecular characterization of several desirable traits in this novel rice cultivar. A number of candidate genes related to salt adaptation identified in this study will be valuable for further functional investigation.
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Affiliation(s)
- Risheng Chen
- Wuhan Oceanrice International Biotech Co.,Ltd, 30 Rongzhong International building, High-tech Development Zone, No.889 Luoyu Road, Wuhan, FL 430074 China
| | - Yunfeng Cheng
- Wuhan Oceanrice International Biotech Co.,Ltd, 30 Rongzhong International building, High-tech Development Zone, No.889 Luoyu Road, Wuhan, FL 430074 China
| | - Suying Han
- Laboratory of Cell Biology, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, People’s Republic of China
| | - Ben Van Handel
- Owachomo Consulting, LLC, 1101 Laveta Terrace, Ste. 19, Los Angeles, CA 90026 USA
| | - Ling Dong
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California at Los Angels, 650 Charles Young Dr, Los Angeles, CA 90095 USA
| | - Xinmin Li
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California at Los Angels, 650 Charles Young Dr, Los Angeles, CA 90095 USA
| | - Xiaoqing Xie
- Wuhan Oceanrice International Biotech Co.,Ltd, 30 Rongzhong International building, High-tech Development Zone, No.889 Luoyu Road, Wuhan, FL 430074 China
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Kabbage M, Kessens R, Bartholomay LC, Williams B. The Life and Death of a Plant Cell. ANNUAL REVIEW OF PLANT BIOLOGY 2017; 68:375-404. [PMID: 28125285 DOI: 10.1146/annurev-arplant-043015-111655] [Citation(s) in RCA: 94] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Like all eukaryotic organisms, plants possess an innate program for controlled cellular demise termed programmed cell death (PCD). Despite the functional conservation of PCD across broad evolutionary distances, an understanding of the molecular machinery underpinning this fundamental program in plants remains largely elusive. As in mammalian PCD, the regulation of plant PCD is critical to development, homeostasis, and proper responses to stress. Evidence is emerging that autophagy is key to the regulation of PCD in plants and that it can dictate the outcomes of PCD execution under various scenarios. Here, we provide a broad and comparative overview of PCD processes in plants, with an emphasis on stress-induced PCD. We also discuss the implications of the paradox that is functional conservation of apoptotic hallmarks in plants in the absence of core mammalian apoptosis regulators, what that means, and whether an equivalent form of death occurs in plants.
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Affiliation(s)
- Mehdi Kabbage
- Department of Plant Pathology, University of Wisconsin-Madison, Madison, Wisconsin 53706;
| | - Ryan Kessens
- Department of Plant Pathology, University of Wisconsin-Madison, Madison, Wisconsin 53706;
| | - Lyric C Bartholomay
- Department of Pathobiological Sciences, University of Wisconsin-Madison, Madison, Wisconsin 53706
| | - Brett Williams
- Centre for Tropical Crops and Biocommodities, Queensland University of Technology, Brisbane, Queensland 4001, Australia;
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Nan A, Zhou X, Chen L, Liu M, Zhang N, Zhang L, Luo Y, Liu Z, Dai L, Jiang Y. A transcribed ultraconserved noncoding RNA, Uc.173, is a key molecule for the inhibition of lead-induced neuronal apoptosis. Oncotarget 2016; 7:112-24. [PMID: 26683706 PMCID: PMC4807986 DOI: 10.18632/oncotarget.6590] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Accepted: 11/26/2015] [Indexed: 01/05/2023] Open
Abstract
As a common toxic metal, lead has significant neurotoxicity to brain development. Long non-coding RNAs (lncRNAs) function in multiple biological processes. However, whether lncRNAs are involved in lead-induced neurotoxicity remains unclear. Uc.173 is a lncRNA from a transcribed ultra-conservative region (T-UCR) of human, mouse and rat genomes. We established a lead-induced nerve injury mouse model. It showed the levels of Uc.173 decreased significantly in hippocampus tissue and serum of the model. We further tested the expression of Uc.173 in serum of lead-exposed children, which also showed a tendency to decrease. To explore the effects of Uc.173 on lead-induced nerve injury, we overexpressed Uc.173 in an N2a mouse nerve cell line and found Uc.173 had an inhibitory effect on lead-induced apoptosis of N2a. To investigate the molecular mechanisms of Uc.173 in apoptosis associated with lead-induced nerve injury, we predicted the target microRNAs of Uc.173 by using miRanda, TargetScan and RegRNA. After performing quantitative real-time PCR and bioinformatics analysis, we showed Uc.173 might inter-regulate with miR-291a-3p in lead-induced apoptosis and regulate apoptosis-associated genes. Our study suggests Uc.173 significantly inhibits the apoptosis of nerve cells, which may be mediated by inter-regulation with miRNAs in lead-induced nerve injury.
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Affiliation(s)
- Aruo Nan
- State Key Laboratory of Respiratory Disease, Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, PR China
| | - Xinke Zhou
- Institute for Chemical Carcinogenesis, The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, PR China
| | - Lijian Chen
- State Key Laboratory of Respiratory Disease, Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, PR China
| | - Meiling Liu
- State Key Laboratory of Respiratory Disease, Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, PR China
| | - Nan Zhang
- State Key Laboratory of Respiratory Disease, Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, PR China
| | - Li Zhang
- School of Public Health, Guangdong Pharmaceutical University, Guangzhou, PR China
| | - Yuanwei Luo
- Institute for Chemical Carcinogenesis, The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, PR China
| | - Zhenzhong Liu
- State Key Laboratory of Respiratory Disease, Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, PR China
| | - Lijun Dai
- Laboratory Animal Center, Guangzhou Medical University, Guangzhou, PR China
| | - Yiguo Jiang
- State Key Laboratory of Respiratory Disease, Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, PR China
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36
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Improvement of Salinity Stress Tolerance in Rice: Challenges and Opportunities. AGRONOMY-BASEL 2016. [DOI: 10.3390/agronomy6040054] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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37
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Zhang Z, He Z, Xu S, Li X, Guo W, Yang Y, Zhong C, Zhou R, Shi S. Transcriptome analyses provide insights into the phylogeny and adaptive evolution of the mangrove fern genus Acrostichum. Sci Rep 2016; 6:35634. [PMID: 27782130 PMCID: PMC5080628 DOI: 10.1038/srep35634] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Accepted: 10/03/2016] [Indexed: 12/26/2022] Open
Abstract
The mangrove fern genus Acrostichum grows in the extremely unstable marine intertidal zone under harsh conditions, such as high salt concentrations, tidal rhythms and long-term climate changes. To explore the phylogenetic relationships and molecular mechanisms underlying adaptations in this genus, we sequenced the transcriptomes of two species of Acrostichum, A. aureum and A. speciosum, as well as a species in the sister genus, Ceratopteris thalictroides. We obtained 47,517, 36,420 and 60,823 unigenes for the three ferns, of which 24.39-45.63% were annotated using public databases. The estimated divergence time revealed that Acrostichum adapted to the coastal region during the late Cretaceous, whereas the two mangrove ferns from the Indo West-Pacific (IWP) area diverged more recently. Two methods (the modified branch-site model and the Kh method) were used to identify several positively selected genes, which may contribute to differential adaptation of the two Acrostichum species to different light and salt conditions. Our study provides abundant transcriptome data and new insights into the evolution and adaptations of mangrove ferns in the inhospitable intertidal zone.
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Affiliation(s)
- Zhang Zhang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, Key Laboratory of Biodiversity Dynamics and Conservation of Guangdong Higher Education Institutes, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Ziwen He
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, Key Laboratory of Biodiversity Dynamics and Conservation of Guangdong Higher Education Institutes, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Shaohua Xu
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, Key Laboratory of Biodiversity Dynamics and Conservation of Guangdong Higher Education Institutes, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Xinnian Li
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, Key Laboratory of Biodiversity Dynamics and Conservation of Guangdong Higher Education Institutes, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Wuxia Guo
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, Key Laboratory of Biodiversity Dynamics and Conservation of Guangdong Higher Education Institutes, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Yuchen Yang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, Key Laboratory of Biodiversity Dynamics and Conservation of Guangdong Higher Education Institutes, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Cairong Zhong
- Hainan Dongzhai Harbor National Nature Reserve, Haikou, 571129, China
| | - Renchao Zhou
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, Key Laboratory of Biodiversity Dynamics and Conservation of Guangdong Higher Education Institutes, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Suhua Shi
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, Key Laboratory of Biodiversity Dynamics and Conservation of Guangdong Higher Education Institutes, Sun Yat-Sen University, Guangzhou, 510275, China
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Pan YJ, Liu L, Lin YC, Zu YG, Li LP, Tang ZH. Ethylene Antagonizes Salt-Induced Growth Retardation and Cell Death Process via Transcriptional Controlling of Ethylene-, BAG- and Senescence-Associated Genes in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2016; 7:696. [PMID: 27242886 PMCID: PMC4872043 DOI: 10.3389/fpls.2016.00696] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 05/06/2016] [Indexed: 05/26/2023]
Abstract
The existing question whether ethylene is involved in the modulation of salt-induced cell death to mediate plant salt tolerance is important for understanding the salt tolerance mechanisms. Here, we employed Arabidopsis plants to study the possible role of ethylene in salt-induced growth inhibition and programmed cell death (PCD) profiles. The root length, DNA ladder and cell death indicated by Evan's blue detection were measured by compared to the control or salt-stressed seedlings. Secondly, the protoplasts isolated from plant leaves and dyed with Annexin V-FITC were subjected to flow cytometric (FCM) assay. Our results showed that ethylene works effectively in seedling protoplasts, antagonizing salt-included root retardation and restraining cell death both in seedlings or protoplasts. Due to salinity, the entire or partial insensitivity of ethylene signaling resulted in an elevated levels of cell death in ein2-5 and ein3-1 plants and the event were amended in ctr1-1 plants after salt treatment. The subsequent experiment with exogenous ACC further corroborated that ethylene could modulate salt-induced PCD process actively. Plant Bcl-2-associated athanogene (BAG) family genes are recently identified to play an extensive role in plant PCD processes ranging from growth, development to stress responses and even cell death. Our result showed that salinity alone significantly suppressed the transcripts of BAG6, BAG7 and addition of ACC in the saline solution could obviously re-activate BAG6 and BAG7 expressions, which might play a key role to inhibit the salt-induced cell death. In summary, our research implies that ethylene and salinity antagonistically control BAG family-, ethylene-, and senescence-related genes to alleviate the salt-induced cell death.
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Affiliation(s)
- Ya-Jie Pan
- Key Laboratory of Plant Ecology, Northeast Forestry UniversityHarbin, China
| | - Ling Liu
- Key Laboratory of Plant Ecology, Northeast Forestry UniversityHarbin, China
| | - Ying-Chao Lin
- Key Laboratory of Plant Ecology, Northeast Forestry UniversityHarbin, China
- Guizhou Academy of Tobacco ResearchGuiyang, China
| | - Yuan-Gang Zu
- Key Laboratory of Plant Ecology, Northeast Forestry UniversityHarbin, China
| | - Lei-Peng Li
- Key Laboratory of Plant Ecology, Northeast Forestry UniversityHarbin, China
| | - Zhong-Hua Tang
- Key Laboratory of Plant Ecology, Northeast Forestry UniversityHarbin, China
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Li Y, Kabbage M, Liu W, Dickman MB. Aspartyl Protease-Mediated Cleavage of BAG6 Is Necessary for Autophagy and Fungal Resistance in Plants. THE PLANT CELL 2016; 28:233-47. [PMID: 26739014 PMCID: PMC4746679 DOI: 10.1105/tpc.15.00626] [Citation(s) in RCA: 126] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 11/24/2015] [Accepted: 12/31/2015] [Indexed: 05/04/2023]
Abstract
The Bcl-2-associated athanogene (BAG) family is an evolutionarily conserved group of cochaperones that modulate numerous cellular processes. Previously we found that Arabidopsis thaliana BAG6 is required for basal immunity against the fungal phytopathogen Botrytis cinerea. However, the mechanisms by which BAG6 controls immunity are obscure. Here, we address this important question by determining the molecular mechanisms responsible for BAG6-mediated basal resistance. We show that Arabidopsis BAG6 is cleaved in vivo in a caspase-1-like-dependent manner and via a combination of pull-downs, mass spectrometry, yeast two-hybrid assays, and chemical genomics, we demonstrate that BAG6 interacts with a C2 GRAM domain protein (BAGP1) and an aspartyl protease (APCB1), both of which are required for BAG6 processing. Furthermore, fluorescence and transmission electron microscopy established that BAG6 cleavage triggers autophagy in the host that coincides with disease resistance. Targeted inactivation of BAGP1 or APCB1 results in the blocking of BAG6 processing and loss of resistance. Mutation of the cleavage site blocks cleavage and inhibits autophagy in plants; disease resistance is also compromised. Taken together, these results identify a mechanism that couples an aspartyl protease with a molecular cochaperone to trigger autophagy and plant defense, providing a key link between fungal recognition and the induction of cell death and resistance.
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Affiliation(s)
- Yurong Li
- Institute for Plant Genomics and Biotechnology, Texas A&M University, College Station, Texas 77843 Department of Plant Pathology and Microbiology, Texas A&M University, College Station, Texas 77843
| | - Mehdi Kabbage
- Department of Plant Pathology, University of Wisconsin-Madison, Madison, Wisconsin 53706
| | - Wende Liu
- Institute for Plant Genomics and Biotechnology, Texas A&M University, College Station, Texas 77843
| | - Martin B Dickman
- Institute for Plant Genomics and Biotechnology, Texas A&M University, College Station, Texas 77843 Department of Plant Pathology and Microbiology, Texas A&M University, College Station, Texas 77843
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Das P, Nutan KK, Singla-Pareek SL, Pareek A. Understanding salinity responses and adopting 'omics-based' approaches to generate salinity tolerant cultivars of rice. FRONTIERS IN PLANT SCIENCE 2015; 6:712. [PMID: 26442026 PMCID: PMC4563168 DOI: 10.3389/fpls.2015.00712] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 08/25/2015] [Indexed: 05/21/2023]
Abstract
Soil salinity is one of the main constraints affecting production of rice worldwide, by reducing growth, pollen viability as well as yield of the plant. Therefore, detailed understanding of the response of rice towards soil salinity at the physiological and molecular level is a prerequisite for its effective management. Various approaches have been adopted by molecular biologists or breeders to understand the mechanism for salinity tolerance in plants and to develop salt tolerant rice cultivars. Genome wide analysis using 'omics-based' tools followed by identification and functional validation of individual genes is becoming one of the popular approaches to tackle this task. On the other hand, mutation breeding and insertional mutagenesis has also been exploited to obtain salinity tolerant crop plants. This review looks into various responses at cellular and whole plant level generated in rice plants toward salinity stress thus, evaluating the suitability of intervention of functional genomics to raise stress tolerant plants. We have tried to highlight the usefulness of the contemporary 'omics-based' approaches such as genomics, proteomics, transcriptomics and phenomics towards dissecting out the salinity tolerance trait in rice. In addition, we have highlighted the importance of integration of various 'omics' approaches to develop an understanding of the machinery involved in salinity response in rice and to move forward to develop salt tolerant cultivars of rice.
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Affiliation(s)
- Priyanka Das
- Stress Physiology and Molecular Biology Laboratory, School of Life Sciences, Jawaharlal Nehru UniversityNew Delhi, India
| | - Kamlesh K. Nutan
- Stress Physiology and Molecular Biology Laboratory, School of Life Sciences, Jawaharlal Nehru UniversityNew Delhi, India
| | - Sneh L. Singla-Pareek
- Plant Molecular Biology Group, International Centre for Genetic Engineering and BiotechnologyNew Delhi, India
| | - Ashwani Pareek
- Stress Physiology and Molecular Biology Laboratory, School of Life Sciences, Jawaharlal Nehru UniversityNew Delhi, India
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