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Hsiao AS. Protein Disorder in Plant Stress Adaptation: From Late Embryogenesis Abundant to Other Intrinsically Disordered Proteins. Int J Mol Sci 2024; 25:1178. [PMID: 38256256 PMCID: PMC10816898 DOI: 10.3390/ijms25021178] [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: 10/29/2023] [Revised: 01/15/2024] [Accepted: 01/16/2024] [Indexed: 01/24/2024] Open
Abstract
Global climate change has caused severe abiotic and biotic stresses, affecting plant growth and food security. The mechanical understanding of plant stress responses is critical for achieving sustainable agriculture. Intrinsically disordered proteins (IDPs) are a group of proteins without unique three-dimensional structures. The environmental sensitivity and structural flexibility of IDPs contribute to the growth and developmental plasticity for sessile plants to deal with environmental challenges. This article discusses the roles of various disordered proteins in plant stress tolerance and resistance, describes the current mechanistic insights into unstructured proteins such as the disorder-to-order transition for adopting secondary structures to interact with specific partners (i.e., cellular membranes, membrane proteins, metal ions, and DNA), and elucidates the roles of liquid-liquid phase separation driven by protein disorder in stress responses. By comparing IDP studies in animal systems, this article provides conceptual principles of plant protein disorder in stress adaptation, reveals the current research gaps, and advises on the future research direction. The highlighting of relevant unanswered questions in plant protein disorder research aims to encourage more studies on these emerging topics to understand the mechanisms of action behind their stress resistance phenotypes.
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Affiliation(s)
- An-Shan Hsiao
- Department of Biochemistry and Metabolism, John Innes Centre, Norwich Research Park, Norwich NR4 7UH, UK
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Liu H, Ding Q, Cao L, Huang Z, Wang Z, Zhang M, Jian S. Identification of the Abscisic Acid-, Stress-, and Ripening-Induced ( ASR) Family Involved in the Adaptation of Tetragonia tetragonoides (Pall.) Kuntze to Saline-Alkaline and Drought Habitats. Int J Mol Sci 2023; 24:15815. [PMID: 37958798 PMCID: PMC10650104 DOI: 10.3390/ijms242115815] [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: 10/12/2023] [Revised: 10/28/2023] [Accepted: 10/30/2023] [Indexed: 11/15/2023] Open
Abstract
Tetragonia tetragonoides (Pall.) Kuntze (Aizoaceae, 2n = 2x = 32), a vegetable used for both food and medicine, is a halophyte that is widely distributed in the coastal areas of the tropics and subtropics. Saline-alkaline soils and drought stress are two major abiotic stressors that significantly affect the distribution of tropical coastal plants. Abscisic acid-, stress-, and ripening-induced (ASR) proteins belong to a family of plant-specific, small, and hydrophilic proteins with important roles in plant development, growth, and abiotic stress responses. Here, we characterized the ASR gene family from T. tetragonoides, which contained 13 paralogous genes, and divided TtASRs into two subfamilies based on the phylogenetic tree. The TtASR genes were located on two chromosomes, and segmental duplication events were illustrated as the main duplication method. Additionally, the expression levels of TtASRs were induced by multiple abiotic stressors, indicating that this gene family could participate widely in the response to stress. Furthermore, several TtASR genes were cloned and functionally identified using a yeast expression system. Our results indicate that TtASRs play important roles in T. tetragonoides' responses to saline-alkaline soils and drought stress. These findings not only increase our understanding of the role ASRs play in mediating halophyte adaptation to extreme environments but also improve our knowledge of plant ASR protein evolution.
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Affiliation(s)
- Hao Liu
- Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; (H.L.); (Q.D.); (L.C.); (Z.H.); (Z.W.)
- University of Chinese Academy of Sciences, Beijing 100039, China
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, Center for Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Qianqian Ding
- Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; (H.L.); (Q.D.); (L.C.); (Z.H.); (Z.W.)
- University of Chinese Academy of Sciences, Beijing 100039, China
| | - Lisha Cao
- Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; (H.L.); (Q.D.); (L.C.); (Z.H.); (Z.W.)
- University of Chinese Academy of Sciences, Beijing 100039, China
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, Center for Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Zengwang Huang
- Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; (H.L.); (Q.D.); (L.C.); (Z.H.); (Z.W.)
- University of Chinese Academy of Sciences, Beijing 100039, China
| | - Zhengfeng Wang
- Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; (H.L.); (Q.D.); (L.C.); (Z.H.); (Z.W.)
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, Center for Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Guangzhou 510650, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
| | - Mei Zhang
- Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; (H.L.); (Q.D.); (L.C.); (Z.H.); (Z.W.)
- Center of Economic Botany, Core Botanical Gardens, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Shuguang Jian
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, Center for Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Guangzhou 510650, China
- CAS Engineering Laboratory for Vegetation Ecosystem Restoration on Islands and Coastal Zones, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
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Cao YH, Ren W, Gao HJ, Lü XP, Zhao Q, Zhang H, Rensing C, Zhang JL. HaASR2 from Haloxylon ammodendron confers drought and salt tolerance in plants. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2023; 328:111572. [PMID: 36563942 DOI: 10.1016/j.plantsci.2022.111572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 12/13/2022] [Accepted: 12/15/2022] [Indexed: 06/17/2023]
Abstract
Abscisic acid (ABA), stress, and ripening-induced proteins (ASR), which belong to the ABA/WDS domain superfamily, are involved in the plant response to abiotic stresses. Haloxylon ammodendron is a succulent xerohalophyte species that exhibits strong resistance to abiotic stress. In this study, we isolated HaASR2 from H. ammodendron and demonstrated its detailed molecular function for drought and salt stress tolerance. HaASR2 interacted with the HaNHX1 protein, and its expression was significantly up-regulated under osmotic stress. Overexpression of HaASR2 improved drought and salt tolerance by enhancing water use efficiency and photosynthetic capacity in Arabidopsis thaliana. Overexpression of HaASR2 maintained the homeostasis of reactive oxygen species (ROS) and decreased sensitivity to exogenous ABA and endogenous ABA levels by down-regulating ABA biosynthesis genes under drought stress. Furthermore, a transcriptomic comparison between wild-type and HaASR2 transgenic Arabidopsis plants indicated that HaASR2 significantly induced the expression of 896 genes in roots and 406 genes in shoots under osmotic stress. Gene ontology (GO) enrichment analysis showed that those DEGs were mainly involved in ROS scavenging, metal ion homeostasis, response to hormone stimulus, etc. The results demonstrated that HaASR2 from the desert shrub, H. ammodendron, plays a critical role in plant adaptation to drought and salt stress and could be a promising gene for the genetic improvement of crop abiotic stress tolerance.
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Affiliation(s)
- Yan-Hua Cao
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Lanzhou 730000, People's Republic of China; Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Lanzhou 730000, People's Republic of China; Engineering Research Center of Grassland Industry, Ministry of Education, Lanzhou 730000, People's Republic of China; College of Pastoral Agricultural Science and Technology, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Wei Ren
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Lanzhou 730000, People's Republic of China; Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Lanzhou 730000, People's Republic of China; Engineering Research Center of Grassland Industry, Ministry of Education, Lanzhou 730000, People's Republic of China; College of Pastoral Agricultural Science and Technology, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Hui-Juan Gao
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Lanzhou 730000, People's Republic of China; Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Lanzhou 730000, People's Republic of China; Engineering Research Center of Grassland Industry, Ministry of Education, Lanzhou 730000, People's Republic of China; College of Pastoral Agricultural Science and Technology, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Xin-Pei Lü
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Lanzhou 730000, People's Republic of China; Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Lanzhou 730000, People's Republic of China; Engineering Research Center of Grassland Industry, Ministry of Education, Lanzhou 730000, People's Republic of China; College of Pastoral Agricultural Science and Technology, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Qi Zhao
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Lanzhou 730000, People's Republic of China; Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Lanzhou 730000, People's Republic of China; Engineering Research Center of Grassland Industry, Ministry of Education, Lanzhou 730000, People's Republic of China; College of Pastoral Agricultural Science and Technology, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Hong Zhang
- Department of Biological Sciences, Texas Tech University, Lubbock, TX 79409, USA
| | - Christopher Rensing
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Lanzhou 730000, People's Republic of China; Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Lanzhou 730000, People's Republic of China; Engineering Research Center of Grassland Industry, Ministry of Education, Lanzhou 730000, People's Republic of China; College of Pastoral Agricultural Science and Technology, Lanzhou University, Lanzhou 730000, People's Republic of China; Institute of Environmental Microbiology, Fujian Agriculture and Forestry University, Fuzhou 350002, People's Republic of China.
| | - Jin-Lin Zhang
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Lanzhou 730000, People's Republic of China; Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Lanzhou 730000, People's Republic of China; Engineering Research Center of Grassland Industry, Ministry of Education, Lanzhou 730000, People's Republic of China; College of Pastoral Agricultural Science and Technology, Lanzhou University, Lanzhou 730000, People's Republic of China.
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Yoon JS, Kim JY, Kim DY, Seo YW. A novel wheat ASR gene, TaASR2D, enhances drought tolerance in Brachypodium distachyon. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 159:400-414. [PMID: 33229191 DOI: 10.1016/j.plaphy.2020.11.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 11/13/2020] [Indexed: 06/11/2023]
Abstract
Abscisic acid-, stress-, and ripening-induced (ASR) proteins play an important role in protecting plants against adverse environmental conditions. Here, we identified 24 ASR genes in the wheat genome and analyzed their characteristics. Among these, five ASR genes highly induced by abscisic acid (ABA) and polyethylene glycol were cloned and further characterized. The TaASR genes were expressed in response to different abiotic stresses and ABA and were found to be localized in the nucleus and plasma membrane of transformed tobacco cells. Brachypodium distachyon transgenic plants overexpressing TaASR2D showed enhanced drought tolerance by regulating leaf transpiration. The expression levels of stress-related and ABA-responsive genes were higher in transgenic plants than in wild-type plants under drought stress conditions. Moreover, overexpression of TaASR2D increased the levels of both endogenous ABA and hydrogen peroxide in response to drought stress, and these plants showed hypersensitivity to exogenous ABA at the germination stage. Furthermore, plants overexpressing TaASR2D showed increased stomatal closure. Further analysis revealed that TaASR2D interacts with ABA biosynthesis and stress-related proteins in yeast and tobacco plants. Collectively, these findings indicate that TaASR2D plays an important role in the response of plants to drought stress by regulating the ABA biosynthesis pathway and redox homeostasis system.
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Affiliation(s)
- Jin Seok Yoon
- Department of Plant Biotechnology, Korea University, Seongbuk-Gu, Seoul, 02841, Republic of Korea
| | - Jae Yoon Kim
- Department of Plant Biotechnology, Korea University, Seongbuk-Gu, Seoul, 02841, Republic of Korea; Department of Plant Resources, Kongju National University, Yesan, Chungnam, 32439, Republic of Korea
| | - Dae Yeon Kim
- Department of Plant Biotechnology, Korea University, Seongbuk-Gu, Seoul, 02841, Republic of Korea
| | - Yong Weon Seo
- Department of Plant Biotechnology, Korea University, Seongbuk-Gu, Seoul, 02841, Republic of Korea.
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Meena RP, Vishwakarma H, Ghosh G, Gaikwad K, Chellapilla TS, Singh MP, Padaria JC. Novel ASR isolated from drought stress responsive SSH library in pearl millet confers multiple abiotic stress tolerance in PgASR3 transgenic Arabidopsis. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 156:7-19. [PMID: 32891968 DOI: 10.1016/j.plaphy.2020.07.031] [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: 05/10/2020] [Revised: 07/09/2020] [Accepted: 07/15/2020] [Indexed: 05/09/2023]
Abstract
A genomic resource of drought stress responsive genes/ESTs was generated using Suppression Subtractive Hybridization (SSH) approach in a drought stress tolerant Pennisetum glaucum genotype 841B. Fifty five days old plants were subjected to drought stress after withholding water for different time intervals (10 days, 15 days, 20 days and 25 days). A forward subtractive cDNA library was prepared from isolated RNA of leaf tissue. Differential gene expression under drought stress was validated for selected nine contigs by RT-qPCR. A transcript homologous to Setaria italica ASR3 upregulated under drought stress was isolated from genotype 841B and characterized. Heterologous expression of PgASR3 was validated in Arabidopsis and confirmed under multiple abiotic stress conditions. A total of four independent transgenic lines overexpressing gene PgASR3 were analyzed by Southern blot at T1 stage. For drought stress tolerance, three independent lines (T2 stage) were analyzed by biochemical and physiological assays at seedling stage. The growth rate (shoot and root length) of transgenic seedlings improved as compared to WT seedling under differenct abiotic stress conditions. The three transgenic lines were also validated for drought stress tolerance and RT-qPCR analysis, at maturity stage. Under drought stress conditions, the mature transgenic lines showed higher levels of RWC, chlorophyll and proline but lower levels of MDA as compared to WT plants. PgASR3 gene isolated and validated in this study can be utilized for developing abiotic stress tolerant crops.
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Affiliation(s)
| | | | - Gourab Ghosh
- National Institute for Plant Biotechnology, Pusa Campus, New Delhi, India
| | - Kishor Gaikwad
- National Institute for Plant Biotechnology, Pusa Campus, New Delhi, India
| | - Tara Satyavathi Chellapilla
- National Institute for Plant Biotechnology, Pusa Campus, New Delhi, India; Division of Genetics, IARI, Pusa Campus, New Delhi, India
| | - Madan Pal Singh
- Division of Plant Physiology, IARI Pusa Campus, New Delhi, India
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Abscisic Acid, Stress, and Ripening ( TtASR1) Gene as a Functional Marker for Salt Tolerance in Durum Wheat. BIOMED RESEARCH INTERNATIONAL 2020; 2020:7876357. [PMID: 32076614 PMCID: PMC7013306 DOI: 10.1155/2020/7876357] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 01/10/2020] [Accepted: 01/13/2020] [Indexed: 01/08/2023]
Abstract
In semiarid Mediterranean agroecosystems, drought and salinity are the main abiotic stresses hampering wheat productivity and yield instability. Abscisic acid, stress, and ripening (ASR) are small plant proteins and play important roles in different biological processes. In the present study, the TtASR1 gene was isolated and characterized for the first time from durum wheat (Tritucum turgidum L. subsp. durum). TtASR1 is a small gene, about 684 bp long, located on chromosome 4AL, encoding a protein of 136 amino acid residues consisting of a histidine-rich N terminus and C-terminal conserved ABA-WDS domain (Pfam PF02496). Our results showed that TtASR1 protein could function as a chaperone-like protein and improve the viability of E. coli under heat and cold stress and increase the Saccharomyces cerevisiae tolerance under salt and osmotic stress. Transcript expression patterns of TtASR1 revealed that ASRs play important roles in abiotic stress responses in diverse organs. Indeed, TtASR1 was upregulated in leaves by different developmental (ABA) and environmental signals (PEG, salt). In cv. Mahmoudi (salt-tolerant Tunisian durum landraces) roots, TtASR1 was upregulated by salt stress, while it was downregulated in cv. Azizi (salt-sensitive Tunisian durum landraces), supporting the implication of this gene in the salt tolerance mechanism. Taken together and after validation in the plant system, the TtASR1 gene may provide a potential functional marker for marker-assisted selection in a durum wheat breeding program for salt tolerance.
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Ye Y, Lin R, Su H, Chen H, Luo M, Yang L, Zhang M. The functional identification of glycine-rich TtASR from Tetragonia tetragonoides (Pall.) Kuntze involving in plant abiotic stress tolerance. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 143:212-223. [PMID: 31518852 DOI: 10.1016/j.plaphy.2019.09.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 09/06/2019] [Accepted: 09/06/2019] [Indexed: 06/10/2023]
Abstract
In this study, we reported on an ASR gene (TtASR) related to salt/drought tolerance from the edible halophyte Tetragonia tetragonoides (Pall.) Kuntze (Aizoaceae). A phylogenetic analysis revealed that TtASR was evolutionarily close to other two halophytic glycine-rich ASR members, SbASR-1 (from Salicornia brachiate) and SlASR (from Suaeda liaotungensis), with a typical abscisic acid (ABA)/water-deficit stress (WDS) domain at C-terminal. Quantitative RT-PCR analyses showed that TtASR was expressed in all tested different organs of the T. tetragonoides plant and that expression levels were apparently induced after salt, osmotic stress, and ABA treatments in T. tetragonoides seedlings. An induction of TtASR improved the growth performance of yeast and bacteria more than the control under high salinity, osmotic stress, and oxidative stress. TtASR was not a nuclear-specific protein in plant, and the transcriptional activation assay also demonstrated that TtASR could not activate reporter gene's expression in yeast. TtASR overexpressed Arabidopsis plants exhibited higher tolerance for salt/drought and oxidative stresses and lower ROS accumulation than wild type (WT) plants, accompanied by increased CAT, SOD activities, higher proline content, and lower MDA content in vivo. The results indicated that the TtASR was involved in plant responses to salt and drought, probably by mediating water homeostasis or by acting as ROS scavengers, and that it decreased the membrane damage and improved cellular osmotic adjustment that respond to abiotic stresses in microorganisms and plants.
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Affiliation(s)
- Yuyan Ye
- School of Life Sciences, Guangzhou University, Guangzhou, 510006, PR China.
| | - Ruoyi Lin
- Guangdong Provincial Key Laboratory of Applied Botany & Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China; Center of Economic Botany, Core Botanical Gardens, Chinese Academy of Sciences, Guangzhou, 510650, PR China; College of Resources and Environment, University of the Chinese Academy of Sciences, Beijing, 100039, PR China.
| | - Huaxiang Su
- Guangdong Provincial Key Laboratory of Applied Botany & Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China; Center of Economic Botany, Core Botanical Gardens, Chinese Academy of Sciences, Guangzhou, 510650, PR China; College of Life Sciences, University of the Chinese Academy of Sciences, Beijing, 100039, PR China.
| | - Hongfeng Chen
- Guangdong Provincial Key Laboratory of Applied Botany & Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China; Center of Economic Botany, Core Botanical Gardens, Chinese Academy of Sciences, Guangzhou, 510650, PR China.
| | - Ming Luo
- Guangdong Provincial Key Laboratory of Applied Botany & Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China; Center of Economic Botany, Core Botanical Gardens, Chinese Academy of Sciences, Guangzhou, 510650, PR China.
| | - Lixiang Yang
- School of Life Sciences, Guangzhou University, Guangzhou, 510006, PR China.
| | - Mei Zhang
- Guangdong Provincial Key Laboratory of Applied Botany & Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China; Center of Economic Botany, Core Botanical Gardens, Chinese Academy of Sciences, Guangzhou, 510650, PR China.
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Farhat S, Jain N, Singh N, Sreevathsa R, Dash PK, Rai R, Yadav S, Kumar P, Sarkar AK, Jain A, Singh NK, Rai V. CRISPR-Cas9 directed genome engineering for enhancing salt stress tolerance in rice. Semin Cell Dev Biol 2019; 96:91-99. [PMID: 31075379 DOI: 10.1016/j.semcdb.2019.05.003] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 05/04/2019] [Accepted: 05/06/2019] [Indexed: 12/20/2022]
Abstract
Crop productivity in rice is harshly limited due to high concentration of salt in the soil. To understand the intricacies of the mechanism it is important to unravel the key pathways operating inside the plant cell. Emerging state-of-the art technologies have provided the tools to discover the key components inside the plant cell for salt tolerance. Among the molecular entities, transcription factors and/or other important components of sensing and signaling cascades have been the attractive targets and the role of NHX and SOS1 transporters amply described. Not only marker assisted programs but also transgenic approaches by using reverse genetic strategies (knockout or knockdown) or overexpression have been extensively used to engineer rice crop. CRISPR/Cas is an attractive paradigm and provides the feasibility for manipulating several genes simultaneously. Here, in this review we highlight some of the molecular entities that could be potentially targeted for generating rice amenable to sustain growth under high salinity conditions by employing CRISPR/Cas. We also try to address key questions for rice salt stress tolerance other than what is already known.
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Affiliation(s)
- Sufia Farhat
- National Institute for Plant Biotechnology, IARI, PUSA Campus, New Delhi 110012, India.
| | - Neha Jain
- National Institute for Plant Biotechnology, IARI, PUSA Campus, New Delhi 110012, India.
| | - Nisha Singh
- National Institute for Plant Biotechnology, IARI, PUSA Campus, New Delhi 110012, India.
| | - Rohini Sreevathsa
- National Institute for Plant Biotechnology, IARI, PUSA Campus, New Delhi 110012, India.
| | - Prasanta K Dash
- National Institute for Plant Biotechnology, IARI, PUSA Campus, New Delhi 110012, India.
| | - Rhitu Rai
- National Institute for Plant Biotechnology, IARI, PUSA Campus, New Delhi 110012, India.
| | - Sandeep Yadav
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi 110067, India.
| | - Pramod Kumar
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi 110067, India.
| | - Ananda K Sarkar
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi 110067, India.
| | - Ajay Jain
- Department of Biotechnology, Amity University, Jaipur, India.
| | - Nagendra K Singh
- National Institute for Plant Biotechnology, IARI, PUSA Campus, New Delhi 110012, India.
| | - Vandna Rai
- National Institute for Plant Biotechnology, IARI, PUSA Campus, New Delhi 110012, India.
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Zhang M, Zhang H, Zheng JX, Mo H, Xia KF, Jian SG. Functional Identification of Salt-Stress-Related Genes Using the FOX Hunting System from Ipomoea pes-caprae. Int J Mol Sci 2018; 19:ijms19113446. [PMID: 30400210 PMCID: PMC6274920 DOI: 10.3390/ijms19113446] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Revised: 10/09/2018] [Accepted: 10/31/2018] [Indexed: 01/02/2023] Open
Abstract
Ipomoea pes-caprae is a seashore halophytic plant and is therefore a good model for studying the molecular mechanisms underlying salt and stress tolerance in plant research. Here, we performed Full-length cDNA Over-eXpressor (FOX) gene hunting with a functional screening of a cDNA library using a salt-sensitive yeast mutant strain to isolate the salt-stress-related genes of I. pes-caprae (IpSR genes). The library was screened for genes that complemented the salt defect of yeast mutant AXT3 and could grow in the presence of 75 mM NaCl. We obtained 38 candidate salt-stress-related full-length cDNA clones from the I. pes-caprae cDNA library. The genes are predicted to encode proteins involved in water deficit, reactive oxygen species (ROS) scavenging, cellular vesicle trafficking, metabolic enzymes, and signal transduction factors. When combined with the quantitative reverse transcription-polymerase chain reaction (qRT-PCR) analyses, several potential functional salt-tolerance-related genes were emphasized. This approach provides a rapid assay system for the large-scale screening of I. pes-caprae genes involved in the salt stress response and supports the identification of genes responsible for the molecular mechanisms of salt tolerance.
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Affiliation(s)
- Mei Zhang
- Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
| | - Hui Zhang
- Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
- University of the Chinese Academy of Sciences, Beijing 100039, China.
| | - Jie-Xuan Zheng
- Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
- University of the Chinese Academy of Sciences, Beijing 100039, China.
| | - Hui Mo
- Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
| | - Kuai-Fei Xia
- Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
| | - Shu-Guang Jian
- Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
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Ipomoea pes-caprae IpASR Improves Salinity and Drought Tolerance in Transgenic Escherichia coli and Arabidopsis. Int J Mol Sci 2018; 19:ijms19082252. [PMID: 30071625 PMCID: PMC6121548 DOI: 10.3390/ijms19082252] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Revised: 07/26/2018] [Accepted: 07/30/2018] [Indexed: 01/03/2023] Open
Abstract
Ipomoea pes-caprae L. is an extremophile halophyte with strong adaptability to seawater and drought. It is widely used in the ecological restoration of coastal areas or degraded islands in tropical and subtropical regions. In this study, a new abscisic acid, stressandripening (ASR) gene, IpASR, was reported, and is mainly associated with biological functions involved in salt and drought tolerance. Sequence analysis of IpASR showed that this protein contains an ABA/WDS (abscisic acid/water deficit stress) domain, which is a common feature of all plant ASR members. Overexpression of IpASR improved Escherichia coli growth performance compared with the control under abiotic stress treatment. The transgenic overexpressing IpASR Arabidopsis showed higher tolerance to salt and drought stress than the wild type and lower accumulation of hydrogen peroxide (H2O2) and superoxide (O2−) accompanied by increased antioxidant enzyme activity in vivo. IpASR exhibits transcription factor’s activity. Therefore, the overexpression of IpASR in Arabidopsis is supposed to influence the expression of some genes involved in anti-oxidative and abiotic stresses. The results indicate that IpASR is involved in the plant response to salt and drought and probably acts as a reactive oxygen species scavenger or transcription factor, and therefore influences physiological processes associated with various abiotic stresses in plants.
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Li N, Wei S, Chen J, Yang F, Kong L, Chen C, Ding X, Chu Z. OsASR2 regulates the expression of a defence-related gene, Os2H16, by targeting the GT-1 cis-element. PLANT BIOTECHNOLOGY JOURNAL 2018; 16:771-783. [PMID: 28869785 PMCID: PMC5814579 DOI: 10.1111/pbi.12827] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 08/23/2017] [Indexed: 05/11/2023]
Abstract
The GT-1 cis-element widely exists in many plant gene promoters. However, the molecular mechanism that underlies the response of the GT-1 cis-element to abiotic and biotic stresses remains elusive in rice. We previously isolated a rice short-chain peptide-encoding gene, Os2H16, and demonstrated that it plays important roles in both disease resistance and drought tolerance. Here, we conducted a promoter assay of Os2H16 and identified GT-1 as an important cis-element that mediates Os2H16 expression in response to pathogen attack and osmotic stress. Using the repeated GT-1 as bait, we characterized an abscisic acid, stress and ripening 2 (ASR2) protein from yeast-one hybridization screening. Sequence alignments showed that the carboxy-terminal domain of OsASR2 containing residues 80-138 was the DNA-binding domain. Furthermore, we identified that OsASR2 was specifically bound to GT-1 and activated the expression of the target gene Os2H16, as well as GFP driven by the chimeric promoter of 2 × GT-1-35S mini construct. Additionally, the expression of OsASR2 was elevated by pathogens and osmotic stress challenges. Overexpression of OsASR2 enhanced the resistance against Xanthomonas oryzae pv. oryzae and Rhizoctonia solani, and tolerance to drought in rice. These results suggest that the interaction between OsASR2 and GT-1 plays an important role in the crosstalk of the response of rice to biotic and abiotic stresses.
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Affiliation(s)
- Ning Li
- State Key Laboratory of Crop BiologyCollege of AgronomyShandong Agricultural UniversityTaianShandongChina
| | - Shutong Wei
- Shandong Provincial Key Laboratory for Biology of Vegetable Disease and Insect PestsCollege of Plant ProtectionShandong Agricultural UniversityTaianShandongChina
| | - Jing Chen
- Shandong Provincial Key Laboratory for Biology of Vegetable Disease and Insect PestsCollege of Plant ProtectionShandong Agricultural UniversityTaianShandongChina
| | - Fangfang Yang
- State Key Laboratory of Crop BiologyCollege of AgronomyShandong Agricultural UniversityTaianShandongChina
| | - Lingguang Kong
- Shandong Provincial Key Laboratory for Biology of Vegetable Disease and Insect PestsCollege of Plant ProtectionShandong Agricultural UniversityTaianShandongChina
| | - Cuixia Chen
- State Key Laboratory of Crop BiologyCollege of AgronomyShandong Agricultural UniversityTaianShandongChina
| | - Xinhua Ding
- State Key Laboratory of Crop BiologyCollege of AgronomyShandong Agricultural UniversityTaianShandongChina
- Shandong Provincial Key Laboratory for Biology of Vegetable Disease and Insect PestsCollege of Plant ProtectionShandong Agricultural UniversityTaianShandongChina
| | - Zhaohui Chu
- State Key Laboratory of Crop BiologyCollege of AgronomyShandong Agricultural UniversityTaianShandongChina
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Mishra A, Tanna B. Halophytes: Potential Resources for Salt Stress Tolerance Genes and Promoters. FRONTIERS IN PLANT SCIENCE 2017; 8:829. [PMID: 28572812 PMCID: PMC5435751 DOI: 10.3389/fpls.2017.00829] [Citation(s) in RCA: 105] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 05/02/2017] [Indexed: 05/17/2023]
Abstract
Halophytes have demonstrated their capability to thrive under extremely saline conditions and thus considered as one of the best germplasm for saline agriculture. Salinity is a worldwide problem, and the salt-affected areas are increasing day-by-day because of scanty rainfall, poor irrigation system, salt ingression, water contamination, and other environmental factors. The salinity stress tolerance mechanism is a very complex phenomenon, and some pathways are coordinately linked for imparting salinity tolerance. Though a number of salt responsive genes have been reported from the halophytes, there is always a quest for promising stress-responsive genes that can modulate plant physiology according to the salt stress. Halophytes such as Aeluropus, Mesembryanthemum, Suaeda, Atriplex, Thellungiella, Cakile, and Salicornia serve as a potential candidate for the salt-responsive genes and promoters. Several known genes like antiporters (NHX, SOS, HKT, VTPase), ion channels (Cl-, Ca2+, aquaporins), antioxidant encoding genes (APX, CAT, GST, BADH, SOD) and some novel genes such as USP, SDR1, SRP etc. were isolated from halophytes and explored for developing stress tolerance in the crop plants (glycophytes). It is evidenced that stress triggers salt sensors that lead to the activation of stress tolerance mechanisms which involve multiple signaling proteins, up- or down-regulation of several genes, and finally the distinctive or collective effects of stress-responsive genes. In this review, halophytes are discussed as an excellent platform for salt responsive genes which can be utilized for developing salinity tolerance in crop plants through genetic engineering.
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Affiliation(s)
- Avinash Mishra
- Marine Biotechnology and Ecology Division, Central Salt and Marine Chemicals Research Institute (CSIR)Bhavnagar, India
- Academy of Scientific and Innovative Research, Council of Scientific and Industrial ResearchNew Delhi, India
| | - Bhakti Tanna
- Marine Biotechnology and Ecology Division, Central Salt and Marine Chemicals Research Institute (CSIR)Bhavnagar, India
- Academy of Scientific and Innovative Research, Council of Scientific and Industrial ResearchNew Delhi, India
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Singh D, Yadav NS, Tiwari V, Agarwal PK, Jha B. A SNARE-Like Superfamily Protein SbSLSP from the Halophyte Salicornia brachiata Confers Salt and Drought Tolerance by Maintaining Membrane Stability, K(+)/Na(+) Ratio, and Antioxidant Machinery. FRONTIERS IN PLANT SCIENCE 2016; 7:737. [PMID: 27313584 PMCID: PMC4889606 DOI: 10.3389/fpls.2016.00737] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 05/13/2016] [Indexed: 05/06/2023]
Abstract
About 1000 salt-responsive ESTs were identified from an extreme halophyte Salicornia brachiata. Among these, a novel salt-inducible gene SbSLSP (Salicornia brachiata SNARE-like superfamily protein), showed up-regulation upon salinity and dehydration stress. The presence of cis-regulatory motifs related to abiotic stress in the putative promoter region supports our finding that SbSLSP gene is inducible by abiotic stress. The SbSLSP protein showed a high sequence identity to hypothetical/uncharacterized proteins from Beta vulgaris, Spinacia oleracea, Eucalyptus grandis, and Prunus persica and with SNARE-like superfamily proteins from Zostera marina and Arabidopsis thaliana. Bioinformatics analysis predicted a clathrin adaptor complex small-chain domain and N-myristoylation site in the SbSLSP protein. Subcellular localization studies indicated that the SbSLSP protein is mainly localized in the plasma membrane. Using transgenic tobacco lines, we establish that overexpression of SbSLSP resulted in elevated tolerance to salt and drought stress. The improved tolerance was confirmed by alterations in a range of physiological parameters, including high germination and survival rate, higher leaf chlorophyll contents, and reduced accumulation of Na(+) ion and reactive oxygen species (ROS). Furthermore, overexpressing lines also showed lower water loss, higher cell membrane stability, and increased accumulation of proline and ROS-scavenging enzymes. Overexpression of SbSLSP also enhanced the transcript levels of ROS-scavenging and signaling enzyme genes. This study is the first investigation of the function of the SbSLSP gene as a novel determinant of salinity/drought tolerance. The results suggest that SbSLSP could be a potential candidate to increase salinity and drought tolerance in crop plants for sustainable agriculture in semi-arid saline soil.
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Affiliation(s)
- Dinkar Singh
- Division of Marine Biotechnology and Ecology, CSIR-Central Salt and Marine Chemicals Research InstituteBhavnagar, India
| | - Narendra Singh Yadav
- Division of Marine Biotechnology and Ecology, CSIR-Central Salt and Marine Chemicals Research InstituteBhavnagar, India
| | - Vivekanand Tiwari
- Division of Marine Biotechnology and Ecology, CSIR-Central Salt and Marine Chemicals Research InstituteBhavnagar, India
| | - Pradeep K. Agarwal
- Division of Marine Biotechnology and Ecology, CSIR-Central Salt and Marine Chemicals Research InstituteBhavnagar, India
- Academy of Scientific and Innovative ResearchCSIR, New Delhi, India
| | - Bhavanath Jha
- Division of Marine Biotechnology and Ecology, CSIR-Central Salt and Marine Chemicals Research InstituteBhavnagar, India
- Academy of Scientific and Innovative ResearchCSIR, New Delhi, India
- *Correspondence: Bhavanath Jha
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Feng ZJ, Xu ZS, Sun J, Li LC, Chen M, Yang GX, He GY, Ma YZ. Investigation of the ASR family in foxtail millet and the role of ASR1 in drought/oxidative stress tolerance. PLANT CELL REPORTS 2016; 35:115-28. [PMID: 26441057 DOI: 10.1007/s00299-015-1873-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Revised: 09/15/2015] [Accepted: 09/21/2015] [Indexed: 05/06/2023]
Abstract
KEY MESSAGE Six foxtail millet ASR genes were regulated by various stress-related signals. Overexpression of ASR1 increased drought and oxidative tolerance by controlling ROS homeostasis and regulating oxidation-related genes in tobacco plants. Abscisic acid stress ripening (ASR) proteins with ABA/WDS domains constituted a class of plant-specific transcription factors, playing important roles in plant development, growth and abiotic stress responses. However, only a few ASRs genes have been characterized in crop plants and none was reported so far in foxtail millet (Setaria italic), an important drought-tolerant crop and model bioenergy grain crop. In the present study, we identified six foxtail millet ASR genes. Gene structure, protein alignments and phylogenetic relationships were analyzed. Transcript expression patterns of ASR genes revealed that ASRs might play important roles in stress-related signaling and abiotic stress responses in diverse tissues in foxtail millet. Subcellular localization assays showed that SiASR1 localized in the nucleus. Overexpression of SiASR1 in tobacco remarkably increased tolerance to drought and oxidative stresses, as determined through developmental and physiological analyses of germination rate, root growth, survival rate, relative water content, ion leakage, chlorophyll content and antioxidant enzyme activities. Furthermore, expression of SiASR1 modulated the transcript levels of oxidation-related genes, including NtSOD, NtAPX, NtCAT, NtRbohA and NtRbohB, under drought and oxidative stress conditions. These results provide a foundation for evolutionary and functional characterization of the ASR gene family in foxtail millet.
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Affiliation(s)
- Zhi-Juan Feng
- Institute of Crop Science, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, 100081, China.
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China.
| | - Zhao-Shi Xu
- Institute of Crop Science, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, 100081, China.
| | - Jiutong Sun
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China.
| | - Lian-Cheng Li
- Institute of Crop Science, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, 100081, China.
| | - Ming Chen
- Institute of Crop Science, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, 100081, China.
| | - Guang-Xiao Yang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China.
| | - Guang-Yuan He
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China.
| | - You-Zhi Ma
- Institute of Crop Science, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, 100081, China.
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Dong L, Wang Q, Manik SMN, Song Y, Shi S, Su Y, Liu G, Liu H. Nicotiana sylvestris calcineurin B-like protein NsylCBL10 enhances salt tolerance in transgenic Arabidopsis. PLANT CELL REPORTS 2015; 34:2053-63. [PMID: 26318216 DOI: 10.1007/s00299-015-1851-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Revised: 07/13/2015] [Accepted: 07/29/2015] [Indexed: 05/13/2023]
Abstract
KEY MESSAGE Nicotiana sylvestris calcineurin B-like protein NsylCBL10 improves tolerance to high-salt stress through better maintenance of Na (+) balance. The calcineurin B-like (CBL) proteins represent a unique group of plant calcium sensors and play an important role in regulating the response of a plant cell to the stress. Although many studies have been made in Arabidopsis (Arabidopsis thaliana), rice (Oryza sativa) and poplar (Populus trichocarpa), the characterization and elucidation of the functions of CBLs in tobacco have not yet been reported. In this study, NsylCBL10, a CBL gene showing higher similarities to other CBL10 genes, was cloned from Nicotiana sylvestris. NsylCBL10 is expressed in most of the tobacco tissues, and the protein targets to the plasma membrane specifically. Over-expression of NsylCBL10 enhanced the salt tolerance of Arabidopsis wild type plants greatly, and rescued the high-salt-sensitive phenotype of Arabidopsis cbl10 mutant. The analysis of ion content indicated that over-expressing NsylCBL10 in plants is able to maintain a lower Na(+)/K(+) ratio in roots and higher Na(+)/K(+) ratio in shoots, compared with cbl10 mutant. The results suggest that NsylCBL10 might play an important role in response to high salinity stress in N. sylvestris, by keeping a better ionic homeostasis to reduce the damage of toxic ion to the plant cell.
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Affiliation(s)
- Lianhong Dong
- Key Laboratory of Tobacco Biology and Processing, Tobacco Research Institute of CAAS, Ministry of Agriculture, Qingdao, 266101, China
- Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Qian Wang
- Key Laboratory of Tobacco Biology and Processing, Tobacco Research Institute of CAAS, Ministry of Agriculture, Qingdao, 266101, China
- Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - S M Nuruzzaman Manik
- Key Laboratory of Tobacco Biology and Processing, Tobacco Research Institute of CAAS, Ministry of Agriculture, Qingdao, 266101, China
- Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yufeng Song
- Key Laboratory of Tobacco Biology and Processing, Tobacco Research Institute of CAAS, Ministry of Agriculture, Qingdao, 266101, China
- Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Sujuan Shi
- College of Agriculture and Plant Protection, Qingdao Agricultural University, Qingdao, 266109, China
| | - Yulong Su
- Key Laboratory of Tobacco Biology and Processing, Tobacco Research Institute of CAAS, Ministry of Agriculture, Qingdao, 266101, China
- Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Guanshan Liu
- Key Laboratory of Tobacco Biology and Processing, Tobacco Research Institute of CAAS, Ministry of Agriculture, Qingdao, 266101, China.
- Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
| | - Haobao Liu
- Key Laboratory of Tobacco Biology and Processing, Tobacco Research Institute of CAAS, Ministry of Agriculture, Qingdao, 266101, China.
- Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
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Tiwari V, Chaturvedi AK, Mishra A, Jha B. Introgression of the SbASR-1 gene cloned from a halophyte Salicornia brachiate enhances salinity and drought endurance in transgenic groundnut (arachis hypogaea)and acts as a transcription factor [corrected]. PLoS One 2015; 10:e0131567. [PMID: 26158616 PMCID: PMC4497679 DOI: 10.1371/journal.pone.0131567] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Accepted: 06/03/2015] [Indexed: 11/25/2022] Open
Abstract
The SbASR-1 gene, cloned from a halophyte Salicornia brachiata, encodes a plant-specific hydrophilic and stress responsive protein. The genome of S. brachiata has two paralogs of the SbASR-1 gene (2549 bp), which is comprised of a single intron of 1611 bp, the largest intron of the abscisic acid stress ripening [ASR] gene family yet reported. In silico analysis of the 843-bp putative promoter revealed the presence of ABA, biotic stress, dehydration, phytohormone, salinity, and sugar responsive cis-regulatory motifs. The SbASR-1 protein belongs to Group 7 LEA protein family with different amino acid composition compared to their glycophytic homologs. Bipartite Nuclear Localization Signal (NLS) was found on the C-terminal end of protein and localization study confirmed that SbASR-1 is a nuclear protein. Furthermore, transgenic groundnut (Arachis hypogaea) plants over-expressing the SbASR-1 gene constitutively showed enhanced salinity and drought stress tolerance in the T1 generation. Leaves of transgenic lines exhibited higher chlorophyll and relative water contents and lower electrolyte leakage, malondialdehyde content, proline, sugars, and starch accumulation under stress treatments than wild-type (Wt) plants. Also, lower accumulation of H2O2 and O2.- radicals was detected in transgenic lines compared to Wt plants under stress conditions. Transcript expression of APX (ascorbate peroxidase) and CAT (catalase) genes were higher in Wt plants, whereas the SOD (superoxide dismutase) transcripts were higher in transgenic lines under stress. Electrophoretic mobility shift assay (EMSA) confirmed that the SbASR-1 protein binds at the consensus sequence (C/G/A)(G/T)CC(C/G)(C/G/A)(A/T). Based on results of the present study, it may be concluded that SbASR-1 enhances the salinity and drought stress tolerance in transgenic groundnut by functioning as a LEA (late embryogenesis abundant) protein and a transcription factor.
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Affiliation(s)
- Vivekanand Tiwari
- Marine Biotechnology and Ecology Division, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, Gujarat, India
| | - Amit Kumar Chaturvedi
- Marine Biotechnology and Ecology Division, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, Gujarat, India
| | - Avinash Mishra
- Marine Biotechnology and Ecology Division, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, Gujarat, India
| | - Bhavanath Jha
- Marine Biotechnology and Ecology Division, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, Gujarat, India
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