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Fan J, Zhang Y, Sun H, Duan R, Jiang Y, Wang X, Sun Y, Luo Z, Wang P, Guan S, Liu S, Fan X, Jiao P, Wang Y, Yang J, Zhang Z, Yu H. Overexpression of soybean GmDHN9 gene enhances drought resistance of transgenic Arabidopsis. GM CROPS & FOOD 2024; 15:118-129. [PMID: 38564429 PMCID: PMC10989702 DOI: 10.1080/21645698.2024.2327116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 03/02/2024] [Indexed: 04/04/2024]
Abstract
Soybean is one of the important oil crops and a major source of protein and lipids. Drought can cause severe soybean yields. Dehydrin protein (DHN) is a subfamily of LEA proteins that play an important role in plant responses to abiotic stresses. In this study, the soybean GmDHN9 gene was cloned and induced under a variety of abiotic stresses. Results showed that the GmDHN9 gene response was more pronounced under drought induction. Subcellular localization results indicated that the protein was localized in the cytoplasm. The role of transgenic Arabidopsis plants in drought stress response was further studied. Under drought stress, the germination rate, root length, chlorophyll, proline, relative water content, and antioxidant enzyme content of transgenic Arabidopsis thaliana transgenic genes were higher than those of wild-type plants, and transgenic plants contained less O2-, H2O2 and MDA contents. In short, the GmDHN9 gene can regulate the homeostasis of ROS and enhance the drought resistance of plants.
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Affiliation(s)
- Jiayi Fan
- College of Agronomy, Jilin Agricultural University, Changchun, China
| | - Yuzhe Zhang
- College of Life Sciences, Jilin Agricultural University, Changchun, China
| | - Hongji Sun
- College of Life Sciences, Jilin Agricultural University, Changchun, China
| | - Ruijie Duan
- College of Life Sciences, Jilin Agricultural University, Changchun, China
| | - Yushi Jiang
- College of Agronomy, Jilin Agricultural University, Changchun, China
| | - Xinyu Wang
- College of Agronomy, Jilin Agricultural University, Changchun, China
| | - Yao Sun
- College of Agronomy, Jilin Agricultural University, Changchun, China
| | - Zhipeng Luo
- College of Agronomy, Jilin Agricultural University, Changchun, China
| | - Peiwu Wang
- College of Agronomy, Jilin Agricultural University, Changchun, China
- Changchun Vocational and Technical College, Changchun Vocational Institute of Technology, changchun, China
| | - Shuyan Guan
- College of Agronomy, Jilin Agricultural University, Changchun, China
- Changchun Vocational and Technical College, Changchun Vocational Institute of Technology, changchun, China
| | - Siyan Liu
- College of Agronomy, Jilin Agricultural University, Changchun, China
- Changchun Vocational and Technical College, Changchun Vocational Institute of Technology, changchun, China
| | - Xuhong Fan
- Joint International Research Laboratory of Modern Agricultural Technology, Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Peng Jiao
- College of Agronomy, Jilin Agricultural University, Changchun, China
| | - Yunpeng Wang
- Soybean Research Institute, Jilin Academy of Agricultural Sciences, Changchun, China
| | - Jinhui Yang
- Daan Branch of Baicheng City Tobacco company of Jilin Province, Baicheng, China
| | - Zunyue Zhang
- College of Agronomy, Jilin Agricultural University, Changchun, China
| | - Huiwei Yu
- College of Agronomy, Jilin Agricultural University, Changchun, China
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Wang Q, Lei X, Wang Y, Di P, Meng X, Peng W, Rong J, Wang Y. Genome-wide identification of the LEA gene family in Panax ginseng: Evidence for the role of PgLEA2-50 in plant abiotic stress response. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 212:108742. [PMID: 38772166 DOI: 10.1016/j.plaphy.2024.108742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Revised: 04/21/2024] [Accepted: 05/16/2024] [Indexed: 05/23/2024]
Abstract
Ginseng frequently encounters environmental stress during its growth and development. Late Embryogenesis Abundant (LEA) proteins play a crucial role in combating adversity stress, particularly against abiotic challenges In this study, 107 LEA genes from ginseng, spanning eight subfamilies, were identified, demonstrating significant evolutionary conservation, with the LEA2 subfamily being most prominent. Gene duplication events, primarily segmental duplications, have played a major role in the expansion of the LEA gene family, which has undergone strong purifying selection. PgLEAs were unevenly distributed across 22 chromosomes, with each subfamily featuring unique structural domains and conserved motifs. PgLEAs were expressed in various tissues, exhibiting distinct variations in abundance and tissue specificity. Numerous regulatory cis-elements, related to abiotic stress and hormones, were identified in the promoter region. Additionally, PgLEAs were regulated by a diverse array of abiotic stress-related transcription factors. A total of 35 PgLEAs were differentially expressed following treatments with ABA, GA, and IAA. Twenty-three PgLEAs showed significant but varied responses to drought, extreme temperatures, and salinity stress. The transformation of tobacco with the key gene PgLEA2-50 enhanced osmoregulation and antioxidant levels in transgenic lines, improving their resistance to abiotic stress. This study offers insights into functional gene analysis, focusing on LEA proteins, and establishes a foundational framework for research on ginseng's resilience to abiotic stress.
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Affiliation(s)
- Qi Wang
- Jilin Agricultural University, Changchun, Jilin, China
| | - Xiujuan Lei
- Jilin Agricultural University, Changchun, Jilin, China
| | - Yihan Wang
- Jilin Agricultural University, Changchun, Jilin, China
| | - Peng Di
- Jilin Agricultural University, Changchun, Jilin, China
| | - Xiangru Meng
- Jilin Agricultural University, Changchun, Jilin, China
| | - Wenyue Peng
- Jilin Agricultural University, Changchun, Jilin, China
| | - Junbo Rong
- Jilin Agricultural University, Changchun, Jilin, China
| | - Yingping Wang
- Jilin Agricultural University, Changchun, Jilin, China.
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3
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Wang W, Liu Y, Kang Y, Liu W, Li S, Wang Z, Xia X, Chen X, Qian L, Xiong X, Liu Z, Guan C, He X. Genome-wide characterization of LEA gene family reveals a positive role of BnaA.LEA6.a in freezing tolerance in rapeseed (Brassica napus L.). BMC PLANT BIOLOGY 2024; 24:433. [PMID: 38773359 PMCID: PMC11106994 DOI: 10.1186/s12870-024-05111-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Accepted: 05/06/2024] [Indexed: 05/23/2024]
Abstract
BACKGROUND Freezing stress is one of the major abiotic stresses that causes extensive damage to plants. LEA (Late embryogenesis abundant) proteins play a crucial role in plant growth, development, and abiotic stress. However, there is limited research on the function of LEA genes in low-temperature stress in Brassica napus (rapeseed). RESULTS Total 306 potential LEA genes were identified in B. rapa (79), B. oleracea (79) and B. napus (148) and divided into eight subgroups. LEA genes of the same subgroup had similar gene structures and predicted subcellular locations. Cis-regulatory elements analysis showed that the promoters of BnaLEA genes rich in cis-regulatory elements related to various abiotic stresses. Additionally, RNA-seq and real-time PCR results indicated that the majority of BnaLEA family members were highly expressed in senescent tissues of rapeseed, especially during late stages of seed maturation, and most BnaLEA genes can be induced by salt and osmotic stress. Interestingly, the BnaA.LEA6.a and BnaC.LEA6.a genes were highly expressed across different vegetative and reproductive organs during different development stages, and showed strong responses to salt, osmotic, and cold stress, particularly freezing stress. Further analysis showed that overexpression of BnaA.LEA6.a increased the freezing tolerance in rapeseed, as evidenced by lower relative electrical leakage and higher survival rates compared to the wild-type (WT) under freezing treatment. CONCLUSION This study is of great significance for understanding the functions of BnaLEA genes in freezing tolerance in rapeseed and offers an ideal candidate gene (BnaA.LEA6.a) for molecular breeding of freezing-tolerant rapeseed cultivars.
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Affiliation(s)
- Weiping Wang
- College of Agronomy, Hunan Agricultural University, Changsha, 410128, Hunan, China
| | - Yan Liu
- College of Agronomy, Hunan Agricultural University, Changsha, 410128, Hunan, China
| | - Yu Kang
- College of Agronomy, Hunan Agricultural University, Changsha, 410128, Hunan, China
| | - Wei Liu
- College of Agronomy, Hunan Agricultural University, Changsha, 410128, Hunan, China
| | - Shun Li
- College of Agronomy, Hunan Agricultural University, Changsha, 410128, Hunan, China
| | - Zhonghua Wang
- College of Agronomy, Hunan Agricultural University, Changsha, 410128, Hunan, China
| | - Xiaoyan Xia
- College of Agronomy, Hunan Agricultural University, Changsha, 410128, Hunan, China
| | - Xiaoyu Chen
- College of Agronomy, Hunan Agricultural University, Changsha, 410128, Hunan, China
| | - Lunwen Qian
- College of Agronomy, Hunan Agricultural University, Changsha, 410128, Hunan, China
| | - Xinghua Xiong
- College of Agronomy, Hunan Agricultural University, Changsha, 410128, Hunan, China
| | - Zhongsong Liu
- College of Agronomy, Hunan Agricultural University, Changsha, 410128, Hunan, China
| | - Chunyun Guan
- College of Agronomy, Hunan Agricultural University, Changsha, 410128, Hunan, China
| | - Xin He
- College of Agronomy, Hunan Agricultural University, Changsha, 410128, Hunan, China.
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Jung WJ, Yoon JS, Seo YW. TaMAPK3 phosphorylates TaCBF and TaICE and plays a negative role in wheat freezing tolerance. JOURNAL OF PLANT PHYSIOLOGY 2024; 296:154233. [PMID: 38554674 DOI: 10.1016/j.jplph.2024.154233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 02/27/2024] [Accepted: 03/15/2024] [Indexed: 04/02/2024]
Abstract
Freezing temperature during overwintering often kills plants; plants have thus, developed a defense mechanism called 'cold acclimation', in which a number of genes are involved in increasing cell protection and gene expression. Mitogen-activated protein kinase (MAPK) controls proteins' activities by phosphorylation and is involved in numerous metabolic pathways. In this study, we identified the protein interaction between TaMAPK3 and the proteins in the cold response pathway, ICE41, ICE87, and CBFIVd-D9. The subcellular localization and bimolecular fluorescence complement (BiFC) assays revealed that these proteins interact in the nucleus or in the plasma membrane. Furthermore, MAPK3-mediated phosphorylation of ICE41, ICE87, and CBFIVd-D9 was verified using an in vitro phosphorylation assay. TaMAPK3-overexpressing transgenic Brachypodium showed a lower survival rate upon freezing stress and lower proline content during cold acclimation, compared to wild-type plants. Furthermore, cold response gene expression analysis revealed that the expression of these genes was suppressed in the transgenic lines under cold treatment. It was further elucidated that MAPK3 mediates the degradation of ICE and CBF proteins, which implies the negative impact of MAPK3 on the freezing tolerance of plants. This study will help to elucidate the molecular mechanisms of cold tolerance and the activity of MAPK3 in wheat.
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Affiliation(s)
- Woo Joo Jung
- Institute of Animal Molecular Biotechnology, Korea University, Seoul, 02841, South Korea
| | - Jin Seok Yoon
- Ojeong Plant Breeding Research Center, Korea University, Seoul, 02841, South Korea
| | - Yong Weon Seo
- Ojeong Plant Breeding Research Center, Korea University, Seoul, 02841, South Korea; Department of Plant Biotechnology, Korea University, Seoul, 02841, South Korea.
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Wang D, Ni Y, Xie K, Li Y, Wu W, Shan H, Cheng B, Li X. Aquaporin ZmTIP2;3 Promotes Drought Resistance of Maize through Symbiosis with Arbuscular Mycorrhizal Fungi. Int J Mol Sci 2024; 25:4205. [PMID: 38673792 PMCID: PMC11050007 DOI: 10.3390/ijms25084205] [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: 03/02/2024] [Revised: 04/02/2024] [Accepted: 04/05/2024] [Indexed: 04/28/2024] Open
Abstract
Arbuscular mycorrhizal fungi symbiosis plays important roles in enhancing plant tolerance to biotic and abiotic stresses. Aquaporins have also been linked to improved drought tolerance in plants and the regulation of water transport. However, the mechanisms that underlie this association remain to be further explored. In this study, we found that arbuscular mycorrhiza fungi symbiosis could induce the gene expression of the aquaporin ZmTIP2;3 in maize roots. Moreover, compared with the wild-type plants, the maize zmtip2;3 mutant also showed a lower total biomass, colonization rate, relative water content, and POD and SOD activities after arbuscular mycorrhiza fungi symbiosis under drought stress. qRT-PCR assays revealed reduced expression levels of stress genes including LEA3, P5CS4, and NECD1 in the maize zmtip2;3 mutant. Taken together, these data suggest that ZmTIP2;3 plays an important role in promoting maize tolerance to drought stress during arbuscular mycorrhiza fungi symbiosis.
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Affiliation(s)
| | | | | | | | | | | | - Beijiu Cheng
- Key Laboratory of Crop Stress Resistance and High Quality Biology of Anhui Province, Anhui Agricultural University, Hefei 230036, China; (D.W.); (Y.N.); (K.X.); (Y.L.); (W.W.); (H.S.)
| | - Xiaoyu Li
- Key Laboratory of Crop Stress Resistance and High Quality Biology of Anhui Province, Anhui Agricultural University, Hefei 230036, China; (D.W.); (Y.N.); (K.X.); (Y.L.); (W.W.); (H.S.)
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6
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Park M, Shin SY, Moon H, Choi W, Shin C. Analysis of the global transcriptome and miRNAome associated with seed dormancy during seed maturation in rice (Oryza sativa L. cv. Nipponbare). BMC PLANT BIOLOGY 2024; 24:215. [PMID: 38532331 DOI: 10.1186/s12870-024-04928-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 03/19/2024] [Indexed: 03/28/2024]
Abstract
BACKGROUND Seed dormancy is a biological mechanism that prevents germination until favorable conditions for the subsequent generation of plants are encountered. Therefore, this mechanism must be effectively established during seed maturation. Studies investigating the transcriptome and miRNAome of rice embryos and endosperms at various maturation stages to evaluate seed dormancy are limited. This study aimed to compare the transcriptome and miRNAome of rice seeds during seed maturation. RESULTS Oryza sativa L. cv. Nipponbare seeds were sampled for embryos and endosperms at three maturation stages: 30, 45, and 60 days after heading (DAH). The pre-harvest sprouting (PHS) assay was conducted to assess the level of dormancy in the seeds at each maturation stage. At 60 DAH, the PHS rate was significantly increased compared to those at 30 and 45 DAH, indicating that the dormancy is broken during the later maturation stage (45 DAH to 60 DAH). However, the largest number of differentially expressed genes (DEGs) and differentially expressed miRNAs (DEmiRs) were identified between 30 and 60 DAH in the embryo and endosperm, implying that the gradual changes in genes and miRNAs from 30 to 60 DAH may play a significant role in breaking seed dormancy. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses confirmed that DEGs related to plant hormones were most abundant in the embryo during 45 DAH to 60 DAH and 30 DAH to 60 DAH transitions. Alternatively, most of the DEGs in the endosperm were related to energy and abiotic stress. MapMan analysis and quantitative real-time polymerase chain reaction identified four newly profiled auxin-related genes (OsSAUR6/12/23/25) and one ethylene-related gene (OsERF087), which may be involved in seed dormancy during maturation. Additionally, miRNA target prediction (psRNATarget) and degradome dataset (TarDB) indicated a potential association between osa-miR531b and ethylene biosynthesis gene (OsACO4), along with osa-miR390-5p and the abscisic acid (ABA) exporter-related gene (OsMATE19) as factors involved in seed dormancy. CONCLUSIONS Analysis of the transcriptome and miRNAome of rice embryos and endosperms during seed maturation provided new insights into seed dormancy, particularly its relationship with plant hormones such as ABA, auxin, and ethylene.
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Affiliation(s)
- Minsu Park
- Department of Agricultural Biotechnology, Seoul National University, Seoul, 08826, Republic of Korea
- Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Sang-Yoon Shin
- Plant Genomics and Breeding Institute, Seoul National University, Seoul, 08826, Republic of Korea
- Research Center for Plant Plasticity, Seoul National University, Seoul, 08826, Republic of Korea
| | - Hongman Moon
- Department of Agricultural Biotechnology, Seoul National University, Seoul, 08826, Republic of Korea
| | - Woochang Choi
- Department of Agricultural Biotechnology, Seoul National University, Seoul, 08826, Republic of Korea
| | - Chanseok Shin
- Department of Agricultural Biotechnology, Seoul National University, Seoul, 08826, Republic of Korea.
- Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 08826, Republic of Korea.
- Plant Genomics and Breeding Institute, Seoul National University, Seoul, 08826, Republic of Korea.
- Research Center for Plant Plasticity, Seoul National University, Seoul, 08826, Republic of Korea.
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Guo N, Tang S, Wang Y, Chen W, An R, Ren Z, Hu S, Tang S, Wei X, Shao G, Jiao G, Xie L, Wang L, Chen Y, Zhao F, Sheng Z, Hu P. A mediator of OsbZIP46 deactivation and degradation negatively regulates seed dormancy in rice. Nat Commun 2024; 15:1134. [PMID: 38326370 PMCID: PMC10850359 DOI: 10.1038/s41467-024-45402-z] [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: 11/27/2022] [Accepted: 01/22/2024] [Indexed: 02/09/2024] Open
Abstract
Preharvest sprouting (PHS) is a deleterious phenotype that occurs frequently in rice-growing regions where the temperature and precipitation are high. It negatively affects yield, quality, and downstream grain processing. Seed dormancy is a trait related to PHS. Longer seed dormancy is preferred for rice production as it can prevent PHS. Here, we map QTLs associated with rice seed dormancy and clone Seed Dormancy 3.1 (SDR3.1) underlying one major QTL. SDR3.1 encodes a mediator of OsbZIP46 deactivation and degradation (MODD). We show that SDR3.1 negatively regulates seed dormancy by inhibiting the transcriptional activity of ABIs. In addition, we reveal two critical amino acids of SDR3.1 that are critical for the differences in seed dormancy between the Xian/indica and Geng/japonica cultivars. Further, SDR3.1 has been artificially selected during rice domestication. We propose a two-line model for the process of rice seed dormancy domestication from wild rice to modern cultivars. We believe the candidate gene and germplasm studied in this study would be beneficial for the genetic improvement of rice seed dormancy.
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Affiliation(s)
- Naihui Guo
- State Key Laboratory of Rice Biological Breeding/Key Laboratory of Rice Biology and Breeding, Ministry of Agriculture/China National Rice Improvement Centre/China National Rice Research Institute, Hangzhou, 310006, P. R. China
- Rice Research Institute, Shenyang Agricultural University, Shenyang, 110866, P. R. China
| | - Shengjia Tang
- State Key Laboratory of Rice Biological Breeding/Key Laboratory of Rice Biology and Breeding, Ministry of Agriculture/China National Rice Improvement Centre/China National Rice Research Institute, Hangzhou, 310006, P. R. China
| | - Yakun Wang
- State Key Laboratory of Rice Biological Breeding/Key Laboratory of Rice Biology and Breeding, Ministry of Agriculture/China National Rice Improvement Centre/China National Rice Research Institute, Hangzhou, 310006, P. R. China
- National Nanfan Research Academy (Sanya), Chinese Academy of Agricultural Sciences, Sanya, 572024, P. R. China
| | - Wei Chen
- State Key Laboratory of Rice Biological Breeding/Key Laboratory of Rice Biology and Breeding, Ministry of Agriculture/China National Rice Improvement Centre/China National Rice Research Institute, Hangzhou, 310006, P. R. China
| | - Ruihu An
- State Key Laboratory of Rice Biological Breeding/Key Laboratory of Rice Biology and Breeding, Ministry of Agriculture/China National Rice Improvement Centre/China National Rice Research Institute, Hangzhou, 310006, P. R. China
| | - Zongliang Ren
- State Key Laboratory of Rice Biological Breeding/Key Laboratory of Rice Biology and Breeding, Ministry of Agriculture/China National Rice Improvement Centre/China National Rice Research Institute, Hangzhou, 310006, P. R. China
| | - Shikai Hu
- State Key Laboratory of Rice Biological Breeding/Key Laboratory of Rice Biology and Breeding, Ministry of Agriculture/China National Rice Improvement Centre/China National Rice Research Institute, Hangzhou, 310006, P. R. China
| | - Shaoqing Tang
- State Key Laboratory of Rice Biological Breeding/Key Laboratory of Rice Biology and Breeding, Ministry of Agriculture/China National Rice Improvement Centre/China National Rice Research Institute, Hangzhou, 310006, P. R. China
| | - Xiangjin Wei
- State Key Laboratory of Rice Biological Breeding/Key Laboratory of Rice Biology and Breeding, Ministry of Agriculture/China National Rice Improvement Centre/China National Rice Research Institute, Hangzhou, 310006, P. R. China
| | - Gaoneng Shao
- State Key Laboratory of Rice Biological Breeding/Key Laboratory of Rice Biology and Breeding, Ministry of Agriculture/China National Rice Improvement Centre/China National Rice Research Institute, Hangzhou, 310006, P. R. China
| | - Guiai Jiao
- State Key Laboratory of Rice Biological Breeding/Key Laboratory of Rice Biology and Breeding, Ministry of Agriculture/China National Rice Improvement Centre/China National Rice Research Institute, Hangzhou, 310006, P. R. China
| | - Lihong Xie
- State Key Laboratory of Rice Biological Breeding/Key Laboratory of Rice Biology and Breeding, Ministry of Agriculture/China National Rice Improvement Centre/China National Rice Research Institute, Hangzhou, 310006, P. R. China
| | - Ling Wang
- State Key Laboratory of Rice Biological Breeding/Key Laboratory of Rice Biology and Breeding, Ministry of Agriculture/China National Rice Improvement Centre/China National Rice Research Institute, Hangzhou, 310006, P. R. China
| | - Ying Chen
- State Key Laboratory of Rice Biological Breeding/Key Laboratory of Rice Biology and Breeding, Ministry of Agriculture/China National Rice Improvement Centre/China National Rice Research Institute, Hangzhou, 310006, P. R. China
| | - Fengli Zhao
- State Key Laboratory of Rice Biological Breeding/Key Laboratory of Rice Biology and Breeding, Ministry of Agriculture/China National Rice Improvement Centre/China National Rice Research Institute, Hangzhou, 310006, P. R. China
| | - Zhonghua Sheng
- State Key Laboratory of Rice Biological Breeding/Key Laboratory of Rice Biology and Breeding, Ministry of Agriculture/China National Rice Improvement Centre/China National Rice Research Institute, Hangzhou, 310006, P. R. China.
- Jiangxi Early-season Rice Research Center, Pingxiang, Jiangxi Province, 337000, P. R. China.
| | - Peisong Hu
- State Key Laboratory of Rice Biological Breeding/Key Laboratory of Rice Biology and Breeding, Ministry of Agriculture/China National Rice Improvement Centre/China National Rice Research Institute, Hangzhou, 310006, P. R. China.
- Rice Research Institute, Shenyang Agricultural University, Shenyang, 110866, P. R. China.
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Zhang Y, Yu S, Niu P, Su L, Jiao X, Sui X, Shi Y, Liu B, Lu W, Zhu H, Jiang X. RcMYB8 enhances salt and drought tolerance in rose (Rosa chinensis) by modulating RcPR5/1 and RcP5CS1. MOLECULAR HORTICULTURE 2024; 4:3. [PMID: 38282004 PMCID: PMC10823735 DOI: 10.1186/s43897-024-00080-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Accepted: 01/01/2024] [Indexed: 01/30/2024]
Abstract
Plant Myeloblastosis (MYB) proteins function crucially roles upon variegated abiotic stresses. Nonetheless, their effects and mechanisms in rose (Rosa chinensis) are not fully clarified. In this study, we characterized the effects of rose RcMYB8 under salt and drought tolerances. For induction of the RcMYB8 expression, NaCl and drought stress treatment were adopted. Rose plants overexpressing RcMYB8 displayed enhanced tolerance to salinity and drought stress, while silencing RcMYB8 resulted in decreased tolerance, as evidenced by lowered intra-leaf electrolyte leakage and callose deposition, as well as photosynthetic sustainment under stressed conditions. Here, we further show that RcMYB8 binds similarly to the promoters of RcPR5/1 and RcP5C51 in vivo and in vitro. Inhibiting RcP5CS1 by virus-induced gene silencing led to decreased drought tolerance through the reactive oxygen species (ROS) homeostatic regulation. RcP5CS1-silenced plants showed an increase in ion leakage and reduce of proline content, together with the content of malondialdehyde (MDA) increased, lowered activities of Catalase (CAT), peroxidase (POD) and superoxide dismutase (SOD). Our study highlights the transcriptional modulator role of RcMYB8 in drought and salinity tolerances, which bridges RcPR5/1 and RcP5CS1 by promoting ROS scavenging. Besides, it is probably applicable to the rose plant engineering for enhancing their abiotic stress tolerances.
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Affiliation(s)
- Yichang Zhang
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266109, Shandong, China
| | - Shuang Yu
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266109, Shandong, China
| | - Pengfei Niu
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266109, Shandong, China
| | - Lin Su
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266109, Shandong, China
| | - Xuecheng Jiao
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266109, Shandong, China
| | - Xiuyu Sui
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266109, Shandong, China
| | - Yaru Shi
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266109, Shandong, China
| | - Boda Liu
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266109, Shandong, China
| | - Wanpei Lu
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266109, Shandong, China
| | - Hong Zhu
- College of Agronomy, Qingdao Agricultural University, Qingdao, 266109, Shandong, China.
| | - Xinqiang Jiang
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266109, Shandong, China.
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Deng H, Cao S, Zhang G, Xiao Y, Liu X, Wang F, Tang W, Lu X. OsVPE2, a Member of Vacuolar Processing Enzyme Family, Decreases Chilling Tolerance of Rice. RICE (NEW YORK, N.Y.) 2024; 17:5. [PMID: 38194166 PMCID: PMC10776553 DOI: 10.1186/s12284-023-00682-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 12/29/2023] [Indexed: 01/10/2024]
Abstract
Chilling is a major abiotic stress affecting rice growth, development and geographical distribution. Plant vacuolar processing enzymes (VPEs) contribute to the seed storage protein processing and mediate the programmed cell death by abiotic and biotic stresses. However, little is known about the roles of plant VPEs in cold stress responses and tolerance regulation. Here, we found that OsVPE2 was a chilling-responsive gene. The early-indica rice variety Xiangzaoxian31 overexpressing OsVPE2 was more sensitive to chilling stress, whereas the OsVPE2-knockout mutants generated by the CRISPR-Cas9 technology exhibited significantly enhanced chilling tolerance at the seedling stage without causing yield loss. Deficiency of OsVPE2 reduces relative electrolyte leakage, accumulation of toxic compounds such as reactive oxygen species and malondialdehyde, and promotes antioxidant enzyme activities under chilling stress conditions. It was indicated that OsVPE2 mediated the disintegration of vacuoles under chilling stress, accompanied by the entry of swollen mitochondria into vacuoles. OsVPE2 suppressed the expression of genes that have a positive regulatory role in antioxidant process. Moreover, haplotype analysis suggested that the natural variation in the OsVPE2 non-coding region may endow OsVPE2 with different expression levels, thereby probably conferring differences in cold tolerance between japonica and indica sub-population. Our results thus reveal a new biological function of the VPE family in regulating cold resistance, and suggest that the gene editing or natural variations of OsVPE2 can be used to create cold tolerant rice varieties with stable yield.
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Affiliation(s)
- Huabing Deng
- College of Agronomy, Hunan Agricultural University, Changsha, 410128, China
- Yuelushan Laboratory, Changsha, 410128, China
| | - Sai Cao
- College of Agronomy, Hunan Agricultural University, Changsha, 410128, China
- Yuelushan Laboratory, Changsha, 410128, China
| | - Guilian Zhang
- College of Agronomy, Hunan Agricultural University, Changsha, 410128, China
- Yuelushan Laboratory, Changsha, 410128, China
| | - Yunhua Xiao
- College of Agronomy, Hunan Agricultural University, Changsha, 410128, China
- Yuelushan Laboratory, Changsha, 410128, China
| | - Xiong Liu
- College of Agronomy, Hunan Agricultural University, Changsha, 410128, China
- Yuelushan Laboratory, Changsha, 410128, China
| | - Feng Wang
- College of Agronomy, Hunan Agricultural University, Changsha, 410128, China
- Yuelushan Laboratory, Changsha, 410128, China
| | - Wenbang Tang
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Hunan Academy of Agricultural Sciences, Changsha, 410125, China.
- Yuelushan Laboratory, Changsha, 410128, China.
| | - Xuedan Lu
- College of Agronomy, Hunan Agricultural University, Changsha, 410128, China.
- Yuelushan Laboratory, Changsha, 410128, China.
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Pooam M, El-Ballat EM, Jourdan N, Ali HM, Hano C, Ahmad M, El-Esawi MA. SNAC3 Transcription Factor Enhances Arsenic Stress Tolerance and Grain Yield in Rice ( Oryza sativa L.) through Regulating Physio-Biochemical Mechanisms, Stress-Responsive Genes, and Cryptochrome 1b. PLANTS (BASEL, SWITZERLAND) 2023; 12:2731. [PMID: 37514345 PMCID: PMC10383536 DOI: 10.3390/plants12142731] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 06/20/2023] [Accepted: 06/28/2023] [Indexed: 07/30/2023]
Abstract
Arsenic (As) is one of the toxic heavy metal pollutants found in the environment. An excess of As poses serious threats to plants and diminishes their growth and productivity. NAC transcription factors revealed a pivotal role in enhancing crops tolerance to different environmental stresses. The present study investigated, for the first time, the functional role of SNAC3 in boosting As stress tolerance and grain productivity in rice (Oryza sativa L.). Two SNAC3-overexpressing (SNAC3-OX) and two SNAC3-RNAi transgenic lines were created and validated. The wild-type and transgenic rice plants were exposed to different As stress levels (0, 25, and 50 µM). The results revealed that SNAC3 overexpression significantly improved rice tolerance to As stress and boosted grain yield traits. Under both levels of As stress (25 and 50 µM), SNAC3-OX rice lines exhibited significantly lower levels of oxidative stress biomarkers and OsCRY1b (cryptochrome 1b) expression, but they revealed increased levels of gas exchange characters, chlorophyll, osmolytes (soluble sugars, proteins, proline, phenols, and flavonoids), antioxidant enzymes (SOD, CAT, APX, and POD), and stress-tolerant genes expression (OsSOD-Cu/Zn, OsCATA, OsCATB, OsAPX2, OsLEA3, OsDREB2B, OsDREB2A, OsSNAC2, and OsSNAC1) in comparison to wild-type plants. By contrast, SNAC3 suppression (RNAi) reduced grain yield components and reversed the aforementioned measured physio-biochemical and molecular traits. Taken together, this study is the first to demonstrate that SNAC3 plays a vital role in boosting As stress resistance and grain productivity in rice through modulating antioxidants, photosynthesis, osmolyte accumulation, and stress-related genes expression, and may be a useful candidate for further genetic enhancement of stress resistance in many crops.
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Affiliation(s)
- Marootpong Pooam
- UMR CNRS 8256 (B2A), IBPS, Sorbonne Université, 75005 Paris, France
| | - Enas M El-Ballat
- Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
| | - Nathalie Jourdan
- UMR CNRS 8256 (B2A), IBPS, Sorbonne Université, 75005 Paris, France
| | - Hayssam M Ali
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Christophe Hano
- Laboratoire de Biologie des Ligneux et des Grandes Cultures, INRAE USC1328, Campus Eure et Loir, Orleans University, 45067 Orleans, France
| | - Margaret Ahmad
- UMR CNRS 8256 (B2A), IBPS, Sorbonne Université, 75005 Paris, France
| | - Mohamed A El-Esawi
- UMR CNRS 8256 (B2A), IBPS, Sorbonne Université, 75005 Paris, France
- Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
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11
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Liu J, Liu J, Deng L, Liu H, Liu H, Zhao W, Zhao Y, Sun X, Fan S, Wang H, Hua W. An intrinsically disordered region-containing protein mitigates the drought-growth trade-off to boost yields. PLANT PHYSIOLOGY 2023; 192:274-292. [PMID: 36746783 PMCID: PMC10152686 DOI: 10.1093/plphys/kiad074] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 12/16/2022] [Accepted: 01/16/2023] [Indexed: 05/03/2023]
Abstract
Drought stress poses a serious threat to global agricultural productivity and food security. Plant resistance to drought is typically accompanied by a growth deficit and yield penalty. Herein, we report a previously uncharacterized, dicotyledon-specific gene, Stress and Growth Interconnector (SGI), that promotes growth during drought in the oil crop rapeseed (Brassica napus) and the model plant Arabidopsis (Arabidopsis thaliana). Overexpression of SGI conferred enhanced biomass and yield under water-deficient conditions, whereas corresponding CRISPR SGI mutants exhibited the opposite effects. These attributes were achieved by mediating reactive oxygen species (ROS) homeostasis while maintaining photosynthetic efficiency to increase plant fitness under water-limiting environments. Further spatial-temporal transcriptome profiling revealed dynamic reprogramming of pathways for photosynthesis and stress responses during drought and the subsequent recovery. Mechanistically, SGI represents an intrinsically disordered region-containing protein that interacts with itself, catalase isoforms, dehydrins, and other drought-responsive positive factors, restraining ROS generation. These multifaceted interactions stabilize catalases in response to drought and facilitate their ROS-scavenging activities. Taken altogether, these findings provide insights into currently underexplored mechanisms to circumvent trade-offs between plant growth and stress tolerance that will inform strategies to breed climate-resilient, higher yielding crops for sustainable agriculture.
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Affiliation(s)
- Jun Liu
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China
| | - Jing Liu
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China
- Hubei Hongshan Laboratory, Wuhan 430070, China
| | - Linbin Deng
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China
| | - Hongmei Liu
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China
| | - Hongfang Liu
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China
| | - Wei Zhao
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China
| | - Yuwei Zhao
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China
| | - Xingchao Sun
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China
| | - Shihang Fan
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China
| | - Hanzhong Wang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China
| | - Wei Hua
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China
- Hubei Hongshan Laboratory, Wuhan 430070, China
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12
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Jia JS, Ge N, Wang QY, Zhao LT, Chen C, Chen JW. Genome-wide identification and characterization of members of the LEA gene family in Panax notoginseng and their transcriptional responses to dehydration of recalcitrant seeds. BMC Genomics 2023; 24:126. [PMID: 36932328 PMCID: PMC10024439 DOI: 10.1186/s12864-023-09229-0] [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: 10/21/2022] [Accepted: 03/06/2023] [Indexed: 03/19/2023] Open
Abstract
BACKGROUND Late embryogenesis abundant (LEA) proteins play an important role in dehydration process of seed maturation. The seeds of Panax notoginseng (Burkill) F. H. Chen are typically characterized with the recalcitrance and are highly sensitive to dehydration. However, it is not very well known about the role of LEA proteins in response to dehydration stress in P. notoginseng seeds. We will perform a genome-wide analysis of the LEA gene family and their transcriptional responses to dehydration stress in recalcitrant P. notoginseng seeds. RESULTS In this study, 61 LEA genes were identified from the P. notoginseng genome, and they were renamed as PnoLEA. The PnoLEA genes were classified into seven subfamilies based on the phylogenetic relationships, gene structure and conserved domains. The PnoLEA genes family showed relatively few introns and was highly conserved. Unexpectedly, the LEA_6 subfamily was not found, and the LEA_2 subfamily contained 46 (75.4%) members. Within 19 pairs of fragment duplication events, among them 17 pairs were LEA_2 subfamily. In addition, the expression of the PnoLEA genes was obviously induced under dehydration stress, but the germination rate of P. notoginseng seeds decreased as the dehydration time prolonged. CONCLUSIONS We found that the lack of the LEA_6 subfamily, the expansion of the LEA_2 subfamily and low transcriptional levels of most PnoLEA genes might be implicated in the recalcitrant formation of P. notoginseng seeds. LEA proteins are essential in the response to dehydration stress in recalcitrant seeds, but the protective effect of LEA protein is not efficient. These results could improve our understanding of the function of LEA proteins in the response of dehydration stress and their contributions to the formation of seed recalcitrance.
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Affiliation(s)
- Jin-Shan Jia
- College of Agronomy & Biotechnology, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
- The Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
- National & Local Joint Engineering Research Center On Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Fengyuan Road, Panlong District, Kunming, 650201, Yunnan, China
| | - Na Ge
- College of Agronomy & Biotechnology, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
- The Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
- National & Local Joint Engineering Research Center On Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Fengyuan Road, Panlong District, Kunming, 650201, Yunnan, China
| | - Qing-Yan Wang
- College of Agronomy & Biotechnology, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
- The Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
- National & Local Joint Engineering Research Center On Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Fengyuan Road, Panlong District, Kunming, 650201, Yunnan, China
| | - Li-Ting Zhao
- College of Agronomy & Biotechnology, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
- The Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
- National & Local Joint Engineering Research Center On Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Fengyuan Road, Panlong District, Kunming, 650201, Yunnan, China
| | - Cui Chen
- College of Agronomy & Biotechnology, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
- The Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
- National & Local Joint Engineering Research Center On Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Fengyuan Road, Panlong District, Kunming, 650201, Yunnan, China
| | - Jun-Wen Chen
- College of Agronomy & Biotechnology, Yunnan Agricultural University, Kunming, 650201, Yunnan, China.
- The Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, 650201, Yunnan, China.
- National & Local Joint Engineering Research Center On Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Fengyuan Road, Panlong District, Kunming, 650201, Yunnan, China.
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13
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Yang X, Niu X, Li L, Wang L, Liu C, Liu J, Yuan Q, Pei X. Understanding the molecular mechanism of drought resistance in Shanlan upland rice by transcriptome and phenotype analyses. Int J Biol Macromol 2023; 231:123387. [PMID: 36693603 DOI: 10.1016/j.ijbiomac.2023.123387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 01/13/2023] [Accepted: 01/18/2023] [Indexed: 01/22/2023]
Abstract
Rice (Oryza sativa L.) is an important grain crop worldwide, and drought has become an important factor restricting rice yield. As a unique rice germplasm in Hainan (China), Shanlan upland rice has rich genetic diversity and certain advantage for breeding water-saving and drought-resistance rice. 48 varieties, including 41 Shanlan upland rice, 3 upland rice, and 4 irrigated rice varieties was cultivated in soil pots. The drought resistance was assessed at the seedling stage using the stress coefficients of seven indicators, as the D value calculating from five principal components to rank the varieties. Five cultivars with strong, medium, and low resistance, were selected for transcriptome sequencing. The results of the GSEA analysis showed that free amino acid content increased through the redistribution of energy in Shanlan upland rice to cope with drought stress. In addition, we found that Os03g0623100 was significantly up-regulated under drought stress conditions in varieties with high drought resistance, as compared with low resistance cultivars. The Os03g0623100 was predicted to interact with LEA protein in the STRING database, which may contribute to maintaining the energy metabolisms to under stress conditions. This study provides a view of Shanlan upland rice as a drought-resistant germplasm resource, and a deeper understanding of the molecular mechanism of crop drought resistance.
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Affiliation(s)
- Xinsen Yang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China; Hainan Key Laboratory for Sustainable Utilization of Tropical Bio-resources, College of Tropical Crops, Hainan University, Haikou 570228, China
| | - Xiaoling Niu
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bio-resources, College of Tropical Crops, Hainan University, Haikou 570228, China
| | - Laiyi Li
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bio-resources, College of Tropical Crops, Hainan University, Haikou 570228, China
| | - Liu Wang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Caiyue Liu
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jianing Liu
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bio-resources, College of Tropical Crops, Hainan University, Haikou 570228, China
| | - Qianhua Yuan
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bio-resources, College of Tropical Crops, Hainan University, Haikou 570228, China.
| | - Xinwu Pei
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
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14
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Wang W, Huang R, Wu G, Sun J, Zhu Y, Wang H. Transcriptomic and QTL Analysis of Seed Germination Vigor under Low Temperature in Weedy Rice WR04-6. PLANTS (BASEL, SWITZERLAND) 2023; 12:871. [PMID: 36840221 PMCID: PMC9961040 DOI: 10.3390/plants12040871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 02/10/2023] [Accepted: 02/13/2023] [Indexed: 06/18/2023]
Abstract
Low temperature is one of the major factors affecting rice germination, and low temperature germination (LTG) is an important agronomic trait. Although significant progress has been made in the study of rice LTG, the molecular mechanism of LTG remains poorly understood. To explore more rice LTG gene resources, we first demonstrated that weedy rice WR04-6 (Oryza sativa f. spontanea) had significantly higher LTG ability at 10 °C than the cultivated rice Qishanzhan (QSZ Oryza sativa L. ssp. indica). RNA-seq was used to investigate the gene expression of WR04-6 and QSZ at 10 °C for 10, 12 and 14 days after imbibition (DAI) of seed germination. The results of Gene Ontology (GO) enrichment and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment revealed that the differentially expressed genes (DEGs) between WR04-6 and QSZ were mainly concentrated on the response to starch catabolic processes and the response to abscisic acid (ABA). This is consistent with the results of α-amylase activity, ABA and gibberellins (GA) treatment. A recombinant inbred line (RIL) population derived from a cross between WR04-6 and QSZ and its high-density SNP genetic map were used to detect quantitative trait loci (QTL) for LTG rates. The results showed that two new QTLs were located on chromosome 3 and chromosome 12. Combined with the mapped QTLs and RNA-seq DEGs, sixteen candidate genes potentially associated with LTG were identified. Validation of the expression of the candidates by qRT-PCR were consistent with the RNA-seq data. These results will enable us to understand the genetic basis of LTG in weedy rice and provide new genetic resources for the generation of rice germplasm with improved LTG.
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Affiliation(s)
- Wenjia Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Ruizhi Huang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Gengwei Wu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Jian Sun
- Rice Research Institute, Shenyang Agricultural University, Shenyang 110866, China
| | - Ying Zhu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Hua Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
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15
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Ma J, Zuo D, Ye H, Yan Y, Li M, Zhao P. Genome-wide identification, characterization, and expression pattern of the late embryogenesis abundant (LEA) gene family in Juglans regia and its wild relatives J. mandshurica. BMC PLANT BIOLOGY 2023; 23:80. [PMID: 36740678 PMCID: PMC9901102 DOI: 10.1186/s12870-023-04096-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 01/30/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND Late Embryogenesis Abundant (LEA) proteins are a class of proteins associated with plant stress resistance. Two Juglans species, Juglans regia and J. mandshurica, are both diploid (2n = 32), monoecious perennial economic tree species with high edible, pharmaceutical, and timber value. The identification, characterization, and expression patterns of LEA proteins in J. regia and its wild relative, J. mandshurica, would not only provide the genetic basis of this gene family, but it would also supply clues for further studies of the evolution and regulating mechanisms of LEA proteins in other tree species. RESULTS In this study, we identified 25 and 20 members of the LEA gene family in Juglans regia and its wild relative, Juglans mandshurica, respectively. The results of phylogenetic analysis showed that the LEA members were divided into eight main subgroups. Predictions of their physicochemical properties showed the variable characteristics of LEA proteins, and the subcellular localization analysis indicated that most LEA proteins are localized in the nucleus. Chromosomal localization analysis and gene replication pattern prediction indicated that WGD is the predominant duplication mode of LEA genes. The results of the comparative analysis indicated a high level of collinearity between the two Juglans species. Analysis of cis-acting elements indicated that LEA genes had a relatively wide range of responses to abiotic stresses and phytohormonal processes, particularly in two phytohormones, methyl jasmonate and abscisic acid. Transcriptome profiling and qRT-PCR experiments showed that JrLEAs are commonly expressed in leaves, green husks, and male and female flowers, and most JmLEAs are more highly expressed in male flowers. We also hypothesized that JrLEAs are involved in the process of anthracnose resistance. Anthracnose-resistant varieties of JrLEAs presented relatively high expression levels at later stages. CONCLUSION In this study, we provide a theoretical basis for the functional study of LEA genes in J. regia and J. mandshurica. Analysis of cis-acting elements and gene expression indicated that JrLEAs and JmLEAs play important roles in resistance to biotic stresses in these species.
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Affiliation(s)
- Jiayu Ma
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi’an, 710069 Shaanxi China
| | - Dongjun Zuo
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi’an, 710069 Shaanxi China
- College of Life and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT UK
| | - Hang Ye
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi’an, 710069 Shaanxi China
| | - Yujie Yan
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi’an, 710069 Shaanxi China
| | - Mengdi Li
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi’an, 710069 Shaanxi China
| | - Peng Zhao
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi’an, 710069 Shaanxi China
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16
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Jia C, Guo B, Wang B, Li X, Yang T, Li N, Wang J, Yu Q. The LEA gene family in tomato and its wild relatives: genome-wide identification, structural characterization, expression profiling, and role of SlLEA6 in drought stress. BMC PLANT BIOLOGY 2022; 22:596. [PMID: 36536303 PMCID: PMC9762057 DOI: 10.1186/s12870-022-03953-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 11/21/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND Late embryogenesis abundant (LEA) proteins are widely distributed in higher plants and play crucial roles in regulating plant growth and development processes and resisting abiotic stress. Cultivated tomato (Solanum lycopersicum) is an important vegetable crop worldwide; however, its growth, development, yield, and quality are currently severely constrained by abiotic stressors. In contrast, wild tomato species are more tolerant to abiotic stress and can grow normally in extreme environments. The main objective of this study was to identify, characterize, and perform gene expression analysis of LEA protein families from cultivated and wild tomato species to mine candidate genes and determine their potential role in abiotic stress tolerance in tomatoes. RESULTS Total 60, 69, 65, and 60 LEA genes were identified in S. lycopersicum, Solanum pimpinellifolium, Solanum pennellii, and Solanum lycopersicoides, respectively. Characterization results showed that these genes could be divided into eight clusters, with the LEA_2 cluster having the most members. Most LEA genes had few introns and were non-randomly distributed on chromosomes; the promoter regions contained numerous cis-acting regulatory elements related to abiotic stress tolerance and phytohormone responses. Evolutionary analysis showed that LEA genes were highly conserved and that the segmental duplication event played an important role in evolution of the LEA gene family. Transcription and expression pattern analyses revealed different regulatory patterns of LEA genes between cultivated and wild tomato species under normal conditions. Certain S. lycopersicum LEA (SlLEA) genes showed similar expression patterns and played specific roles under different abiotic stress and phytohormone treatments. Gene ontology and protein interaction analyses showed that most LEA genes acted in response to abiotic stimuli and water deficit. Five SlLEA proteins were found to interact with 11 S. lycopersicum WRKY proteins involved in development or resistance to stress. Virus-induced gene silencing of SlLEA6 affected the antioxidant and reactive oxygen species defense systems, increased the degree of cellular damage, and reduced drought resistance in S. lycopersicum. CONCLUSION These findings provide comprehensive information on LEA proteins in cultivated and wild tomato species and their possible functions under different abiotic and phytohormone stresses. The study systematically broadens our current understanding of LEA proteins and candidate genes and provides a theoretical basis for future functional studies aimed at improving stress resistance in tomato.
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Affiliation(s)
- Chunping Jia
- Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences (Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables), Urumqi, China
- College of Life Science and Technology, Xinjiang University, Urumqi, China
| | - Bin Guo
- Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences (Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables), Urumqi, China
- College of Computer and Information Engineering, Xinjiang Agricultural University, Urumqi, China
| | - Baike Wang
- Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences (Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables), Urumqi, China
| | - Xin Li
- Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences (Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables), Urumqi, China
- College of Computer and Information Engineering, Xinjiang Agricultural University, Urumqi, China
| | - Tao Yang
- Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences (Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables), Urumqi, China
| | - Ning Li
- Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences (Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables), Urumqi, China
| | - Juan Wang
- Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences (Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables), Urumqi, China.
| | - Qinghui Yu
- Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences (Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables), Urumqi, China.
- College of Life Science and Technology, Xinjiang University, Urumqi, China.
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Singh A, Banerjee A, Roychoudhury A. Fluoride tolerance in rice is negatively regulated by the 'stress-phytohormone' abscisic acid (ABA), but promoted by ABA-antagonist growth regulators, melatonin, and gibberellic acid. PROTOPLASMA 2022; 259:1331-1350. [PMID: 35084591 DOI: 10.1007/s00709-022-01740-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 01/17/2022] [Indexed: 05/02/2023]
Abstract
The present manuscript aimed at investigating whether abscisic acid (ABA) promotes fluoride tolerance, similar to inciting salt adaptation in rice. Seeds of three salt-tolerant rice genotypes were maintained at 32 °C under 16/8 h light/dark photoperiodic cycle with 700 μmol photons m-2 s-1 intensity and 50% relative humidity in a plant growth chamber for 20 days. Suppressed ABA biosynthesis, and downregulated expression of ABA-inducible genes like Rab16A, Osem, and TRAB1 triggered NaCl-induced growth inhibition and physiological injuries like chlorophyll degradation, electrolyte leakage, formation of H2O2, malondialdehyde, and methylglyoxal in Matla. Reduced ABA accumulation increased the levels of melatonin and gibberellic acid in NaF (50 mg L-1)-stressed Nonabokra and Matla, which altogether promoted fluoride tolerance. Higher ABA content in NaF-stressed Jarava stimulated fluoride uptake via chloride channels, thus exhibiting severe fluoride susceptibility, in spite of higher production of ABA-associated osmolytes like proline, glycine-betaine and polyamines via the concerted action of genes like PDH, ADC, ODC, SAMDC, SPDS, SPMS, DAO, and PAO. Increased accumulation of compatible solutes in presence of high endogenous ABA promoted salt tolerance in Jarava; the same was insufficient to ameliorate fluoride-induced injuries in this cultivar. Treatment with ABA biosynthetic inhibitor, Na2WO4 promoted fluoride tolerance in Jarava, whereas further supplementation with exogenous ABA resulted in reversion back to fluoride-susceptible phenotype. Our work clearly established that ABA cannot always be considered as a 'universal' stress hormone as known in literature, since it acts as a negative regulator of fluoride tolerance which is more tightly regulated in rice via melatonin- and gibberellic acid-dependent pathways in ABA-independent manner.
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Affiliation(s)
- Ankur Singh
- Department of Biotechnology, St. Xavier's College (Autonomous), 30, Mother Teresa Sarani, Kolkata, 700016, West Bengal, India
| | - Aditya Banerjee
- Department of Biotechnology, St. Xavier's College (Autonomous), 30, Mother Teresa Sarani, Kolkata, 700016, West Bengal, India
| | - Aryadeep Roychoudhury
- Department of Biotechnology, St. Xavier's College (Autonomous), 30, Mother Teresa Sarani, Kolkata, 700016, West Bengal, India.
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Geng W, Wang Y, Zhang J, Liu Z, Chen X, Qin L, Yang L, Tang H. Genome-wide identification and expression analyses of late embryogenesis abundant (LEA) gene family in tobacco (Nicotiana tabacum L.) reveal their function in abiotic stress responses. Gene 2022; 836:146665. [PMID: 35691407 DOI: 10.1016/j.gene.2022.146665] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Revised: 04/11/2022] [Accepted: 06/06/2022] [Indexed: 12/29/2022]
Abstract
Late embryogenesis abundant (LEA) proteins play an important role in plant growth and response to abiotic stresses. However the late embryogenesis abundant (LEA) gene family in Nicotiana tabacum has not been systematically studied. In this study, 123 NtLEA genes were identified in Nicotiana tabacum, and divided into 8 groups, including LEA_1, LEA_2, LEA_3, LEA_4, LEA_5, LEA_6, DHN (dehydratin) and SMP (Seed Maturation Protein). The LEA_2 group is the most abundant of the NtLEA family. The gene structure, conserved motifs, subcellular localization and physicochemical properties of the NtLEA genes were analyzed. RNA-seq and qPCR analyses showed that the NtLEA genes were significantly induced under two different abiotic stresses and showed different expression patterns. The expression patterns of 35 NtLEA genes responding to ABA and 3 NtLEA genes responding to NaCl abiotic stress, respectively, were characterized. The protein-protein interaction network revealed that most NtLEA proteins (>78%) had the potential function to enhance tobacco resistance to abiotic stress. The transcriptional regulatory network showed that 21 transcription factor families were involved in regulating the expression of the NtLEA genes. These results are beneficial for future studies of the function of the NtLEA genes.
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Affiliation(s)
- Weibo Geng
- Shandong Agricultural University, 271000 Taian, China
| | - Yanan Wang
- Shandong Agricultural University, 271000 Taian, China
| | - Jing Zhang
- Shandong Agricultural University, 271000 Taian, China
| | - Zhonghui Liu
- Shandong Agricultural University, 271000 Taian, China
| | - Xingyun Chen
- Shandong Agricultural University, 271000 Taian, China
| | - Liting Qin
- Shandong Agricultural University, 271000 Taian, China
| | - Long Yang
- Shandong Agricultural University, 271000 Taian, China.
| | - Heng Tang
- Shandong Agricultural University, 271000 Taian, China.
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Wang G, Xu X, Gao Z, Liu T, Li Y, Hou X. Genome-wide identification of LEA gene family and cold response mechanism of BcLEA4-7 and BcLEA4-18 in non-heading Chinese cabbage [Brassica campestris (syn. Brassica rapa) ssp. chinensis]. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2022; 321:111291. [PMID: 35696933 DOI: 10.1016/j.plantsci.2022.111291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 04/13/2022] [Accepted: 04/14/2022] [Indexed: 06/15/2023]
Abstract
Cold stress is a key factor limiting the yield and quality of non-heading Chinese cabbage. The hydrophilic protective protein LEA plays an important role in plant abiotic stress. In this study, 72 BcLEAs were identified from non-heading Chinese cabbage and divided into 9 subfamilies by phylogenetic analysis. Gene structure analysis showed that BcLEAs were unevenly distributed on 10 chromosomes, with few introns. Through analyzing the expression of these genes under cold stress by RNA-seq and qRT-PCR, two genes (BcLEA4-7 and BcLEA4-18) highly sensitive to cold stress were identified, whose roles in cold tolerance of non-heading Chinese cabbage were demonstrated by virus-induced gene silencing. The BcLEA promoters were analyzed to study the cold response mechanism of BcLEA4-7 and BcLEA4-18, revealing that both BcLEA4-7 and BcLEA4-18 promoters contained two CRT/DRE elements. Subsequently, it was found that the promoters isolated from non-heading Chinese cabbage could be activated at low temperatures. Further analysis showed BcCBF2 in non-heading Chinese cabbage interacted with two CRT/DRE elements in BcLEA4-7 and BcLEA4-18 promoters to stimulate their activity, indicating that BcCBF2 is an upstream regulator. Meanwhile, the CRT/DRE element located in BcLEA4-7 promoter (-219 bp to -171 bp) and BcLEA4-18 promoter (-234 bp to -186 bp) was more likely to be activated by BcCBF2, which may be attributed to its flanking sequence. These data laid a foundation for further understanding the functional role and regulatory mechanism of BcLEAs in cold stress tolerance.
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Affiliation(s)
- Guangpeng Wang
- State Key Laboratory of Crop Genetics & Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (East China), Ministry of Agriculture and Rural Affairs, PR China; Engineering Research Center of Germplasm Enhancement and Utilization of Horticultural Crops, Ministry of Education, PR China; Nanjing Suman Plasma Engineering Research Institute, Nanjing Agricultural University, Nanjing 210095, China
| | - Xinfeng Xu
- State Key Laboratory of Crop Genetics & Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (East China), Ministry of Agriculture and Rural Affairs, PR China; Engineering Research Center of Germplasm Enhancement and Utilization of Horticultural Crops, Ministry of Education, PR China
| | - Zhanyuan Gao
- State Key Laboratory of Crop Genetics & Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (East China), Ministry of Agriculture and Rural Affairs, PR China; Engineering Research Center of Germplasm Enhancement and Utilization of Horticultural Crops, Ministry of Education, PR China; Nanjing Suman Plasma Engineering Research Institute, Nanjing Agricultural University, Nanjing 210095, China
| | - Tongkun Liu
- State Key Laboratory of Crop Genetics & Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (East China), Ministry of Agriculture and Rural Affairs, PR China; Engineering Research Center of Germplasm Enhancement and Utilization of Horticultural Crops, Ministry of Education, PR China
| | - Ying Li
- State Key Laboratory of Crop Genetics & Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (East China), Ministry of Agriculture and Rural Affairs, PR China; Engineering Research Center of Germplasm Enhancement and Utilization of Horticultural Crops, Ministry of Education, PR China; Nanjing Suman Plasma Engineering Research Institute, Nanjing Agricultural University, Nanjing 210095, China
| | - Xilin Hou
- State Key Laboratory of Crop Genetics & Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (East China), Ministry of Agriculture and Rural Affairs, PR China; Engineering Research Center of Germplasm Enhancement and Utilization of Horticultural Crops, Ministry of Education, PR China; Nanjing Suman Plasma Engineering Research Institute, Nanjing Agricultural University, Nanjing 210095, China.
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20
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Kong H, Xia W, Hou M, Ruan N, Li J, Zhu J. Cloning and function analysis of a Saussurea involucrata LEA4 gene. FRONTIERS IN PLANT SCIENCE 2022; 13:957133. [PMID: 35928707 PMCID: PMC9343949 DOI: 10.3389/fpls.2022.957133] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 06/29/2022] [Indexed: 06/15/2023]
Abstract
Late embryogenesis abundant proteins (LEA) help adapt to adverse low-temperature environments. The Saussurea involucrate SiLEA4, which encodes a membrane protein, was significantly up-regulated in response to low temperature stress. Escherichia coli expressing SiLEA4 showed enhanced low-temperature tolerance, as evident from the significantly higher survival numbers and growth rates at low temperatures. Moreover, tomato strains expressing SiLEA4 had significantly greater freezing resistance, due to a significant increase in the antioxidase activities and proline content. Furthermore, they had higher yields due to higher water utilization and photosynthetic efficiency under the same water and fertilizer conditions. Thus, expressing SiLEA4 has multiple advantages: (1) mitigating chilling injury, (2) increasing yields, and (3) water-saving, which also indicates the great potential of the SiLEA4 for breeding applications.
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Affiliation(s)
- Hui Kong
- Key Laboratory of Agricultural Biotechnology, College of Life Sciences, Shihezi University, Shihezi, China
| | - Wenwen Xia
- Key Laboratory of Agricultural Biotechnology, College of Life Sciences, Shihezi University, Shihezi, China
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
- Hainan Yazhou Bay Seed Laboratory, Sanya, China
| | - Mengjuan Hou
- Key Laboratory of Agricultural Biotechnology, College of Life Sciences, Shihezi University, Shihezi, China
| | - Nan Ruan
- Key Laboratory of Agricultural Biotechnology, College of Life Sciences, Shihezi University, Shihezi, China
| | - Jin Li
- Key Laboratory of Agricultural Biotechnology, College of Life Sciences, Shihezi University, Shihezi, China
| | - Jianbo Zhu
- Key Laboratory of Agricultural Biotechnology, College of Life Sciences, Shihezi University, Shihezi, China
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21
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Yadav R, Chakraborty S, Ramakrishna W. Wheat grain proteomic and protein-metabolite interactions analyses provide insights into plant growth promoting bacteria-arbuscular mycorrhizal fungi-wheat interactions. PLANT CELL REPORTS 2022; 41:1417-1437. [PMID: 35396966 DOI: 10.1007/s00299-022-02866-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 03/18/2022] [Indexed: 06/14/2023]
Abstract
Proteomic, protein-protein and protein-metabolite interaction analyses in wheat inoculated with PGPB and AMF identified key proteins and metabolites that may have a role in enhancing yield and biofortification. Plant growth-promoting bacteria (PGPB) and arbuscular mycorrhizal fungi (AMF) have an impact on grain yield and nutrition. This dynamic yet complex interaction implies a broad reprogramming of the plant's metabolic and proteomic activities. However, little information is available regarding the role of native PGPB and AMF and how they affect the plant proteome, especially under field conditions. Here, proteomic, protein-protein and protein-metabolite interaction studies in wheat triggered by PGPB, Bacillus subtilis CP4 either alone or together with AMF under field conditions was carried out. The dual inoculation with native PGPB (CP4) and AMF promoted the differential abundance of many proteins, such as histones, glutenin, avenin and ATP synthase compared to the control and single inoculation. Interaction study of these differentially expressed proteins using STRING revealed that they interact with other proteins involved in seed development and abiotic stress tolerance. Furthermore, these interacting proteins are involved in carbon fixation, sugar metabolism and biosynthesis of amino acids. Molecular docking predicted that wheat seed storage proteins, avenin and glutenin interact with secondary metabolites, such as trehalose, and sugars, such as xylitol. Mapping of differentially expressed proteins to KEGG pathways showed their involvement in sugar metabolism, biosynthesis of secondary metabolites and modulation of histones. These proteins and metabolites can serve as markers for improving wheat-PGPB-AMF interactions leading to higher yield and biofortification.
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Affiliation(s)
- Radheshyam Yadav
- Department of Biochemistry, Central University of Punjab, VPO Ghudda, Punjab, India
| | - Sudip Chakraborty
- Department of Computational Sciences, Central University of Punjab, VPO Ghudda, Punjab, India
| | - Wusirika Ramakrishna
- Department of Biochemistry, Central University of Punjab, VPO Ghudda, Punjab, India.
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22
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Liu T, Chen T, Kan J, Yao Y, Guo D, Yang Y, Ling X, Wang J, Zhang B. The GhMYB36 transcription factor confers resistance to biotic and abiotic stress by enhancing PR1 gene expression in plants. PLANT BIOTECHNOLOGY JOURNAL 2022; 20:722-735. [PMID: 34812570 PMCID: PMC8989497 DOI: 10.1111/pbi.13751] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 11/09/2021] [Indexed: 05/20/2023]
Abstract
Drought and Verticillium wilt disease are two main factors that limit cotton production, which necessitates the identification of key molecular switch to simultaneously improve cotton resistance to Verticillium dahliae and tolerance to drought stress. R2R3-type MYB proteins could play such a role because of their conserved functions in plant development, growth, and metabolism regulation, however, till date a MYB gene conferring the desired resistance to both biotic and abiotic stresses has not been found in cotton. Here, we describe the identification of GhMYB36, a gene encoding a R2R3-type MYB protein in Gossypium hirsutum, which confers drought tolerance and Verticilium wilt resistance in both Arabidopsis and cotton. GhMYB36 was highly induced by PEG-simulated drought stress in G. hirsutum. GhMYB36-silenced cotton plants were more sensitive to both drought stress and Verticillium wilt. GhMYB36 overexpression in transgenic Arabidopsis and cotton plants gave rise to improved drought tolerance and Verticillium wilt resistance. Transient expression of fused GhMYB36-GFP in tobacco cells was able to localize GhMYB36 in the cell nucleus. In addition, RNA-seq analysis together with qRT-PCR validation in transgenic Arabidopsis overexpressing GhMYB36 revealed significantly enhanced PR1 expression. Luciferase interaction assays indicated that GhMYB36 are probably bound to the promoter of PR1 to activate its expression and the interaction, which was further verified by Yeast one hybrid assay. Taken together, our results suggest that GhMYB36 functions as a transcription factor that is involved in drought tolerance and Verticillium wilt resistance in Arabidopsis and cotton by enhancing PR1 expression.
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Affiliation(s)
- Tingli Liu
- Excellence and innovation centerJiangsu Academy of Agricultural SciencesNanjingChina
| | - Tianzi Chen
- Excellence and innovation centerJiangsu Academy of Agricultural SciencesNanjingChina
| | - Jialiang Kan
- Excellence and innovation centerJiangsu Academy of Agricultural SciencesNanjingChina
| | - Yao Yao
- Excellence and innovation centerJiangsu Academy of Agricultural SciencesNanjingChina
| | - Dongshu Guo
- Excellence and innovation centerJiangsu Academy of Agricultural SciencesNanjingChina
| | - Yuwen Yang
- Excellence and innovation centerJiangsu Academy of Agricultural SciencesNanjingChina
| | - Xitie Ling
- Excellence and innovation centerJiangsu Academy of Agricultural SciencesNanjingChina
| | - Jinyan Wang
- Excellence and innovation centerJiangsu Academy of Agricultural SciencesNanjingChina
| | - Baolong Zhang
- Excellence and innovation centerJiangsu Academy of Agricultural SciencesNanjingChina
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23
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Samtani H, Sharma A, Khurana P. Overexpression of HVA1 Enhances Drought and Heat Stress Tolerance in Triticum aestivum Doubled Haploid Plants. Cells 2022; 11:cells11050912. [PMID: 35269534 PMCID: PMC8909738 DOI: 10.3390/cells11050912] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 02/28/2022] [Indexed: 12/13/2022] Open
Abstract
Plant responses to multiple environmental stresses include various signaling pathways that allow plant acclimation and survival. Amongst different stresses, drought and heat stress severely affect growth and productivity of wheat. HVA1, a member of the group 3 LEA protein, has been well known to provide protection against drought stress. However, its mechanism of action and its role in other stresses such as heat remain unexplored. In this study, doubled haploid (DH) wheat plants overexpressing the HVA1 gene were analyzed and found to be both drought-and heat stress-tolerant. The transcriptome analysis revealed the upregulation of transcription factors such as DREB and HsfA6 under drought and heat stress, respectively, which contribute toward the tolerance mechanism. Particularly under heat stress conditions, the transgenic plants had a lower oxidative load and showed enhanced yield. The overexpression lines were found to be ABA-sensitive, therefore suggesting the role of HsfA6 in providing heat tolerance via the ABA-mediated pathway. Thus, apart from its known involvement in drought stress, this study highlights the potential role of HVA1 in the heat stress signaling pathway. This can further facilitate the engineering of multiple stress tolerance in crop plants, such as wheat.
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24
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Jiang Y, Wu X, Shi M, Yu J, Guo C. The miR159-MYB33-ABI5 module regulates seed germination in Arabidopsis. PHYSIOLOGIA PLANTARUM 2022; 174:e13659. [PMID: 35244224 DOI: 10.1111/ppl.13659] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 02/26/2022] [Accepted: 03/02/2022] [Indexed: 06/14/2023]
Abstract
Drought stress restricts crop productivity and exacerbates food shortages. The plant hormone, abscisic acid (ABA), has been shown to be a pivotal player in the regulation of drought tolerance and seed germination in plants. ABA accumulates under abiotic stresses to promote miR159 expression. miR159 is an ancient and conserved plant miRNA that plays diverse roles in plant development, seed germination, and drought response in Arabidopsis. Our previous studies demonstrated that miR159 regulates the vegetative phase change by repressing the ABI5 activation and thereafter preventing hyperactivation of miR156. However, whether the miR159-MYB33-ABI5 module plays a role in seed germination and drought response, and if so, how they interact genetically, remain largely unexplored. Here, we show that loss-of-function of miR159 (mir159ab) confers enhanced drought tolerance and hypersensitivity of seed germination to ABA. Genetic analyses demonstrated that loss-of-function mutation in the ABI5 gene suppresses the hypersensitivity of mir159ab to ABA, and the insensitivity of myb33 seeds to ABA treatment is ABI5 dependent. ABI5 functions downstream of MYB33 and miR159 in response to ABA. Therefore, our results uncover a new role for the miR159-MYB33-ABI5 module in the regulation of drought response and seed germination in plants.
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Affiliation(s)
- Youqi Jiang
- Laboratory of Plant Molecular and Developmental Biology, Zhejiang Agriculture and Forestry University, Hangzhou, China
| | - Xi Wu
- Laboratory of Plant Molecular and Developmental Biology, Zhejiang Agriculture and Forestry University, Hangzhou, China
| | - Min Shi
- Laboratory of Plant Molecular and Developmental Biology, Zhejiang Agriculture and Forestry University, Hangzhou, China
| | - Jing Yu
- Laboratory of Plant Molecular and Developmental Biology, Zhejiang Agriculture and Forestry University, Hangzhou, China
| | - Changkui Guo
- Laboratory of Plant Molecular and Developmental Biology, Zhejiang Agriculture and Forestry University, Hangzhou, China
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25
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Li L, Zhou X, Chen Z, Cao Y, Zhao G. The group 3 LEA protein of Artemia franciscana for cryopreservation. Cryobiology 2022; 106:1-12. [DOI: 10.1016/j.cryobiol.2022.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 01/25/2022] [Accepted: 01/25/2022] [Indexed: 11/03/2022]
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26
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Zargar SM, Mir RA, Ebinezer LB, Masi A, Hami A, Manzoor M, Salgotra RK, Sofi NR, Mushtaq R, Rohila JS, Rakwal R. Physiological and Multi-Omics Approaches for Explaining Drought Stress Tolerance and Supporting Sustainable Production of Rice. FRONTIERS IN PLANT SCIENCE 2022; 12:803603. [PMID: 35154193 PMCID: PMC8829427 DOI: 10.3389/fpls.2021.803603] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 12/14/2021] [Indexed: 05/12/2023]
Abstract
Drought differs from other natural disasters in several respects, largely because of the complexity of a crop's response to it and also because we have the least understanding of a crop's inductive mechanism for addressing drought tolerance among all abiotic stressors. Overall, the growth and productivity of crops at a global level is now thought to be an issue that is more severe and arises more frequently due to climatic change-induced drought stress. Among the major crops, rice is a frontline staple cereal crop of the developing world and is critical to sustaining populations on a daily basis. Worldwide, studies have reported a reduction in rice productivity over the years as a consequence of drought. Plants are evolutionarily primed to withstand a substantial number of environmental cues by undergoing a wide range of changes at the molecular level, involving gene, protein and metabolite interactions to protect the growing plant. Currently, an in-depth, precise and systemic understanding of fundamental biological and cellular mechanisms activated by crop plants during stress is accomplished by an umbrella of -omics technologies, such as transcriptomics, metabolomics and proteomics. This combination of multi-omics approaches provides a comprehensive understanding of cellular dynamics during drought or other stress conditions in comparison to a single -omics approach. Thus a greater need to utilize information (big-omics data) from various molecular pathways to develop drought-resilient crop varieties for cultivation in ever-changing climatic conditions. This review article is focused on assembling current peer-reviewed published knowledge on the use of multi-omics approaches toward expediting the development of drought-tolerant rice plants for sustainable rice production and realizing global food security.
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Affiliation(s)
- Sajad Majeed Zargar
- Proteomics Laboratory, Division of Plant Biotechnology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Srinagar, India
| | - Rakeeb Ahmad Mir
- Department of Biotechnology, School of Biosciences and Biotechnology, BGSB University, Rajouri, India
| | - Leonard Barnabas Ebinezer
- Department of Agronomy, Food, Natural Resources, Animals, and Environment, University of Padova, Padua, Italy
| | - Antonio Masi
- Department of Agronomy, Food, Natural Resources, Animals, and Environment, University of Padova, Padua, Italy
| | - Ammarah Hami
- Proteomics Laboratory, Division of Plant Biotechnology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Srinagar, India
| | - Madhiya Manzoor
- Proteomics Laboratory, Division of Plant Biotechnology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Srinagar, India
| | - Romesh K. Salgotra
- School of Biotechnology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, Jammu, India
| | - Najeebul Rehman Sofi
- Division of Plant Breeding and Genetics, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Srinagar, India
| | - Roohi Mushtaq
- Department of Biotechnology and Bioinformatics, SP College, Cluster University Srinagar, Srinagar, India
| | - Jai Singh Rohila
- Dale Bumpers National Rice Research Center, United States Department of Agriculture (USDA)-Agricultural Research Service (ARS), Stuttgart, AR, United States
| | - Randeep Rakwal
- Faculty of Health and Sport Sciences, University of Tsukuba, Ibaraki, Japan
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Huang S, Hu L, Zhang S, Zhang M, Jiang W, Wu T, Du X. Rice OsWRKY50 Mediates ABA-Dependent Seed Germination and Seedling Growth, and ABA-Independent Salt Stress Tolerance. Int J Mol Sci 2021; 22:ijms22168625. [PMID: 34445331 PMCID: PMC8395310 DOI: 10.3390/ijms22168625] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/08/2021] [Accepted: 08/09/2021] [Indexed: 11/16/2022] Open
Abstract
Plant WRKY transcription factors play crucial roles in plant growth and development, as well as plant responses to biotic and abiotic stresses. In this study, we identified and characterized a WRKY transcription factor in rice, OsWRKY50. OsWRKY50 functions as a transcriptional repressor in the nucleus. The transcription of OsWRKY50 was repressed under salt stress conditions, but activated after abscisic acid (ABA) treatment. OsWRKY50-overexpression (OsWRKY50-OX) plants displayed increased tolerance to salt stress compared to wild type and control plants. The expression of OsLEA3, OsRAB21, OsHKT1;5, and OsP5CS1 in OsWRKY50-OX were much higher than wild type and control plants under salt stress. Furthermore, OsWRKY50-OX displayed hyposensitivity to ABA-regulated seed germination and seedling establishment. The protoplast-based transient expression system and yeast hybrid assay demonstrated that OsWRKY50 directly binds to the promoter of OsNCED5, and thus further inhibits its transcription. Taken together, our results demonstrate that rice transcription repressor OsWRKY50 mediates ABA-dependent seed germination and seedling growth and enhances salt stress tolerance via an ABA-independent pathway.
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Affiliation(s)
| | | | | | | | | | - Tao Wu
- Correspondence: (T.W.); (X.D.)
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28
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Cheng Z, Zhang X, Yao W, Zhao K, Liu L, Fan G, Zhou B, Jiang T. Genome-wide search and structural and functional analyses for late embryogenesis-abundant (LEA) gene family in poplar. BMC PLANT BIOLOGY 2021; 21:110. [PMID: 33627082 PMCID: PMC7903804 DOI: 10.1186/s12870-021-02872-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Accepted: 02/02/2021] [Indexed: 05/26/2023]
Abstract
BACKGROUND The Late Embryogenesis-Abundant (LEA) gene families, which play significant roles in regulation of tolerance to abiotic stresses, widely exist in higher plants. Poplar is a tree species that has important ecological and economic values. But systematic studies on the gene family have not been reported yet in poplar. RESULTS On the basis of genome-wide search, we identified 88 LEA genes from Populus trichocarpa and renamed them as PtrLEA. The PtrLEA genes have fewer introns, and their promoters contain more cis-regulatory elements related to abiotic stress tolerance. Our results from comparative genomics indicated that the PtrLEA genes are conserved and homologous to related genes in other species, such as Eucalyptus robusta, Solanum lycopersicum and Arabidopsis. Using RNA-Seq data collected from poplar under two conditions (with and without salt treatment), we detected 24, 22 and 19 differentially expressed genes (DEGs) in roots, stems and leaves, respectively. Then we performed spatiotemporal expression analysis of the four up-regulated DEGs shared by the tissues, constructed gene co-expression-based networks, and investigated gene function annotations. CONCLUSION Lines of evidence indicated that the PtrLEA genes play significant roles in poplar growth and development, as well as in responses to salt stress.
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Affiliation(s)
- Zihan Cheng
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Xuemei Zhang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Wenjing Yao
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
- Bamboo Research Institute, Nanjing Forestry University, 159 Longpan Road, Nanjing, 210037, China
| | - Kai Zhao
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Lin Liu
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Gaofeng Fan
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Boru Zhou
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China.
| | - Tingbo Jiang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China.
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Samarina LS, Bobrovskikh AV, Doroshkov AV, Malyukova LS, Matskiv AO, Rakhmangulov RS, Koninskaya NG, Malyarovskaya VI, Tong W, Xia E, Manakhova KA, Ryndin AV, Orlov YL. Comparative Expression Analysis of Stress-Inducible Candidate Genes in Response to Cold and Drought in Tea Plant [ Camellia sinensis (L.) Kuntze]. Front Genet 2020; 11:611283. [PMID: 33424935 PMCID: PMC7786056 DOI: 10.3389/fgene.2020.611283] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 11/23/2020] [Indexed: 12/15/2022] Open
Abstract
Cold and drought are two of the most severe threats affecting the growth and productivity of the tea plant, limiting its global spread. Both stresses cause osmotic changes in the cells of the tea plant by decreasing their water potential. To develop cultivars that are tolerant to both stresses, it is essential to understand the genetic responses of tea plant to these two stresses, particularly in terms of the genes involved. In this study, we combined literature data with interspecific transcriptomic analyses (using Arabidopsis thaliana and Solanum lycopersicum) to choose genes related to cold tolerance. We identified 45 stress-inducible candidate genes associated with cold and drought responses in tea plants based on a comprehensive homologous detection method. Of these, nine were newly characterized by us, and 36 had previously been reported. The gene network analysis revealed upregulated expression in ICE1-related cluster of bHLH factors, HSP70/BAM5 connected genes (hexokinases, galactinol synthases, SnRK complex, etc.) indicating their possible co-expression. Using qRT-PCR we revealed that 10 genes were significantly upregulated in response to both cold and drought in tea plant: HSP70, GST, SUS1, DHN1, BMY5, bHLH102, GR-RBP3, ICE1, GOLS1, and GOLS3. SnRK1.2, HXK1/2, bHLH7/43/79/93 were specifically upregulated in cold, while RHL41, CAU1, Hydrolase22 were specifically upregulated in drought. Interestingly, the expression of CIP was higher in the recovery stage of both stresses, indicating its potentially important role in plant recovery after stress. In addition, some genes, such as DHN3, bHLH79, PEI54, SnRK1.2, SnRK1.3, and Hydrolase22, were significantly positively correlated between the cold and drought responses. CBF1, GOLS1, HXK2, and HXK3, by contrast, showed significantly negative correlations between the cold and drought responses. Our results provide valuable information and robust candidate genes for future functional analyses intended to improve the stress tolerance of the tea plant and other species.
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Affiliation(s)
- Lidiia S Samarina
- Biotechnology Department, Federal Research Centre the Subtropical Scientific Centre of the Russian Academy of Sciences, Sochi, Russia
| | - Alexandr V Bobrovskikh
- Biotechnology Department, Federal Research Centre the Subtropical Scientific Centre of the Russian Academy of Sciences, Sochi, Russia.,Institute Cytology and Genetics Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Alexey V Doroshkov
- Biotechnology Department, Federal Research Centre the Subtropical Scientific Centre of the Russian Academy of Sciences, Sochi, Russia.,Institute Cytology and Genetics Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Lyudmila S Malyukova
- Biotechnology Department, Federal Research Centre the Subtropical Scientific Centre of the Russian Academy of Sciences, Sochi, Russia
| | - Alexandra O Matskiv
- Biotechnology Department, Federal Research Centre the Subtropical Scientific Centre of the Russian Academy of Sciences, Sochi, Russia
| | - Ruslan S Rakhmangulov
- Biotechnology Department, Federal Research Centre the Subtropical Scientific Centre of the Russian Academy of Sciences, Sochi, Russia
| | - Natalia G Koninskaya
- Biotechnology Department, Federal Research Centre the Subtropical Scientific Centre of the Russian Academy of Sciences, Sochi, Russia
| | - Valentina I Malyarovskaya
- Biotechnology Department, Federal Research Centre the Subtropical Scientific Centre of the Russian Academy of Sciences, Sochi, Russia
| | - Wei Tong
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, China
| | - Enhua Xia
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, China
| | - Karina A Manakhova
- Biotechnology Department, Federal Research Centre the Subtropical Scientific Centre of the Russian Academy of Sciences, Sochi, Russia
| | - Alexey V Ryndin
- Biotechnology Department, Federal Research Centre the Subtropical Scientific Centre of the Russian Academy of Sciences, Sochi, Russia
| | - Yuriy L Orlov
- Biotechnology Department, Federal Research Centre the Subtropical Scientific Centre of the Russian Academy of Sciences, Sochi, Russia.,Agrarian and Technological Institute, Peoples' Friendship University of Russia (RUDN University), Moscow, Russia
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30
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Kumar S, Ayachit G, Sahoo L. Screening of mungbean for drought tolerance and transcriptome profiling between drought-tolerant and susceptible genotype in response to drought stress. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 157:229-238. [PMID: 33129069 DOI: 10.1016/j.plaphy.2020.10.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 10/19/2020] [Indexed: 06/11/2023]
Abstract
Mungbean, is a widely cultivated pulse crop in India, experiences severe drought stress during the cultivation period. The mechanism of drought tolerance in mungbean is not well understood. In this presents study we screened 7 widely cultivated mungbean genotypes towards their drought sensitivity at seedling stage and transcriptome sequencing of drought-tolerant and susceptible genotype to understand the drought tolerance mechanism. Our physiological data such as increase in root length, shoot length, fresh weight, dry weight, relative water content (RWC), proline content, MDA content and molecular data in terms of quantitative expression of drought stress responsive genes under 3-d drought stress in mungbean suggests that, K851 seems to be most drought tolerant and PDM-139 as drought susceptible genotype. The transcriptomic study between K-851 and PDM-139 revealed 22,882 differentially expressed genes (DEGs) which were identified under drought stress, and they were mainly mapped to phytohormone signal transduction, carbon metabolism and flavonoid biosynthesis. Out of these, 10,235 genes were up-regulated and 12,647 genes were down-regulated. Furthermore, we found that, the DEGs related to, phytohormone signal transduction, carbon metabolism and flavonoid biosynthesis and they were more induced in K-851. Our data suggested that, the drought tolerant genotype K-851, scavenges the damage of drought stress by producing more amount of osmolytes, ROS scavengers and sugar biosynthesis.
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Affiliation(s)
- Sanjeev Kumar
- Department of Bioscience and Bioengineering, Indian Institute of Technology Guwahai, Guwahati, 781039, India.
| | - Garima Ayachit
- Department of Botany, Bioinformatics and Climate Change, Gujarat University, Navrangpura, Ahmedabad, 380009, India
| | - Lingaraj Sahoo
- Department of Bioscience and Bioengineering, Indian Institute of Technology Guwahai, Guwahati, 781039, India.
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31
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Lin F, Li S, Wang K, Tian H, Gao J, Zhao Q, Du C. A leucine-rich repeat receptor-like kinase, OsSTLK, modulates salt tolerance in rice. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2020; 296:110465. [PMID: 32540023 DOI: 10.1016/j.plantsci.2020.110465] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2019] [Revised: 02/24/2020] [Accepted: 03/08/2020] [Indexed: 05/23/2023]
Abstract
Leucine-rich repeat receptor-like kinases (LRR-RLKs) have been widely associated with plant abiotic stress responses. However, the functions of the majority of LRR-RLKs has not been well defined. Here, we identified a novel rice LRR-RLK member involved in salt tolerance and designated as OsSTLK (Oryza sativa L. Salt-Tolerance LRR-RLK). Transcript analysis showed that OsSTLK was significantly induced in response to salt stress in rice shoot and root in a time and dosage-dependent fashion. Phenotypic observations indicated that OsSTLK overexpression exhibited reduced salt sensitivity, and improved salt stress tolerance. Further physiological analysis showed that OsSTLK overexpression remarkably reduced electrolyte leakage, malondialdehyde (MDA) content, reactive oxygen species (ROS) accumulation under salt stress conditions by up-regulating ROS-scavenging activities and modifying stomatal patterning. Moreover, Na+/K+ ratio and MAPK phosphorylation level were also reduced in OsSTLK-overexpression transgenic rice plants compared with WT control. Taken together, our findings suggested that OsSTLK as an important positive regulator of salt stress tolerance perhaps through regulating ROS scavenging system, Na+/K+ ratio and MAPK signal pathway.
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Affiliation(s)
- Faming Lin
- Collaborative Innovation Center of Henan Grain Crops, Rice Engineer Center in Henan Province, College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China
| | - Shen Li
- Collaborative Innovation Center of Henan Grain Crops, Rice Engineer Center in Henan Province, College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China
| | - Ke Wang
- Collaborative Innovation Center of Henan Grain Crops, Rice Engineer Center in Henan Province, College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China
| | - Haoran Tian
- Collaborative Innovation Center of Henan Grain Crops, Rice Engineer Center in Henan Province, College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China
| | - Junfeng Gao
- Collaborative Innovation Center of Henan Grain Crops, Rice Engineer Center in Henan Province, College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China
| | - Quanzhi Zhao
- Collaborative Innovation Center of Henan Grain Crops, Rice Engineer Center in Henan Province, College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China.
| | - Changqing Du
- Collaborative Innovation Center of Henan Grain Crops, Rice Engineer Center in Henan Province, College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China.
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32
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Qin Q, Wang Y, Huang L, Du F, Zhao X, Li Z, Wang W, Fu B. A U-box E3 ubiquitin ligase OsPUB67 is positively involved in drought tolerance in rice. PLANT MOLECULAR BIOLOGY 2020; 102:89-107. [PMID: 31768809 DOI: 10.1007/s11103-019-00933-8] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 11/19/2019] [Indexed: 05/29/2023]
Abstract
OsPUB67, a U-box E3 ubiquitin ligase, may interact with two drought tolerance negative regulators (OsRZFP34 and OsDIS1) and improve drought tolerance by enhancing the reactive oxygen scavenging ability and stomatal closure. E3 ubiquitin ligases are major components of the ubiquitination cascade and contribute to the biotic and abiotic stress response in plants. In the present study, we show that a rice drought responsive gene, OsPUB67, encoding the U-box E3 ubiquitin ligase was significantly induced by drought, salt, cold, JA, and ABA, and was expressed in nuclei, cytoplasm, and membrane systems. This distribution of expression suggests a significant role for OsPUB67 in a wide range of biological processes and abiotic stress response. Over-expression of OsPUB67 improved drought stress tolerance by enhancing the reactive oxygen scavenging ability and stomatal closure. Bimolecular fluorescence complementation assays revealed that a few E2s interacted with OsPUB67 with unique functional implications in different cell components. Further evidence showed that several E3 ubiquitin ligases interacted with OsPUB67, especially OsRZFP34 and OsDIS1, which are negative regulators of drought tolerance. This interaction on the stomata implied OsPUB67 might function as a heterodimeric ubiquitination complex in response to drought stress. Comprehensive transcriptome analysis revealed OsPUB67 participated in regulating genes involved in the abiotic stress response and transcriptional regulation in an ABA-dependent manner. Our findings revealed OsPUB67 mediated a multilayered complex drought stress tolerance mechanism.
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Affiliation(s)
- Qiao Qin
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yinxiao Wang
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Liyu Huang
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, China
- School of Agriculture, Yunnan University, Yunnan, China
| | - Fengping Du
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xiuqin Zhao
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Zhikang Li
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, China
- College of Agronomy, Anhui Agricultural University, Hefei, China
| | - Wensheng Wang
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, China.
- College of Agronomy, Anhui Agricultural University, Hefei, China.
| | - Binying Fu
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, China.
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33
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Xie Z, Wang J, Wang W, Wang Y, Xu J, Li Z, Zhao X, Fu B. Integrated Analysis of the Transcriptome and Metabolome Revealed the Molecular Mechanisms Underlying the Enhanced Salt Tolerance of Rice Due to the Application of Exogenous Melatonin. FRONTIERS IN PLANT SCIENCE 2020; 11:618680. [PMID: 33519878 PMCID: PMC7840565 DOI: 10.3389/fpls.2020.618680] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Accepted: 12/22/2020] [Indexed: 05/13/2023]
Abstract
High salinity is one of the major abiotic stresses limiting rice production. Melatonin has been implicated in the salt tolerance of rice. However, the molecular basis of melatonin-mediated salt tolerance in rice remains unclear. In the present study, we performed an integrated transcriptome and metabolome profiling of rice seedlings treated with salt, melatonin, or salt + melatonin. The application of exogenous melatonin increased the salt tolerance of rice plants by decreasing the sodium content to maintain Na+/K+ homeostasis, alleviating membrane lipid oxidation, and enhancing chlorophyll contention. A comparative transcriptome analysis revealed that complex molecular pathways contribute to melatonin-mediated salt tolerance. More specifically, the AP2/EREBP-HB-WRKY transcriptional cascade and phytohormone (e.g., auxin and abscisic acid) signaling pathways were activated by an exogenous melatonin treatment. On the basis of metabolome profiles, 64 metabolites, such as amino acids, organic acids, nucleotides, and secondary metabolites, were identified with increased abundances only in plants treated with salt + melatonin. Several of these metabolites including endogenous melatonin and its intermediates (5-hydroxy-L-tryptophan, N 1-acetyl-N 2-formyl-5-methoxykynuramine), gallic acid, diosmetin, and cyanidin 3-O-galactoside had antioxidant functions, suggesting melatonin activates multiple antioxidant pathways to alleviate the detrimental effects of salt stress. Combined transcriptome and metabolome analyses revealed a few gene-metabolite networks related to various pathways, including linoleic acid metabolism and amino acid metabolism that are important for melatonin-mediated salt tolerance. The data presented herein may be useful for further elucidating the multiple regulatory roles of melatonin in plant responses to abiotic stresses.
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Affiliation(s)
- Ziyan Xie
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Juan Wang
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Wensheng Wang
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, China
- College of Agronomy, Anhui Agricultural University, Hefei, China
| | - Yanru Wang
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jianlong Xu
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Zhikang Li
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, China
- College of Agronomy, Anhui Agricultural University, Hefei, China
| | - Xiuqin Zhao
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, China
- *Correspondence: Xiuqin Zhao,
| | - Binying Fu
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, China
- Binying Fu,
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34
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Genome-wide identification of and functional insights into the late embryogenesis abundant (LEA) gene family in bread wheat (Triticum aestivum). Sci Rep 2019; 9:13375. [PMID: 31527624 PMCID: PMC6746774 DOI: 10.1038/s41598-019-49759-w] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 08/29/2019] [Indexed: 12/20/2022] Open
Abstract
Late embryogenesis abundant (LEA) proteins are involved in the responses and adaptation of plants to various abiotic stresses, including dehydration, salinity, high temperature, and cold. Here, we report the first comprehensive survey of the LEA gene family in “Chinese Spring” wheat (Triticum aestivum). A total of 179 TaLEA genes were identified in T. aestivum and classified into eight groups. All TaLEA genes harbored the LEA conserved motif and had few introns. TaLEA genes belonging to the same group exhibited similar gene structures and chromosomal locations. Our results revealed that most TaLEA genes contained abscisic acid (ABA)-responsive elements (ABREs) and various cis-acting elements associated with the stress response in the promoter region and were induced under ABA and abiotic stress treatments. In addition, 8 genes representing each group were introduced into E. coli and yeast to investigate the protective function of TaLEAs under heat and salt stress. TaLEAs enhanced the tolerance of E. coli and yeast to salt and heat, indicating that these proteins have protective functions in host cells under stress conditions. These results increase our understanding of LEA genes and provide robust candidate genes for future functional investigations aimed at improving the stress tolerance of wheat.
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35
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Identification, characterization and expression analysis of lineage-specific genes within Triticeae. Genomics 2019; 112:1343-1350. [PMID: 31401233 DOI: 10.1016/j.ygeno.2019.08.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 08/04/2019] [Accepted: 08/07/2019] [Indexed: 12/11/2022]
Abstract
Lineage-specific genes (LSGs) are a set of genes in a given taxon without significant sequence similarity to genes and intergenic sequences of other taxa and are functional. The tribe Triticeae mainly includes species of different ploidy levels, such as staple food crops wheat (Triticum aestivum L.) and barley (Hordeum vulgare L.). This study is aimed at mining and characterizing the Triticeae-specific genes (TSGs) using expressed sequence data of wheat. A total of 3812 TSGs was identified and they were generally characterized by smaller size, fewer exons, shorter open reading frames and lower expression levels. Most TSGs were expressed with tissue preference and many of them were predominantly expressed in reproduction related tissues, especially in young stamen. Nearly one third of the TSGs were stress-responsive and inducible under abiotic and/or biotic stresses. A co-expression-based annotation supported the relevance of some TSGs with reproduction and stress responses, indicating their potential economic importance.
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36
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Priya M, Dhanker OP, Siddique KHM, HanumanthaRao B, Nair RM, Pandey S, Singh S, Varshney RK, Prasad PVV, Nayyar H. Drought and heat stress-related proteins: an update about their functional relevance in imparting stress tolerance in agricultural crops. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2019; 132:1607-1638. [PMID: 30941464 DOI: 10.1007/s00122-019-03331-2] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2018] [Accepted: 03/19/2019] [Indexed: 05/21/2023]
Abstract
We describe here the recent developments about the involvement of diverse stress-related proteins in sensing, signaling, and defending the cells in plants in response to drought or/and heat stress. In the current era of global climate drift, plant growth and productivity are often limited by various environmental stresses, especially drought and heat. Adaptation to abiotic stress is a multigenic process involving maintenance of homeostasis for proper survival under adverse environment. It has been widely observed that a series of proteins respond to heat and drought conditions at both transcriptional and translational levels. The proteins are involved in various signaling events, act as key transcriptional activators and saviors of plants under extreme environments. A detailed insight about the functional aspects of diverse stress-responsive proteins may assist in unraveling various stress resilience mechanisms in plants. Furthermore, by identifying the metabolic proteins associated with drought and heat tolerance, tolerant varieties can be produced through transgenic/recombinant technologies. A large number of regulatory and functional stress-associated proteins are reported to participate in response to heat and drought stresses, such as protein kinases, phosphatases, transcription factors, and late embryogenesis abundant proteins, dehydrins, osmotins, and heat shock proteins, which may be similar or unique to stress treatments. Few studies have revealed that cellular response to combined drought and heat stresses is distinctive, compared to their individual treatments. In this review, we would mainly focus on the new developments about various stress sensors and receptors, transcription factors, chaperones, and stress-associated proteins involved in drought or/and heat stresses, and their possible role in augmenting stress tolerance in crops.
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Affiliation(s)
- Manu Priya
- Department of Botany, Panjab University, Chandigarh, India
| | - Om P Dhanker
- Stockbridge School of Agriculture, University of Massachusetts Amherst, Amherst, MA, 01003, USA
| | - Kadambot H M Siddique
- The UWA Institute of Agriculture, University of Western Australia, Perth, WA, Australia
| | | | | | - Sarita Pandey
- Center of Excellence in Genomics and Systems Biology, International Crops Research Institute for the Semi-Arid Tropics, Patancheru, Hyderabad, Telangana, 502324, India
| | - Sadhana Singh
- Center of Excellence in Genomics and Systems Biology, International Crops Research Institute for the Semi-Arid Tropics, Patancheru, Hyderabad, Telangana, 502324, India
| | - Rajeev K Varshney
- Center of Excellence in Genomics and Systems Biology, International Crops Research Institute for the Semi-Arid Tropics, Patancheru, Hyderabad, Telangana, 502324, India
| | - P V Vara Prasad
- Sustainable Intensification Innovation Lab, Kansas State University, Manhattan, KS, USA
| | - Harsh Nayyar
- Department of Botany, Panjab University, Chandigarh, India.
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37
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Chen Y, Li C, Zhang B, Yi J, Yang Y, Kong C, Lei C, Gong M. The Role of the Late Embryogenesis-Abundant (LEA) Protein Family in Development and the Abiotic Stress Response: A Comprehensive Expression Analysis of Potato ( Solanum Tuberosum). Genes (Basel) 2019; 10:genes10020148. [PMID: 30781418 PMCID: PMC6410179 DOI: 10.3390/genes10020148] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 02/10/2019] [Accepted: 02/11/2019] [Indexed: 11/16/2022] Open
Abstract
Late embryogenesis-abundant (LEA) proteins are a large and highly diverse family believed to function in normal plant growth and development, and in protecting cells from abiotic stress. This study presents a characterisation of 74 Solanum tuberosum LEA (StLEA) proteins belonging to nine groups. StLEA genes have few introns (≤2) and are distributed on all chromosomes, occurring as gene clusters on chromosomes 1, 2, and 10. All four StASR (StLEA7 group) genes were concentrated on chromosome 4, suggesting their evolutionary conservation on one chromosome. Expression profiles of StLEA genes, in different tissues and in response to hormone and stress treatments, indicated that 71 StLEA genes had differential expression levels, of which 68 StLEA genes were differentially expressed in response to hormones and stress exposure in the potato. Continuous high expression of StASR-2, StLEA3-3, StDHN-3, StLEA2-29, and StLEA2-14 in different tissues indicated their contribution to plant development processes. StLEA2-14, StLEA2-31, StLEA3-3, StASR-1, and StDHN-1 were upregulated by six abiotic stresses, showing their tolerance to a wide spectrum of environmental stresses. Expression analysis of 17 selected StLEA genes in response to drought, salt, heavy metal, heat, and cold treatments by quantitative real-time polymerase chain reaction indicated that StLEA proteins may be involved in distinct signalling pathways. Taken together, StLEA3, StDHN, and StASR subgroup genes may be excellent resources for potato defence against environmental stresses. These results provide valuable information and robust candidate genes for future functional analysis aimed at improving the stress tolerance of the potato.
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Affiliation(s)
- Yongkun Chen
- School of Life Science, Yunnan Normal University, Kunming 650550, China.
| | - Canhui Li
- Joint Academy of Potato Science, Yunnan Normal University, Kunming 650550, China.
| | - Bo Zhang
- Joint Academy of Potato Science, Yunnan Normal University, Kunming 650550, China.
| | - Jing Yi
- School of Life Science, Yunnan Normal University, Kunming 650550, China.
| | - Yu Yang
- School of Life Science, Yunnan Normal University, Kunming 650550, China.
| | - Chunyan Kong
- School of Life Science, Yunnan Normal University, Kunming 650550, China.
| | - Chunxia Lei
- School of Life Science, Yunnan Normal University, Kunming 650550, China.
| | - Ming Gong
- School of Life Science, Yunnan Normal University, Kunming 650550, China.
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38
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Wang W, Gao T, Chen J, Yang J, Huang H, Yu Y. The late embryogenesis abundant gene family in tea plant (Camellia sinensis): Genome-wide characterization and expression analysis in response to cold and dehydration stress. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 135:277-286. [PMID: 30593000 DOI: 10.1016/j.plaphy.2018.12.009] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2018] [Revised: 12/14/2018] [Accepted: 12/15/2018] [Indexed: 05/20/2023]
Abstract
Late embryogenesis abundant (LEA) proteins are a large and highly diverse family of polypeptides that play important roles in plant growth, development and stress responses. At present, LEA gene families have been identified and systematically characterized in many plant species. However, the LEA gene family in tea plant has not been revealed, and the biological functions of the members of this family remain unknown. In this study, 33 CsLEA genes were identified from tea plant via a genome-wide study, and they were clustered into seven groups according to analyses of their phylogenetic relationships, gene structures and protein conserved motifs. In addition, expression analysis revealed that the CsLEA genes were specifically expressed in one or more tissues and significantly induced under cold and dehydration stresses, implying that CsLEA genes play important roles in tea plant growth, development and response to cold and dehydration stresses. Furthermore, a potential transcriptional regulatory network, including DREB/CBF, MYB, bZIP, bHLH, BPC and other transcription factors, is directly associated with the expression of CsLEA genes, which may be ubiquitous and important in the above mentioned processes. This study could help to increase our understanding of CsLEA proteins and their contributions to stress tolerance in tea plant.
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Affiliation(s)
- Weidong Wang
- College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Tong Gao
- College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Jiangfei Chen
- College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Jiankun Yang
- College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Huiyu Huang
- College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Youben Yu
- College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China.
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Vishal B, Krishnamurthy P, Ramamoorthy R, Kumar PP. OsTPS8 controls yield-related traits and confers salt stress tolerance in rice by enhancing suberin deposition. THE NEW PHYTOLOGIST 2019; 221:1369-1386. [PMID: 30289560 DOI: 10.1111/nph.15464] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 08/26/2018] [Indexed: 05/11/2023]
Abstract
Class I TREHALOSE-PHOSPHATE-SYNTHASE (TPS) genes affect salinity tolerance and plant development. However, the function of class IITPS genes and their underlying mechanisms of action are unknown. We report the identification and functional analysis of a rice class IITPS gene (OsTPS8). The ostps8 mutant was characterised by GC-MS analysis, an abscisic acid (ABA) sensitivity test and by generating transgenic lines. To identify the underlying mechanism, gene expression analyses, genetic complementation and examination of suberin deposition in the roots were conducted. The ostps8 mutant showed salt sensitivity, ABA sensitivity and altered agronomic traits compared to the wild-type (WT), which could be rescued upon complementation. The dsRNAi line phenocopied the mutant, while the overexpression lines exhibited enhanced salt tolerance. The ostps8 mutant showed significantly reduced soluble sugars, Casparian bands and suberin deposition in the roots compared to the WT and overexpression lines. The mutant also showed downregulation of SAPKs (rice SnRK2s) and ABA-responsive genes. Furthermore, ostps8pUBI::SAPK9 rescued the salt-sensitive phenotype of ostps8. Our results suggest that OsTPS8 may regulate suberin deposition in rice through ABA signalling. Additionally, SAPK9-mediated regulation of altered ABA-responsive genes helps to confer salinity tolerance. Overexpression of OsTPS8 was adequate to confer enhanced salinity tolerance without any yield penalty, suggesting its usefulness in rice genetic improvement.
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Affiliation(s)
- Bhushan Vishal
- Department of Biological Sciences, Faculty of Science, National University of Singapore, Singapore City, 117543, Singapore
| | - Pannaga Krishnamurthy
- Department of Biological Sciences, Faculty of Science, National University of Singapore, Singapore City, 117543, Singapore
| | - Rengasamy Ramamoorthy
- Department of Biological Sciences, Faculty of Science, National University of Singapore, Singapore City, 117543, Singapore
| | - Prakash P Kumar
- Department of Biological Sciences, Faculty of Science, National University of Singapore, Singapore City, 117543, Singapore
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Overexpression of Rice Rab7 Gene Improves Drought and Heat Tolerance and Increases Grain Yield in Rice ( Oryza sativa L.). Genes (Basel) 2019; 10:genes10010056. [PMID: 30658457 PMCID: PMC6357162 DOI: 10.3390/genes10010056] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 12/21/2018] [Accepted: 12/28/2018] [Indexed: 12/15/2022] Open
Abstract
Rab family proteins play a crucial role in plant developmental processes and tolerance to environmental stresses. The current study investigated whether rice Rab7 (OsRab7) overexpression could improve rice tolerance to drought and heat stress conditions. The OsRab7 gene was cloned and transformed into rice plants. The survival rate, relative water content, chlorophyll content, gas-exchange characteristics, soluble protein content, soluble sugar content, proline content, and activities of antioxidant enzymes (CAT, SOD, APX, POD) of the transgenic rice lines were significantly higher than that of the wild-type. In contrast, the levels of hydrogen peroxide, electrolyte leakage, and malondialdehyde of the transgenic lines were significantly reduced when compared to wild-type. Furthermore, the expression of four genes encoding reactive oxygen species (ROS)-scavenging enzymes (OsCATA, OsCATB, OsAPX2, OsSOD-Cu/Zn) and eight genes conferring abiotic stress tolerance (OsLEA3, OsRD29A, OsSNAC1, OsSNAC2, OsDREB2A, OsDREB2B, OsRAB16A, OsRAB16C) was significantly up-regulated in the transformed rice lines as compared to their expression in wild-type. OsRab7 overexpression also increased grain yield in rice. Taken together, the current study indicates that the OsRab7 gene improves grain yield and enhances drought and heat tolerance in transgenic rice by modulating osmolytes, antioxidants and abiotic stress-responsive genes expression. Therefore, OsRab7 gene could be exploited as a promising candidate for improving rice grain yield and stress tolerance.
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Ge Y, Han J, Zhou G, Xu Y, Ding Y, Shi M, Guo C, Wu G. Silencing of miR156 confers enhanced resistance to brown planthopper in rice. PLANTA 2018; 248:813-826. [PMID: 29934776 DOI: 10.1007/s00425-018-2942-6] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 06/01/2018] [Indexed: 05/24/2023]
Abstract
Silencing of miR156 in rice confers enhanced resistance to brown planthopper through reducing JA and JA-Ile biosynthesis. Rice brown planthopper (BPH, Nilaparvata lugens Stål) threatens the sustainability of rice production and global food security. Due to the rapid adaptation of BPH to current germplasms in rice, development of novel types of resistant germplasms becomes increasingly important. Plant ontogenetic defense against pathogen and herbivores offers a broad spectrum and durable resistance, and has been experimentally tested in many plants; however, the underlying molecular mechanism remains unclear. miR156 is the master regulator of ontogeny in plants; modulation of miR156 is, therefore, expected to cause corresponding changes in BPH resistance. To test this hypothesis, we silenced miR156 using a target mimicry method in rice, and analyzed the resistance of miR156-silenced plants (MIM156) to BPH. MIM156 plants exhibited enhanced resistance to BPH based on analyses of honeydew excretion, nymph survival, fecundity of BPH, and the survival ratio of rice plants after BPH infestation. Molecular analysis indicated that the expression of MPK3, MPK6, and WRKY70, three genes involved in BPH resistance and jasmonic acid (JA) signaling, was altered in MIM156 plants. The JA and bioactive jasmonoyl-isoleucine levels and the expression of genes involved in JA biosynthesis were significantly reduced in MIM156 plants. Restoration of JA level by exogenous application increased the number of BPH feeding on MIM156 plants and reduced its resistance to BPH. Our findings suggest that miR156 negatively regulates BPH resistance by increasing JA level in rice; therefore, modulation of miR156-SPLs' pathway may offer a promising way to breed rice varieties with enhanced resistance against BPH and elite agronomically important traits.
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Affiliation(s)
- Yafei Ge
- State Key Laboratory of Subtropical Silviculture, School of Agriculture and Food Sciences, Zhejiang Agriculture and Forestry University, Hangzhou, 311300, China
| | - Junyou Han
- College of Plant Science, Jilin University, Changchun, 130062, China
| | - Guoxin Zhou
- State Key Laboratory of Subtropical Silviculture, School of Agriculture and Food Sciences, Zhejiang Agriculture and Forestry University, Hangzhou, 311300, China
| | - Yunmin Xu
- State Key Laboratory of Subtropical Silviculture, School of Agriculture and Food Sciences, Zhejiang Agriculture and Forestry University, Hangzhou, 311300, China
| | - Yue Ding
- State Key Laboratory of Subtropical Silviculture, School of Agriculture and Food Sciences, Zhejiang Agriculture and Forestry University, Hangzhou, 311300, China
| | - Min Shi
- State Key Laboratory of Subtropical Silviculture, School of Agriculture and Food Sciences, Zhejiang Agriculture and Forestry University, Hangzhou, 311300, China
| | - Changkui Guo
- State Key Laboratory of Subtropical Silviculture, School of Agriculture and Food Sciences, Zhejiang Agriculture and Forestry University, Hangzhou, 311300, China.
| | - Gang Wu
- State Key Laboratory of Subtropical Silviculture, School of Agriculture and Food Sciences, Zhejiang Agriculture and Forestry University, Hangzhou, 311300, China.
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Dash PK, Rai R, Rai V, Pasupalak S. Drought Induced Signaling in Rice: Delineating Canonical and Non-canonical Pathways. Front Chem 2018; 6:264. [PMID: 30258837 PMCID: PMC6143666 DOI: 10.3389/fchem.2018.00264] [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: 08/31/2017] [Accepted: 06/12/2018] [Indexed: 11/13/2022] Open
Abstract
Drought induced stress is often a bottleneck of agricultural crop production. Invariably, field crops across all agro-ecological regions succumb to it with an yield penalty. Drought massively affects the growth and harvestable yield in crops and has become an imminent problem necessitating breeding of tolerant crops. It induces myriad changes of biochemical, molecular, and physiological nature that manifest into aberrant plant morphology. The response to drought in plants incites a signaling cascade that involves perception and translation of drought signal leading to concomitant modulation of gene expression and de novo osmolyte synthesis. The intricate patterns of expression of these genes vary from early induction to late responsive genes. While one class of genes codes for products imparting osmotolerance and protection to plants, the second class predominantly modulates target gene expression by an intricate signal transduction mechanism. This review summarizes both canonical and non-canonical cascades of drought stress response in plants, delineating the mechanism in rice (Oryza sativa) and emphasizes hydropenia induced lipid signaling.
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Affiliation(s)
- Prasanta K. Dash
- ICAR-NRC on Plant Biotechnology, Pusa Institute, New Delhi, India
| | - Rhitu Rai
- ICAR-NRC on Plant Biotechnology, Pusa Institute, New Delhi, India
| | - Vandna Rai
- ICAR-NRC on Plant Biotechnology, Pusa Institute, New Delhi, India
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Xiang DJ, Man LL, Zhang CL, Peng-Liu, Li ZG, Zheng GC. A new Em-like protein from Lactuca sativa, LsEm1, enhances drought and salt stress tolerance in Escherichia coli and rice. PROTOPLASMA 2018; 255:1089-1106. [PMID: 29417232 DOI: 10.1007/s00709-018-1207-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 01/10/2018] [Indexed: 06/08/2023]
Abstract
Late embryogenesis abundant (LEA) proteins are closely related to abiotic stress tolerance of plants. In the present study, we identified a novel Em-like gene from lettuce, termed LsEm1, which could be classified into group 1 LEA proteins, and shared high homology with Cynara cardunculus Em protein. The LsEm1 protein contained three different 20-mer conserved elements (C-element, N-element, and M-element) in the C-termini, N-termini, and middle-region, respectively. The LsEm1 mRNAs were accumulated in all examined tissues during the flowering and mature stages, with a little accumulation in the roots and leaves during the seedling stage. Furthermore, the LsEm1 gene was also expressed in response to salt, dehydration, abscisic acid (ABA), and cold stresses in young seedlings. The LsEm1 protein could effectively reduce damage to the lactate dehydrogenase (LDH) and protect LDH activity under desiccation and salt treatments. The Escherichia coli cells overexpressing the LsEm1 gene showed a growth advantage over the control under drought and salt stresses. Moreover, LsEm1-overexpressing rice seeds were relatively sensitive to exogenously applied ABA, suggesting that the LsEm1 gene might depend on an ABA signaling pathway in response to environmental stresses. The transgenic rice plants overexpressing the LsEm1 gene showed higher tolerance to drought and salt stresses than did wild-type (WT) plants on the basis of the germination performances, higher survival rates, higher chlorophyll content, more accumulation of soluble sugar, lower relative electrolyte leakage, and higher superoxide dismutase activity under stress conditions. The LsEm1-overexpressing rice lines also showed less yield loss compared with WT rice under stress conditions. Furthermore, the LsEm1 gene had a positive effect on the expression of the OsCDPK9, OsCDPK13, OsCDPK15, OsCDPK25, and rab21 (rab16a) genes in transgenic rice under drought and salt stress conditions, implying that overexpression of these genes may be involved in the enhanced drought and salt tolerance of transgenic rice. Thus, this work paves the way for improvement in tolerance of crops by genetic engineering breeding.
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Affiliation(s)
- Dian-Jun Xiang
- College of Agriculture, Inner Mongolia University for Nationalities, Tongliao, 028042, China
| | - Li-Li Man
- College of Life Science, Inner Mongolia University for Nationalities, Tongliao, 028042, China.
| | - Chun-Lan Zhang
- College of Life Science, Inner Mongolia University for Nationalities, Tongliao, 028042, China
| | - Peng-Liu
- College of Agriculture, Inner Mongolia University for Nationalities, Tongliao, 028042, China
| | - Zhi-Gang Li
- College of Agriculture, Inner Mongolia University for Nationalities, Tongliao, 028042, China
| | - Gen-Chang Zheng
- College of Agriculture, Inner Mongolia University for Nationalities, Tongliao, 028042, China
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Gianinetti A, Finocchiaro F, Bagnaresi P, Zechini A, Faccioli P, Cattivelli L, Valè G, Biselli C. Seed Dormancy Involves a Transcriptional Program That Supports Early Plastid Functionality during Imbibition. PLANTS 2018; 7:plants7020035. [PMID: 29671830 PMCID: PMC6026906 DOI: 10.3390/plants7020035] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 04/05/2018] [Accepted: 04/11/2018] [Indexed: 01/18/2023]
Abstract
Red rice fully dormant seeds do not germinate even under favorable germination conditions. In several species, including rice, seed dormancy can be removed by dry-afterripening (warm storage); thus, dormant and non-dormant seeds can be compared for the same genotype. A weedy (red) rice genotype with strong dormancy was used for mRNA expression profiling, by RNA-Seq, of dormant and non-dormant dehulled caryopses (here addressed as seeds) at two temperatures (30 °C and 10 °C) and two durations of incubation in water (8 h and 8 days). Aim of the study was to highlight the differences in the transcriptome of dormant and non-dormant imbibed seeds. Transcript data suggested important differences between these seeds (at least, as inferred by expression-based metabolism reconstruction): dry-afterripening seems to impose a respiratory impairment onto non-dormant seeds, thus glycolysis is deduced to be preferentially directed to alcoholic fermentation in non-dormant seeds but to alanine production in dormant ones; phosphoenolpyruvate carboxykinase, pyruvate phosphate dikinase and alanine aminotransferase pathways appear to have an important gluconeogenetic role associated with the restoration of plastid functions in the dormant seed following imbibition; correspondingly, co-expression analysis pointed out a commitment to guarantee plastid functionality in dormant seeds. At 8 h of imbibition, as inferred by gene expression, dormant seeds appear to preferentially use carbon and nitrogen resources for biosynthetic processes in the plastid, including starch and proanthocyanidins accumulation. Chromatin modification appears to be a possible mechanism involved in the transition from dormancy to germination. Non-dormant seeds show higher expression of genes related to cell wall modification, suggesting they prepare for acrospire/radicle elongation.
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Affiliation(s)
- Alberto Gianinetti
- Council for Agricultural Research and Economics-Research Centre for Genomics and Bioinformatics, via S. Protaso 302, 29017 Fiorenzuola d'Arda (PC), Italy.
| | - Franca Finocchiaro
- Council for Agricultural Research and Economics-Research Centre for Genomics and Bioinformatics, via S. Protaso 302, 29017 Fiorenzuola d'Arda (PC), Italy.
| | - Paolo Bagnaresi
- Council for Agricultural Research and Economics-Research Centre for Genomics and Bioinformatics, via S. Protaso 302, 29017 Fiorenzuola d'Arda (PC), Italy.
| | - Antonella Zechini
- Council for Agricultural Research and Economics-Research Centre for Genomics and Bioinformatics, via S. Protaso 302, 29017 Fiorenzuola d'Arda (PC), Italy.
| | - Primetta Faccioli
- Council for Agricultural Research and Economics-Research Centre for Genomics and Bioinformatics, via S. Protaso 302, 29017 Fiorenzuola d'Arda (PC), Italy.
| | - Luigi Cattivelli
- Council for Agricultural Research and Economics-Research Centre for Genomics and Bioinformatics, via S. Protaso 302, 29017 Fiorenzuola d'Arda (PC), Italy.
| | - Giampiero Valè
- Council for Agricultural Research and Economics-Research Centre for Genomics and Bioinformatics, via S. Protaso 302, 29017 Fiorenzuola d'Arda (PC), Italy.
- Council for Agricultural Research and Economics-Research Centre for Cereal and Industrial Crops, s.s. 11 to Torino, km 2.5, 13100 Vercelli, Italy.
| | - Chiara Biselli
- Council for Agricultural Research and Economics-Research Centre for Genomics and Bioinformatics, via S. Protaso 302, 29017 Fiorenzuola d'Arda (PC), Italy.
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Janis B, Uversky VN, Menze MA. Potential functions of LEA proteins from the brine shrimp Artemia franciscana - anhydrobiosis meets bioinformatics. J Biomol Struct Dyn 2017; 36:3291-3309. [PMID: 28971739 DOI: 10.1080/07391102.2017.1387177] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Late embryogenesis abundant (LEA) proteins are a large group of anhydrobiosis-associated intrinsically disordered proteins, which are commonly found in plants and some animals. The brine shrimp Artemia franciscana is the only known animal that expresses LEA proteins from three, and not only one, different groups in its anhydrobiotic life stage. The reason for the higher complexity in the A. franciscana LEA proteome (LEAome), compared with other anhydrobiotic animals, remains mostly unknown. To address this issue, we have employed a suite of bioinformatics tools to evaluate the disorder status of the Artemia LEAome and to analyze the roles of intrinsic disorder in functioning of brine shrimp LEA proteins. We show here that A. franciscana LEA proteins from different groups are more similar to each other than one originally expected, while functional differences among members of group three are possibly larger than commonly anticipated. Our data show that although these proteins are characterized by a large variety of forms and possible functions, as a general strategy, A. franciscana utilizes glassy matrix forming LEAs concurrently with proteins that more readily interact with binding partners. It is likely that the function(s) of both types, the matrix-forming and partner-binding LEA proteins, are regulated by changing water availability during desiccation.
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Affiliation(s)
- Brett Janis
- a Department of Biology , University of Louisville , Louisville 40292 , KY , USA
| | - Vladimir N Uversky
- b Department of Molecular Medicine and USF Health Byrd Alzheimer's Research Institute, Morsani College of Medicine , University of South Florida , Tampa 33612 , FL , USA.,c Institute for Biological Instrumentation , Russian Academy of Sciences , Moscow Region, Pushchino 142290 , Russia
| | - Michael A Menze
- a Department of Biology , University of Louisville , Louisville 40292 , KY , USA
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Seed priming with spermine and spermidine regulates the expression of diverse groups of abiotic stress-responsive genes during salinity stress in the seedlings of indica rice varieties. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.plgene.2017.04.004] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Paul S, Roychoudhury A. Effect of seed priming with spermine/spermidine on transcriptional regulation of stress-responsive genes in salt-stressed seedlings of an aromatic rice cultivar. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.plgene.2017.05.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Wu Q, Hu Y, Sprague SA, Kakeshpour T, Park J, Nakata PA, Cheng N, Hirschi KD, White FF, Park S. Expression of a monothiol glutaredoxin, AtGRXS17, in tomato (Solanum lycopersicum) enhances drought tolerance. Biochem Biophys Res Commun 2017; 491:1034-1039. [PMID: 28780355 DOI: 10.1016/j.bbrc.2017.08.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 08/01/2017] [Indexed: 11/19/2022]
Abstract
Abiotic stresses are a major factor limiting crop growth and productivity. The Arabidopsis thaliana glutaredoxin S17 (AtGRXS17) gene has conserved functions in plant tolerance to heat and chilling stress in Arabidopsis and, when expressed ectopically, in tomato. Here, we report that ectopic expression of AtGRXS17 in tomato also enhanced tolerance to drought and oxidative stress. AtGRXS17-expressing tomato plants contained twice the shoot water content compared to wild-type plants under water limiting conditions. This enhanced drought tolerance correlated with a higher maximal photosynthetic efficiency of photosystem II (Fv/Fm). Ectopic AtGRXS17-expression was concomitant with the expression of Solanum lycopersicum catalase 1 (SlCAT1) and mitigated defects in the growth of primary roots in response to methyl viologen exposure. In addition, AtGRXS17 expression was found to prolong elevated expression levels of the Solanum lycopersicum ABA-responsive element binding protein 1 (SlAREB1) during drought stress. The findings demonstrate that expression of AtGRXS17 can simultaneously improve the tolerance of tomato, and possibly other agriculturally important crops, to drought, heat, and chilling stresses.
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Affiliation(s)
- Qingyu Wu
- Department of Horticulture and Natural Resources, Kansas State University, Manhattan, KS, 66506, USA
| | - Ying Hu
- Department of Horticulture and Natural Resources, Kansas State University, Manhattan, KS, 66506, USA
| | - Stuart A Sprague
- Department of Horticulture and Natural Resources, Kansas State University, Manhattan, KS, 66506, USA
| | - Tayebeh Kakeshpour
- Department of Horticulture and Natural Resources, Kansas State University, Manhattan, KS, 66506, USA
| | - Jungeun Park
- Department of Horticulture and Natural Resources, Kansas State University, Manhattan, KS, 66506, USA
| | - Paul A Nakata
- United States Department of Agriculture/Agricultural Research Service, Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Ninghui Cheng
- United States Department of Agriculture/Agricultural Research Service, Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Kendal D Hirschi
- United States Department of Agriculture/Agricultural Research Service, Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Frank F White
- Department of Plant Pathology, University of Florida, Gainesville, FL, 32611, USA
| | - Sunghun Park
- Department of Horticulture and Natural Resources, Kansas State University, Manhattan, KS, 66506, USA.
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Yin M, Wang Y, Zhang L, Li J, Quan W, Yang L, Wang Q, Chan Z. The Arabidopsis Cys2/His2 zinc finger transcription factor ZAT18 is a positive regulator of plant tolerance to drought stress. JOURNAL OF EXPERIMENTAL BOTANY 2017; 68:2991-3005. [PMID: 28586434 PMCID: PMC5853917 DOI: 10.1093/jxb/erx157] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Environmental stress poses a global threat to plant growth and reproduction, especially drought stress. Zinc finger proteins comprise a family of transcription factors that play essential roles in response to various abiotic stresses. Here, we found that ZAT18 (At3g53600), a nuclear C2H2 zinc finger protein, was transcriptionally induced by dehydration stress. Overexpression (OE) of ZAT18 in Arabidopsis improved drought tolerance while mutation of ZAT18 resulted in decreased plant tolerance to drought stress. ZAT18 was preferentially expressed in stems, siliques, and vegetative rosette leaves. Subcellular location results revealed that ZAT18 protein was predominantly localized in the nucleus. ZAT18 OE plants exhibited less leaf water loss, lower content of reactive oxygen species (ROS), higher leaf water content, and higher antioxidant enzyme activities after drought treatment when compared with the wild type (WT). RNA sequencing analysis showed that 423 and 561 genes were transcriptionally modulated by the ZAT18 transgene before and after drought treatment, respectively. Pathway enrichment analysis indicated that hormone metabolism, stress, and signaling were over-represented in ZAT18 OE lines. Several stress-responsive genes including COR47, ERD7, LEA6, and RAS1, and hormone signaling transduction-related genes including JAZ7 and PYL5 were identified as putative target genes of ZAT18. Taken together, ZAT18 functions as a positive regulator and plays a crucial role in the plant response to drought stress.
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Affiliation(s)
- Mingzhu Yin
- Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden/Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan, Hubei, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yanping Wang
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Lihua Zhang
- Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden/Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan, Hubei, China
| | - Jinzhu Li
- Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden/Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan, Hubei, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Wenli Quan
- Key Laboratory for Quality Control of Characteristic Fruits and Vegetables of Hubei Province, College of Life Science and Technology, Hubei Engineering University, Xiaogan, Hubei, China
| | - Li Yang
- Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden/Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan, Hubei, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Qingfeng Wang
- Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden/Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan, Hubei, China
- Correspondence: or
| | - Zhulong Chan
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, Hubei, China
- Key Laboratory for Quality Control of Characteristic Fruits and Vegetables of Hubei Province, College of Life Science and Technology, Hubei Engineering University, Xiaogan, Hubei, China
- Correspondence: or
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