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Li T, Zhang S, Li Y, Zhang L, Song W, Chen C, Ruan W. Simultaneous Promotion of Salt Tolerance and Phenolic Acid Biosynthesis in Salvia miltiorrhiza via Overexpression of Arabidopsis MYB12. Int J Mol Sci 2023; 24:15506. [PMID: 37958490 PMCID: PMC10648190 DOI: 10.3390/ijms242115506] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 10/06/2023] [Accepted: 10/17/2023] [Indexed: 11/15/2023] Open
Abstract
Transcription factors play crucial roles in regulating plant abiotic stress responses and physiological metabolic processes, which can be used for plant molecular breeding. In this study, an R2R3-MYB transcription factor gene, AtMYB12, was isolated from Arabidopsis thaliana and introduced into Salvia miltiorrhiza under the regulation of the CaMV35S promoter. The ectopic expression of AtMYB12 resulted in improved salt tolerance in S. miltiorrhiza; transgenic plants showed a more resistant phenotype under high-salinity conditions. Physiological experiments showed that transgenic plants exhibited higher chlorophyll contents, and decreased electrolyte leakage and O2- and H2O2 accumulation when subjected to salt stress. Moreover, the activity of reactive oxygen species (ROS)-scavenging enzymes was enhanced in S. miltiorrhiza via the overexpression of AtMYB12, and transgenic plants showed higher superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD) activities compared with those of the wild type (WT) under salt stress, coupled with lower malondialdehyde (MDA) levels. In addition, the amount of salvianolic acid B was significantly elevated in all AtMYB12 transgenic hair roots and transgenic plants, and qRT-PCR analysis revealed that most genes in the phenolic acid biosynthetic pathway were up-regulated. In conclusion, these results demonstrated that AtMYB12 can significantly improve the resistance of plants to salt stress and promote the biosynthesis of phenolic acids by regulating genes involved in the biosynthetic pathway.
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Affiliation(s)
| | | | | | | | | | - Chengbin Chen
- College of Life Sciences, Nankai University, Tianjin 300071, China; (T.L.); (S.Z.); (Y.L.); (L.Z.); (W.S.)
| | - Weibin Ruan
- College of Life Sciences, Nankai University, Tianjin 300071, China; (T.L.); (S.Z.); (Y.L.); (L.Z.); (W.S.)
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Dabravolski SA, Isayenkov SV. The regulation of plant cell wall organisation under salt stress. FRONTIERS IN PLANT SCIENCE 2023; 14:1118313. [PMID: 36968390 PMCID: PMC10036381 DOI: 10.3389/fpls.2023.1118313] [Citation(s) in RCA: 26] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 02/24/2023] [Indexed: 06/18/2023]
Abstract
Plant cell wall biosynthesis is a complex and tightly regulated process. The composition and the structure of the cell wall should have a certain level of plasticity to ensure dynamic changes upon encountering environmental stresses or to fulfil the demand of the rapidly growing cells. The status of the cell wall is constantly monitored to facilitate optimal growth through the activation of appropriate stress response mechanisms. Salt stress can severely damage plant cell walls and disrupt the normal growth and development of plants, greatly reducing productivity and yield. Plants respond to salt stress and cope with the resulting damage by altering the synthesis and deposition of the main cell wall components to prevent water loss and decrease the transport of surplus ions into the plant. Such cell wall modifications affect biosynthesis and deposition of the main cell wall components: cellulose, pectins, hemicelluloses, lignin, and suberin. In this review, we highlight the roles of cell wall components in salt stress tolerance and the regulatory mechanisms underlying their maintenance under salt stress conditions.
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Affiliation(s)
- Siarhei A. Dabravolski
- Department of Biotechnology Engineering, Braude Academic College of Engineering, Karmiel, Israel
| | - Stanislav V. Isayenkov
- Department of Plant Food Products and Biofortification, Institute of Food Biotechnology and Genomics, National Academy of Science (NAS) of Ukraine, Kyiv, Ukraine
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Qi C, Dong D, Li Y, Wang X, Guo L, Liu L, Dong X, Li X, Yuan X, Ren S, Zhang N, Guo YD. Heat shock-induced cold acclimation in cucumber through CsHSFA1d-activated JA biosynthesis and signaling. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 111:85-102. [PMID: 35436390 DOI: 10.1111/tpj.15780] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 04/12/2022] [Accepted: 04/15/2022] [Indexed: 06/14/2023]
Abstract
Cucumber (Cucumis sativus) originated in tropical areas and is very sensitive to low temperatures. Cold acclimation is a universal strategy that improves plant resistance to cold stress. In this study, we report that heat shock induces cold acclimation in cucumber seedlings, via a process involving the heat-shock transcription factor HSFA1d. CsHSFA1d expression was improved by both heat shock and cold treatment. Moreover, CsHSFA1d transcripts accumulated more under cold treatment after a heat-shock pre-treatment than with either heat shock or cold treatment alone. After exposure to cold, cucumber lines overexpressing CsHSFA1d displayed stronger tolerance for cold stress than the wild type, whereas CsHSFA1d knockdown lines obtained by RNA interference were more sensitive to cold stress. Furthermore, both the overexpression of CsHSFA1d and heat-shock pre-treatment increased the endogenous jasmonic acid (JA) content in cucumber seedlings after cold treatment. Exogenous application of JA rescued the cold-sensitive phenotype of CsHSFA1d knockdown lines, underscoring that JA biosynthesis is key for CsHSFA1d-mediated cold tolerance. Higher JA content is likely to lead to the degradation of CsJAZ5, a repressor protein of the JA pathway. We also established that CsJAZ5 interacts with CsICE1. JA-induced degradation of CsJAZ5 would be expected to release CsICE1, which would then activate the ICE-CBF-COR pathway. After cold treatment, the relative expression levels of ICE-CBF-COR signaling pathway genes, such as CsICE1, CsCBF1, CsCBF2 and CsCOR1, in CsHSFA1d overexpression lines were significantly higher than in the wild type and knockdown lines. Taken together, our results help to reveal the mechanism underlying heat shock-induced cold acclimation in cucumber.
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Affiliation(s)
- Chuandong Qi
- College of Horticulture, China Agricultural University, Beijing, 100193, China
- Institute of Economic Crops, Hubei Academy of Agricultural Sciences, Wuhan, Hubei Province, 430064, China
| | - Danhui Dong
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Yafei Li
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Xuewei Wang
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Luqin Guo
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Lun Liu
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Xiaonan Dong
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Xingsheng Li
- Shandong Huasheng Agriculture Co. Ltd, Qingzhou, Shandong, 262500, China
| | - Xiaowei Yuan
- Shandong Huasheng Agriculture Co. Ltd, Qingzhou, Shandong, 262500, China
| | - Shuxin Ren
- School of Agriculture, Virginia State University, Petersburg, VA, USA
| | - Na Zhang
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Yang-Dong Guo
- College of Horticulture, China Agricultural University, Beijing, 100193, China
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Yin X, Hu Y, Zhao Y, Meng L, Zhang X, Liu H, Wang L, Cui G. Effects of exogenous nitric oxide on wild barley ( Hordeum brevisubulatum) under salt stress. BIOTECHNOL BIOTEC EQ 2022. [DOI: 10.1080/13102818.2022.2041096] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Affiliation(s)
- Xiujie Yin
- Department of Grassland Science, College of Animal Science and Technology, Northeast Agricultural University, Harbin, PR China
| | - Yao Hu
- Department of Grassland Science, College of Animal Science and Technology, Northeast Agricultural University, Harbin, PR China
| | - Yihang Zhao
- Department of Grassland Science, College of Animal Science and Technology, Northeast Agricultural University, Harbin, PR China
| | - Lingdong Meng
- Department of Grassland Science, College of Animal Science and Technology, Northeast Agricultural University, Harbin, PR China
| | - Xiaomeng Zhang
- Department of Grassland Science, College of Animal Science and Technology, Northeast Agricultural University, Harbin, PR China
| | - Haoyue Liu
- Department of Grassland Science, College of Animal Science and Technology, Northeast Agricultural University, Harbin, PR China
| | - Lina Wang
- Department of Grassland Science, College of Animal Science and Technology, Northeast Agricultural University, Harbin, PR China
| | - Guowen Cui
- Department of Grassland Science, College of Animal Science and Technology, Northeast Agricultural University, Harbin, PR China
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Tan K, Zheng J, Liu C, Liu X, Liu X, Gao T, Song X, Wei Z, Ma F, Li C. Heterologous Expression of the Melatonin-Related Gene HIOMT Improves Salt Tolerance in Malus domestica. Int J Mol Sci 2021; 22:ijms222212425. [PMID: 34830307 PMCID: PMC8620682 DOI: 10.3390/ijms222212425] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 11/14/2021] [Accepted: 11/15/2021] [Indexed: 12/22/2022] Open
Abstract
Melatonin, a widely known indoleamine molecule that mediates various animal and plant physiological processes, is formed from N-acetyl serotonin via N-acetylserotonin methyltransferase (ASMT). ASMT is an enzyme that catalyzes melatonin synthesis in plants in the rate-determining step and is homologous to hydroxyindole-O-methyltransferase (HIOMT) melatonin synthase in animals. To date, little is known about the effect of HIOMT on salinity in apple plants. Here, we explored the melatonin physiological function in the salinity condition response by heterologous expressing the homologous human HIOMT gene in apple plants. We discovered that the expression of melatonin-related gene (MdASMT) in apple plants was induced by salinity. Most notably, compared with the wild type, three transgenic lines indicated higher melatonin levels, and the heterologous expression of HIOMT enhanced the expression of melatonin synthesis genes. The transgenic lines showed reduced salt damage symptoms, lower relative electrolyte leakage, and less total chlorophyll loss from leaves under salt stress. Meanwhile, through enhanced activity of antioxidant enzymes, transgenic lines decreased the reactive oxygen species accumulation, downregulated the expression of the abscisic acid synthesis gene (MdNCED3), accordingly reducing the accumulation of abscisic acid under salt stress. Both mechanisms regulated morphological changes in the stomata synergistically, thereby mitigating damage to the plants' photosynthetic ability. In addition, transgenic plants also effectively stabilized their ion balance, raised the expression of salt stress-related genes, as well as alleviated osmotic stress through changes in amino acid metabolism. In summary, heterologous expression of HIOMT improved the adaptation of apple leaves to salt stress, primarily by increasing melatonin concentration, maintaining a high photosynthetic capacity, reducing reactive oxygen species accumulation, and maintaining normal ion homeostasis.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Chao Li
- Correspondence: (F.M.); (C.L.)
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Li M, Wu Z, Gu H, Cheng D, Guo X, Li L, Shi C, Xu G, Gu S, Abid M, Zhong Y, Qi X, Chen J. AvNAC030, a NAC Domain Transcription Factor, Enhances Salt Stress Tolerance in Kiwifruit. Int J Mol Sci 2021; 22:ijms222111897. [PMID: 34769325 PMCID: PMC8585034 DOI: 10.3390/ijms222111897] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 10/29/2021] [Accepted: 10/30/2021] [Indexed: 01/21/2023] Open
Abstract
Kiwifruit (Actinidia chinensis Planch) is suitable for neutral acid soil. However, soil salinization is increasing in kiwifruit production areas, which has adverse effects on the growth and development of plants, leading to declining yields and quality. Therefore, analyzing the salt tolerance regulation mechanism can provide a theoretical basis for the industrial application and germplasm improvement of kiwifruit. We identified 120 NAC members and divided them into 13 subfamilies according to phylogenetic analysis. Subsequently, we conducted a comprehensive and systematic analysis based on the conserved motifs, key amino acid residues in the NAC domain, expression patterns, and protein interaction network predictions and screened the candidate gene AvNAC030. In order to study its function, we adopted the method of heterologous expression in Arabidopsis. Compared with the control, the overexpression plants had higher osmotic adjustment ability and improved antioxidant defense mechanism. These results suggest that AvNAC030 plays a positive role in the salt tolerance regulation mechanism in kiwifruit.
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Affiliation(s)
- Ming Li
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China; (Z.W.); (H.G.); (D.C.); (X.G.); (L.L.); (C.S.); (G.X.); (S.G.); (Y.Z.); (X.Q.); (J.C.)
- Correspondence: (M.L.); (M.A.)
| | - Zhiyong Wu
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China; (Z.W.); (H.G.); (D.C.); (X.G.); (L.L.); (C.S.); (G.X.); (S.G.); (Y.Z.); (X.Q.); (J.C.)
| | - Hong Gu
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China; (Z.W.); (H.G.); (D.C.); (X.G.); (L.L.); (C.S.); (G.X.); (S.G.); (Y.Z.); (X.Q.); (J.C.)
| | - Dawei Cheng
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China; (Z.W.); (H.G.); (D.C.); (X.G.); (L.L.); (C.S.); (G.X.); (S.G.); (Y.Z.); (X.Q.); (J.C.)
| | - Xizhi Guo
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China; (Z.W.); (H.G.); (D.C.); (X.G.); (L.L.); (C.S.); (G.X.); (S.G.); (Y.Z.); (X.Q.); (J.C.)
| | - Lan Li
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China; (Z.W.); (H.G.); (D.C.); (X.G.); (L.L.); (C.S.); (G.X.); (S.G.); (Y.Z.); (X.Q.); (J.C.)
| | - Caiyun Shi
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China; (Z.W.); (H.G.); (D.C.); (X.G.); (L.L.); (C.S.); (G.X.); (S.G.); (Y.Z.); (X.Q.); (J.C.)
| | - Guoyi Xu
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China; (Z.W.); (H.G.); (D.C.); (X.G.); (L.L.); (C.S.); (G.X.); (S.G.); (Y.Z.); (X.Q.); (J.C.)
| | - Shichao Gu
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China; (Z.W.); (H.G.); (D.C.); (X.G.); (L.L.); (C.S.); (G.X.); (S.G.); (Y.Z.); (X.Q.); (J.C.)
| | - Muhammad Abid
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China; (Z.W.); (H.G.); (D.C.); (X.G.); (L.L.); (C.S.); (G.X.); (S.G.); (Y.Z.); (X.Q.); (J.C.)
- Lushan Botanical Garden, Chinese Academy of Sciences, Jiujiang 332900, China
- Correspondence: (M.L.); (M.A.)
| | - Yunpeng Zhong
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China; (Z.W.); (H.G.); (D.C.); (X.G.); (L.L.); (C.S.); (G.X.); (S.G.); (Y.Z.); (X.Q.); (J.C.)
| | - Xiujuan Qi
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China; (Z.W.); (H.G.); (D.C.); (X.G.); (L.L.); (C.S.); (G.X.); (S.G.); (Y.Z.); (X.Q.); (J.C.)
| | - Jinyong Chen
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China; (Z.W.); (H.G.); (D.C.); (X.G.); (L.L.); (C.S.); (G.X.); (S.G.); (Y.Z.); (X.Q.); (J.C.)
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Wu Y, Liu N, Hu L, Liao W, Tang Z, Xiao X, Lyu J, Xie J, Calderón-Urrea A, Yu J. 5-Aminolevulinic Acid Improves Morphogenesis and Na + Subcellular Distribution in the Apical Cells of Cucumis sativus L. Under Salinity Stress. FRONTIERS IN PLANT SCIENCE 2021; 12:636121. [PMID: 33815443 PMCID: PMC8012848 DOI: 10.3389/fpls.2021.636121] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 02/22/2021] [Indexed: 05/31/2023]
Abstract
Soil salinity causes damage to plants and a reduction in output. A natural plant growth regulator, 5-aminolevulinic acid (ALA), has been shown to promote plant growth under abiotic stress conditions. In the present study, we assessed the effects of exogenously applied ALA (25 mg L-1) on the root architecture and Na+ distribution of cucumber (Cucumis sativus L.) seedlings under moderate NaCl stress (50 mmol L-1). The results showed that exogenous ALA improved root length, root volume, root surface area, and cell activity in the root tips, which were inhibited under salt stress. In addition, although salinity stress increased the subcellular Na+ contents, such as those of the cell wall, nucleus, plastid, and mitochondria, ALA treatment reduced these Na+ contents, except the soluble fraction. Molecular biological analysis revealed that ALA application upregulated both the SOS1 and HA3 transcriptional and translational levels, which suggested that the excretion of Na+ into the cytoplasm cloud was promoted by exogenous ALA. Meanwhile, exogenously applied ALA also upregulated the gene and protein expression of NHX1 and VHA-A under salinity stress, which suggested that the compartmentalization of Na+ to the vacuole was enhanced. Overall, exogenous ALA mitigated the damage caused by NaCl in cucumber by enhancing Na+ redistribution and increasing the cytoactivity of root cells.
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Affiliation(s)
- Yue Wu
- College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Na Liu
- College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Linli Hu
- College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Weibiao Liao
- College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Zhongqi Tang
- College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Xuemei Xiao
- College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Jian Lyu
- College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Jianming Xie
- College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Alejandro Calderón-Urrea
- Department of Biology, College of Science and Mathematics, California State University, Fresno, Fresno, CA, United States
- College of Plant Protection, Gansu Agricultural University, Lanzhou, China
| | - Jihua Yu
- College of Horticulture, Gansu Agricultural University, Lanzhou, China
- Gansu Provincial Key Laboratory of Arid Land Crop Science, Gansu Agricultural University, Lanzhou, China
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Hou D, Zhao Z, Hu Q, Li L, Vasupalli N, Zhuo J, Zeng W, Wu A, Lin X. PeSNAC-1 a NAC transcription factor from moso bamboo (Phyllostachys edulis) confers tolerance to salinity and drought stress in transgenic rice. TREE PHYSIOLOGY 2020; 40:1792-1806. [PMID: 32761243 DOI: 10.1093/treephys/tpaa099] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 08/02/2020] [Indexed: 05/16/2023]
Abstract
NAC (NAM, AFAT and CUC) proteins play necessary roles in plant response to environmental stresses. However, the functional roles of NAC genes in moso bamboo (Phyllostachys edulis), an essential economic perennial woody bamboo species, are not well documented. In this study, we retrieved 152 PeNAC genes from the moso bamboo V2 genome, and PeSNAC-1 was isolated and functionally characterized. PeSNAC-1 was localized in the nucleus and had no transactivation activity in yeast. PeSNAC-1 extremely expressed in rhizome and young roots (0.1 and 0.5 cm) and was significantly induced by drought and salt treatments but repressed by abscisic acid (ABA), methyl jasmonate and high temperature (42 °C) in moso bamboo. Under water shortage and salinity conditions, survival ratios, Fv/Fm values, physiological indexes such as activities of superoxide dismutase, peroxidase and catalase and contents of malondialdehyde, H2O2 and proline were significantly higher in transgenic rice than the wild type, which suggests enhanced tolerance to drought and salt stress in PeSANC-1 overexpressed plants. Transcript levels of Na+/H+ antiporter and Na+ transporter genes (OsSOS1, OsNHX1 and OsHKT1;5), ABA signaling and biosynthesis genes (OsABI2, OsRAB16, OsPP2C68, OsLEA3-1, OsLEA3, OsNCED3, OsNCED4 and OsNCED5) and ABA-independent genes (OsDREB1A, OsDREB1B and OsDREB2A) were substantially higher in transgenic as compared with the wild type. Moreover, protein interaction analysis revealed that PeSNAC-1 could interact with stress responsive PeSNAC-2/4 and PeNAP-1/4/5 in both yeast and plant cells, which indicates a synergistic effect of those proteins in regulating the moso bamboo stress response. Our data demonstrate that PeSNAC-1 likely improved salt and drought stress tolerance via modulating gene regulation in both ABA-dependent and independent signaling pathways in transgenic rice. In addition, PeSNAC-1 functions as an important positive stress regulator in moso bamboo, participating in PeSNAC-1 and PeSNAC-2/4 or PeSNAC-1 and PeNAP-1/4/5 interaction networks.
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Affiliation(s)
- Dan Hou
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Lin'An, 311300 Zhejiang, China
| | - Zhongyu Zhao
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Lin'An, 311300 Zhejiang, China
| | - Qiutao Hu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Lin'An, 311300 Zhejiang, China
| | - Ling Li
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Lin'An, 311300 Zhejiang, China
| | - Naresh Vasupalli
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Lin'An, 311300 Zhejiang, China
| | - Juan Zhuo
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Lin'An, 311300 Zhejiang, China
| | - Wei Zeng
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Lin'An, 311300 Zhejiang, China
| | - Aimin Wu
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou 510642, China
| | - Xinchun Lin
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Lin'An, 311300 Zhejiang, China
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Cen H, Liu Y, Li D, Wang K, Zhang Y, Zhang W. Heterologous expression of a chimeric gene, OsDST-SRDX, enhanced salt tolerance of transgenic switchgrass (Panicum virgatum L.). PLANT CELL REPORTS 2020; 39:723-736. [PMID: 32130473 DOI: 10.1007/s00299-020-02526-y] [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: 01/16/2020] [Accepted: 02/20/2020] [Indexed: 06/10/2023]
Abstract
Overexpression of OsDST-SRDX chimeric gene in switchgrass promotes plant growth and improves the salt tolerance of transgenic switchgrass by improving its antioxidative ability. Switchgrass (Panicum virgatum L.) is a forage and model feedstock plant. To avoid competing with crops in arable land utilization, improving salt tolerance of switchgrass is required to use marginal saline land for switchgrass production. To improve salt tolerance of switchgrass, a chimeric DROUGHT AND SALT TOLERANCE (DST) gene OsDST-SRDX was constructed using the Chimeric REpressor gene-Silencing Technology (CRES-T), and introduced into switchgrass genome by Agrobacterium-mediated transformation. Compared to wild-type (WT) plants, OsDST-SRDX transgenic (TG) switchgrass plants showed wider leaves and thicker stems. They performed better under salt stress, had higher relative leaf water content, lower electrolyte leakage and lower malondialdehyde (MDA) content, and accumulated less Na+ and more K+ than WT controls. The transgenic plants had also higher activities of antioxidant enzymes associated with suppressed expressing of genes in H2O2 homeostasis, including glutathione S-transferase (GST2, GST6), cytochrome P450, peroxidase 24 precursor, and induced expressing of CAT and SOD under salt stress to eliminate excess H2O2. Our results indicate that overexpression of the chimeric gene OsDST-SRDX improves salt tolerance of switchgrass, a C4 biofuel crop.
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Affiliation(s)
- Huifang Cen
- College of Grassland Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Yanrong Liu
- College of Grassland Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Dayong Li
- College of Life Sciences, Shandong Normal University, Jinan, 250014, Shandong, China
| | - Kexin Wang
- College of Grassland Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Yunwei Zhang
- College of Grassland Science and Technology, China Agricultural University, Beijing, 100193, China
- National Energy R&D Center for Biomass (NECB), China Agricultural University, Beijing, 100193, China
| | - Wanjun Zhang
- College of Grassland Science and Technology, China Agricultural University, Beijing, 100193, China.
- National Energy R&D Center for Biomass (NECB), China Agricultural University, Beijing, 100193, China.
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Qi C, Lin X, Li S, Liu L, Wang Z, Li Y, Bai R, Xie Q, Zhang N, Ren S, Zhao B, Li X, Fan S, Guo YD. SoHSC70 positively regulates thermotolerance by alleviating cell membrane damage, reducing ROS accumulation, and improving activities of antioxidant enzymes. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2019; 283:385-395. [PMID: 31128709 DOI: 10.1016/j.plantsci.2019.03.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 03/07/2019] [Accepted: 03/08/2019] [Indexed: 06/09/2023]
Abstract
High temperature is a major environmental factor affecting plant growth. Heat shock proteins (Hsps) are molecular chaperones that play important roles in improving plant thermotolerance during heat stress. Spinach (Spinacia oleracea) is very sensitive to high temperature; however, the specific function of Hsps in spinach is unclear. In this study, cytosolic heat shock 70 protein (SoHSC70), which was induced by heat stress, was cloned from spinach. Overexpressing SoHSC70 in spinach calli and Arabidopsis enhanced their thermotolerance. In contrast, spinach seedlings with silenced SoHSC70 by virus-induced gene silencing (VIGS) showed more sensitivity to heat stress. Further analysis revealed that overexpressing SoHSC70 altered relative electrical conductivity (REC), malondialdehyde (MDA) content, photosynthetic rate, reactive oxygen species (ROS) accumulation and the activities of antioxidant enzymes, such as superoxide dismutase (SOD), peroxidase (POD), ascorbate peroxidase (APX), and catalase (CAT) after the heat treatment. Taken together, our results suggest that overexpressing SoHSC70 positively affects heat tolerance by reducing membrane damage and ROS accumulation and improving activities of antioxidant enzymes.
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Affiliation(s)
- Chuandong Qi
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Xinpeng Lin
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Shuangtao Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Lun Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Zhirong Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Yu Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Ruyue Bai
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Qian Xie
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Na Zhang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Shuxin Ren
- School of Agriculture, Virginia State University, Petersburg, USA
| | - Bing Zhao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Horticulture, China Agricultural University, Beijing 100193, China.
| | - Xiangdong Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Shuangxi Fan
- College of Plant Science & Technology, Beijing University of Agriculture, Beijing, 102206, China
| | - Yang-Dong Guo
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Horticulture, China Agricultural University, Beijing 100193, China.
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