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Lv QY, Zhao QP, Zhu C, Ding M, Chu FY, Li XK, Cheng K, Zhao X. Hydrogen peroxide mediates high-intensity blue light-induced hypocotyl phototropism of cotton seedlings. STRESS BIOLOGY 2023; 3:27. [PMID: 37676397 PMCID: PMC10442013 DOI: 10.1007/s44154-023-00111-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 07/16/2023] [Indexed: 09/08/2023]
Abstract
Phototropism is a classic adaptive growth response that helps plants to enhance light capture for photosynthesis. It was shown that hydrogen peroxide (H2O2) participates in the regulation of blue light-induced hypocotyl phototropism; however, the underlying mechanism is unclear. In this study, we demonstrate that the unilateral high-intensity blue light (HBL) could induce asymmetric distribution of H2O2 in cotton hypocotyls. Disruption of the HBL-induced asymmetric distribution of H2O2 by applying either H2O2 itself evenly on the hypocotyls or H2O2 scavengers on the lit side of hypocotyls could efficiently inhibit hypocotyl phototropic growth. Consistently, application of H2O2 on the shaded and lit sides of the hypocotyls led to reduced and enhanced hypocotyl phototropism, respectively. Further, we show that H2O2 inhibits hypocotyl elongation of cotton seedlings, thus supporting the repressive role of H2O2 in HBL-induced hypocotyl phototropism. Moreover, our results show that H2O2 interferes with HBL-induced asymmetric distribution of auxin in the cotton hypocotyls. Taken together, our study uncovers that H2O2 changes the asymmetric accumulation of auxin and inhibits hypocotyl cell elongation, thus mediating HBL-induced hypocotyl phototropism.
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Affiliation(s)
- Qian-Yi Lv
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, School of Life Sciences, Henan University, Kaifeng, 475004, China
| | - Qing-Ping Zhao
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, School of Life Sciences, Henan University, Kaifeng, 475004, China
- College of Life Science and Agricultural Engineering, Nanyang Normal University, 1638 Wolong Road, Nanyang, 473061, Henan, China
| | - Chen Zhu
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, School of Life Sciences, Henan University, Kaifeng, 475004, China
| | - Meichen Ding
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, School of Life Sciences, Henan University, Kaifeng, 475004, China
| | - Fang-Yuan Chu
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, School of Life Sciences, Henan University, Kaifeng, 475004, China
| | - Xing-Kun Li
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, School of Life Sciences, Henan University, Kaifeng, 475004, China
| | - Kai Cheng
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, School of Life Sciences, Henan University, Kaifeng, 475004, China
| | - Xiang Zhao
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, School of Life Sciences, Henan University, Kaifeng, 475004, China.
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Pei S, Liu Y, Li W, Krichilsky B, Dai S, Wang Y, Wang X, Johnson DM, Crawford BM, Swift GB, Vo-Dinh T, Pei ZM, Yuan F. OSCA1 is an osmotic specific sensor: a method to distinguish Ca 2+ -mediated osmotic and ionic perception. THE NEW PHYTOLOGIST 2022; 235:1665-1678. [PMID: 35527515 DOI: 10.1111/nph.18217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 04/29/2022] [Indexed: 06/14/2023]
Abstract
Genetic mutants defective in stimulus-induced Ca2+ increases have been gradually isolated, allowing the identification of cell-surface sensors/receptors, such as the osmosensor OSCA1. However, determining the Ca2+ -signaling specificity to various stimuli in these mutants remains a challenge. For instance, less is known about the exact selectivity between osmotic and ionic stresses in the osca1 mutant. Here, we have developed a method to distinguish the osmotic and ionic effects by analyzing Ca2+ increases, and demonstrated that osca1 is impaired primarily in Ca2+ increases induced by the osmotic but not ionic stress. We recorded Ca2+ increases induced by sorbitol (osmotic effect, OE) and NaCl/CaCl2 (OE + ionic effect, IE) in Arabidopsis wild-type and osca1 seedlings. We assumed the NaCl/CaCl2 total effect (TE) = OE + IE, then developed procedures for Ca2+ imaging, image analysis and mathematic fitting/modeling, and found osca1 defects mainly in OE. The osmotic specificity of osca1 suggests that osmotic and ionic perceptions are independent. The precise estimation of these two stress effects is applicable not only to new Ca2+ -signaling mutants with distinct stimulus specificity but also the complex Ca2+ signaling crosstalk among multiple concurrent stresses that occur naturally, and will enable us to specifically fine tune multiple signal pathways to improve crop yields.
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Affiliation(s)
- Songyu Pei
- College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
- Department of Biology, Duke University, Durham, NC, 27708, USA
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036, China
| | - Yuantao Liu
- College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
- Department of Biology, Duke University, Durham, NC, 27708, USA
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036, China
| | - Wenke Li
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036, China
| | | | - Shiwen Dai
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036, China
| | - Yan Wang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036, China
| | - Xi Wang
- College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036, China
| | | | - Bridget M Crawford
- Fitzpatrick Institute for Photonics, Duke University, Durham, NC, 27708, USA
- Department of Biomedical Engineering, Duke University, Durham, NC, 27708, USA
| | - Gary B Swift
- Department of Physics, Duke University, Durham, NC, 27708, USA
| | - Tuan Vo-Dinh
- Fitzpatrick Institute for Photonics, Duke University, Durham, NC, 27708, USA
- Department of Biomedical Engineering, Duke University, Durham, NC, 27708, USA
| | - Zhen-Ming Pei
- Department of Biology, Duke University, Durham, NC, 27708, USA
- Fitzpatrick Institute for Photonics, Duke University, Durham, NC, 27708, USA
| | - Fang Yuan
- Department of Biology, Duke University, Durham, NC, 27708, USA
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036, China
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3
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Li Y, Liang Y, Liu M, Zhang Q, Wang Z, Fan J, Ruan Y, Zhang A, Dong X, Yue J, Li C. Genome-Wide Association Studies Provide Insights Into the Genetic Architecture of Seed Germination Traits in Maize. FRONTIERS IN PLANT SCIENCE 2022; 13:930438. [PMID: 35755688 PMCID: PMC9226777 DOI: 10.3389/fpls.2022.930438] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 05/25/2022] [Indexed: 06/01/2023]
Abstract
Seed germination is an important agronomic trait that affects crop yield and quality. Rapid and uniform seed germination traits are required in agricultural production. Although several genes are involved in seed germination and have been identified in Arabidopsis and rice, the genetic basis governing seed germination in maize remains unknown. Herein, we conducted a genome-wide association study to determine the genetic architecture of two germination traits, germination speed, and consistency, in a diverse panel. We genotyped 321 maize inbred populations with tropical, subtropical, or temperate origins using 1219401 single-nucleotide polymorphism markers. We identified 58 variants that were associated with the two traits, and 12 of these were shared between the two traits, indicating partial genetic similarity. Moreover, 36 candidate genes were involved in seed germination with functions including energy metabolism, signal transduction, and transcriptional regulation. We found that favorable variants had a greater effect on the tropical subpopulation than on the temperate. Accumulation of favorable variants shortened germination time and improved uniformity in maize inbred lines. These findings contribute significantly to understanding the genetic basis of maize seed germination and will contribute to the molecular breeding of maize seed germination.
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Affiliation(s)
- Yuntong Li
- College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, China
| | - Yameng Liang
- State Key Laboratory of Plant Physiology and Biochemistry, National Maize Improvement Center, Key Laboratory of Biology and Genetic Improvement of Maize (MOA), Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, China
| | - Meiling Liu
- College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, China
| | - Qiyuan Zhang
- College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, China
| | - Ziwei Wang
- College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, China
| | - Jinjuan Fan
- College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, China
| | - Yanye Ruan
- College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, China
| | - Ao Zhang
- College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, China
| | - Xiaomei Dong
- College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, China
| | - Jing Yue
- College of Pharmaceutical and Biological Engineering, Shenyang University of Chemical Technology, Shenyang, China
| | - Cong Li
- College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, China
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4
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Ren H, Zhao X, Li W, Hussain J, Qi G, Liu S. Calcium Signaling in Plant Programmed Cell Death. Cells 2021; 10:cells10051089. [PMID: 34063263 PMCID: PMC8147489 DOI: 10.3390/cells10051089] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 04/24/2021] [Accepted: 04/28/2021] [Indexed: 12/12/2022] Open
Abstract
Programmed cell death (PCD) is a process intended for the maintenance of cellular homeostasis by eliminating old, damaged, or unwanted cells. In plants, PCD takes place during developmental processes and in response to biotic and abiotic stresses. In contrast to the field of animal studies, PCD is not well understood in plants. Calcium (Ca2+) is a universal cell signaling entity and regulates numerous physiological activities across all the kingdoms of life. The cytosolic increase in Ca2+ is a prerequisite for the induction of PCD in plants. Although over the past years, we have witnessed significant progress in understanding the role of Ca2+ in the regulation of PCD, it is still unclear how the upstream stress perception leads to the Ca2+ elevation and how the signal is further propagated to result in the onset of PCD. In this review article, we discuss recent advancements in the field, and compare the role of Ca2+ signaling in PCD in biotic and abiotic stresses. Moreover, we discuss the upstream and downstream components of Ca2+ signaling and its crosstalk with other signaling pathways in PCD. The review is expected to provide new insights into the role of Ca2+ signaling in PCD and to identify gaps for future research efforts.
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Affiliation(s)
- Huimin Ren
- State Key Laboratory of Subtropical Silviculture, School of Forestry and Biotechnology, Zhejiang A & F University, Hangzhou 311300, China; (H.R.); (X.Z.); (W.L.)
| | - Xiaohong Zhao
- State Key Laboratory of Subtropical Silviculture, School of Forestry and Biotechnology, Zhejiang A & F University, Hangzhou 311300, China; (H.R.); (X.Z.); (W.L.)
| | - Wenjie Li
- State Key Laboratory of Subtropical Silviculture, School of Forestry and Biotechnology, Zhejiang A & F University, Hangzhou 311300, China; (H.R.); (X.Z.); (W.L.)
| | - Jamshaid Hussain
- Department of Biotechnology, COMSATS University Islamabad, Abbottabad Campus, University Road, Abbottabad 22060, Pakistan;
| | - Guoning Qi
- State Key Laboratory of Subtropical Silviculture, School of Forestry and Biotechnology, Zhejiang A & F University, Hangzhou 311300, China; (H.R.); (X.Z.); (W.L.)
- Correspondence: (G.Q.); (S.L.)
| | - Shenkui Liu
- State Key Laboratory of Subtropical Silviculture, School of Forestry and Biotechnology, Zhejiang A & F University, Hangzhou 311300, China; (H.R.); (X.Z.); (W.L.)
- Correspondence: (G.Q.); (S.L.)
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Zhang L, Tian W, Huang G, Liu B, Wang A, Zhu J, Guo X. The SikCuZnSOD3 gene improves abiotic stress resistance in transgenic cotton. MOLECULAR BREEDING : NEW STRATEGIES IN PLANT IMPROVEMENT 2021; 41:26. [PMID: 37309423 PMCID: PMC10236091 DOI: 10.1007/s11032-021-01217-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Accepted: 02/15/2021] [Indexed: 06/14/2023]
Abstract
The expression of a gene encoding peroxisomal Cu-Zn superoxide dismutase from Saussurea involucrata Kar. et Kir. was induced by low temperature, PEG6000 treatment, and NaCl stress. To investigate the role of SikCuZnSOD3 in the mitigation of abiotic stress, we used Agrobacterium-mediated transformation to create transgenic cotton that overexpressed SikCuZnSOD3. Phenotypic analysis of T4 generation transgenic lines showed that they generally grew better than wild-type cotton under low temperature, PEG6000 treatment, and NaCl stress. Although there were no significant differences under control conditions, transgenic plants exhibited greater survival, fresh weight, and dry weight than wild-type plants under all three stress treatments. Additional physiological analyses demonstrated that the transgenic cotton had higher relative water content, proline and soluble sugar contents, and activity of antioxidant enzymes (superoxide dismutase, catalase, and peroxidase), as well as lower relative conductivity, malondialdehyde content, and H2O2 and O2- accumulation. More importantly, overexpression of SikCuZnSOD3 increased the yield of cotton fiber. Our results confirm that the overexpression of SikCuZnSOD3 can improve the abiotic stress resistance of cotton by increasing the activity of antioxidant enzymes, maintaining ROS homeostasis, and reducing cell membrane damage. Supplementary Information The online version contains supplementary material available at 10.1007/s11032-021-01217-0.
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Affiliation(s)
- Li Zhang
- Department of Preventive Medicine, School of Medicine, Key laboratory of Preventive Medicine, Shihezi University, Shihezi, 832000 China
| | - Wenhui Tian
- College of Life Science, Shihezi University, Shihezi, 832000 China
| | - Gang Huang
- College of Life Science, Shihezi University, Shihezi, 832000 China
| | - Bucang Liu
- College of Life Science, Shihezi University, Shihezi, 832000 China
| | - Aiying Wang
- College of Life Science, Shihezi University, Shihezi, 832000 China
| | - Jianbo Zhu
- College of Life Science, Shihezi University, Shihezi, 832000 China
| | - Xinyong Guo
- College of Life Science, Shihezi University, Shihezi, 832000 China
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Wang W, Zhang J, Ai L, Wu D, Li B, Zhang L, Zhao L. Cyclic Nucleotide-Gated Ion Channel 6 Mediates Thermotolerance in Arabidopsis Seedlings by Regulating Hydrogen Peroxide Production via Cytosolic Calcium Ions. FRONTIERS IN PLANT SCIENCE 2021; 12:708672. [PMID: 34335670 PMCID: PMC8317691 DOI: 10.3389/fpls.2021.708672] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 06/22/2021] [Indexed: 05/18/2023]
Abstract
We previously reported the involvement of cyclic nucleotide-gated ion channel 6 (CNGC6) and hydrogen peroxide (H2O2) in plant responses to heat shock (HS). To demonstrate their relationship with plant thermotolerance, we assessed the effect of HS on several groups of Arabidopsis (Arabidopsis thaliana) seedlings: wild-type, cngc6 mutant, and its complementation line. Under exposure to HS, the level of H2O2 was lower in the cngc6 mutant seedlings than in the wild-type (WT) seedlings but obviously increased in the complementation line. The treatment of Arabidopsis seeds with calcium ions (Ca2+) increased the H2O2 levels in the seedlings under HS treatment, whereas treatment with a Ca2+ chelator (EGTA) inhibited it, indicating that CNGC6 may stimulate the accumulation of H2O2 in a manner dependent on an increase in cytosolic Ca2+ ([Ca2+]cyt). This point was verified by phenotypic observations and thermotolerance testing with transgenic plants overexpressing AtRbohB and AtRbohD (two genes involved in HS-responsive H2O2 production), respectively, in a cngc6 background. Real-time reverse transcription-polymerase chain reactions and Western blotting suggested that CNGC6 enhanced the gene transcription of HS factors (HSFs) and the accumulation of HS proteins (HSPs) via H2O2. These upon results indicate that H2O2 acts downstream of CNGC6 in the HS signaling pathway, increasing our understanding of the initiation of plants responses to high temperatures.
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Affiliation(s)
- Wenxu Wang
- Hebei Key Laboratory of Molecular and Cellular Biology, Key Laboratory of Molecular and Cellular Biology of the Ministry of Education, Hebei Collaboration Innovation Center for Cell Signaling, College of Life Sciences, Hebei Normal University, Shijiazhuang, China
| | - Jiaojiao Zhang
- Hebei Key Laboratory of Molecular and Cellular Biology, Key Laboratory of Molecular and Cellular Biology of the Ministry of Education, Hebei Collaboration Innovation Center for Cell Signaling, College of Life Sciences, Hebei Normal University, Shijiazhuang, China
| | - Lijuan Ai
- Hebei Key Laboratory of Molecular and Cellular Biology, Key Laboratory of Molecular and Cellular Biology of the Ministry of Education, Hebei Collaboration Innovation Center for Cell Signaling, College of Life Sciences, Hebei Normal University, Shijiazhuang, China
| | - Dan Wu
- Hebei Key Laboratory of Molecular and Cellular Biology, Key Laboratory of Molecular and Cellular Biology of the Ministry of Education, Hebei Collaboration Innovation Center for Cell Signaling, College of Life Sciences, Hebei Normal University, Shijiazhuang, China
| | - Bing Li
- Hebei Key Laboratory of Molecular and Cellular Biology, Key Laboratory of Molecular and Cellular Biology of the Ministry of Education, Hebei Collaboration Innovation Center for Cell Signaling, College of Life Sciences, Hebei Normal University, Shijiazhuang, China
| | - Lingang Zhang
- College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Liqun Zhao
- Hebei Key Laboratory of Molecular and Cellular Biology, Key Laboratory of Molecular and Cellular Biology of the Ministry of Education, Hebei Collaboration Innovation Center for Cell Signaling, College of Life Sciences, Hebei Normal University, Shijiazhuang, China
- *Correspondence: Liqun Zhao, , orcid.org/0000-0001-6718-8130
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7
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Sun X, Zhu J, Li X, Li Z, Han L, Luo H. AsHSP26.8a, a creeping bentgrass small heat shock protein integrates different signaling pathways to modulate plant abiotic stress response. BMC PLANT BIOLOGY 2020; 20:184. [PMID: 32345221 PMCID: PMC7189581 DOI: 10.1186/s12870-020-02369-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 03/29/2020] [Indexed: 05/24/2023]
Abstract
BACKGROUND Small heat shock proteins (sHSPs) are critical for plant response to biotic and abiotic stresses, especially heat stress. They have also been implicated in various aspects of plant development. However, the acting mechanisms of the sHSPs in plants, especially in perennial grass species, remain largely elusive. RESULTS In this study, AsHSP26.8a, a novel chloroplast-localized sHSP gene from creeping bentgrass (Agrostis stolonifera L.) was cloned and its role in plant response to environmental stress was studied. AsHSP26.8a encodes a protein of 26.8 kDa. Its expression was strongly induced in both leaf and root tissues by heat stress. Transgenic Arabidopsis plants overexpressing AsHSP26.8a displayed reduced tolerance to heat stress. Furthermore, overexpression of AsHSP26.8a resulted in hypersensitivity to hormone ABA and salinity stress. Global gene expression analysis revealed AsHSP26.8a-modulated expression of heat-shock transcription factor gene, and the involvement of AsHSP26.8a in ABA-dependent and -independent as well as other stress signaling pathways. CONCLUSIONS Our results suggest that AsHSP26.8a may negatively regulate plant response to various abiotic stresses through modulating ABA and other stress signaling pathways.
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Affiliation(s)
- Xinbo Sun
- Key Laboratory of Crop Growth Regulation of Hebei Province, College of Agronomy, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China
- Department of Genetics and Biochemistry, Clemson University, 110 Biosystems Research Complex, Clemson, SC, 29634, USA
| | - Junfei Zhu
- Key Laboratory of Crop Growth Regulation of Hebei Province, College of Agronomy, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China
| | - Xin Li
- Key Laboratory of Crop Growth Regulation of Hebei Province, College of Agronomy, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China
| | - Zhigang Li
- Department of Genetics and Biochemistry, Clemson University, 110 Biosystems Research Complex, Clemson, SC, 29634, USA
| | - Liebao Han
- Turfgrass Research Institute, Beijing Forestry University, Beijing, 100083, People's Republic of China.
| | - Hong Luo
- Department of Genetics and Biochemistry, Clemson University, 110 Biosystems Research Complex, Clemson, SC, 29634, USA.
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Abdel-Hameed AAE, Prasad KVSK, Jiang Q, Reddy ASN. Salt-Induced Stability of SR1/CAMTA3 mRNA Is Mediated by Reactive Oxygen Species and Requires the 3' End of Its Open Reading Frame. PLANT & CELL PHYSIOLOGY 2020; 61:748-760. [PMID: 31917443 DOI: 10.1093/pcp/pcaa001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 12/25/2019] [Indexed: 06/10/2023]
Abstract
Soil salinity, a prevalent abiotic stress, causes enormous losses in global crop yields annually. Previous studies have shown that salt stress-induced reprogramming of gene expression contributes to the survival of plants under this stress. However, mechanisms regulating gene expression in response to salt stress at the posttranscriptional level are not well understood. In this study, we show that salt stress increases the level of Signal Responsive 1 (SR1) mRNA, a member of signal-responsive Ca2+/calmodulin-regulated transcription factors, by enhancing its stability. We present multiple lines of evidence indicating that reactive oxygen species generated by NADPH oxidase activity mediate salt-induced SR1 transcript stability. Using mutants impaired in either nonsense-mediated decay, XRN4 or mRNA decapping pathways, we show that neither the nonsense-mediated mRNA decay pathway, XRN4 nor the decapping of SR1 mRNA is required for its decay. We analyzed the salt-induced accumulation of eight truncated versions of the SR1 coding region (∼3 kb) in the sr1 mutant background. This analysis identified a 500-nt region at the 3' end of the SR1 coding region to be required for the salt-induced stability of SR1 mRNA. Potential mechanisms by which this region confers SR1 transcript stability in response to salt are discussed.
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Affiliation(s)
- Amira A E Abdel-Hameed
- Department of Biology and Program in Cell and Molecular Biology, Colorado State University, Fort Collins, CO 80523-1878, USA
- Department of Botany and Microbiology, Faculty of Science, Zagazig University, Zagazig 44519, Egypt
| | - Kasavajhala V S K Prasad
- Department of Biology and Program in Cell and Molecular Biology, Colorado State University, Fort Collins, CO 80523-1878, USA
| | - Qiyan Jiang
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Anireddy S N Reddy
- Department of Biology and Program in Cell and Molecular Biology, Colorado State University, Fort Collins, CO 80523-1878, USA
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9
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Clark G, Roux SJ. Role of Ca 2+ in Mediating Plant Responses to Extracellular ATP and ADP. Int J Mol Sci 2018; 19:E3590. [PMID: 30441766 PMCID: PMC6274673 DOI: 10.3390/ijms19113590] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 11/08/2018] [Indexed: 12/30/2022] Open
Abstract
Among the most recently discovered chemical regulators of plant growth and development are extracellular nucleotides, especially extracellular ATP (eATP) and extracellular ADP (eADP). Plant cells release ATP into their extracellular matrix under a variety of different circumstances, and this eATP can then function as an agonist that binds to a specific receptor and induces signaling changes, the earliest of which is an increase in the concentration of cytosolic calcium ([Ca2+]cyt). This initial change is then amplified into downstream-signaling changes that include increased levels of reactive oxygen species and nitric oxide, which ultimately lead to major changes in the growth rate, defense responses, and leaf stomatal apertures of plants. This review presents and discusses the evidence that links receptor activation to increased [Ca2+]cyt and, ultimately, to growth and diverse adaptive changes in plant development. It also discusses the evidence that increased [Ca2+]cyt also enhances the activity of apyrase (nucleoside triphosphate diphosphohydrolase) enzymes that function in multiple subcellular locales to hydrolyze ATP and ADP, and thus limit or terminate the effects of these potent regulators.
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Affiliation(s)
- Greg Clark
- Department of Molecular Biosciences, University of Texas, Austin, TX 78712, USA.
| | - Stanley J Roux
- Department of Molecular Biosciences, University of Texas, Austin, TX 78712, USA.
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10
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An JP, Yao JF, Xu RR, You CX, Wang XF, Hao YJ. An apple NAC transcription factor enhances salt stress tolerance by modulating the ethylene response. PHYSIOLOGIA PLANTARUM 2018; 164:279-289. [PMID: 29527680 DOI: 10.1111/ppl.12724] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 03/04/2018] [Accepted: 03/05/2018] [Indexed: 05/25/2023]
Abstract
It is known that ethylene signaling is involved in the regulation of the salt stress response. However, the molecular mechanism of ethylene-regulated salt stress tolerance remains largely unclear. In this study, an apple NAM ATAF CUC transcription factor, MdNAC047, was isolated and functionally characterized to be involved in ethylene-modulated salt tolerance. MdNAC047 gene was significantly induced by salt treatment and its overexpression conferred increased tolerance to salt stress and facilitated the release of ethylene. Quantitative real-time-PCR analysis demonstrated that overexpression of MdNAC047 increased the expression of ethylene-responsive genes. Electrophoretic mobility shift assay, yeast one-hybrid and dual-luciferase assays suggested that MdNAC047 directly binds to the MdERF3 (ETHYLENE RESPONSE FACTOR) promoter and activates its transcription. In addition, genetic analysis assays indicated that MdNAC047 regulates ethylene production at least partially in an MdERF3-dependent pathway. Overall, we found a novel 'MdNAC047-MdERF3-ethylene-salt tolerance' regulatory pathway, which provide new insight into the link between ethylene and salt stress.
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Affiliation(s)
- Jian-Ping An
- State Key Laboratory of Crop Biology, MOA Key Laboratory of Horticultural Crop Biology and Germplasm Innovation, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, 271018, China
| | - Ji-Fang Yao
- State Key Laboratory of Crop Biology, MOA Key Laboratory of Horticultural Crop Biology and Germplasm Innovation, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, 271018, China
| | - Rui-Rui Xu
- College of Biological and Agricultural Engineering, Weifang University, Weifang, Shandong, 261061, China
| | - Chun-Xiang You
- State Key Laboratory of Crop Biology, MOA Key Laboratory of Horticultural Crop Biology and Germplasm Innovation, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, 271018, China
| | - Xiao-Fei Wang
- State Key Laboratory of Crop Biology, MOA Key Laboratory of Horticultural Crop Biology and Germplasm Innovation, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, 271018, China
| | - Yu-Jin Hao
- State Key Laboratory of Crop Biology, MOA Key Laboratory of Horticultural Crop Biology and Germplasm Innovation, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, 271018, China
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Mansouri M, Naghavi MR, Alizadeh H, Mohammadi-Nejad G, Mousavi SA, Salekdeh GH, Tada Y. Transcriptomic analysis of Aegilops tauschii during long-term salinity stress. Funct Integr Genomics 2018; 19:13-28. [PMID: 29931612 DOI: 10.1007/s10142-018-0623-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Revised: 03/17/2018] [Accepted: 06/07/2018] [Indexed: 10/28/2022]
Abstract
Aegilops tauschii is the diploid progenitor of the bread wheat D-genome. It originated from Iran and is a source of abiotic stress tolerance genes. However, little is known about the molecular events of salinity tolerance in Ae. tauschii. This study investigates the leaf transcriptional changes associated with long-term salt stress. Total RNA extracted from leaf tissues of control and salt-treated samples was sequenced using the Illumina technology, and more than 98 million high-quality reads were assembled into 255,446 unigenes with an average length of 1398 bp and an N50 of 2269 bp. Functional annotation of the unigenes showed that 93,742 (36.69%) had at least a significant BLAST hit in the SwissProt database, while 174,079 (68.14%) showed significant similarity to proteins in the NCBI nr database. Differential expression analysis identified 4506 salt stress-responsive unigenes. Bioinformatic analysis of the differentially expressed unigenes (DEUs) revealed a number of biological processes and pathways involved in the establishment of ion homeostasis, signaling processes, carbohydrate metabolism, and post-translational modifications. Fine regulation of starch and sucrose content may be important features involved in salt tolerance in Ae. tauschii. Moreover, 82% of DEUs mapped to the D-subgenome, including known QTL for salt tolerance, and these DEUs showed similar salt stress responses in other accessions of Ae. tauschii. These results could provide fundamental insight into the regulatory process underlying salt tolerance in Ae. tauschii and wheat and facilitate identification of genes involved in their salt tolerance mechanisms.
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Affiliation(s)
- Mehdi Mansouri
- Department of Agricultural Biotechnology, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Mohammad Reza Naghavi
- Agronomy and Plant Breeding Department, Agricultural & Natural Resources College, University of Tehran, Karaj, 31587-11167, Iran.
| | - Hoshang Alizadeh
- Agronomy and Plant Breeding Department, Agricultural & Natural Resources College, University of Tehran, Karaj, 31587-11167, Iran
| | - Ghasem Mohammadi-Nejad
- Department of Agronomy and plant Breeding, College of Agriculture and Center of Excellence for Abiotic Stress in Cereal Crop, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Seyed Ahmad Mousavi
- Department of Molecular Systems Biology at Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Ghasem Hosseini Salekdeh
- Department of Systems Biology, Agricultural Biotechnology Research Institute of Iran, Karaj, Iran
| | - Yuichi Tada
- School of Bioscience and Biotechnology, Tokyo University of Technology, 1404-1 Katakura, Hachioji, Tokyo, 192-0982, Japan.
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12
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Search for Partner Proteins of A. thaliana Immunophilins Involved in the Control of Plant Immunity. Molecules 2018; 23:molecules23040953. [PMID: 29671793 PMCID: PMC6017422 DOI: 10.3390/molecules23040953] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 04/16/2018] [Accepted: 04/16/2018] [Indexed: 12/04/2022] Open
Abstract
The involvement of plant immunophilins in multiple essential processes such as development, various ways of adapting to biotic and abiotic stresses, and photosynthesis has already been established. Previously, research has demonstrated the involvement of three immunophilin genes (AtCYP19-1/ROC3, AtFKBP65/ROF2, and AtCYP57) in the control of plant response to invasion by various pathogens. Current research attempts to identify host target proteins for each of the selected immunophilins. As a result, candidate interactors have been determined and confirmed using a yeast 2-hybrid (Y2H) system for protein–protein interaction assays. The generation of mutant isoforms of ROC3 and AtCYP57 harboring substituted amino acids in the in silico-predicted active sites became essential to achieving significant binding to its target partners. This data shows that ROF2 targets calcium-dependent lipid-binding domain-containing protein (At1g70790; AT1) and putative protein phosphatase (At2g30020; АТ2), whereas ROC3 interacts with GTP-binding protein (At1g30580; ENGD-1) and RmlC-like cupin (At5g39120). The immunophilin AtCYP57 binds to putative pyruvate decarboxylase-1 (Pdc1) and clathrin adaptor complex-related protein (At5g05010). Identified interactors confirm our previous findings that immunophilins ROC3, ROF2, and AtCYP57 are directly involved with stress response control. Further, these findings extend our understanding of the molecular functional pathways of these immunophilins.
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13
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Liu L, Jiang Z, Zhang S, Zhao H, Yang W, Siedow JN, Pei ZM. Both NaCl and H 2O 2 Long-Term Stresses Affect Basal Cytosolic Ca 2+ Levels but Only NaCl Alters Cytosolic Ca 2+ Signatures in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2018; 9:1390. [PMID: 30405646 PMCID: PMC6206402 DOI: 10.3389/fpls.2018.01390] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 08/31/2018] [Indexed: 05/22/2023]
Abstract
Salinity is one of the formidable environmental factors that affect plant growth and development and constrain agricultural productivity. Experimentally imposed short-term NaCl treatment triggers a transient increase in cytosolic free Ca2+ concentration ([Ca2+]i) via Ca2+ influx across the plasma membrane. Salinity stress, as well as other stresses, induces the production of reactive oxygen species (ROS), such as H2O2. It is well established that short-term H2O2 treatment also triggers a transient increase in [Ca2+]i. However, whether and how long-term NaCl and H2O2 treatments affect the basal levels of [Ca2+]i as well as plant responses to additional NaCl and H2O2 stresses remain poorly understood. Using an aequorin-based Ca2+ imaging assay, we found that the long-term treatment of Arabidopsis seedlings with both moderate NaCl and H2O2 in the growth media reduced the basal [Ca2+]i levels. Interestingly, we found that the long-term treatment with NaCl, but not H2O2, affected the responses of plants to additional NaCl stress, and remarkably the roots displayed enhanced responses while the leaves showed reduced responses. These findings suggest that plants adapt to the long-term NaCl stress, while H2O2 might be an integrator of many stresses.
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Affiliation(s)
- Lulu Liu
- College of Life Sciences, Zhejiang University, Hangzhou, China
- Center on Plant Environmental Sensing, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Zhonghao Jiang
- Department of Biology, Duke University, Durham, NC, United States
| | - Shu Zhang
- College of Life Sciences, Zhejiang University, Hangzhou, China
- Center on Plant Environmental Sensing, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Hongyan Zhao
- Center on Plant Environmental Sensing, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Weiguang Yang
- Center on Plant Environmental Sensing, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
- School of Life Sciences, Zhejiang Sci-Tech University, Hangzhou, China
| | - James N. Siedow
- Department of Biology, Duke University, Durham, NC, United States
| | - Zhen-Ming Pei
- College of Life Sciences, Zhejiang University, Hangzhou, China
- Center on Plant Environmental Sensing, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
- Department of Biology, Duke University, Durham, NC, United States
- *Correspondence: Zhen-Ming Pei,
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14
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Physiological and Transcriptomic Responses of Chinese Cabbage (Brassica rapa L. ssp. Pekinensis) to Salt Stress. Int J Mol Sci 2017; 18:ijms18091953. [PMID: 28895882 PMCID: PMC5618602 DOI: 10.3390/ijms18091953] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 08/18/2017] [Accepted: 09/04/2017] [Indexed: 11/17/2022] Open
Abstract
Salt stress is one of the major abiotic stresses that severely impact plant growth and development. In this study, we investigated the physiological and transcriptomic responses of Chinese cabbage “Qingmaye” to salt stress, a main variety in North China. Our results showed that the growth and photosynthesis of Chinese cabbage were significantly inhibited by salt treatment. However, as a glycophyte, Chinese cabbage could cope with high salinity; it could complete an entire life cycle at 100 mM NaCl. The high salt tolerance of Chinese cabbage was achieved by accumulating osmoprotectants and by maintaining higher activity of antioxidant enzymes. Transcriptomic responses were analyzed using the digital gene expression profiling (DGE) technique after 12 h of treatment by 200 mM NaCl. A total of 1235 differentially expressed genes (DEGs) including 740 up- and 495 down-regulated genes were identified. Functional annotation analyses showed that the DEGs were related to signal transduction, osmolyte synthesis, transcription factors, and antioxidant proteins. Taken together, this study contributes to our understanding of the mechanism of salt tolerance in Chinese cabbage and provides valuable information for further improvement of salt tolerance in Chinese cabbage breeding programs.
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15
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Cao XQ, Jiang ZH, Yi YY, Yang Y, Ke LP, Pei ZM, Zhu S. Biotic and Abiotic Stresses Activate Different Ca 2+ Permeable Channels in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2017; 8:83. [PMID: 28197161 PMCID: PMC5281638 DOI: 10.3389/fpls.2017.00083] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 01/16/2017] [Indexed: 05/23/2023]
Abstract
To survive, plants must respond rapidly and effectively to various stress factors, including biotic and abiotic stresses. Salinity stress triggers the increase of cytosolic free Ca2+ concentration ([Ca2+]i) via Ca2+ influx across the plasma membrane, as well as bacterial flg22 and plant endogenous peptide Pep1. However, the interaction between abiotic stress-induced [Ca2+]i increases and biotic stress-induced [Ca2+]i increases is still not clear. Employing an aequorin-based Ca2+ imaging assay, in this work, we investigated the [Ca2+]i changes in response to flg22, Pep1, and NaCl treatments in Arabidopsis thaliana. We observed an additive effect on the [Ca2+]i increase which induced by flg22, Pep1, and NaCl. Our results indicate that biotic and abiotic stresses may activate different Ca2+ permeable channels. Further, calcium signal induced by biotic and abiotic stresses was independent in terms of spatial and temporal patterning.
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Affiliation(s)
- Xiao-Qiang Cao
- College of Life and Environmental Sciences, Hangzhou Normal UniversityHangzhou, China
| | - Zhong-Hao Jiang
- College of Life and Environmental Sciences, Hangzhou Normal UniversityHangzhou, China
- Department of Biology, Duke University, DurhamNC, USA
| | - Yan-Yan Yi
- College of Life and Environmental Sciences, Hangzhou Normal UniversityHangzhou, China
| | - Yi Yang
- College of Life and Environmental Sciences, Hangzhou Normal UniversityHangzhou, China
| | - Li-Ping Ke
- Key Laboratory of Plant Secondary Metabolism and Regulation of Zhejiang Province, College of Life Sciences, Zhejiang Sci-Tech UniversityHangzhou, China
| | - Zhen-Ming Pei
- College of Life and Environmental Sciences, Hangzhou Normal UniversityHangzhou, China
- Department of Biology, Duke University, DurhamNC, USA
| | - Shan Zhu
- College of Life and Environmental Sciences, Hangzhou Normal UniversityHangzhou, China
- *Correspondence: Shan Zhu,
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16
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Ni J, Yu Z, Du G, Zhang Y, Taylor JL, Shen C, Xu J, Liu X, Wang Y, Wu Y. Heterologous Expression and Functional Analysis of Rice GLUTAMATE RECEPTOR-LIKE Family Indicates its Role in Glutamate Triggered Calcium Flux in Rice Roots. RICE (NEW YORK, N.Y.) 2016; 9:9. [PMID: 26956369 PMCID: PMC4783324 DOI: 10.1186/s12284-016-0081-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2015] [Accepted: 02/20/2016] [Indexed: 05/19/2023]
Abstract
BACKGROUND Tremendous progress has been made in understanding the functions of the GLUTAMATE RECEPTOR-LIKE (GLR) family in Arabidopsis. Still, the functions of OsGLRs in rice, especially the ion channel activities, are largely unknown. RESULTS Using the aequorin-based luminescence imaging system, we screened the specificity of amino acids involved in the induction of Ca(2+) flux in rice roots. Of all the amino acids tested, glutamate (Glu) was the only one to trigger Ca(2+) flux significantly in rice roots. Detailed analysis showed a dose response of Ca(2+) increase to different concentrations of Glu. In addition, the Ca(2+) spike response to Glu was rapid, within 20 s after the application. A desensitization assay and pharmacological tests showed that the Glu-triggered Ca(2+) flux is mediated by OsGLRs. Whole genome analysis identified 13 OsGLR genes in rice, and these genes have various expression patterns in different tissues. Subcellular localization studies showed that all the OsGLRs examined are likely localized to the plasma membrane. Bacteria growth assays showed that at least OsGLR2.1 and OsGLR3.2 have the potential to mediate ion uptake in bacteria. Further analysis using Fura-2-based Ca(2+) imaging revealed a Glu-triggered Ca(2+) increase in OsGLR2.1-expressing human embryonic kidney (HEK) cells. CONCLUSIONS Our work provides a molecular basis for investigating mechanisms of Glu-triggered Ca(2+) flux in rice.
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Affiliation(s)
- Jun Ni
- />College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310018 China
| | - Zhiming Yu
- />College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310018 China
| | - Guankui Du
- />Department of Biochemistry, Hainan Medical College, Haikou, 571199 China
| | - Yanyan Zhang
- />College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310018 China
| | - Jemma L. Taylor
- />School of Life Sciences, Gibbet Hill Campus, University of Warwick, Coventry, CV4 7AL UK
| | - Chenjia Shen
- />College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310018 China
| | - Jing Xu
- />College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310018 China
| | - Xunyan Liu
- />College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310018 China
| | - Yifeng Wang
- />State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, 311400 China
| | - Yunrong Wu
- />State Key Laboratory of Plant Physiology and Biochemistry, College of Life Science, Zhejiang University, Hangzhou, 310058 China
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17
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Chen C, Sun X, Duanmu H, Zhu D, Yu Y, Cao L, Liu A, Jia B, Xiao J, Zhu Y. GsCML27, a Gene Encoding a Calcium-Binding Ef-Hand Protein from Glycine soja, Plays Differential Roles in Plant Responses to Bicarbonate, Salt and Osmotic Stresses. PLoS One 2015; 10:e0141888. [PMID: 26550992 PMCID: PMC4638360 DOI: 10.1371/journal.pone.0141888] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2015] [Accepted: 10/14/2015] [Indexed: 01/29/2023] Open
Abstract
Calcium, as the most widely accepted messenger, plays an important role in plant stress responses through calcium-dependent signaling pathways. The calmodulin-like family genes (CMLs) encode Ca2+ sensors and function in signaling transduction in response to environmental stimuli. However, until now, the function of plant CML proteins, especially soybean CMLs, is largely unknown. Here, we isolated a Glycine soja CML protein GsCML27, with four conserved EF-hands domains, and identified it as a calcium-binding protein through far-UV CD spectroscopy. We further found that expression of GsCML27 was induced by bicarbonate, salt and osmotic stresses. Interestingly, ectopic expression of GsCML27 in Arabidopsis enhanced plant tolerance to bicarbonate stress, but decreased the salt and osmotic tolerance during the seed germination and early growth stages. Furthermore, we found that ectopic expression of GsCML27 decreases salt tolerance through modifying both the cellular ionic (Na+, K+) content and the osmotic stress regulation. GsCML27 ectopic expression also decreased the expression levels of osmotic stress-responsive genes. Moreover, we also showed that GsCML27 localized in the whole cell, including cytoplasm, plasma membrane and nucleus in Arabidopsis protoplasts and onion epidermal cells, and displayed high expression in roots and embryos. Together, these data present evidence that GsCML27 as a Ca2+-binding EF-hand protein plays a role in plant responses to bicarbonate, salt and osmotic stresses.
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Affiliation(s)
- Chao Chen
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin, P.R. China
| | - Xiaoli Sun
- Agronomy College, Heilongjiang Bayi Agricultural University, Daqing, P.R. China
| | - Huizi Duanmu
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin, P.R. China
| | - Dan Zhu
- College of Life Science, Qingdao Agricultural University, Qingdao, P.R. China
| | - Yang Yu
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin, P.R. China
| | - Lei Cao
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin, P.R. China
| | - Ailin Liu
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin, P.R. China
| | - Bowei Jia
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin, P.R. China
| | - Jialei Xiao
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin, P.R. China
| | - Yanming Zhu
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin, P.R. China
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18
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Zhang Y, Wang Y, Taylor JL, Jiang Z, Zhang S, Mei F, Wu Y, Wu P, Ni J. Aequorin-based luminescence imaging reveals differential calcium signalling responses to salt and reactive oxygen species in rice roots. JOURNAL OF EXPERIMENTAL BOTANY 2015; 66:2535-45. [PMID: 25754405 PMCID: PMC4986864 DOI: 10.1093/jxb/erv043] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
It is well established that both salt and reactive oxygen species (ROS) stresses are able to increase the concentration of cytosolic free Ca(2+) ([Ca(2+)]i), which is caused by the flux of calcium (Ca(2+)). However, the differences between these two processes are largely unknown. Here, we introduced recombinant aequorin into rice (Oryza sativa) and examined the change in [Ca(2+)]i in response to salt and ROS stresses. The transgenic rice harbouring aequorin showed strong luminescence in roots when treated with exogenous Ca(2+). Considering the histological differences in roots between rice and Arabidopsis, we reappraised the discharging solution, and suggested that the percentage of ethanol should be 25%. Different concentrations of NaCl induced immediate [Ca(2+)]i spikes with the same durations and phases. In contrast, H₂O₂ induced delayed [Ca(2+)]i spikes with different peaks according to the concentrations of H₂O₂. According to the Ca(2+) inhibitor research, we also showed that the sources of Ca(2+) induced by NaCl and H₂O₂ are different. Furthermore, we evaluated the contribution of [Ca(2+)]i responses in the NaCl- and H₂O₂-induced gene expressions respectively, and present a Ca(2+)- and H₂O₂-mediated molecular signalling model for the initial response to NaCl in rice.
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Affiliation(s)
- Yanyan Zhang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Yifeng Wang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Science, Zhejiang University, Hangzhou 310058, China
| | - Jemma L Taylor
- School of Life Sciences, Gibbet Hill Campus, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Zhonghao Jiang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Shu Zhang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Fengling Mei
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Yunrong Wu
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Science, Zhejiang University, Hangzhou 310058, China
| | - Ping Wu
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Science, Zhejiang University, Hangzhou 310058, China
| | - Jun Ni
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
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19
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Deinlein U, Stephan AB, Horie T, Luo W, Xu G, Schroeder JI. Plant salt-tolerance mechanisms. TRENDS IN PLANT SCIENCE 2014; 19:371-9. [PMID: 24630845 PMCID: PMC4041829 DOI: 10.1016/j.tplants.2014.02.001] [Citation(s) in RCA: 774] [Impact Index Per Article: 77.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Revised: 01/30/2014] [Accepted: 02/03/2014] [Indexed: 05/18/2023]
Abstract
Crop performance is severely affected by high salt concentrations in soils. To engineer more salt-tolerant plants it is crucial to unravel the key components of the plant salt-tolerance network. Here we review our understanding of the core salt-tolerance mechanisms in plants. Recent studies have shown that stress sensing and signaling components can play important roles in regulating the plant salinity stress response. We also review key Na+ transport and detoxification pathways and the impact of epigenetic chromatin modifications on salinity tolerance. In addition, we discuss the progress that has been made towards engineering salt tolerance in crops, including marker-assisted selection and gene stacking techniques. We also identify key open questions that remain to be addressed in the future.
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Affiliation(s)
- Ulrich Deinlein
- Division of Biological Sciences, Food and Fuel for the 21st Century Center, University of California San Diego, La Jolla, CA 92093-0116, USA
| | - Aaron B Stephan
- Division of Biological Sciences, Food and Fuel for the 21st Century Center, University of California San Diego, La Jolla, CA 92093-0116, USA
| | - Tomoaki Horie
- Division of Applied Biology, Faculty of Textile Science and Technology, Shinshu University, Nagano 386-8567, Japan
| | - Wei Luo
- Division of Biological Sciences, Food and Fuel for the 21st Century Center, University of California San Diego, La Jolla, CA 92093-0116, USA; State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOA Key Laboratory of Plant Nutrition and Fertilization in Lower-Middle Reaches of the Yangtze River, Nanjing Agricultural University, Nanjing 210095, China
| | - Guohua Xu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOA Key Laboratory of Plant Nutrition and Fertilization in Lower-Middle Reaches of the Yangtze River, Nanjing Agricultural University, Nanjing 210095, China
| | - Julian I Schroeder
- Division of Biological Sciences, Food and Fuel for the 21st Century Center, University of California San Diego, La Jolla, CA 92093-0116, USA.
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