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Liu H, Yu M, Zhou S, Wang Y, Xia Z, Wang Z, Song B, An M, Wu Y. Unveiling novel anti-viral mechanisms of ε-poly-l-lysine on tobacco mosaic virus-infected Nicotiana tabacum through microRNA and transcriptome sequencing. Int J Biol Macromol 2024; 268:131628. [PMID: 38631577 DOI: 10.1016/j.ijbiomac.2024.131628] [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: 02/05/2024] [Revised: 03/30/2024] [Accepted: 04/13/2024] [Indexed: 04/19/2024]
Abstract
MicroRNAs (miRNAs) play important roles in plant defense against various pathogens. ε-poly-l-lysine (ε-PL), a natural anti-microbial peptide produced by microorganisms, effectively suppresses tobacco mosaic virus (TMV) infection. To investigate the anti-viral mechanism of ε-PL, the expression profiles of miRNAs in TMV-infected Nicotiana tabacum after ε-PL treatment were analyzed. The results showed that the expression levels of 328 miRNAs were significantly altered by ε-PL. Degradome sequencing was used to identify their target genes. Integrative analysis of miRNAs target genes and gene-enriched GO/KEGG pathways indicated that ε-PL regulates the expression of miRNAs involved in critical pathways of plant hormone signal transduction, host defense response, and plant pathogen interaction. Subsequently, virus induced gene silencing combined with the short tandem targets mimic technology was used to analyze the function of these miRNAs and their target genes. The results indicated that silencing miR319 and miR164 reduced TMV accumulation in N. benthamiana, indicating the essential roles of these miRNAs and their target genes during ε-PL-mediated anti-viral responses. Collectively, this study reveals that microbial source metabolites can inhibit plant viruses by regulating crucial host miRNAs and further elucidate anti-viral mechanisms of ε-PL.
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Affiliation(s)
- He Liu
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning, China; State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang, Guizhou 550025, China
| | - Miao Yu
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning, China
| | - Shidong Zhou
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning, China
| | - Yan Wang
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning, China
| | - Zihao Xia
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning, China
| | - Zhiping Wang
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning, China
| | - Baoan Song
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang, Guizhou 550025, China
| | - Mengnan An
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning, China.
| | - Yuanhua Wu
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning, China.
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Li J, Liu X, Ahmad N, Wang Y, Ge H, Wang Y, Liu W, Li X, Wang N, Wang F, Dong Y. CePP2C19 confers tolerance to drought by regulating the ABA sensitivity in Cyperus esculentus. BMC PLANT BIOLOGY 2023; 23:524. [PMID: 37898801 PMCID: PMC10612301 DOI: 10.1186/s12870-023-04522-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 10/10/2023] [Indexed: 10/30/2023]
Abstract
BACKGROUND Tiger nut (Cyperus esculentus) is widely known as an additional source of food, oil and feed worldwide. The agricultural production of tiger nut has been greatly hindered by drought stress, reducing both yield and quality. Protein phosphatase 2 C (PP2Cs) plays an important role in plant responses to drought stress however, the molecular mechanism of PP2Cs in tiger nuts still unclear. RESULTS In this study, we identified a putative group A PP2C-encoding gene (CePP2C19) from tiger nut using transcriptome analysis, which is highly induced by drought stress. The transient expression assay suggested that CePP2C19 was localized to nucleus. Furthermore, the interaction between CePP2C19 and CePYR1, a coreceptor for ABA signaling, was first detected using a yeast two-hybrid assay and then verified using a bimolecular fluorescence complementation (BiFC) analysis. In addition, the transgenic Arabidopsis lines overexpressing CePP2C19 exhibited extreme tolerance to ABA and mannitol stresses during seed germination and root growth. At the mature stage, overexpression of CePP2C19 resulted in a higher tolerance to drought stress in transgenic Arabidopsis, as confirmed by a visible phenotype and several physiological parameters. Noticeably, the silencing of CePP2C19 by virus-induced gene silencing (VIGS) showed obvious reduction in drought tolerance in tiger nut plants. CONCLUSIONS The CePP2C19 emerges as a pivotal gene involved in the ABA signaling pathway, which likely reduce ABA sensitivity and thus enhances drought tolerance in Cyperus esculentus.
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Affiliation(s)
- Jia Li
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, China
| | - Xinyi Liu
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, China
| | - Naveed Ahmad
- Joint Center for Single Cell Biology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yifei Wang
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, China
| | - Hengshuo Ge
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, China
| | - Yijin Wang
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, China
| | - Weican Liu
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, China
| | - Xiaowei Li
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, China
| | - Nan Wang
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, China
| | - Fawei Wang
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, China
| | - Yuanyuan Dong
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, China.
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Zhu L, Hu J, Li R, Liu C, Jiang Y, Liu T, Liu M, Zhao M, Wang Y, Wang K, Zhang M. Transcriptome-Wide Integrated Analysis of the PgGT25-04 Gene in Controlling Ginsenoside Biosynthesis in Panax ginseng. PLANTS (BASEL, SWITZERLAND) 2023; 12:1980. [PMID: 37653897 PMCID: PMC10224475 DOI: 10.3390/plants12101980] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 05/10/2023] [Accepted: 05/10/2023] [Indexed: 08/13/2023]
Abstract
Panax ginseng is a valuable medicinal herb of the Araliaceae family with various pharmacological activities. The Trihelix transcription factors family is involved in growth and secondary metabolic processes in plants, but no studies have been reported on the involvement of Trihelix genes in secondary metabolic processes in ginseng. In this study, weighted co-expression network analysis, correlation analysis between PgGTs and ginsenosides and key enzyme genes, and interaction network analysis between PgGTs and key enzyme genes were used to screen out the PgGT25-04 gene, which was negatively correlated with ginsenoside synthesis. Using ABA treatment of ginseng hair roots, PgGT genes were found to respond to ABA signals. Analysis of the sequence characteristics and expression pattern of the PgGT25-04 gene in ginseng revealed that its expression is spatiotemporally specific. The interfering vector pBI121-PgGT25-04 containing the PgGT25-04 gene was constructed, and the ginseng adventitious roots were transformed using the Agrobacterium-mediated method to obtain the pBI121-PgGT25-04 positive hairy root monocot line. The saponin contents of positive ginseng hair roots were measured by HPLC, and the changes in PgGT25-04 and key enzyme genes in positive ginseng hair roots were detected via fluorescence quantitative RT-PCR. These results preliminarily identified the role of the PgGT25-04 gene in the secondary metabolism of ginseng in Jilin to provide a theoretical basis for the study of Trihelix transcription factors in Panax ginseng.
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Affiliation(s)
- Lei Zhu
- College of Life Science, Jilin Agricultural University, Changchun 130118, China; (L.Z.); (J.H.); (R.L.); (C.L.); (Y.J.); (T.L.); (M.L.); (M.Z.); (Y.W.)
| | - Jian Hu
- College of Life Science, Jilin Agricultural University, Changchun 130118, China; (L.Z.); (J.H.); (R.L.); (C.L.); (Y.J.); (T.L.); (M.L.); (M.Z.); (Y.W.)
| | - Ruiqi Li
- College of Life Science, Jilin Agricultural University, Changchun 130118, China; (L.Z.); (J.H.); (R.L.); (C.L.); (Y.J.); (T.L.); (M.L.); (M.Z.); (Y.W.)
| | - Chang Liu
- College of Life Science, Jilin Agricultural University, Changchun 130118, China; (L.Z.); (J.H.); (R.L.); (C.L.); (Y.J.); (T.L.); (M.L.); (M.Z.); (Y.W.)
| | - Yang Jiang
- College of Life Science, Jilin Agricultural University, Changchun 130118, China; (L.Z.); (J.H.); (R.L.); (C.L.); (Y.J.); (T.L.); (M.L.); (M.Z.); (Y.W.)
| | - Tao Liu
- College of Life Science, Jilin Agricultural University, Changchun 130118, China; (L.Z.); (J.H.); (R.L.); (C.L.); (Y.J.); (T.L.); (M.L.); (M.Z.); (Y.W.)
| | - Mingming Liu
- College of Life Science, Jilin Agricultural University, Changchun 130118, China; (L.Z.); (J.H.); (R.L.); (C.L.); (Y.J.); (T.L.); (M.L.); (M.Z.); (Y.W.)
| | - Mingzhu Zhao
- College of Life Science, Jilin Agricultural University, Changchun 130118, China; (L.Z.); (J.H.); (R.L.); (C.L.); (Y.J.); (T.L.); (M.L.); (M.Z.); (Y.W.)
- Jilin Engineering Research Center Ginseng Genetic Resources Development and Utilization, Changchun 130118, China
| | - Yi Wang
- College of Life Science, Jilin Agricultural University, Changchun 130118, China; (L.Z.); (J.H.); (R.L.); (C.L.); (Y.J.); (T.L.); (M.L.); (M.Z.); (Y.W.)
- Jilin Engineering Research Center Ginseng Genetic Resources Development and Utilization, Changchun 130118, China
| | - Kangyu Wang
- College of Life Science, Jilin Agricultural University, Changchun 130118, China; (L.Z.); (J.H.); (R.L.); (C.L.); (Y.J.); (T.L.); (M.L.); (M.Z.); (Y.W.)
- Jilin Engineering Research Center Ginseng Genetic Resources Development and Utilization, Changchun 130118, China
| | - Meiping Zhang
- College of Life Science, Jilin Agricultural University, Changchun 130118, China; (L.Z.); (J.H.); (R.L.); (C.L.); (Y.J.); (T.L.); (M.L.); (M.Z.); (Y.W.)
- Jilin Engineering Research Center Ginseng Genetic Resources Development and Utilization, Changchun 130118, China
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MdPP2C24/37, Protein Phosphatase Type 2Cs from Apple, Interact with MdPYL2/12 to Negatively Regulate ABA Signaling in Transgenic Arabidopsis. Int J Mol Sci 2022; 23:ijms232214375. [PMID: 36430851 PMCID: PMC9696740 DOI: 10.3390/ijms232214375] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 11/15/2022] [Accepted: 11/16/2022] [Indexed: 11/22/2022] Open
Abstract
The phytohormone abscisic acid (ABA) plays an important role in the ability of plants to cope with drought stress. As core members of the ABA signaling pathway, protein phosphatase type 2Cs (PP2Cs) have been reported in many species. However, the functions of MdPP2Cs in apple (Malus domestica) are unclear. In this study, we identified two PP2C-encoding genes, MdPP2C24/37, with conserved PP2C catalytic domains, using sequence alignment. The nucleus-located MdPP2C24/37 genes were induced by ABA or mannitol in apple. Genetic analysis revealed that overexpression of MdPP2C24/37 in Arabidopsis thaliana led to plant insensitivity to ABA or mannitol treatment, in terms of inhibiting seed germination and overall seedling establishment. The expression of stress marker genes was upregulated in MdPP2C24/37 transgenic lines. At the same time, MdPP2C24/37 transgenic lines displayed inhibited ABA-mediated stomatal closure, which led to higher water loss rates. Moreover, when exposed to drought stress, chlorophyll levels decreased and MDA and H2O2 levels accumulated in the MdPP2C24/37 transgenic lines. Further, MdPP2C24/37 interacted with MdPYL2/12 in vitro and vivo. The results indicate that MdPP2C24/37 act as negative regulators in response to ABA-mediated drought resistance.
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Yue K, Lingling L, Xie J, Coulter JA, Luo Z. Synthesis and regulation of auxin and abscisic acid in maize. PLANT SIGNALING & BEHAVIOR 2021; 16:1891756. [PMID: 34057034 PMCID: PMC8205056 DOI: 10.1080/15592324.2021.1891756] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Indole-3-acetic acid (IAA), the primary auxin in higher plants, and abscisic acid (ABA) play crucial roles in the ability of maize (Zea mays L.) to acclimatize to various environments by mediating growth, development, defense and nutrient allocation. Although understanding the biochemical reactions for IAA and ABA biosynthesis and signal transduction has progressed, the mechanisms by which auxin and ABA are synthesized and transduced in maize have not been fully elucidated to date. The synthesis and signal transduction pathway of IAA and ABA in maize can be analyzed using an existing model. This article focuses on the research progress toward understanding the synthesis and signaling pathways of IAA and ABA, as well as IAA and ABA regulation of maize growth, providing insight for future development and the significance of IAA and ABA for maize improvement.
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Affiliation(s)
- Kai Yue
- Gansu Provincial Key Laboratory of Aridland Crop Science, Lanzhou, China
- College of Agronomy, Gansu Agricultural University, Lanzhou, China
| | - Li Lingling
- Gansu Provincial Key Laboratory of Aridland Crop Science, Lanzhou, China
- College of Agronomy, Gansu Agricultural University, Lanzhou, China
- CONTACT Lingling Li College of Agronomy/Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China
| | - Junhong Xie
- Gansu Provincial Key Laboratory of Aridland Crop Science, Lanzhou, China
- College of Agronomy, Gansu Agricultural University, Lanzhou, China
| | - Jeffrey A. Coulter
- Department of Agronomy and Plant Genetics, University of Minnesota, St. Paul, MN, USA
| | - Zhuzhu Luo
- College of Resource and Environment, Gansu Agricultural University, Lanzhou, China
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6
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Ko DK, Brandizzi F. A temporal hierarchy underpins the transcription factor-DNA interactome of the maize UPR. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2021; 105:254-270. [PMID: 33098715 PMCID: PMC7942231 DOI: 10.1111/tpj.15044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 09/18/2020] [Accepted: 09/23/2020] [Indexed: 05/10/2023]
Abstract
Adverse environmental conditions reduce crop productivity and often increase the load of unfolded or misfolded proteins in the endoplasmic reticulum (ER). This potentially lethal condition, known as ER stress, is buffered by the unfolded protein response (UPR), a set of signaling pathways designed to either recover ER functionality or ignite programmed cell death. Despite the biological significance of the UPR to the life of the organism, the regulatory transcriptional landscape underpinning ER stress management is largely unmapped, especially in crops. To fill this significant knowledge gap, we performed a large-scale systems-level analysis of the protein-DNA interaction (PDI) network in maize (Zea mays). Using 23 promoter fragments of six UPR marker genes in a high-throughput enhanced yeast one-hybrid assay, we identified a highly interconnected network of 262 transcription factors (TFs) associated with significant biological traits and 831 PDIs underlying the UPR. We established a temporal hierarchy of TF binding to gene promoters within the same family as well as across different families of TFs. Cistrome analysis revealed the dynamic activities of a variety of cis-regulatory elements (CREs) in ER stress-responsive gene promoters. By integrating the cistrome results into a TF network analysis, we mapped a subnetwork of TFs associated with a CRE that may contribute to UPR management. Finally, we validated the role of a predicted network hub gene using the Arabidopsis system. The PDIs, TF networks, and CREs identified in our work are foundational resources for understanding transcription-regulatory mechanisms in the stress responses and crop improvement.
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Affiliation(s)
- Dae Kwan Ko
- MSU-DOE Plant Research Lab, Michigan State University, East Lansing, Michigan, 48824
- Great Lakes Bioenergy Research Center, Michigan State University, East Lansing, Michigan, 48824
| | - Federica Brandizzi
- MSU-DOE Plant Research Lab, Michigan State University, East Lansing, Michigan, 48824
- Department of Plant Biology, Michigan State University, East Lansing, Michigan, 48824
- Great Lakes Bioenergy Research Center, Michigan State University, East Lansing, Michigan, 48824
- Correspondence:
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7
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Fan K, Yuan S, Chen J, Chen Y, Li Z, Lin W, Zhang Y, Liu J, Lin W. Molecular evolution and lineage-specific expansion of the PP2C family in Zea mays. PLANTA 2019; 250:1521-1538. [PMID: 31346803 DOI: 10.1007/s00425-019-03243-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 07/16/2019] [Indexed: 05/19/2023]
Abstract
97 ZmPP2Cs were clustered into 10 subfamilies with biased subfamily evolution and lineage-specific expansion. Segmental duplication after the divergence of maize and sorghum might have led to primary expansion of ZmPP2Cs. The protein phosphatase 2C (PP2C) enzymes control many stress responses and developmental processes in plants. In Zea mays, a comprehensive understanding of the evolution and expansion of the PP2C family is still lacking. In the current study, 97 ZmPP2Cs were identified and clustered into 10 subfamilies. Through the analysis of the PP2C family in monocots, the ZmPP2C subfamilies displayed biased subfamily molecular evolution and lineage-specific expansion, as evidenced by their differing numbers of member genes, expansion and evolutionary rates, conserved subdomains, chromosomal distributions, expression levels, responsive-regulatory elements and regulatory networks. Moreover, while segmental duplication events have caused the primary expansion of the ZmPP2Cs, the majority of their diversification occurred following the additional whole-genome duplication that took place after the divergence of maize and sorghum (Sorghum bicolor). After this event, the PP2C subfamilies showed asymmetric evolutionary rates, with the D, F2 and H subfamily likely the most closely to resemble its ancestral subfamily's genes. These findings could provide novel insights into the molecular evolution and expansion of the PP2C family in maize, and lay the foundation for the functional analysis of these enzymes in maize and related monocots.
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Affiliation(s)
- Kai Fan
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou, 35002, China
| | - Shuna Yuan
- Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences/Danzhou Investigation and Experiment Station of Tropical Crops, Ministry of Agriculture, Danzhou, 571737, China
| | - Jie Chen
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou, 35002, China
| | - Yunrui Chen
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou, 35002, China
| | - Zhaowei Li
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou, 35002, China
| | - Weiwei Lin
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou, 35002, China
| | - Yongqiang Zhang
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou, 35002, China
| | - Jianping Liu
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou, 35002, China
| | - Wenxiong Lin
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
- Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou, 35002, China.
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8
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Tao F, Liu H. Molecular Dynamics Simulations Reveal Differentiated Context-Dependent Conformational Dynamics of Two Proteins of the Same Family. J Phys Chem B 2018; 122:10686-10699. [PMID: 30407824 DOI: 10.1021/acs.jpcb.8b08468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The Arabidopsis pyrabactin resistant 1 (PYR1)-like family of proteins (PYLs) are receptors of abscisic acid (ABA), an essential small signaling molecule in plants. Here, we report a comparative molecular dynamics (MD) study on two PYL members, PYR1 and PYL10, which, despite their highly similar sequences and structures, have been suggested to belong to two different subclasses of PYLs, one being dimeric and relying on binding to ABA to inhibit downstream type 2C protein phosphatases (PP2Cs) and the other being monomeric and able to constitutively inhibit downstream PP2Cs without ABA. MD simulations have been carried out on these proteins in various monomeric or complexation states. Analyses of the simulations unambiguously confirm that ABA has large effects on the conformational dynamics of PYR1 but not PYL10, whereas a downstream PP2C has much larger effects on PYL10 than on PYR1. The differentiated effects are consistent with the functional differences between the two proteins. Potential of mean forces (PMFs) calculated by umbrella sampling showed that binding to ABA strengthens the PYR1-PP2C complex, increasing the PMF change for dissociation from 7.5 to 12.0 kcal mol-1. On the other hand, the same PMF change for an apo-PYL10-PP2C complex was computed to be 9.5 kcal mol-1, suggesting stronger binding in apo-PYL10-PP2C than in apo-PYR1-PP2C. Several specific sequence features that may contribute to the functional differentiation between PYR1 and PYL10 are suggested based on the intersubunit residue-residue contacts occurred in the simulations.
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Affiliation(s)
- Feng Tao
- School of Life Sciences , University of Science and Technology of China , 230027 Hefei , Anhui , China
| | - Haiyan Liu
- School of Life Sciences , University of Science and Technology of China , 230027 Hefei , Anhui , China.,Hefei National Laboratory for Physical Sciences at the Microscales , 230027 Hefei , Anhui , China
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9
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Li G, Hu X, Hou L, Cao L, Wang Q, Wang D, Mu X, Zhang Y, Zhou X, Zhao Y, Xie CG. Molecular identification of BrHAB2a, one of the two AtHAB2-like proteins in Brassica rapa, is an important component of ABA signaling. Biochem Biophys Res Commun 2018; 503:495-500. [PMID: 29704501 DOI: 10.1016/j.bbrc.2018.04.185] [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: 04/23/2018] [Accepted: 04/23/2018] [Indexed: 10/28/2022]
Abstract
Abscisic acid (ABA) signaling is a vital physiological step that is used by many land plants to fight against environmental stress. As components of the linear ABA signaling pathway, clade A protein phosphatases type 2C (PP2C-As) are mainly inhibited by PYRABACTIN RESISTANCE1/PYR1-LIKE/REGULATORY COMPONENTS OF ABA RECEPTORS (PYLs)-type receptors upon their binding to ABA. Here, we show that the genome of Brassica rapa encodes 14 putative clade A PP2C-like proteins (BrPP2C-As). Two of these BrPP2C-As, Bra025964 and Bra016595, show high similarity to the HAB2 (Homology to ABI2) protein in Arabidopsis. RNAseq data reveal that nearly all BrPP2C-As, like BrHAB2a (Bra025964) and BrHAB2b (Bra016595), were highly expressed in at least one tissue. Overexpression of BrHAB2a conferred ABA insensitivity to Arabidopsis thaliana seedlings. Furthermore, the phosphatase activity of BrHAB2a could be inhibited by AtPYL1 or BrPYL1 in the presence of ABA. Overall, these results suggest that BrHAB2a is a functional PP2C-A like protein phosphotase and a key component of ABA signaling in Brassica rapa.
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Affiliation(s)
- Guoqing Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Science, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Xiaochen Hu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Science, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Lulu Hou
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Science, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Lin Cao
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Science, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Qinhu Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Science, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Dandan Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Science, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Xiaoqian Mu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Science, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Yanfeng Zhang
- Hybrid Rapeseed Research Centre of Shaanxi Province, Yangling, Shaanxi, 712100, China
| | - Xiaona Zhou
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Science, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Yang Zhao
- Shanghai Center for Plant Stress Biology, and CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Chang Gen Xie
- Northwest A&F University, No. 3 Taicheng Road, Yangling 712100 Shaanxi, China.
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10
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Wang YG, Fu FL, Yu HQ, Hu T, Zhang YY, Tao Y, Zhu JK, Zhao Y, Li WC. Interaction network of core ABA signaling components in maize. PLANT MOLECULAR BIOLOGY 2018; 96:245-263. [PMID: 29344831 DOI: 10.1007/s11103-017-0692-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Accepted: 12/06/2017] [Indexed: 05/08/2023]
Abstract
We defined a comprehensive core ABA signaling network in monocot maize, including the gene expression, subcellular localization and interaction network of ZmPYLs, ZmPP2Cs, ZmSnRK2s and the putative substrates. The phytohormone abscisic acid (ABA) plays an important role in plant developmental processes and abiotic stress responses. In Arabidopsis, ABA is sensed by the PYL ABA receptors, which leads to binding of the PP2C protein phosphatase and activation of the SnRK2 protein kinases. These components functioning diversely and redundantly in ABA signaling are little known in maize. Using Arabidopsis pyl112458 and snrk2.2/3/6 mutants, we identified several ABA-responsive ZmPYLs and ZmSnRK2s, and also ZmPP2Cs. We showed the gene expression, subcellular localization and interaction network of ZmPYLs, ZmPP2Cs, and ZmSnRK2s, and the isolation of putative ZmSnRK2 substrates by mass spectrometry in monocot maize. We found that the ABA dependency of PYL-PP2C interactions is contingent on the identity of the PP2Cs. Among 238 candidate substrates for ABA-activated protein kinases, 69 are putative ZmSnRK2 substrates. Besides homologs of previously reported putative AtSnRK2 substrates, 23 phosphoproteins have not been discovered in the dicot Arabidopsis. Thus, we have defined a comprehensive core ABA signaling network in monocot maize and shed new light on ABA signaling.
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Affiliation(s)
- Ying-Ge Wang
- Maize Research Institute, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Feng-Ling Fu
- Maize Research Institute, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Hao-Qiang Yu
- Maize Research Institute, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Tao Hu
- Shanghai Center for Plant Stress Biology, and CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Yuan-Yuan Zhang
- Maize Research Institute, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Yi Tao
- Maize Research Institute, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Jian-Kang Zhu
- Shanghai Center for Plant Stress Biology, and CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Yang Zhao
- Shanghai Center for Plant Stress Biology, and CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China.
| | - Wan-Chen Li
- Maize Research Institute, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.
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11
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He Z, Zhong J, Sun X, Wang B, Terzaghi W, Dai M. The Maize ABA Receptors ZmPYL8, 9, and 12 Facilitate Plant Drought Resistance. FRONTIERS IN PLANT SCIENCE 2018; 9:422. [PMID: 29670640 PMCID: PMC5893742 DOI: 10.3389/fpls.2018.00422] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Accepted: 03/16/2018] [Indexed: 05/04/2023]
Abstract
Drought is one of the major abiotic stresses affecting world agriculture. Breeding drought-resistant crops is one of the most important challenges for plant biologists. PYR1/PYL/RCARs, which encode the abscisic acid (ABA) receptors, play pivotal roles in ABA signaling, but how these genes function in crop drought response remains largely unknown. Here we identified 13 PYL family members in maize (ZmPYL1-13). Changes in expression of these genes under different stresses indicated that ZmPYLs played important roles in responding to multiple abiotic stresses. Transgenic analyses of ZmPYL genes in Arabidopsis showed that overexpression of ZmPYL3, ZmPYL9, ZmPYL10, and ZmPYL13 significantly enhanced the sensitivity of transgenic plants to ABA. Additionally, transgenic lines overexpressing ZmPYL8, ZmPYL9, and ZmPYL12 were more resistant to drought. Accumulation of proline and enhanced expression of drought-related marker genes in transgenic lines further confirmed the positive roles of ZmPYL genes in plant drought resistance. Association analyses with a panel of 368 maize inbred lines identified natural variants in ZmPYL8 and ZmPYL12 that were significantly associated with maize drought resistance. Our results deepen the knowledge of the function of maize PYL genes in responses to abiotic stresses, and the natural variants identified in ZmPYL genes may serve as potential molecular markers for breeding drought-resistant maize cultivars.
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Affiliation(s)
- Zhenghua He
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Food Crops Institute, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Junwei Zhong
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
| | - Xiaopeng Sun
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
| | - Bingcai Wang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
| | - William Terzaghi
- Department of Biology, Wilkes University, Wilkes-Barre, PA, United States
| | - Mingqiu Dai
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
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12
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Sun J, Wang P, Zhou T, Rong J, Jia H, Liu Z. Transcriptome Analysis of the Effects of Shell Removal and Exogenous Gibberellin on Germination of Zanthoxylum Seeds. Sci Rep 2017; 7:8521. [PMID: 28819199 PMCID: PMC5561108 DOI: 10.1038/s41598-017-07424-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 06/26/2017] [Indexed: 01/09/2023] Open
Abstract
The zanthoxylum seeds are oil-rich and have a very thick, dense and oily shell. In the natural conditions the seeds have a very low germination rate. Prior to treatment with GAs to promote germination, the seeds were usually soaked in sulfuric acid to remove shells easily. A high-throughput sequencing of mRNAs was performed to investigate the effects of the above treatments on the germination of zanthoxylum seeds. Seven libraries were assembled into 100,982 unigenes and 59,509 unigenes were annotated. We focused on the expression profiles of the key genes related to the oil metabolisms and hormone regulations during seed germination. Our data indicated the endogenous ABA of seeds was rich. The effects that the exogenous GAs promoted germination were apparent in the secong day of germination. Especially, for the first time our results indicated the exogenous GAs lowered the aerobic metabolism including the oil metabolisms during imbibition. We inferred that the exogenous GAs had inhibitory effects on the oil metabolisms to avoide oxidative damages to the imbibed seeds, and the seed shell played the role similiar to the exogenous GAs in the initial stage of germination in the natural conditions.
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Affiliation(s)
- Jikang Sun
- College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, Hunan, China
| | - Ping Wang
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan, China.
| | - Tao Zhou
- College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, Hunan, China
| | - Jian Rong
- College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, Hunan, China
| | - Hao Jia
- College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, Hunan, China
| | - Zhiming Liu
- Department of Biology, Eastern New Mexico University, Portales, NM88130, USA
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13
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Li Y, Wang D, Sun C, Hu X, Mu X, Hu J, Yang Y, Zhang Y, Xie CG, Zhou X. Molecular characterization of an AtPYL1-like protein, BrPYL1, as a putative ABA receptor in Brassica rapa. Biochem Biophys Res Commun 2017; 487:684-689. [PMID: 28450111 DOI: 10.1016/j.bbrc.2017.04.116] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 04/21/2017] [Indexed: 10/19/2022]
Abstract
Abscisic acid (ABA)-induced physiological changes are conserved in many land plants and underlie their responses to environmental stress and pathogens. The PYRABACTIN RESISTANCE1/PYR1-LIKE/REGULATORY COMPONENTS OF ABA RECEPTORS (PYLs)-type receptors perceive the ABA signal and initiate signal transduction. Here, we show that the genome of Brassica rapa encodes 24 putative AtPYL-like proteins. The AtPYL-like proteins in Brassica rapa (BrPYLs) can also be classified into 3 subclasses. We found that nearly all BrPYLs displayed high expression in at least one tissue. Overexpression of BrPYL1 conferred ABA hypersensitivity to Arabidopsis. Further, ABA activated the expression of an ABA-responsive reporter in Arabidopsis protoplasts expressing BrPYL1. Overall, these results suggest that BrPYL1 is a putative functional ABA receptor in Brassica rapa.
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Affiliation(s)
- Yanlin Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Science, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Dandan Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Science, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Congcong Sun
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Science, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Xiaochen Hu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Science, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Xiaoqian Mu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Science, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Jingjiang Hu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Science, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Yongqing Yang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100091, China
| | - Yanfeng Zhang
- Hybrid Rapeseed Research Centre of Shaanxi Province, Yangling 712100, Shaanxi, China
| | - Chang Gen Xie
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Science, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Xiaona Zhou
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Science, Northwest A&F University, Yangling 712100, Shaanxi, China.
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14
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Fan W, Zhao M, Li S, Bai X, Li J, Meng H, Mu Z. Contrasting transcriptional responses of PYR1/PYL/RCAR ABA receptors to ABA or dehydration stress between maize seedling leaves and roots. BMC PLANT BIOLOGY 2016; 16:99. [PMID: 27101806 PMCID: PMC4839062 DOI: 10.1186/s12870-016-0764-x] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Accepted: 03/21/2016] [Indexed: 05/21/2023]
Abstract
BACKGROUND The different actions of abscisic acid (ABA) in the aboveground and belowground parts of plants suggest the existence of a distinct perception mechanism between these organs. Although characterization of the soluble ABA receptors PYR1/PYL/RCAR as well as core signaling components has greatly advanced our understanding of ABA perception, signal transduction, and responses, the environment-dependent organ-specific sensitivity of plants to ABA is less well understood. RESULTS By performing real-time quantitative PCR assays, we comprehensively compared transcriptional differences of core ABA signaling components in response to ABA or osmotic/dehydration stress between maize (Zea mays L.) roots and leaves. Our results demonstrated up-regulation of the transcript levels of ZmPYLs homologous to dimeric-type Arabidopsis ABA receptors by ABA in maize primary roots, whereas those of ZmPYLs homologous to monomeric-type Arabidopsis ABA receptors were down-regulated. However, this trend was reversed in the leaves of plants treated with ABA via the root medium. Although the mRNA levels of ZmPYL1-3 increased significantly in roots subjected to polyethylene glycol (PEG)-induced osmotic stress, ZmPYL4-11 transcripts were either maintained at a stable level or increased only slightly. In detached leaves subjected to dehydration, the transcripts of ZmPYL1-3 together with ZmPYL5, ZmPYL6, ZmPYL10 and ZmPYL11 were decreased, whereas those of ZmPYL4, ZmPYL7 and ZmPYL8 were significantly increased. Our results also showed that all of the evaluated transcripts of PP2Cs and SnRK2 were quickly up-regulated in roots by ABA or osmotic stress; conversely they were either up-regulated or maintained at a constant level in leaves, depending on the isoforms within each family. CONCLUSIONS There is a distinct profile of PYR/PYL/RCAR ABA receptor gene expression between maize roots and leaves, suggesting that monomeric-type ABA receptors are mainly involved in the transmission of ABA signals in roots but that dimeric-type ABA receptors primarily carry out this function in leaves. Given that ZmPYL1 and ZmPYL4 exhibit similar transcript abundance under normal conditions, our findings may represent a novel mechanism for species-specific regulation of PYR/PYL/RCAR ABA receptor gene expression. A difference in the preference for core signaling components in the presence of exogenous ABA versus stress-induced endogenous ABA was observed in both leaves and roots. It appears that core ABA signaling components perform their osmotic/dehydration stress response functions in a stress intensity-, duration-, species-, organ-, and isoform-specific manner, leading to plasticity in response to adverse conditions and, thus, acclimation to life on land. These results deepen our understanding of the diverse biological effects of ABA between plant leaves and roots in response to abiotic stress at the stimulus-perception level.
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Affiliation(s)
- Wenqiang Fan
- College of Life Sciences, Northwest A&F University, Yangling, 712100 Shaanxi China
| | - Mengyao Zhao
- College of Life Sciences, Northwest A&F University, Yangling, 712100 Shaanxi China
| | - Suxin Li
- College of Life Sciences, Northwest A&F University, Yangling, 712100 Shaanxi China
| | - Xue Bai
- College of Life Sciences, Northwest A&F University, Yangling, 712100 Shaanxi China
| | - Jia Li
- College of Life Sciences, Northwest A&F University, Yangling, 712100 Shaanxi China
| | - Haowei Meng
- College of Life Sciences, Northwest A&F University, Yangling, 712100 Shaanxi China
| | - Zixin Mu
- College of Life Sciences, Northwest A&F University, Yangling, 712100 Shaanxi China
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15
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Quantitative iTRAQ-based proteomic analysis of phosphoproteins and ABA-regulated phosphoproteins in maize leaves under osmotic stress. Sci Rep 2015; 5:15626. [PMID: 26503333 PMCID: PMC4650667 DOI: 10.1038/srep15626] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Accepted: 09/29/2015] [Indexed: 11/18/2022] Open
Abstract
Abscisic acid (ABA) regulates various developmental processes and stress responses in plants.
Protein phosphorylation/dephosphorylation is a central post-translational modification (PTM) in ABA
signaling. However, the phosphoproteins regulated by ABA under osmotic stress remain unknown in
maize. In this study, maize mutant vp5 (deficient in ABA biosynthesis) and wild-type
Vp5 were used to identify leaf phosphoproteins regulated by ABA under osmotic stress. Up to
4052 phosphopeptides, corresponding to 3017 phosphoproteins, were identified by Multiplex run
iTRAQ-based quantitative proteomic and LC-MS/MS methods. The 4052 phosphopeptides contained 5723
non-redundant phosphosites; 512 phosphopeptides (379 in Vp5, 133 in vp5) displayed at
least a 1.5-fold change of phosphorylation level under osmotic stress, of which 40 shared common in
both genotypes and were differentially regulated by ABA. Comparing the signaling pathways involved
in vp5 response to osmotic stress and those that in Vp5, indicated that ABA played a
vital role in regulating these pathways related to mRNA synthesis, protein synthesis and
photosynthesis. Our results provide a comprehensive dataset of phosphopeptides and phosphorylation
sites regulated by ABA in maize adaptation to osmotic stress. This will be helpful to elucidate the
ABA-mediate mechanism of maize endurance to drought by triggering phosphorylation or
dephosphorylation cascades.
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16
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Singh A, Pandey A, Srivastava AK, Tran LSP, Pandey GK. Plant protein phosphatases 2C: from genomic diversity to functional multiplicity and importance in stress management. Crit Rev Biotechnol 2015; 36:1023-1035. [DOI: 10.3109/07388551.2015.1083941] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Amarjeet Singh
- Department of Plant Molecular Biology, University of Delhi South Campus, Benito Juarez Road, Dhaula Kuan, New Delhi, India,
| | - Amita Pandey
- Department of Plant Molecular Biology, University of Delhi South Campus, Benito Juarez Road, Dhaula Kuan, New Delhi, India,
| | - Ashish K. Srivastava
- Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Trombay, Mumbai, Maharashtra, India, and
| | - Lam-Son Phan Tran
- Signaling Pathway Research Unit, RIKEN Center for Sustainable Resource Science, Tsurumi, Yokohama, Kanagawa, Japan
| | - Girdhar K. Pandey
- Department of Plant Molecular Biology, University of Delhi South Campus, Benito Juarez Road, Dhaula Kuan, New Delhi, India,
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