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Kanojia A, Dijkwel PP. Abiotic Stress Responses are Governed by Reactive Oxygen Species and Age. ANNUAL PLANT REVIEWS ONLINE 2018:295-326. [PMID: 0 DOI: 10.1002/9781119312994.apr0611] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
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Jagodzik P, Tajdel-Zielinska M, Ciesla A, Marczak M, Ludwikow A. Mitogen-Activated Protein Kinase Cascades in Plant Hormone Signaling. FRONTIERS IN PLANT SCIENCE 2018; 9:1387. [PMID: 30349547 PMCID: PMC6187979 DOI: 10.3389/fpls.2018.01387] [Citation(s) in RCA: 168] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 08/31/2018] [Indexed: 05/02/2023]
Abstract
Mitogen-activated protein kinase (MAPK) modules play key roles in the transduction of environmental and developmental signals through phosphorylation of downstream signaling targets, including other kinases, enzymes, cytoskeletal proteins or transcription factors, in all eukaryotic cells. A typical MAPK cascade consists of at least three sequentially acting serine/threonine kinases, a MAP kinase kinase kinase (MAPKKK), a MAP kinase kinase (MAPKK) and finally, the MAP kinase (MAPK) itself, with each phosphorylating, and hence activating, the next kinase in the cascade. Recent advances in our understanding of hormone signaling pathways have led to the discovery of new regulatory systems. In particular, this research has revealed the emerging role of crosstalk between the protein components of various signaling pathways and the involvement of this crosstalk in multiple cellular processes. Here we provide an overview of current models and mechanisms of hormone signaling with a special emphasis on the role of MAPKs in cell signaling networks. One-sentence summary: In this review we highlight the mechanisms of crosstalk between MAPK cascades and plant hormone signaling pathways and summarize recent findings on MAPK regulation and function in various cellular processes.
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Affiliation(s)
- Przemysław Jagodzik
- Department of Plant Physiology, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, Poznań, Poland
| | - Małgorzata Tajdel-Zielinska
- Department of Biotechnology, Institute of Molecular Biology and Biotechnology, Faculty of Biology, Adam Mickiewicz University in Poznań, Poznań, Poland
| | - Agata Ciesla
- Department of Biotechnology, Institute of Molecular Biology and Biotechnology, Faculty of Biology, Adam Mickiewicz University in Poznań, Poznań, Poland
| | - Małgorzata Marczak
- Department of Biotechnology, Institute of Molecular Biology and Biotechnology, Faculty of Biology, Adam Mickiewicz University in Poznań, Poznań, Poland
| | - Agnieszka Ludwikow
- Department of Biotechnology, Institute of Molecular Biology and Biotechnology, Faculty of Biology, Adam Mickiewicz University in Poznań, Poznań, Poland
- *Correspondence: Agnieszka Ludwikow,
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Krysan PJ, Colcombet J. Cellular Complexity in MAPK Signaling in Plants: Questions and Emerging Tools to Answer Them. FRONTIERS IN PLANT SCIENCE 2018; 9:1674. [PMID: 30538711 PMCID: PMC6277691 DOI: 10.3389/fpls.2018.01674] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 10/26/2018] [Indexed: 05/21/2023]
Abstract
Mitogen activated protein kinase (MAPK) cascades play an important role in many aspects of plant growth, development, and environmental response. Because of their central role in many important processes, MAPKs have been extensively studied using biochemical and genetic approaches. This work has allowed for the identification of the MAPK genes and proteins involved in a number of different signaling pathways. Less well developed, however, is our understanding of how MAPK cascades and their corresponding signaling pathways are organized at subcellular levels. In this review, we will provide an overview of plant MAPK signaling, including a discussion of what is known about cellular mechanisms for achieving signaling specificity. Then we will explore what is currently known about the subcellular localization of MAPK proteins in resting conditions and after pathway activation. Finally, we will discuss a number of new experimental methods that have not been widely deployed in plants that have the potential to provide a deeper understanding of the spatial and temporal dynamics of MAPK signaling.
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Affiliation(s)
- Patrick J. Krysan
- Horticulture Department, University of Wisconsin–Madison, Madison, WI, United States
| | - Jean Colcombet
- Institute of Plant Sciences Paris Saclay (IPS2), CNRS, INRA, Université Paris-Sud, Université d’Evry, Université Paris-Saclay, Gif-sur-Yvette, France
- Institute of Plant Sciences Paris Saclay (IPS2), CNRS, INRA, Université Paris-Sud, Université d’Evry, Université Paris-Diderot, Sorbonne Paris-Cité, Gif-sur-Yvette, France
- *Correspondence: Jean Colcombet,
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Takahashi F, Kuromori T, Sato H, Shinozaki K. Regulatory Gene Networks in Drought Stress Responses and Resistance in Plants. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1081:189-214. [PMID: 30288711 DOI: 10.1007/978-981-13-1244-1_11] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Plant responses to drought stress have been analyzed extensively to reveal complex regulatory gene networks, including the detection of water deficit signals, as well as the physiological, cellular, and molecular responses. Plants recognize water deficit conditions at their roots and transmit this signal to their shoots to synthesize abscisic acid (ABA) in their leaves. ABA is a key phytohormone that regulates physiological and molecular responses to drought stress, such as stomatal closure, gene expression, and the accumulation of osmoprotectants and stress proteins. ABA transporters function as the first step for propagating synthesized ABA. To prevent water loss, ABA influx in guard cells is detected by several protein kinases, such as SnRK2s and MAPKs that regulate stomatal closure. ABA mediates a wide variety of gene expression machineries with stress-responsive transcription factors, including DREBs and AREBs, to acquire drought stress resistance in whole tissues. In this chapter, we summarize recent advances in drought stress signaling, focusing on gene networks in cellular and intercellular stress responses and drought resistance.
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Affiliation(s)
- Fuminori Takahashi
- Gene Discovery Research Group, RIKEN Center for Sustainable Resource Science, Tsukuba, Japan.
| | - Takashi Kuromori
- Gene Discovery Research Group, RIKEN Center for Sustainable Resource Science, Tsukuba, Japan
| | - Hikaru Sato
- Gene Discovery Research Group, RIKEN Center for Sustainable Resource Science, Tsukuba, Japan
| | - Kazuo Shinozaki
- Gene Discovery Research Group, RIKEN Center for Sustainable Resource Science, Tsukuba, Japan.
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55
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Protein phosphatase PP2C in the flagellum of Leishmania major: cloning and characterization. ACTA ACUST UNITED AC 2017. [DOI: 10.1017/pao.2017.14] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
AbstractThe main goal of this work consisted in cloning, purifying and characterizing a protein phosphatase 2C (PP2C) from promastigotes ofLeishmania major. The gene was cloned and amplified by PCR using specific oligonucleotides and the recombinant protein was purified by affinity chromatography. The peak with maximal protein concentration was analysed by sodium dodecyl sulphate-polyacrylamide gel electrophoresis and revealed a protein of 44·9 kDa with PP2C activity. This activity was dependent on divalent cations (Mg+2and Mn+2) and was optimal at pH of 8·5, using phosphothreonine as the substrate. Sanguinarine inhibited the activity of the recombinantLmPP2C, while protein tyrosine phosphatase inhibitors had no effect. The recombinantLmPP2C was used to generate polyclonal antibodies. These antibodies recognized a protein of 44·9 kDa in differentLeishmaniaspecies; theLmPP2C was localized in the flagellar pocket and the flagellum of promastigotes.
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56
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Zhang TY, Li FC, Fan CM, Li X, Zhang FF, He JM. Role and interrelationship of MEK1-MPK6 cascade, hydrogen peroxide and nitric oxide in darkness-induced stomatal closure. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2017; 262:190-199. [PMID: 28716416 DOI: 10.1016/j.plantsci.2017.06.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 05/13/2017] [Accepted: 06/23/2017] [Indexed: 05/20/2023]
Abstract
Pharmacological data have suggested the involvement of mitogen-activated protein kinase (MPK) cascades in dark-induced stomatal closure, but which specific MPK cascade participates in the darkness guard cell signaling and its relationship with hydrogen peroxide (H2O2) and nitric oxide (NO) remain unclear. In this paper, we observed that darkness induced activation of MPK6 in leaves of wild-type Arabidopsis (Arabidopsis thaliana) and mutants for nitrate reductase 1 (NIA1), but this effect was inhibited in mutants for MPK Kinase 1 (MEK1) and ATRBOHD/F. Mutants for MEK1, MPK6 and NIA1 showed defect of dark-induced NO production in guard cells and stomatal closure, but were normal in the dark-induced H2O2 generation, while stomata of mutant AtrbohD/F showed defect of dark-induced H2O2 and NO production and subsequent closure. Moreover, exogenous NO rescued the defect of dark-induced stomatal closure in mutants of AtrbohD/F, mek1 and mpk6, while exogenous H2O2 could not rescue the defect of dark-induced stomatal closure in mutants of mek1, mpk6 and nia1. These genetic and biochemical evidences not only show that MEK1-MPK6 cascade, AtRBOHD/F-dependent H2O2 and NIA1-dependent NO are all involved in dark-induced stomatal closure in Arabidopsis, also indicate that MEK1-MPK6 cascade functions via working downstream of H2O2 and upstream of NO.
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Affiliation(s)
- Teng-Yue Zhang
- School of Life Sciences, Shaanxi Normal University, Xi'an 710119, China
| | - Feng-Chen Li
- School of Life Sciences, Shaanxi Normal University, Xi'an 710119, China
| | - Cai-Ming Fan
- School of Life Sciences, Shaanxi Normal University, Xi'an 710119, China
| | - Xuan Li
- School of Life Sciences, Shaanxi Normal University, Xi'an 710119, China
| | - Fang-Fang Zhang
- School of Life Sciences, Shaanxi Normal University, Xi'an 710119, China
| | - Jun-Min He
- School of Life Sciences, Shaanxi Normal University, Xi'an 710119, China.
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Choi SW, Lee SB, Na YJ, Jeung SG, Kim SY. Arabidopsis MAP3K16 and Other Salt-Inducible MAP3Ks Regulate ABA Response Redundantly. Mol Cells 2017; 40:230-242. [PMID: 28292003 PMCID: PMC5386961 DOI: 10.14348/molcells.2017.0002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2016] [Accepted: 01/16/2017] [Indexed: 01/08/2023] Open
Abstract
In the Arabidopsis genome, approximately 80 MAP3Ks (mitogen-activated protein kinase kinase kinases) have been identified. However, only a few of them have been characterized, and the functions of most MAP3Ks are largely unknown. In this paper, we report the function of MAP3K16 and several other MAP3Ks, MAP3K14/15/17/18, whose expression is salt-inducible. We prepared MAP3K16 overexpression (OX) lines and analyzed their phenotypes. The result showed that the transgenic plants were ABA-insensitive during seed germination and cotyledon greening stage but their root growth was ABA-hypersensitive. The OX lines were more susceptible to water-deficit condition at later growth stage in soil. A MAP3K16 knockout (KO) line, on the other hand, exhibited opposite phenotypes. In similar transgenic analyses, we found that MAP3K14/15/17/18 OX and KO lines displayed similar phenotypes to those of MA3K16, suggesting the functional redundancy among them. MAP3K16 possesses in vitro kinase activity, and we carried out two-hybrid analyses to identify MAP3K16 substrates. Our results indicate that MAP3K16 interacts with MKK3 and the negative regulator of ABA response, ABR1, in yeast. Furthermore, MAP3K16 recombinant protein could phosphorylate MKK3 and ABR1, suggesting that they might be MAP3K16 substrates. Collectively, our results demonstrate that MAP3K16 and MAP3K14/15/17/18 are involved in ABA response, playing negative or positive roles depending on developmental stage and that MAP3K16 may function via MKK3 and ABR1.
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Affiliation(s)
- Seo-wha Choi
- Department of Biotechnology and Kumho Life Science Laboratory, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186,
Korea
| | - Seul-bee Lee
- Department of Biotechnology and Kumho Life Science Laboratory, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186,
Korea
| | - Yeon-ju Na
- Department of Biotechnology and Kumho Life Science Laboratory, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186,
Korea
| | - Sun-geum Jeung
- Department of Biotechnology and Kumho Life Science Laboratory, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186,
Korea
| | - Soo Young Kim
- Department of Biotechnology and Kumho Life Science Laboratory, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186,
Korea
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58
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Li K, Yang F, Zhang G, Song S, Li Y, Ren D, Miao Y, Song CP. AIK1, A Mitogen-Activated Protein Kinase, Modulates Abscisic Acid Responses through the MKK5-MPK6 Kinase Cascade. PLANT PHYSIOLOGY 2017; 173:1391-1408. [PMID: 27913741 PMCID: PMC5291029 DOI: 10.1104/pp.16.01386] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 11/29/2016] [Indexed: 05/03/2023]
Abstract
The mitogen-activated protein kinase (MAPK) cascade is an evolutionarily conserved signal transduction module involved in transducing extracellular signals to the nucleus for appropriate cellular adjustment. This cascade essentially consists of three components: a MAPK kinase kinase (MAPKKK), a MAPK kinase, and a MAPK, connected to each other by the event of phosphorylation. Here, we report the characterization of a MAPKKK, ABA-INSENSITIVE PROTEIN KINASE1 (AIK1), which regulates abscisic acid (ABA) responses in Arabidopsis (Arabidopsis thaliana). T-DNA insertion mutants of AIK1 showed insensitivity to ABA in terms of both root growth and stomatal response. AIK1 functions in ABA responses via regulation of root cell division and elongation, as well as stomatal responses. The activity of AIK1 is induced by ABA in Arabidopsis and tobacco (Nicotiana benthamiana), and the Arabidopsis protein phosphatase type 2C, ABI1, a negative regulator of ABA signaling, restricts AIK1 activity by dephosphorylation. Bimolecular fluorescence complementation analysis showed that MPK3, MPK6, and AIK1 interact with MKK5. The single mutant seedlings of mpk6 and mkk5 have similar phenotypes to aik1, but mkk4 does not. AIK1 was localized in the cytoplasm and shown to activate MKK5 by protein phosphorylation, which was an ABA-activated process. Constitutively active MKK5 in aik1 mutant seedlings complements the ABA-insensitive root growth phenotype of aik1 The activity of MPK6 was increased by ABA in wild-type seedlings, but its activation by ABA was impaired in aik1 and aik1 mkk5 mutants. These findings clearly suggest that the AIK1-MKK5-MPK6 cascade functions in the ABA regulation of primary root growth and stomatal response.
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Affiliation(s)
- Kun Li
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, Kaifeng 475001, China (K.L., F.Y., G.Z., S.S., Y.M., C.-P.S.); and
- State Key Laboratory of Plant Physiology and Biochemistry, China Agricultural University, Beijing 100193, China (Y.L., D.R.)
| | - Fengbo Yang
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, Kaifeng 475001, China (K.L., F.Y., G.Z., S.S., Y.M., C.-P.S.); and
- State Key Laboratory of Plant Physiology and Biochemistry, China Agricultural University, Beijing 100193, China (Y.L., D.R.)
| | - Guozeng Zhang
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, Kaifeng 475001, China (K.L., F.Y., G.Z., S.S., Y.M., C.-P.S.); and
- State Key Laboratory of Plant Physiology and Biochemistry, China Agricultural University, Beijing 100193, China (Y.L., D.R.)
| | - Shufei Song
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, Kaifeng 475001, China (K.L., F.Y., G.Z., S.S., Y.M., C.-P.S.); and
- State Key Laboratory of Plant Physiology and Biochemistry, China Agricultural University, Beijing 100193, China (Y.L., D.R.)
| | - Yuan Li
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, Kaifeng 475001, China (K.L., F.Y., G.Z., S.S., Y.M., C.-P.S.); and
- State Key Laboratory of Plant Physiology and Biochemistry, China Agricultural University, Beijing 100193, China (Y.L., D.R.)
| | - Dongtao Ren
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, Kaifeng 475001, China (K.L., F.Y., G.Z., S.S., Y.M., C.-P.S.); and
- State Key Laboratory of Plant Physiology and Biochemistry, China Agricultural University, Beijing 100193, China (Y.L., D.R.)
| | - Yuchen Miao
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, Kaifeng 475001, China (K.L., F.Y., G.Z., S.S., Y.M., C.-P.S.); and
- State Key Laboratory of Plant Physiology and Biochemistry, China Agricultural University, Beijing 100193, China (Y.L., D.R.)
| | - Chun-Peng Song
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, Kaifeng 475001, China (K.L., F.Y., G.Z., S.S., Y.M., C.-P.S.); and
- State Key Laboratory of Plant Physiology and Biochemistry, China Agricultural University, Beijing 100193, China (Y.L., D.R.)
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Li Y, Cai H, Liu P, Wang C, Gao H, Wu C, Yan K, Zhang S, Huang J, Zheng C. Arabidopsis MAPKKK18 positively regulates drought stress resistance via downstream MAPKK3. Biochem Biophys Res Commun 2017; 484:292-297. [PMID: 28131829 DOI: 10.1016/j.bbrc.2017.01.104] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 01/20/2017] [Indexed: 11/17/2022]
Abstract
Mitogen-activated protein kinase (MAPK) cascades are conserved and vital signaling components in the responses to various ambient stresses. Here, we report the identification of MAPKKK18, a drought resistance associated MAPK kinase kinase in Arabidopsis. The mapkkk18 knockout mutants displayed hypersensitivity to drought stress, whereas overaccumulation of MAPKKK18 in transgenic Arabidopsis plants significantly enhanced the resistance to drought. Expression pattern analysis revealed that the inducible expression of MAPKKK18 by osmotic stress was ABA and the canonical ABA signaling pathway dependent. Furthermore, MAPKKK18 mainly exerted its regulatory roles via downstream MAPKK3. These findings uncovered important roles for MAPKKK18 in drought resistance and expanded our understanding of the MAPK pathways in modulating abiotic stress responses.
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Affiliation(s)
- Yuanyuan Li
- College of Agronomy, Shandong Agricultural University, Tai'an City, Shandong Province, PR China
| | - Huixian Cai
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an City, Shandong Province, PR China
| | - Pu Liu
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an City, Shandong Province, PR China
| | - Chunyan Wang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an City, Shandong Province, PR China
| | - Huiyang Gao
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an City, Shandong Province, PR China
| | - Changai Wu
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an City, Shandong Province, PR China
| | - Kang Yan
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an City, Shandong Province, PR China
| | - Shizhong Zhang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an City, Shandong Province, PR China
| | - Jinguang Huang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an City, Shandong Province, PR China.
| | - Chengchao Zheng
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an City, Shandong Province, PR China.
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Cieśla A, Mituła F, Misztal L, Fedorowicz-Strońska O, Janicka S, Tajdel-Zielińska M, Marczak M, Janicki M, Ludwików A, Sadowski J. A Role for Barley Calcium-Dependent Protein Kinase CPK2a in the Response to Drought. FRONTIERS IN PLANT SCIENCE 2016; 7:1550. [PMID: 27826303 PMCID: PMC5078816 DOI: 10.3389/fpls.2016.01550] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 10/03/2016] [Indexed: 05/30/2023]
Abstract
Increasing the drought tolerance of crops is one of the most challenging goals in plant breeding. To improve crop productivity during periods of water deficit, it is essential to understand the complex regulatory pathways that adapt plant metabolism to environmental conditions. Among various plant hormones and second messengers, calcium ions are known to be involved in drought stress perception and signaling. Plants have developed specific calcium-dependent protein kinases that convert calcium signals into phosphorylation events. In this study we attempted to elucidate the role of a calcium-dependent protein kinase in the drought stress response of barley (Hordeum vulgare L.), one of the most economically important crops worldwide. The ongoing barley genome project has provided useful information about genes potentially involved in the drought stress response, but information on the role of calcium-dependent kinases is still limited. We found that the gene encoding the calcium-dependent protein kinase HvCPK2a was significantly upregulated in response to drought. To better understand the role of HvCPK2a in drought stress signaling, we generated transgenic Arabidopsis plants that overexpressed the corresponding coding sequence. Overexpressing lines displayed drought sensitivity, reduced nitrogen balance index (NBI), an increase in total chlorophyll content and decreased relative water content. In addition, in vitro kinase assay experiments combined with mass spectrometry allowed HvCPK2a autophosphorylation sites to be identified. Our results suggest that HvCPK2a is a dual-specificity calcium-dependent protein kinase that functions as a negative regulator of the drought stress response in barley.
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Affiliation(s)
- Agata Cieśla
- Biotechnology Department, Faculty of Biology, Adam Mickiewicz UniversityPoznań, Poland
| | - Filip Mituła
- Biotechnology Department, Faculty of Biology, Adam Mickiewicz UniversityPoznań, Poland
| | - Lucyna Misztal
- Biotechnology Department, Faculty of Biology, Adam Mickiewicz UniversityPoznań, Poland
| | | | - Sabina Janicka
- Biotechnology Department, Faculty of Biology, Adam Mickiewicz UniversityPoznań, Poland
| | | | - Małgorzata Marczak
- Biotechnology Department, Faculty of Biology, Adam Mickiewicz UniversityPoznań, Poland
| | - Maciej Janicki
- Biotechnology Department, Faculty of Biology, Adam Mickiewicz UniversityPoznań, Poland
| | - Agnieszka Ludwików
- Biotechnology Department, Faculty of Biology, Adam Mickiewicz UniversityPoznań, Poland
| | - Jan Sadowski
- Biotechnology Department, Faculty of Biology, Adam Mickiewicz UniversityPoznań, Poland
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61
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de Zelicourt A, Colcombet J, Hirt H. The Role of MAPK Modules and ABA during Abiotic Stress Signaling. TRENDS IN PLANT SCIENCE 2016; 21:677-685. [PMID: 27143288 DOI: 10.1016/j.tplants.2016.04.004] [Citation(s) in RCA: 229] [Impact Index Per Article: 28.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 03/21/2016] [Accepted: 04/04/2016] [Indexed: 05/18/2023]
Abstract
To respond to abiotic stresses, plants have developed specific mechanisms that allow them to rapidly perceive and respond to environmental changes. The phytohormone abscisic acid (ABA) was shown to be a pivotal regulator of abiotic stress responses in plants, triggering major changes in plant physiology. The ABA core signaling pathway largely relies on the activation of SnRK2 kinases to mediate several rapid responses, including gene regulation, stomatal closure, and plant growth modulation. Mitogen-activated protein kinases (MAPKs) have also been implicated in ABA signaling, but an entire ABA-activated MAPK module was uncovered only recently. In this review, we discuss the evidence for a role of MAPK modules in the context of different plant ABA signaling pathways.
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Affiliation(s)
- Axel de Zelicourt
- 4700 King Abdullah University of Sciences and Technology, KAUST, Thuwal 23955-6900, Saudi Arabia
| | - Jean Colcombet
- Institute of Plant Sciences Paris Saclay, INRA-CNRS-UEVE, Orsay 91405, France
| | - Heribert Hirt
- 4700 King Abdullah University of Sciences and Technology, KAUST, Thuwal 23955-6900, Saudi Arabia; Institute of Plant Sciences Paris Saclay, INRA-CNRS-UEVE, Orsay 91405, France.
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62
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Leishmania mexicana: promastigotes and amastigotes secrete protein phosphatases and this correlates with the production of inflammatory cytokines in macrophages. Parasitology 2016; 143:1409-20. [PMID: 27220404 DOI: 10.1017/s0031182016000949] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Phosphatase activity of Leishmania spp. has been shown to deregulate the signalling pathways of the host cell. We here show that Leishmania mexicana promastigotes and amastigotes secrete proteins with phosphatase activity to the culture medium, which was higher in the Promastigote Secretion Medium (PSM) as compared with the Amastigote Secretion Medium (ASM) and was not due to cell lysis, since parasite viability was not affected by the secretion process. The biochemical characterization showed that the phosphatase activity present in PSM was higher in dephosphorylating the peptide END (pY) INASL as compared with the peptide RRA (pT)VA. In contrast, the phosphatase activity in ASM showed little dephosphorylating capacity for both peptides. Inhibition assays demonstrated that the phosphatase activity of both PSM and ASM was sensible only to protein tyrosine phosphatases inhibitors. An antibody against a protein phosphatase 2C (PP2C) of Leishmania major cross-reacted with a 44·9 kDa molecule in different cellular fractions of L. mexicana promastigotes and amastigotes, however, in PSM and ASM, the antibody recognized a protein about 70 kDa. By electron microscopy, the PP2C was localized in the flagellar pocket of amastigotes. PSM and ASM induced the production of tumor necrosis factor alpha, IL-1β, IL-12p70 and IL-10 in human macrophages.
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63
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Lee Y, Kim YJ, Kim MH, Kwak JM. MAPK Cascades in Guard Cell Signal Transduction. FRONTIERS IN PLANT SCIENCE 2016; 7:80. [PMID: 26904052 PMCID: PMC4749715 DOI: 10.3389/fpls.2016.00080] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Accepted: 01/16/2016] [Indexed: 05/03/2023]
Abstract
Guard cells form stomata on the epidermis and continuously respond to endogenous and environmental stimuli to fine-tune the gas exchange and transpirational water loss, processes which involve mitogen-activated protein kinase (MAPK) cascades. MAPKs form three-tiered kinase cascades with MAPK kinases and MAPK kinase kinases, by which signals are transduced to the target proteins. MAPK cascade genes are highly conserved in all eukaryotes, and they play crucial roles in myriad developmental and physiological processes. MAPK cascades function during biotic and abiotic stress responses by linking extracellular signals received by receptors to cytosolic events and gene expression. In this review, we highlight recent findings and insights into MAPK-mediated guard cell signaling, including the specificity of MAPK cascades and the remaining questions.
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Affiliation(s)
- Yuree Lee
- Center for Plant Aging Research, Institute for Basic ScienceDaegu, South Korea
| | - Yun Ju Kim
- Center for Plant Aging Research, Institute for Basic ScienceDaegu, South Korea
| | - Myung-Hee Kim
- Center for Plant Aging Research, Institute for Basic ScienceDaegu, South Korea
| | - June M. Kwak
- Center for Plant Aging Research, Institute for Basic ScienceDaegu, South Korea
- Department of New Biology, Daegu Gyeongbuk Institute of Science and TechnologyDaegu, South Korea
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Tajdel M, Mituła F, Ludwików A. Regulation of Arabidopsis MAPKKK18 by ABI1 and SnRK2, components of the ABA signaling pathway. PLANT SIGNALING & BEHAVIOR 2016; 11:e1139277. [PMID: 26852793 PMCID: PMC4883884 DOI: 10.1080/15592324.2016.1139277] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
The plant hormone abscisic acid (ABA), a key regulator in many crucial developmental and physiological processes, recruits diverse components into precisely regulated signaling network. We recently discovered that MAPKKK18, an ABA-activated kinase, is regulated by the protein phosphatase type 2C (PP2C) ABI1 and the kinase SnRK2.6, both components of the ABA core signaling pathway. ABI1 acts to inhibit MAPKKK18 kinase activity, but also affects MAPKKK18 protein turnover via the ubiquitin-proteasome pathway. SnRK2.6 kinase also seems to be important for the regulation of MAPKKK18 function. In this review we summarize the mechanisms that are exclusively involved in MAPKKK18 kinase regulation and that ensure specificity in its activation.
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Affiliation(s)
- Małgorzata Tajdel
- a Department of Biotechnology , Institute of Molecular Biology and Biotechnology, Faculty of Biology, Adam Mickiewicz University in Poznan , Umultowska , Poznan , Poland
| | - Filip Mituła
- a Department of Biotechnology , Institute of Molecular Biology and Biotechnology, Faculty of Biology, Adam Mickiewicz University in Poznan , Umultowska , Poznan , Poland
| | - Agnieszka Ludwików
- a Department of Biotechnology , Institute of Molecular Biology and Biotechnology, Faculty of Biology, Adam Mickiewicz University in Poznan , Umultowska , Poznan , Poland
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Colcombet J, Sözen C, Hirt H. Convergence of Multiple MAP3Ks on MKK3 Identifies a Set of Novel Stress MAPK Modules. FRONTIERS IN PLANT SCIENCE 2016; 7:1941. [PMID: 28066492 PMCID: PMC5177658 DOI: 10.3389/fpls.2016.01941] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 12/07/2016] [Indexed: 05/04/2023]
Abstract
Since its first description in 1995 and functional characterization 12 years later, plant MKK3-type MAP2Ks have emerged as important integrators in plant signaling. Although they have received less attention than the canonical stress-activated mitogen-activated protein kinases (MAPKs), several recent publications shed light on their important roles in plant adaptation to environmental conditions. Nevertheless, the MKK3-related literature is complicated. This review summarizes the current knowledge and discrepancies on MKK3 MAPK modules in plants and highlights the singular role of MKK3 in green plants. In the light of the latest data, we hypothesize a general model that all clade-III MAP3Ks converge on MKK3 and C-group MAPKs, thereby defining a set of novel MAPK modules which are activated by stresses and internal signals through the transcriptional regulation of MAP3K genes.
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Affiliation(s)
- Jean Colcombet
- Institute of Plant Sciences Paris-Saclay, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique, Université Paris-Sud, Université d’Evry, Université Paris-Diderot, Sorbonne Paris-Cité, Université Paris-SaclayOrsay, France
- *Correspondence: Jean Colcombet,
| | - Cécile Sözen
- Institute of Plant Sciences Paris-Saclay, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique, Université Paris-Sud, Université d’Evry, Université Paris-Diderot, Sorbonne Paris-Cité, Université Paris-SaclayOrsay, France
| | - Heribert Hirt
- Center for Desert Agriculture, King Abdullah University of Science and TechnologyThuwal, Saudi Arabia
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