151
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Tõldsepp K, Zhang J, Takahashi Y, Sindarovska Y, Hõrak H, Ceciliato PHO, Koolmeister K, Wang YS, Vaahtera L, Jakobson L, Yeh CY, Park J, Brosche M, Kollist H, Schroeder JI. Mitogen-activated protein kinases MPK4 and MPK12 are key components mediating CO 2 -induced stomatal movements. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2018; 96:1018-1035. [PMID: 30203878 PMCID: PMC6261798 DOI: 10.1111/tpj.14087] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 08/30/2018] [Accepted: 09/03/2018] [Indexed: 05/19/2023]
Abstract
Respiration in leaves and the continued elevation in the atmospheric CO2 concentration cause CO2 -mediated reduction in stomatal pore apertures. Several mutants have been isolated for which stomatal responses to both abscisic acid (ABA) and CO2 are simultaneously defective. However, there are only few mutations that impair the stomatal response to elevated CO2 , but not to ABA. Such mutants are invaluable in unraveling the molecular mechanisms of early CO2 signal transduction in guard cells. Recently, mutations in the mitogen-activated protein (MAP) kinase, MPK12, have been shown to partially impair CO2 -induced stomatal closure. Here, we show that mpk12 plants, in which MPK4 is stably silenced specifically in guard cells (mpk12 mpk4GC homozygous double-mutants), completely lack CO2 -induced stomatal responses and have impaired activation of guard cell S-type anion channels in response to elevated CO2 /bicarbonate. However, ABA-induced stomatal closure, S-type anion channel activation and ABA-induced marker gene expression remain intact in the mpk12 mpk4GC double-mutants. These findings suggest that MPK12 and MPK4 act very early in CO2 signaling, upstream of, or parallel to the convergence of CO2 and ABA signal transduction. The activities of MPK4 and MPK12 protein kinases were not directly modulated by CO2 /bicarbonate in vitro, suggesting that they are not direct CO2 /bicarbonate sensors. Further data indicate that MPK4 and MPK12 have distinguishable roles in Arabidopsis and that the previously suggested role of RHC1 in stomatal CO2 signaling is minor, whereas MPK4 and MPK12 act as key components of early stomatal CO2 signal transduction.
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Affiliation(s)
- Kadri Tõldsepp
- Institute of Technology, University of Tartu, Tartu, 50411, Estonia
| | - Jingbo Zhang
- Division of Biological Sciences, Cell and Developmental Biology Section, University of California San Diego, La Jolla, CA, 92093-0116, USA
| | - Yohei Takahashi
- Division of Biological Sciences, Cell and Developmental Biology Section, University of California San Diego, La Jolla, CA, 92093-0116, USA
| | - Yana Sindarovska
- Institute of Technology, University of Tartu, Tartu, 50411, Estonia
| | - Hanna Hõrak
- Institute of Technology, University of Tartu, Tartu, 50411, Estonia
| | - Paulo H O Ceciliato
- Division of Biological Sciences, Cell and Developmental Biology Section, University of California San Diego, La Jolla, CA, 92093-0116, USA
| | | | - Yuh-Shuh Wang
- Institute of Technology, University of Tartu, Tartu, 50411, Estonia
| | - Lauri Vaahtera
- Organismal and Evolutionary Biology Research Programme, Viikki Plant Science Centre, Faculty of Biological and Environmental Sciences, University of Helsinki, P.O. Box 65 (Viikinkaari 1), Helsinki, FI-00014, Finland
| | - Liina Jakobson
- Institute of Technology, University of Tartu, Tartu, 50411, Estonia
| | - Chung-Yueh Yeh
- Institute of Technology, University of Tartu, Tartu, 50411, Estonia
| | - Jiyoung Park
- Division of Biological Sciences, Cell and Developmental Biology Section, University of California San Diego, La Jolla, CA, 92093-0116, USA
| | - Mikael Brosche
- Organismal and Evolutionary Biology Research Programme, Viikki Plant Science Centre, Faculty of Biological and Environmental Sciences, University of Helsinki, P.O. Box 65 (Viikinkaari 1), Helsinki, FI-00014, Finland
| | - Hannes Kollist
- Institute of Technology, University of Tartu, Tartu, 50411, Estonia
| | - Julian I Schroeder
- Division of Biological Sciences, Cell and Developmental Biology Section, University of California San Diego, La Jolla, CA, 92093-0116, USA
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152
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Yang J, Zhao S, Zhao B, Li C. Overexpression of TaLEA3 induces rapid stomatal closure under drought stress in Phellodendron amurense Rupr. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2018; 277:100-109. [PMID: 30466574 DOI: 10.1016/j.plantsci.2018.09.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 09/21/2018] [Accepted: 09/26/2018] [Indexed: 05/23/2023]
Abstract
Late embryogenesis abundant (LEA) proteins participate in drought stress responses in plants. In the present study, the gene TaLEA3 from the drought-resistant plant Tamarix androssowii was transformed into Amur cork tree (Phellodendron amurense) via Agrobacterium tumefaciens to investigate the mechanism of stomatal closure in response to osmotic stress. Our results showed that P. amurense overexpressing TaLEA3 were resistant to drought stress by rapid stomatal closure. To study the stomatal movement regulated at the molecular level, a model system for stoma closure was established in in vitro P. amurense. In this work, we found that the increased Ca2+ accumulation in guard cells of transgenic plants caused stomatal closure and activated K+ efflux under polyethylene glycol (PEG) stress. Moreover, H+ changes might provide a needed pH condition for stomatal closure. Further, nitric oxide (NO) fluorescence was measured using an NO-specific fluorescent probe, diaminofluorescein-FM diacetate, which showed that guard cell NO fluorescence was stronger in transgenic plants compared with wild type plants. Additionally, five genes encoding nitrate reductase were up-regulated, indicating that TaLEA3 overexpression positively regulated NO biosynthesis and accumulation in the guard cells. This discovery will further our understanding of the LEA gene function and will help in engineering drought-resistant tree cultivars.
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Affiliation(s)
- Jingli Yang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 26 Hexing Road, Harbin 150040, China
| | - Shicheng Zhao
- School of Phamacy, Harbin University of Commerce, Harbin 150076, China
| | - Bo Zhao
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 26 Hexing Road, Harbin 150040, China
| | - Chenghao Li
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 26 Hexing Road, Harbin 150040, China.
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153
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Ullah A, Manghwar H, Shaban M, Khan AH, Akbar A, Ali U, Ali E, Fahad S. Phytohormones enhanced drought tolerance in plants: a coping strategy. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:33103-33118. [PMID: 30284160 DOI: 10.1007/s11356-018-3364-5] [Citation(s) in RCA: 150] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 09/27/2018] [Indexed: 05/20/2023]
Abstract
Drought stress is a severe environmental constraint among the emerging problems. Plants are highly vulnerable to drought stress and a severe decrease in yield was recorded in the last few decades. So, it is highly desirable to understand the mechanism of drought tolerance in plants and consequently enhance the tolerance against drought stress. Phytohormones are known to play vital roles in regulating various phenomenons in plants to acclimatize to varying drought environment. Abscisic acid (ABA) is considered the main hormone which intensifies drought tolerance in plants through various morpho-physiological and molecular processes including stomata regulation, root development, and initiation of ABA-dependent pathway. In addition, jasmonic acid (JA), salicylic acid (SA) ethylene (ET), auxins (IAA), gibberellins (GAs), cytokinins (CKs), and brassinosteroids (BRs) are also very important phytohormones to congregate the challenges of drought stress. However, these hormones are usually cross talk with each other to increase the survival of plants in drought conditions. On the other hand, the transgenic approach is currently the most accepted technique to engineer the genes responsible for the synthesis of phytohormones in drought stress response. Our present review highlights the regulatory circuits of phytohormones in drought tolerance mechanism.
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Affiliation(s)
- Abid Ullah
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, Hubei, People's Republic of China.
- Department of Botany, University of Malakand, Chakdara Dir Lower, Khyber Pakhtunkhwa, 18550, Pakistan.
| | - Hakim Manghwar
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, Hubei, People's Republic of China
| | - Muhammad Shaban
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, Hubei, People's Republic of China
| | - Aamir Hamid Khan
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, Hubei, People's Republic of China
| | - Adnan Akbar
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, Hubei, People's Republic of China
| | - Usman Ali
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, Hubei, People's Republic of China
| | - Ehsan Ali
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Shah Fahad
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, Hubei, People's Republic of China
- Department of Agriculture, University of Swabi, Swabi, KPK, Pakistan
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154
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Zhang J, Wang N, Miao Y, Hauser F, McCammon JA, Rappel WJ, Schroeder JI. Identification of SLAC1 anion channel residues required for CO 2/bicarbonate sensing and regulation of stomatal movements. Proc Natl Acad Sci U S A 2018; 115:11129-11137. [PMID: 30301791 PMCID: PMC6217375 DOI: 10.1073/pnas.1807624115] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Increases in CO2 concentration in plant leaves due to respiration in the dark and the continuing atmospheric [CO2] rise cause closing of stomatal pores, thus affecting plant-water relations globally. However, the underlying CO2/bicarbonate (CO2/HCO3-) sensing mechanisms remain unknown. [CO2] elevation in leaves triggers stomatal closure by anion efflux mediated via the SLAC1 anion channel localized in the plasma membrane of guard cells. Previous reconstitution analysis has suggested that intracellular bicarbonate ions might directly up-regulate SLAC1 channel activity. However, whether such a CO2/HCO3- regulation of SLAC1 is relevant for CO2 control of stomatal movements in planta remains unknown. Here, we computationally probe for candidate bicarbonate-interacting sites within the SLAC1 anion channel via long-timescale Gaussian accelerated molecular dynamics (GaMD) simulations. Mutations of two putative bicarbonate-interacting residues, R256 and R321, impaired the enhancement of the SLAC1 anion channel activity by CO2/HCO3- in Xenopus oocytes. Mutations of the neighboring charged amino acid K255 and residue R432 and the predicted gate residue F450 did not affect HCO3- regulation of SLAC1. Notably, gas-exchange experiments with slac1-transformed plants expressing mutated SLAC1 proteins revealed that the SLAC1 residue R256 is required for CO2 regulation of stomatal movements in planta, but not for abscisic acid (ABA)-induced stomatal closing. Patch clamp analyses of guard cells show that activation of S-type anion channels by CO2/HCO3-, but not by ABA, was impaired, indicating the relevance of R256 for CO2 signal transduction. Together, these analyses suggest that the SLAC1 anion channel is one of the physiologically relevant CO2/HCO3- sensors in guard cells.
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Affiliation(s)
- Jingbo Zhang
- Cell and Developmental Biology Section, Division of Biological Sciences, University of California, San Diego, La Jolla, CA 92093-0116
| | - Nuo Wang
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093
| | - Yinglong Miao
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093;
- Center for Computational Biology, University of Kansas, Lawrence, KS 66047
- Department of Molecular Biosciences, University of Kansas, Lawrence, KS 66045
| | - Felix Hauser
- Cell and Developmental Biology Section, Division of Biological Sciences, University of California, San Diego, La Jolla, CA 92093-0116
| | - J Andrew McCammon
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093
| | - Wouter-Jan Rappel
- Department of Physics, University of California, San Diego, La Jolla, CA 92093-0354
| | - Julian I Schroeder
- Cell and Developmental Biology Section, Division of Biological Sciences, University of California, San Diego, La Jolla, CA 92093-0116;
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155
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Profile of Julian I. Schroeder. Proc Natl Acad Sci U S A 2018; 115:11109-11111. [PMID: 30322905 DOI: 10.1073/pnas.1815757115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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156
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Dong H, Bai L, Zhang Y, Zhang G, Mao Y, Min L, Xiang F, Qian D, Zhu X, Song CP. Modulation of Guard Cell Turgor and Drought Tolerance by a Peroxisomal Acetate-Malate Shunt. MOLECULAR PLANT 2018; 11:1278-1291. [PMID: 30130577 DOI: 10.1016/j.molp.2018.07.008] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 07/13/2018] [Accepted: 07/31/2018] [Indexed: 06/08/2023]
Abstract
In plants, stomatal movements are tightly controlled by changes in cellular turgor pressure. Carbohydrates produced by glycolysis and the tricarboxylic acid cycle play an important role in regulating turgor pressure. Here, we describe an Arabidopsis mutant, bzu1, isolated in a screen for elevated leaf temperature in response to drought stress, which displays smaller stomatal pores and higher drought resistance than wild-type plants. BZU1 encodes a known acetyl-coenzyme A synthetase, ACN1, which acts in the first step of a metabolic pathway converting acetate to malate in peroxisomes. We showed that BZU1/ACN1-mediated acetate-to-malate conversion provides a shunt that plays an important role in osmoregulation of stomatal turgor. We found that the smaller stomatal pores in the bzu1 mutant are a consequence of reduced accumulation of malate, which acts as an osmoticum and/or a signaling molecule in the control of turgor pressure within guard cells, and these results provided new genetic evidence for malate-regulated stomatal movement. Collectively, our results indicate that a peroxisomal BZU1/ACN1-mediated acetate-malate shunt regulates drought resistance by controlling the turgor pressure of guard cells in Arabidopsis.
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Affiliation(s)
- Huan Dong
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, 85 Minglun Street, Kaifeng 475001, China
| | - Ling Bai
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, 85 Minglun Street, Kaifeng 475001, China
| | - Yu Zhang
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, 85 Minglun Street, Kaifeng 475001, China
| | - Guozeng Zhang
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, 85 Minglun Street, Kaifeng 475001, China
| | - Yanqing Mao
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, 85 Minglun Street, Kaifeng 475001, China
| | - Lulu Min
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, 85 Minglun Street, Kaifeng 475001, China
| | - Fuyou Xiang
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, 85 Minglun Street, Kaifeng 475001, China
| | - Dongdong Qian
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, 85 Minglun Street, Kaifeng 475001, China
| | - Xiaohong Zhu
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, 85 Minglun Street, Kaifeng 475001, China
| | - Chun-Peng Song
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, 85 Minglun Street, Kaifeng 475001, China.
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157
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Abscisic acid-independent stomatal CO 2 signal transduction pathway and convergence of CO 2 and ABA signaling downstream of OST1 kinase. Proc Natl Acad Sci U S A 2018; 115:E9971-E9980. [PMID: 30282744 DOI: 10.1073/pnas.1809204115] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Stomatal pore apertures are narrowing globally due to the continuing rise in atmospheric [CO2]. CO2 elevation and the plant hormone abscisic acid (ABA) both induce rapid stomatal closure. However, the underlying signal transduction mechanisms for CO2/ABA interaction remain unclear. Two models have been considered: (i) CO2 elevation enhances ABA concentrations and/or early ABA signaling in guard cells to induce stomatal closure and (ii) CO2 signaling merges with ABA at OST1/SnRK2.6 protein kinase activation. Here we use genetics, ABA-reporter imaging, stomatal conductance, patch clamp, and biochemical analyses to investigate these models. The strong ABA biosynthesis mutants nced3/nced5 and aba2-1 remain responsive to CO2 elevation. Rapid CO2-triggered stomatal closure in PYR/RCAR ABA receptor quadruple and hextuple mutants is not disrupted but delayed. Time-resolved ABA concentration monitoring in guard cells using a FRET-based ABA-reporter, ABAleon2.15, and ABA reporter gene assays suggest that CO2 elevation does not trigger [ABA] increases in guard cells, in contrast to control ABA exposures. Moreover, CO2 activates guard cell S-type anion channels in nced3/nced5 and ABA receptor hextuple mutants. Unexpectedly, in-gel protein kinase assays show that unlike ABA, elevated CO2 does not activate OST1/SnRK2 kinases in guard cells. The present study points to a model in which rapid CO2 signal transduction leading to stomatal closure occurs via an ABA-independent pathway downstream of OST1/SnRK2.6. Basal ABA signaling and OST1/SnRK2 activity are required to facilitate the stomatal response to elevated CO2 These findings provide insights into the interaction between CO2/ABA signal transduction in light of the continuing rise in atmospheric [CO2].
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158
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Wang C, Zhang J, Wu J, Brodsky D, Schroeder JI. Cytosolic malate and oxaloacetate activate S-type anion channels in Arabidopsis guard cells. THE NEW PHYTOLOGIST 2018; 220:178-186. [PMID: 29971803 PMCID: PMC6115288 DOI: 10.1111/nph.15292] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 05/21/2018] [Indexed: 05/10/2023]
Abstract
Intracellular malate-starch interconversion plays an important role in stomatal movements. We investigated whether malate or oxaloacetate from the cytosolic membrane side regulate anion channels in the plasma membrane of Arabidopsis thaliana guard cells. Physiological concentrations of cytosolic malate have been reported in the range of 0.4-3 mM in leaf cells. Guard cell patch clamp and two-electrode oocyte voltage-clamp experiments were pursued. We show that a concentration of 1 mM cytosolic malate greatly activates S-type anion channels in Arabidopsis thaliana guard cells. Interestingly, 1 mM cytosolic oxaloacetate also activates S-type anion channels. Malate activation was abrogated at 10 mM malate and in SLAC1 anion channel mutant alleles. Interestingly, malate activation of S-type anion currents was disrupted at below resting cytosolic-free calcium concentrations ([Ca2+ ]cyt ), suggesting a key role for basal [Ca2+ ]cyt signaling. Cytosolic malate was not able to directly activate or enhance SLAC1-mediated anion currents in Xenopus oocytes, whereas in positive controls, cytosolic NaHCO3 enhanced SLAC1 activity, suggesting that malate may not directly modulate SLAC1. Cytosolic malate activation of S-type anion currents was impaired in ost1 and in cpk5/6/11/23 quadruple mutant guard cells. Together these findings show that these cytosolic organic anions function in guard cell 'plasma membrane' ion channel regulation.
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Affiliation(s)
- Cun Wang
- Cell and Developmental Biology Section, Division of Biological Sciences, University of California at San Diego, La Jolla, CA 92093-0116, USA
- College of Life Sciences & State Key Laboratory of Crop Stress Biology in Arid Areas Northwest A&F University, Yangling, Shaanxi, China
| | - Jingbo Zhang
- Cell and Developmental Biology Section, Division of Biological Sciences, University of California at San Diego, La Jolla, CA 92093-0116, USA
| | - Juyou Wu
- Cell and Developmental Biology Section, Division of Biological Sciences, University of California at San Diego, La Jolla, CA 92093-0116, USA
| | - Dennis Brodsky
- Cell and Developmental Biology Section, Division of Biological Sciences, University of California at San Diego, La Jolla, CA 92093-0116, USA
| | - Julian I. Schroeder
- Cell and Developmental Biology Section, Division of Biological Sciences, University of California at San Diego, La Jolla, CA 92093-0116, USA
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159
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Duan X, Yu Y, Duanmu H, Chen C, Sun X, Cao L, Li Q, Ding X, Liu B, Zhu Y. GsSLAH3, a Glycine soja slow type anion channel homolog, positively modulates plant bicarbonate stress tolerance. PHYSIOLOGIA PLANTARUM 2018; 164:145-162. [PMID: 29243826 DOI: 10.1111/ppl.12683] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 12/05/2017] [Accepted: 12/11/2017] [Indexed: 06/07/2023]
Abstract
Alkaline stress is a major form of abiotic stress that severely inhibits plant growth and development, thus restricting crop productivity. However, little is known about how plants respond to alkali. In this study, a slow-type anion channel homolog 3 gene, GsSLAH3, was isolated and functionally characterized. Bioinformatics analysis showed that the GsSLAH3 protein contains 10 transmembrane helices. Consistently, GsSLAH3 was found to locate on plasma membrane by transient expression in onion epidermal cells. In wild soybeans, GsSLAH3 expression was induced by NaHCO3 treatment, suggesting its involvement in plant response to alkaline stress. Ectopic expression of GsSLAH3 in yeast increased sensitivity to alkali treatment. Dramatically, overexpression of GsSLAH3 in Arabidopsis thaliana enhanced alkaline tolerance during the germination, seedling and adult stages. More interestingly, we found that transgenic lines also improved plant tolerance to KHCO3 rather than high pH treatment. A nitrate content analysis of Arabidopsis shoots showed that GsSLAH3 overexpressing lines accumulated more NO3- than wild-type. In summary, our data suggest that GsSLAH3 is a positive alkali responsive gene that increases bicarbonate resistance specifically.
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Affiliation(s)
- Xiangbo Duan
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin 150030, China
| | - Yang Yu
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin 150030, China
| | - Huizi Duanmu
- College of Life Science, Heilongjiang University, Harbin 150030, China
| | - Chao Chen
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin 150030, China
| | - Xiaoli Sun
- Agricultural College, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Lei Cao
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin 150030, China
| | - Qiang Li
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin 150030, China
| | - Xiaodong Ding
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin 150030, China
| | - Beidong Liu
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg S-413 90, Sweden
| | - Yanming Zhu
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin 150030, China
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160
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Lau KH, del Rosario Herrera M, Crisovan E, Wu S, Fei Z, Khan MA, Buell CR, Gemenet DC. Transcriptomic analysis of sweet potato under dehydration stress identifies candidate genes for drought tolerance. PLANT DIRECT 2018; 2:e00092. [PMID: 31245692 PMCID: PMC6508841 DOI: 10.1002/pld3.92] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 09/07/2018] [Accepted: 10/11/2018] [Indexed: 05/25/2023]
Abstract
Sweet potato (Ipomoea batatas [L.] Lam.) is an important subsistence crop in Sub-Saharan Africa, yet as for many crops, yield can be severely impacted by drought stress. Understanding the genetic mechanisms that control drought tolerance can facilitate the development of drought-tolerant sweet potato cultivars. Here, we report an expression profiling study using the US-bred cultivar, Beauregard, and a Ugandan landrace, Tanzania, treated with polyethylene glycol (PEG) to simulate drought and sampled at 24 and 48 hr after stress. At each time-point, between 4,000 to 6,000 genes in leaf tissue were differentially expressed in each cultivar. Approximately half of these differentially expressed genes were common between the two cultivars and were enriched for Gene Ontology terms associated with drought response. Three hundred orthologs of drought tolerance genes reported in model species were identified in the Ipomoea trifida reference genome, of which 122 were differentially expressed under at least one experimental condition, constituting a list of drought tolerance candidate genes. A subset of genes was differentially regulated between Beauregard and Tanzania, representing genotype-specific responses to drought stress. The data analyzed and reported here provide a resource for geneticists and breeders toward identifying and utilizing drought tolerance genes in sweet potato.
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Affiliation(s)
- Kin H. Lau
- Department of Plant BiologyMichigan State UniversityEast LansingMichigan
| | | | - Emily Crisovan
- Department of Plant BiologyMichigan State UniversityEast LansingMichigan
| | - Shan Wu
- Boyce Thompson InstituteCornell UniversityIthacaNew York
| | - Zhangjun Fei
- Boyce Thompson InstituteCornell UniversityIthacaNew York
| | - Muhammad Awais Khan
- International Potato CenterLimaPeru
- Present address:
Plant Pathology and Plant‐Microbe Biology SectionCornell UniversityGenevaNew York
| | - Carol Robin Buell
- Department of Plant BiologyMichigan State UniversityEast LansingMichigan
- Plant Resilience InstituteMichigan State UniversityEast LansingMichigan
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161
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Inomata T, Baslam M, Masui T, Koshu T, Takamatsu T, Kaneko K, Pozueta-Romero J, Mitsui T. Proteomics Analysis Reveals Non-Controlled Activation of Photosynthesis and Protein Synthesis in a Rice npp1 Mutant under High Temperature and Elevated CO₂ Conditions. Int J Mol Sci 2018; 19:ijms19092655. [PMID: 30205448 PMCID: PMC6165220 DOI: 10.3390/ijms19092655] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 08/30/2018] [Accepted: 09/03/2018] [Indexed: 11/26/2022] Open
Abstract
Rice nucleotide pyrophosphatase/phosphodiesterase 1 (NPP1) catalyzes the hydrolytic breakdown of the pyrophosphate and phosphodiester bonds of a number of nucleotides including ADP-glucose and ATP. Under high temperature and elevated CO2 conditions (HT + ECO2), the npp1 knockout rice mutant displayed rapid growth and high starch content phenotypes, indicating that NPP1 exerts a negative effect on starch accumulation and growth. To gain further insight into the mechanisms involved in the NPP1 downregulation induced starch overaccumulation, in this study we conducted photosynthesis, leaf proteomic, and chloroplast phosphoproteomic analyses of wild-type (WT) and npp1 plants cultured under HT + ECO2. Photosynthesis in npp1 leaves was significantly higher than in WT. Additionally, npp1 leaves accumulated higher levels of sucrose than WT. The proteomic analyses revealed upregulation of proteins related to carbohydrate metabolism and the protein synthesis system in npp1 plants. Further, our data indicate the induction of 14-3-3 proteins in npp1 plants. Our finding demonstrates a higher level of protein phosphorylation in npp1 chloroplasts, which may play an important role in carbohydrate accumulation. Together, these results offer novel targets and provide additional insights into carbohydrate metabolism regulation under ambient and adverse conditions.
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Affiliation(s)
- Takuya Inomata
- Graduate School of Science and Technology, Niigata University, 2-8050 Ikarashi, Niigata 950-2181, Japan.
| | - Marouane Baslam
- Department of Biochemistry, Niigata University, Niigata 950-218, Japan.
| | - Takahiro Masui
- Graduate School of Science and Technology, Niigata University, 2-8050 Ikarashi, Niigata 950-2181, Japan.
| | - Tsutomu Koshu
- Graduate School of Science and Technology, Niigata University, 2-8050 Ikarashi, Niigata 950-2181, Japan.
| | - Takeshi Takamatsu
- Graduate School of Science and Technology, Niigata University, 2-8050 Ikarashi, Niigata 950-2181, Japan.
- Department of Biochemistry, Niigata University, Niigata 950-218, Japan.
| | - Kentaro Kaneko
- Graduate School of Science and Technology, Niigata University, 2-8050 Ikarashi, Niigata 950-2181, Japan.
| | - Javier Pozueta-Romero
- Instituto de Agrobiotecnología (CSIC, UPNA, Gobierno de Navarra), Mutiloako Etorbidea Zenbaki Gabe, 31192 Mutiloabeti, Nafarroa, Spain.
| | - Toshiaki Mitsui
- Graduate School of Science and Technology, Niigata University, 2-8050 Ikarashi, Niigata 950-2181, Japan.
- Department of Biochemistry, Niigata University, Niigata 950-218, Japan.
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162
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Negi J, Munemasa S, Song B, Tadakuma R, Fujita M, Azoulay-Shemer T, Engineer CB, Kusumi K, Nishida I, Schroeder JI, Iba K. Eukaryotic lipid metabolic pathway is essential for functional chloroplasts and CO 2 and light responses in Arabidopsis guard cells. Proc Natl Acad Sci U S A 2018; 115:9038-9043. [PMID: 30127035 PMCID: PMC6130404 DOI: 10.1073/pnas.1810458115] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Stomatal guard cells develop unique chloroplasts in land plant species. However, the developmental mechanisms and function of chloroplasts in guard cells remain unclear. In seed plants, chloroplast membrane lipids are synthesized via two pathways: the prokaryotic and eukaryotic pathways. Here we report the central contribution of endoplasmic reticulum (ER)-derived chloroplast lipids, which are synthesized through the eukaryotic lipid metabolic pathway, in the development of functional guard cell chloroplasts. We gained insight into this pathway by isolating and examining an Arabidopsis mutant, gles1 (green less stomata 1), which had achlorophyllous stomatal guard cells and impaired stomatal responses to CO2 and light. The GLES1 gene encodes a small glycine-rich protein, which is a putative regulatory component of the trigalactosyldiacylglycerol (TGD) protein complex that mediates ER-to-chloroplast lipid transport via the eukaryotic pathway. Lipidomic analysis revealed that in the wild type, the prokaryotic pathway is dysfunctional, specifically in guard cells, whereas in gles1 guard cells, the eukaryotic pathway is also abrogated. CO2-induced stomatal closing and activation of guard cell S-type anion channels that drive stomatal closure were disrupted in gles1 guard cells. In conclusion, the eukaryotic lipid pathway plays an essential role in the development of a sensing/signaling machinery for CO2 and light in guard cell chloroplasts.
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Affiliation(s)
- Juntaro Negi
- Department of Biology, Faculty of Science, Kyushu University, 819-0395 Fukuoka, Japan;
| | - Shintaro Munemasa
- Cell and Developmental Biology Section, Division of Biological Sciences, University of California, San Diego, La Jolla, CA 92093
| | - Boseok Song
- Department of Biology, Faculty of Science, Kyushu University, 819-0395 Fukuoka, Japan
| | - Ryosuke Tadakuma
- Department of Biology, Faculty of Science, Kyushu University, 819-0395 Fukuoka, Japan
| | - Mayumi Fujita
- Department of Biology, Faculty of Science, Kyushu University, 819-0395 Fukuoka, Japan
| | - Tamar Azoulay-Shemer
- Cell and Developmental Biology Section, Division of Biological Sciences, University of California, San Diego, La Jolla, CA 92093
| | - Cawas B Engineer
- Cell and Developmental Biology Section, Division of Biological Sciences, University of California, San Diego, La Jolla, CA 92093
| | - Kensuke Kusumi
- Department of Biology, Faculty of Science, Kyushu University, 819-0395 Fukuoka, Japan
| | - Ikuo Nishida
- Graduate School of Science and Engineering, Saitama University, 338-8570 Saitama, Japan
| | - Julian I Schroeder
- Cell and Developmental Biology Section, Division of Biological Sciences, University of California, San Diego, La Jolla, CA 92093
| | - Koh Iba
- Department of Biology, Faculty of Science, Kyushu University, 819-0395 Fukuoka, Japan;
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163
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Qi J, Song CP, Wang B, Zhou J, Kangasjärvi J, Zhu JK, Gong Z. Reactive oxygen species signaling and stomatal movement in plant responses to drought stress and pathogen attack. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2018; 60:805-826. [PMID: 29660240 DOI: 10.1111/jipb.12654] [Citation(s) in RCA: 320] [Impact Index Per Article: 53.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 04/08/2018] [Indexed: 05/18/2023]
Abstract
Stomata, the pores formed by a pair of guard cells, are the main gateways for water transpiration and photosynthetic CO2 exchange, as well as pathogen invasion in land plants. Guard cell movement is regulated by a combination of environmental factors, including water status, light, CO2 levels and pathogen attack, as well as endogenous signals, such as abscisic acid and apoplastic reactive oxygen species (ROS). Under abiotic and biotic stress conditions, extracellular ROS are mainly produced by plasma membrane-localized NADPH oxidases, whereas intracellular ROS are produced in multiple organelles. These ROS form a sophisticated cellular signaling network, with the accumulation of apoplastic ROS an early hallmark of stomatal movement. Here, we review recent progress in understanding the molecular mechanisms of the ROS signaling network, primarily during drought stress and pathogen attack. We summarize the roles of apoplastic ROS in regulating stomatal movement, ABA and CO2 signaling, and immunity responses. Finally, we discuss ROS accumulation and communication between organelles and cells. This information provides a conceptual framework for understanding how ROS signaling is integrated with various signaling pathways during plant responses to abiotic and biotic stress stimuli.
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Affiliation(s)
- Junsheng Qi
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Chun-Peng Song
- Collaborative Innovation Center of Crop Stress Biology, Henan Province, Institute of Plant Stress Biology, Henan University, Kaifeng 475001, China
| | - Baoshan Wang
- Key Lab of Plant Stress Research, College of Life Science, Shandong Normal University, Ji'nan 250000, China
| | - Jianmin Zhou
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Jaakko Kangasjärvi
- Division of Plant Biology, Viikki Plant Science Centre, Department of Biosciences, University of Helsinki, 00014 Helsinki, Finland
| | - Jian-Kang Zhu
- Shanghai Center for Plant Stress Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China
- Department of Horticulture and Landscape Architecture, Purdue University, West Lafayette, IN 47907, USA
| | - Zhizhong Gong
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
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164
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Sakr S, Wang M, Dédaldéchamp F, Perez-Garcia MD, Ogé L, Hamama L, Atanassova R. The Sugar-Signaling Hub: Overview of Regulators and Interaction with the Hormonal and Metabolic Network. Int J Mol Sci 2018; 57:2367-2379. [PMID: 30149541 DOI: 10.1093/pcp/pcw157] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 08/07/2018] [Accepted: 09/05/2016] [Indexed: 05/25/2023] Open
Abstract
Plant growth and development has to be continuously adjusted to the available resources. Their optimization requires the integration of signals conveying the plant metabolic status, its hormonal balance, and its developmental stage. Many investigations have recently been conducted to provide insights into sugar signaling and its interplay with hormones and nitrogen in the fine-tuning of plant growth, development, and survival. The present review emphasizes the diversity of sugar signaling integrators, the main molecular and biochemical mechanisms related to the sugar-signaling dependent regulations, and to the regulatory hubs acting in the interplay of the sugar-hormone and sugar-nitrogen networks. It also contributes to compiling evidence likely to fill a few knowledge gaps, and raises new questions for the future.
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Affiliation(s)
- Soulaiman Sakr
- Institut de Recherche en Horticulture et Semences, Agrocampus-Ouest, INRA, Université d'Angers, SFR 4207 QUASAV, F-49045 Angers, France.
| | - Ming Wang
- Institut de Recherche en Horticulture et Semences, Agrocampus-Ouest, INRA, Université d'Angers, SFR 4207 QUASAV, F-49045 Angers, France.
| | - Fabienne Dédaldéchamp
- Equipe "Sucres & Echanges Végétaux-Environnement", Ecologie et Biologie des Interactions, Université de Poitiers, UMR CNRS 7267 EBI, Bâtiment B31, 3 rue Jacques Fort, TSA 51106, 86073 Poitiers CEDEX 9, France.
| | - Maria-Dolores Perez-Garcia
- Institut de Recherche en Horticulture et Semences, Agrocampus-Ouest, INRA, Université d'Angers, SFR 4207 QUASAV, F-49045 Angers, France.
| | - Laurent Ogé
- Institut de Recherche en Horticulture et Semences, Agrocampus-Ouest, INRA, Université d'Angers, SFR 4207 QUASAV, F-49045 Angers, France.
| | - Latifa Hamama
- Institut de Recherche en Horticulture et Semences, Agrocampus-Ouest, INRA, Université d'Angers, SFR 4207 QUASAV, F-49045 Angers, France.
| | - Rossitza Atanassova
- Equipe "Sucres & Echanges Végétaux-Environnement", Ecologie et Biologie des Interactions, Université de Poitiers, UMR CNRS 7267 EBI, Bâtiment B31, 3 rue Jacques Fort, TSA 51106, 86073 Poitiers CEDEX 9, France.
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165
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Kurusu T, Mitsuka D, Yagi C, Kitahata N, Tsutsui T, Ueda T, Yamamoto Y, Negi J, Iba K, Betsuyaku S, Kuchitsu K. Involvement of S-type anion channels in disease resistance against an oomycete pathogen in Arabidopsis seedlings. Commun Integr Biol 2018; 11:1-6. [PMID: 30214673 PMCID: PMC6132426 DOI: 10.1080/19420889.2018.1495007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 07/01/2018] [Accepted: 06/23/2018] [Indexed: 11/29/2022] Open
Abstract
Pharmacological indications suggest that anion channel-mediated plasma membrane (PM) anion efflux is crucial in early defense signaling to induce immune responses and programmed cell death in plants. Arabidopsis SLAC1, an S-type anion channel required for stomatal closure, is involved in cryptogein-induced PM Cl- efflux to positively modulate the activation of other ion fluxes, production of reactive oxygen species and a wide range of defense responses including hypersensitive cell death in tobacco BY-2 cells. We here analyzed disease resistance against several pathogens in multiple mutants of the SLAC/SLAH channels of Arabidopsis. Resistance against a biotrophic oomycete Hyaloperonospora arabidopsidis Noco2 was significantly enhanced in the SLAC1-overexpressing plants than in the wild-type, while that against a bacteria Pseudomonas syringae was not affected significantly. Possible regulatory roles of S-type anion channels in plant immunity and disease resistance against bacterial and oomycete pathogens is discussed.
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Affiliation(s)
- Takamitsu Kurusu
- Department of Applied Biological Science, Tokyo University of Science, Noda, Japan
- Imaging Frontier Center, Tokyo University of Science, Noda, Japan
| | - Daiki Mitsuka
- Department of Applied Biological Science, Tokyo University of Science, Noda, Japan
| | - Chikako Yagi
- Department of Applied Biological Science, Tokyo University of Science, Noda, Japan
| | - Nobutaka Kitahata
- Department of Applied Biological Science, Tokyo University of Science, Noda, Japan
- Imaging Frontier Center, Tokyo University of Science, Noda, Japan
| | - Tomokazu Tsutsui
- Division of Cellular Dynamics, National Institute for Basic Biology, Okazaki, Japan
| | - Takashi Ueda
- Division of Cellular Dynamics, National Institute for Basic Biology, Okazaki, Japan
| | | | - Juntaro Negi
- Department of Biology, Kyushu University, Fukuoka, Japan
| | - Koh Iba
- Department of Biology, Kyushu University, Fukuoka, Japan
| | - Shigeyuki Betsuyaku
- Japan Science and Technology Agency (JST), PRESTO, Kawaguchi, Japan
- Department of Biological Sciences, The University of Tokyo, Bunkyo-ku, Japan
| | - Kazuyuki Kuchitsu
- Department of Applied Biological Science, Tokyo University of Science, Noda, Japan
- Imaging Frontier Center, Tokyo University of Science, Noda, Japan
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166
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Toh S, Inoue S, Toda Y, Yuki T, Suzuki K, Hamamoto S, Fukatsu K, Aoki S, Uchida M, Asai E, Uozumi N, Sato A, Kinoshita T. Identification and Characterization of Compounds that Affect Stomatal Movements. PLANT & CELL PHYSIOLOGY 2018; 59:1568-1580. [PMID: 29635388 DOI: 10.1093/pcp/pcy061] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Accepted: 03/13/2018] [Indexed: 05/09/2023]
Abstract
Regulation of stomatal aperture is essential for plant growth and survival in response to environmental stimuli. Opening of stomata induces uptake of CO2 for photosynthesis and transpiration, which enhances uptake of nutrients from roots. Light is the most important stimulus for stomatal opening. Under drought stress, the plant hormone ABA induces stomatal closure to prevent water loss. However, the molecular mechanisms of stomatal movements are not fully understood. In this study, we screened chemical libraries to identify compounds that affect stomatal movements in Commelina benghalensis and characterize the underlying molecular mechanisms. We identified nine stomatal closing compounds (SCL1-SCL9) that suppress light-induced stomatal opening by >50%, and two compounds (temsirolimus and CP-100356) that induce stomatal opening in the dark. Further investigations revealed that SCL1 and SCL2 had no effect on autophosphorylation of phototropin or the activity of the inward-rectifying plasma membrane (PM) K+ channel, KAT1, but suppressed blue light-induced phosphorylation of the penultimate residue, threonine, in PM H+-ATPase, which is a key enzyme for stomatal opening. SCL1 and SCL2 had no effect on ABA-dependent responses, including seed germination and expression of ABA-induced genes. These results suggest that SCL1 and SCL2 suppress light-induced stomatal opening at least in part by inhibiting blue light-induced activation of PM H+-ATPase, but not by the ABA signaling pathway. Interestingly, spraying leaves onto dicot and monocot plants with SCL1 suppressed wilting of leaves, indicating that inhibition of stomatal opening by these compounds confers tolerance to drought stress in plants.
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Affiliation(s)
- Shigeo Toh
- Division of Biological Science, Graduate School of Science, Nagoya University, Chikusa, Nagoya, Japan
| | - Shinpei Inoue
- Division of Biological Science, Graduate School of Science, Nagoya University, Chikusa, Nagoya, Japan
| | - Yosuke Toda
- JST PRESTO, 7 Gobancho, Chiyoda, Tokyo, Japan
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya, Japan
| | - Takahiro Yuki
- Division of Biological Science, Graduate School of Science, Nagoya University, Chikusa, Nagoya, Japan
| | - Kyota Suzuki
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Aobayama 6-6-07, Sendai, Japan
| | - Shin Hamamoto
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Aobayama 6-6-07, Sendai, Japan
| | - Kohei Fukatsu
- Division of Biological Science, Graduate School of Science, Nagoya University, Chikusa, Nagoya, Japan
| | - Saya Aoki
- Division of Biological Science, Graduate School of Science, Nagoya University, Chikusa, Nagoya, Japan
| | - Mami Uchida
- Division of Biological Science, Graduate School of Science, Nagoya University, Chikusa, Nagoya, Japan
| | - Eri Asai
- Division of Biological Science, Graduate School of Science, Nagoya University, Chikusa, Nagoya, Japan
| | - Nobuyuki Uozumi
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Aobayama 6-6-07, Sendai, Japan
| | - Ayato Sato
- JST PRESTO, 7 Gobancho, Chiyoda, Tokyo, Japan
| | - Toshinori Kinoshita
- Division of Biological Science, Graduate School of Science, Nagoya University, Chikusa, Nagoya, Japan
- JST PRESTO, 7 Gobancho, Chiyoda, Tokyo, Japan
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167
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Chen G, Li X, Qiao X, Li J, Wang L, Kou X, Wu X, Wang G, Yin H, Wang P, Zhang S, Wu J. Genome-wide survey and expression analysis of the SLAC/SLAH gene family in pear (Pyrus bretschneideri) and other members of the Rosaceae. Genomics 2018; 111:1097-1107. [PMID: 31533901 DOI: 10.1016/j.ygeno.2018.07.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 06/11/2018] [Accepted: 07/05/2018] [Indexed: 01/08/2023]
Abstract
S-type anion channels, which play important roles in plant anion (such as nitrate and chloride) transport, growth and development, abiotic stress responses and hormone signaling. However, there is far less information about this family in Rosaceae species. We performed a genome-wide analysis and identified SLAC/SLAH gene family members in pear (Pyrus bretschneideri) and four other species of Rosaceae. A total of 21 SLAC/SLAH genes were identified from the five Rosaceae species. Based on the structural characteristics and a phylogenetic analysis of these genes, the SLAC/SLAH gene family could be classified into three main groups. Transcriptome data demonstrated that PbrSLAC/SLAH genes were detected in all parts of the pear. PbrSLAC/SLAH genes were only located on the plasma membrane in transient expression experiments in Arabidopsis protoplasts cells. These results provide valuable information that increases our understanding of the evolution, expression and functions of the SLAC/SLAH gene family in higher plants.
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Affiliation(s)
- Guodong Chen
- Center of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiaolong Li
- Center of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Xin Qiao
- Center of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Jiaming Li
- Center of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Li Wang
- Center of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiaobing Kou
- Center of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiao Wu
- Center of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Guoming Wang
- Center of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Hao Yin
- Center of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Peng Wang
- Center of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Shaoling Zhang
- Center of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Juyou Wu
- Center of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
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168
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Oikawa T, Ishimaru Y, Munemasa S, Takeuchi Y, Washiyama K, Hamamoto S, Yoshikawa N, Mutara Y, Uozumi N, Ueda M. Ion Channels Regulate Nyctinastic Leaf Opening in Samanea saman. Curr Biol 2018; 28:2230-2238.e7. [PMID: 29983317 DOI: 10.1016/j.cub.2018.05.042] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Revised: 05/07/2018] [Accepted: 05/15/2018] [Indexed: 01/13/2023]
Abstract
The circadian leaf opening and closing (nyctinasty) of Fabaceae has attracted scientists' attention since the era of Charles Darwin. Nyctinastic movement is triggered by the alternate swelling and shrinking of motor cells at the base of the leaf. This, in turn, is facilitated by changing osmotic pressures brought about by ion flow through anion and potassium ion channels. However, key regulatory ion channels and molecular mechanisms remain largely unknown. Here, we identify three key ion channels in mimosoid tree Samanea saman: the slow-type anion channels, SsSLAH1 and SsSLAH3, and the Shaker-type potassium channel, SPORK2. We show that cell-specific circadian expression of SsSLAH1 plays a key role in nyctinastic leaf opening. In addition, SsSLAH1 co-expressed with SsSLAH3 in flexor (abaxial) motor cells promoted leaf opening. We confirm the importance of SLAH1 in leaf movement using SLAH1-impaired Glycine max. Identification of this "master player" advances our molecular understanding of nyctinasty.
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Affiliation(s)
- Takaya Oikawa
- Graduate School of Science, Tohoku University, 6-3, Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - Yasuhiro Ishimaru
- Graduate School of Science, Tohoku University, 6-3, Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - Shintaro Munemasa
- Graduate School of Environmental and Life Science, Okayama University, 1-1-1, Tsushima-naka, Kita-ku, Okayama 700-8530, Japan
| | - Yusuke Takeuchi
- Graduate School of Science, Tohoku University, 6-3, Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - Kento Washiyama
- Graduate School of Science, Tohoku University, 6-3, Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - Shin Hamamoto
- Graduate School of Engineering, Tohoku University, 6-6-07, Aobayama, Aoba-ku, Sendai 980-8579, Japan
| | - Nobuyuki Yoshikawa
- Faculty of Agriculture, Iwate University, 3-18-8, Ueda, Morioka 020-8550, Japan
| | - Yoshiyuki Mutara
- Graduate School of Environmental and Life Science, Okayama University, 1-1-1, Tsushima-naka, Kita-ku, Okayama 700-8530, Japan
| | - Nobuyuki Uozumi
- Graduate School of Engineering, Tohoku University, 6-6-07, Aobayama, Aoba-ku, Sendai 980-8579, Japan
| | - Minoru Ueda
- Graduate School of Science, Tohoku University, 6-3, Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-8578, Japan; Graduate School of Environmental and Life Science, Okayama University, 1-1-1, Tsushima-naka, Kita-ku, Okayama 700-8530, Japan.
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169
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Nishimura N, Tsuchiya W, Moresco JJ, Hayashi Y, Satoh K, Kaiwa N, Irisa T, Kinoshita T, Schroeder JI, Yates JR, Hirayama T, Yamazaki T. Control of seed dormancy and germination by DOG1-AHG1 PP2C phosphatase complex via binding to heme. Nat Commun 2018; 9:2132. [PMID: 29875377 PMCID: PMC5989226 DOI: 10.1038/s41467-018-04437-9] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Accepted: 05/01/2018] [Indexed: 12/23/2022] Open
Abstract
Abscisic acid (ABA) regulates abiotic stress and developmental responses including regulation of seed dormancy to prevent seeds from germinating under unfavorable environmental conditions. ABA HYPERSENSITIVE GERMINATION1 (AHG1) encoding a type 2C protein phosphatase (PP2C) is a central negative regulator of ABA response in germination; however, the molecular function and regulation of AHG1 remain elusive. Here we report that AHG1 interacts with DELAY OF GERMINATION1 (DOG1), which is a pivotal positive regulator in seed dormancy. DOG1 acts upstream of AHG1 and impairs the PP2C activity of AHG1 in vitro. Furthermore, DOG1 has the ability to bind heme. Binding of DOG1 to AHG1 and heme are independent processes, but both are essential for DOG1 function in vivo. Our study demonstrates that AHG1 and DOG1 constitute an important regulatory system for seed dormancy and germination by integrating multiple environmental signals, in parallel with the PYL/RCAR ABA receptor-mediated regulatory system. The hormone abscisic acid (ABA) prevents seeds from germination when conditions are not suitable. Here the authors show that DOG1, a positive regulator of germination, impairs ABA signaling via genetic and physical interactions with the AHG1 phosphatase and that DOG1 binding to heme is required for this activity.
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Affiliation(s)
- Noriyuki Nishimura
- Radiation Breeding Division, Institute of Crop Science, National Agriculture and Food Research Organization, 2425 Kamimurata, Hitachiohmiya, Ibaraki, 319-2293, Japan. .,Division of Basic Research, Institute of Crop Science, National Agriculture and Food Research Organization, 2-1-2 Kannondai, Tsukuba, Ibaraki, 305-8518, Japan.
| | - Wataru Tsuchiya
- Structural Biology Team, Advanced Analysis Center, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, 305-8602, Japan
| | - James J Moresco
- Department of Molecular Medicine, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Yuki Hayashi
- Division of Biological Science, Graduate School of Science, Nagoya University, Nagoya, 464-8602, Japan
| | - Kouji Satoh
- Radiation Breeding Division, Institute of Crop Science, National Agriculture and Food Research Organization, 2425 Kamimurata, Hitachiohmiya, Ibaraki, 319-2293, Japan
| | - Nahomi Kaiwa
- Radiation Breeding Division, Institute of Crop Science, National Agriculture and Food Research Organization, 2425 Kamimurata, Hitachiohmiya, Ibaraki, 319-2293, Japan
| | - Tomoko Irisa
- Radiation Breeding Division, Institute of Crop Science, National Agriculture and Food Research Organization, 2425 Kamimurata, Hitachiohmiya, Ibaraki, 319-2293, Japan
| | - Toshinori Kinoshita
- Division of Biological Science, Graduate School of Science, Nagoya University, Nagoya, 464-8602, Japan.,Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya, 464-8602, Japan
| | - Julian I Schroeder
- Division of Biological Sciences, Cell and Developmental Biology Section, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0116, USA
| | - John R Yates
- Department of Molecular Medicine, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Takashi Hirayama
- Institute of Plant Science and Resources, Okayama University, 2-20-1 Chuo, Kurashiki, Okayama, 710-0046, Japan
| | - Toshimasa Yamazaki
- Structural Biology Team, Advanced Analysis Center, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, 305-8602, Japan
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170
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Gamage D, Thompson M, Sutherland M, Hirotsu N, Makino A, Seneweera S. New insights into the cellular mechanisms of plant growth at elevated atmospheric carbon dioxide concentrations. PLANT, CELL & ENVIRONMENT 2018; 41:1233-1246. [PMID: 29611206 DOI: 10.1111/pce.13206] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 03/21/2018] [Accepted: 03/22/2018] [Indexed: 05/05/2023]
Abstract
Rising atmospheric carbon dioxide concentration ([CO2 ]) significantly influences plant growth, development, and biomass. Increased photosynthesis rate, together with lower stomatal conductance, has been identified as the key factors that stimulate plant growth at elevated [CO2 ] (e[CO2 ]). However, variations in photosynthesis and stomatal conductance alone cannot fully explain the dynamic changes in plant growth. Stimulation of photosynthesis at e[CO2 ] is always associated with post-photosynthetic secondary metabolic processes that include carbon and nitrogen metabolism, cell cycle functions, and hormonal regulation. Most studies have focused on photosynthesis and stomatal conductance in response to e[CO2 ], despite the emerging evidence of e[CO2 ]'s role in moderating secondary metabolism in plants. In this review, we briefly discuss the effects of e[CO2 ] on photosynthesis and stomatal conductance and then focus on the changes in other cellular mechanisms and growth processes at e[CO2 ] in relation to plant growth and development. Finally, knowledge gaps in understanding plant growth responses to e[CO2 ] have been identified with the aim of improving crop productivity under a CO2 rich atmosphere.
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Affiliation(s)
- Dananjali Gamage
- Centre for Crop Health, University of Southern Queensland, Toowoomba, Queensland, 4350, Australia
- Department of Agricultural Biology, Faculty of Agriculture, University of Ruhuna, Kamburupitiya, 81 100, Sri Lanka
| | - Michael Thompson
- Centre for Crop Health, University of Southern Queensland, Toowoomba, Queensland, 4350, Australia
| | - Mark Sutherland
- Centre for Crop Health, University of Southern Queensland, Toowoomba, Queensland, 4350, Australia
| | - Naoki Hirotsu
- Centre for Crop Health, University of Southern Queensland, Toowoomba, Queensland, 4350, Australia
- Faculty of Life Sciences, Toyo University, Oura-gun, Gunma, 374-0193, Japan
| | - Amane Makino
- Division of Life Sciences, Graduate School of Agricultural Science, Tohoku University, Tsutsumidori-Amamiyamachi, Sendai, 981-8555, Japan
| | - Saman Seneweera
- Centre for Crop Health, University of Southern Queensland, Toowoomba, Queensland, 4350, Australia
- Department of Agricultural Biology, Faculty of Agriculture, University of Ruhuna, Kamburupitiya, 81 100, Sri Lanka
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171
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Saito S, Hamamoto S, Moriya K, Matsuura A, Sato Y, Muto J, Noguchi H, Yamauchi S, Tozawa Y, Ueda M, Hashimoto K, Köster P, Dong Q, Held K, Kudla J, Utsumi T, Uozumi N. N-myristoylation and S-acylation are common modifications of Ca 2+ -regulated Arabidopsis kinases and are required for activation of the SLAC1 anion channel. THE NEW PHYTOLOGIST 2018; 218:1504-1521. [PMID: 29498046 DOI: 10.1111/nph.15053] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 01/12/2018] [Indexed: 05/26/2023]
Abstract
N-myristoylation and S-acylation promote protein membrane association, allowing regulation of membrane proteins. However, how widespread this targeting mechanism is in plant signaling processes remains unknown. Through bioinformatics analyses, we determined that among plant protein kinase families, the occurrence of motifs indicative for dual lipidation by N-myristoylation and S-acylation is restricted to only five kinase families, including the Ca2+ -regulated CDPK-SnRK and CBL protein families. We demonstrated N-myristoylation of CDPK-SnRKs and CBLs by incorporation of radiolabeled myristic acid. We focused on CPK6 and CBL5 as model cases and examined the impact of dual lipidation on their function by fluorescence microscopy, electrophysiology and functional complementation of Arabidopsis mutants. We found that both lipid modifications were required for proper targeting of CBL5 and CPK6 to the plasma membrane. Moreover, we identified CBL5-CIPK11 complexes as phosphorylating and activating the guard cell anion channel SLAC1. SLAC1 activation by CPK6 or CBL5-CIPK11 was strictly dependent on dual lipid modification, and loss of CPK6 lipid modification prevented functional complementation of cpk3 cpk6 guard cell mutant phenotypes. Our findings establish the general importance of dual lipid modification for Ca2+ signaling processes, and demonstrate their requirement for guard cell anion channel regulation.
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Affiliation(s)
- Shunya Saito
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Aobayama 6-6-07, Sendai, 980-8579, Japan
| | - Shin Hamamoto
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Aobayama 6-6-07, Sendai, 980-8579, Japan
| | - Koko Moriya
- Department of Biological Chemistry, Faculty of Agriculture, Yamaguchi University, Yamaguchi, 753-8515, Japan
| | - Aiko Matsuura
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, 464-8601, Japan
| | - Yoko Sato
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Aobayama 6-6-07, Sendai, 980-8579, Japan
| | - Jun Muto
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Aobayama 6-6-07, Sendai, 980-8579, Japan
| | - Hiroto Noguchi
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Aobayama 6-6-07, Sendai, 980-8579, Japan
| | - Seiji Yamauchi
- Cell-Free Science and Technology Research Center, Ehime University, Matsuyama, 790-8577, Japan
| | - Yuzuru Tozawa
- Graduate School of Science and Engineering, Saitama University, Saitama, 338-8570, Japan
| | - Minoru Ueda
- Graduate School of Science, Tohoku University, Aramaki-Aza Aoba 6-3, Aoba-ku, Sendai, 980-8579, Japan
| | - Kenji Hashimoto
- Institut für Biologie und Biotechnologie der Pflanzen, Universität Münster, Schlossplatz 7, 48149, Münster, Germany
| | - Philipp Köster
- Institut für Biologie und Biotechnologie der Pflanzen, Universität Münster, Schlossplatz 7, 48149, Münster, Germany
| | - Qiuyan Dong
- Institut für Biologie und Biotechnologie der Pflanzen, Universität Münster, Schlossplatz 7, 48149, Münster, Germany
| | - Katrin Held
- Institut für Biologie und Biotechnologie der Pflanzen, Universität Münster, Schlossplatz 7, 48149, Münster, Germany
| | - Jörg Kudla
- Institut für Biologie und Biotechnologie der Pflanzen, Universität Münster, Schlossplatz 7, 48149, Münster, Germany
- College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Toshihiko Utsumi
- Department of Biological Chemistry, Faculty of Agriculture, Yamaguchi University, Yamaguchi, 753-8515, Japan
| | - Nobuyuki Uozumi
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Aobayama 6-6-07, Sendai, 980-8579, Japan
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172
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Manishankar P, Wang N, Köster P, Alatar AA, Kudla J. Calcium Signaling during Salt Stress and in the Regulation of Ion Homeostasis. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:5003005. [PMID: 29800460 DOI: 10.1093/jxb/ery201] [Citation(s) in RCA: 128] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Indexed: 05/20/2023]
Abstract
Soil composition largely defines the living conditions of plants and represents one of their most relevant, dynamic and complex environmental cues. The effective concentrations of many either tolerated or essential ions and compounds in the soil usually differ from the optimum that would be most suitable for plants. In this regard, salinity - caused by excess of NaCl - represents a widespread adverse growth condition but also shortage of ions like K+, NO3- and Fe2+ restrains plant growth. During the past years many components and mechanisms that function in the sensing and establishment of ion homeostasis have been identified and characterized. Here, we reflect on recent insights that extended our understanding of components and mechanisms, which govern and fine-tune plant salt stress tolerance and ion homeostasis. We put special emphasis on mechanisms that allow for interconnection of the salt overly sensitivity pathway with plant development and discuss newly emerging functions of Ca2+ signaling in salinity tolerance. Moreover, we review and discuss accumulating evidence for a central and unifying role of Ca2+ signaling and Ca2+ dependent protein phosphorylation in regulating sensing, uptake, transport and storage processes of various ions. Finally, based on this cross-field inventory, we deduce emerging concepts and arising questions for future research.
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Affiliation(s)
- P Manishankar
- Institut für Biologie und Biotechnologie der Pflanzen, WWU Münster, Münster, Germany
| | - N Wang
- Institut für Biologie und Biotechnologie der Pflanzen, WWU Münster, Münster, Germany
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan, China
| | - P Köster
- Institut für Biologie und Biotechnologie der Pflanzen, WWU Münster, Münster, Germany
| | - A A Alatar
- Department of Botany & Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - J Kudla
- Institut für Biologie und Biotechnologie der Pflanzen, WWU Münster, Münster, Germany
- Department of Botany & Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
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173
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Konrad KR, Maierhofer T, Hedrich R. Spatio-temporal Aspects of Ca2+ Signalling: Lessons from Guard Cells and Pollen Tubes. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:4986225. [PMID: 29701811 DOI: 10.1093/jxb/ery154] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Indexed: 05/06/2023]
Abstract
Changes in cytosolic Ca2+ concentration ([Ca2+]cyt) serve to transmit information in eukaryotic cells. The involvement of this second messenger in plant cell growth as well as osmotic- and water relations is well established. After almost 40 years of intense research on the coding and decoding of plant Ca2+ signals, numerous proteins involved in Ca2+ action have been identified. However, we are still far from understanding the complexity of Ca2+ networks. New in vivo Ca2+ imaging techniques combined with molecular genetics allow visualisation of spatio-temporal aspects of Ca2+ signalling. In parallel, cell biology together with protein biochemistry and electrophysiology are able to dissect information processing by this second messenger in space and time. Here we focus on the time-resolved changes in cellular events upon Ca2+ signals, concentrating on the two best-studied cell types, pollen tubes and guard cells. We put their signalling networks side by side, compare them with those of other cell types and discuss rapid signalling in the context of Ca2+ transients and oscillations to regulate ion homeostasis.
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Affiliation(s)
- K R Konrad
- University of Wuerzburg, Julius-Von-Sachs Institute for Biosciences, Department of Botany I, Wuerzburg, Germany
| | - T Maierhofer
- University of Wuerzburg, Julius-Von-Sachs Institute for Biosciences, Department of Botany I, Wuerzburg, Germany
| | - R Hedrich
- University of Wuerzburg, Julius-Von-Sachs Institute for Biosciences, Department of Botany I, Wuerzburg, Germany
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174
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He J, Zhang R, Peng K, Tagliavia C, Li S, Xue S, Liu A, Hu H, Zhang J, Hubbard KE, Held K, McAinsh MR, Gray JE, Kudla J, Schroeder JI, Liang Y, Hetherington AM. The BIG protein distinguishes the process of CO 2 -induced stomatal closure from the inhibition of stomatal opening by CO 2. THE NEW PHYTOLOGIST 2018; 218:232-241. [PMID: 29292834 PMCID: PMC5887946 DOI: 10.1111/nph.14957] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Accepted: 11/12/2017] [Indexed: 05/09/2023]
Abstract
We conducted an infrared thermal imaging-based genetic screen to identify Arabidopsis mutants displaying aberrant stomatal behavior in response to elevated concentrations of CO2 . This approach resulted in the isolation of a novel allele of the Arabidopsis BIG locus (At3g02260) that we have called CO2 insensitive 1 (cis1). BIG mutants are compromised in elevated CO2 -induced stomatal closure and bicarbonate activation of S-type anion channel currents. In contrast with the wild-type, they fail to exhibit reductions in stomatal density and index when grown in elevated CO2 . However, like the wild-type, BIG mutants display inhibition of stomatal opening when exposed to elevated CO2 . BIG mutants also display wild-type stomatal aperture responses to the closure-inducing stimulus abscisic acid (ABA). Our results indicate that BIG is a signaling component involved in the elevated CO2 -mediated control of stomatal development. In the control of stomatal aperture by CO2 , BIG is only required in elevated CO2 -induced closure and not in the inhibition of stomatal opening by this environmental signal. These data show that, at the molecular level, the CO2 -mediated inhibition of opening and promotion of stomatal closure signaling pathways are separable and BIG represents a distinguishing element in these two CO2 -mediated responses.
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Affiliation(s)
- Jingjing He
- State Key Laboratory of Hybrid RiceDepartment of Plant SciencesCollege of Life SciencesWuhan UniversityWuhan430072China
| | - Ruo‐Xi Zhang
- State Key Laboratory of Hybrid RiceDepartment of Plant SciencesCollege of Life SciencesWuhan UniversityWuhan430072China
| | - Kai Peng
- School of Biological SciencesLife Sciences Building24 Tyndall AvenueBristolBS8 1TQUK
| | | | - Siwen Li
- State Key Laboratory of Hybrid RiceDepartment of Plant SciencesCollege of Life SciencesWuhan UniversityWuhan430072China
| | - Shaowu Xue
- College of Life Science and TechnologyHuazhong Agricultural UniversityWuhan430070China
| | - Amy Liu
- Cell and Developmental Biology SectionDivision of Biological SciencesUniversity of California at San DiegoLa JollaCA92093USA
| | - Honghong Hu
- College of Life Science and TechnologyHuazhong Agricultural UniversityWuhan430070China
- Cell and Developmental Biology SectionDivision of Biological SciencesUniversity of California at San DiegoLa JollaCA92093USA
| | - Jingbo Zhang
- Cell and Developmental Biology SectionDivision of Biological SciencesUniversity of California at San DiegoLa JollaCA92093USA
| | - Katharine E. Hubbard
- Cell and Developmental Biology SectionDivision of Biological SciencesUniversity of California at San DiegoLa JollaCA92093USA
- School of Environmental SciencesUniversity of HullHullHU6 7RXUK
| | - Katrin Held
- Institut für Biologie und Biotechnologie der PflanzenUniversität MünsterSchlossplatz 7Münster48149Germany
| | | | - Julie E. Gray
- Department of Molecular Biology and BiotechnologyUniversity of SheffieldFirth Court, Western BankSheffieldS10 2TNUK
| | - Jörg Kudla
- Institut für Biologie und Biotechnologie der PflanzenUniversität MünsterSchlossplatz 7Münster48149Germany
| | - Julian I. Schroeder
- Cell and Developmental Biology SectionDivision of Biological SciencesUniversity of California at San DiegoLa JollaCA92093USA
| | - Yun‐Kuan Liang
- State Key Laboratory of Hybrid RiceDepartment of Plant SciencesCollege of Life SciencesWuhan UniversityWuhan430072China
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175
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Kudla J, Becker D, Grill E, Hedrich R, Hippler M, Kummer U, Parniske M, Romeis T, Schumacher K. Advances and current challenges in calcium signaling. THE NEW PHYTOLOGIST 2018; 218:414-431. [PMID: 29332310 DOI: 10.1111/nph.14966] [Citation(s) in RCA: 323] [Impact Index Per Article: 53.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 11/21/2017] [Indexed: 05/21/2023]
Abstract
Content Summary 414 I. Introduction 415 II. Ca2+ importer and exporter in plants 415 III. The Ca2+ decoding toolkit in plants 415 IV. Mechanisms of Ca2+ signal decoding 417 V. Immediate Ca2+ signaling in the regulation of ion transport 418 VI. Ca2+ signal integration into long-term ABA responses 419 VII Integration of Ca2+ and hormone signaling through dynamic complex modulation of the CCaMK/CYCLOPS complex 420 VIII Ca2+ signaling in mitochondria and chloroplasts 422 IX A view beyond recent advances in Ca2+ imaging 423 X Modeling approaches in Ca2+ signaling 424 XI Conclusions: Ca2+ signaling a still young blooming field of plant research 424 Acknowledgements 425 ORCID 425 References 425 SUMMARY: Temporally and spatially defined changes in Ca2+ concentration in distinct compartments of cells represent a universal information code in plants. Recently, it has become evident that Ca2+ signals not only govern intracellular regulation but also appear to contribute to long distance or even organismic signal propagation and physiological response regulation. Ca2+ signals are shaped by an intimate interplay of channels and transporters, and during past years important contributing individual components have been identified and characterized. Ca2+ signals are translated by an elaborate toolkit of Ca2+ -binding proteins, many of which function as Ca2+ sensors, into defined downstream responses. Intriguing progress has been achieved in identifying specific modules that interconnect Ca2+ decoding proteins and protein kinases with downstream target effectors, and in characterizing molecular details of these processes. In this review, we reflect on recent major advances in our understanding of Ca2+ signaling and cover emerging concepts and existing open questions that should be informative also for scientists that are currently entering this field of ever-increasing breath and impact.
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Affiliation(s)
- Jörg Kudla
- Institut für Biologie und Biotechnologie der Pflanzen, Universität Münster, Schlossplatz 7/8, 48149, Münster, Germany
| | - Dirk Becker
- Department of Molecular Plant Physiology and Biophysics, University Würzburg, Julius-von-Sachs Platz 2, 97082, Würzburg, Germany
| | - Erwin Grill
- Lehrstuhl für Botanik, Technische Universität München, Am Hochanger 4, D-85354, Freising, Germany
| | - Rainer Hedrich
- Department of Molecular Plant Physiology and Biophysics, University Würzburg, Julius-von-Sachs Platz 2, 97082, Würzburg, Germany
| | - Michael Hippler
- Institut für Biologie und Biotechnologie der Pflanzen, Universität Münster, Schlossplatz 7/8, 48149, Münster, Germany
| | - Ursula Kummer
- Department of Modeling of Biological Processes, COS Heidelberg/Bioquant, Heidelberg University, Im Neuenheimer Feld 267, 69120, Heidelberg, Germany
| | - Martin Parniske
- Institute of Genetics, Biocenter University of Munich (LMU), Großhaderner Straße 4, 82152, Martinsried, Germany
| | - Tina Romeis
- Department of Plant Biochemistry, Dahlem Center of Plant Sciences, Freie Universität Berlin, 14195, Berlin, Germany
| | - Karin Schumacher
- Department of Developmental Biology, Centre for Organismal Studies (COS), University of Heidelberg, Im Neuenheimer Feld 230, 69120, Heidelberg, Germany
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176
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Li Y, Xu S, Wang Z, He L, Xu K, Wang G. Glucose triggers stomatal closure mediated by basal signaling through HXK1 and PYR/RCAR receptors in Arabidopsis. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:1471-1484. [PMID: 29444316 PMCID: PMC5888972 DOI: 10.1093/jxb/ery024] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 01/11/2018] [Indexed: 05/04/2023]
Abstract
Sugars play important roles in regulating plant growth, development, and stomatal movement. Here, we found that glucose triggered stomatal closure in a dose- and time-dependent manner in Arabidopsis. Pharmacological data showed that glucose-induced stomatal closure was greatly inhibited by catalase [CAT; a reactive oxygen species (ROS) scavenger], diphenyleneiodonium chloride (DPI; an NADPH oxidase inhibitor), lanthanum chloride (LaCl3; a Ca2+ channel blocker), EGTA (a Ca2+ chelator), and two nitrate reductase (NR) inhibitors, tungstate and sodium azide (NaN3), while it was not affected by salicylhydroxamic acid (SHAM; a peroxidase inhibitor). Moreover, glucose induced ROS and nitric oxide (NO) production in guard cells of Arabidopsis. The ROS production was almost completely removed by CAT, strongly restricted by DPI, and was not affected by SHAM. NO production was partially suppressed by tungstate and NaN3, and the levels of NO were significantly reduced in the nia1-1nia2-5 mutant. Additionally, glucose-triggered stomatal closure was significantly impaired in gin1-1, gin2-1, pyr1pyl1pyl2pyl4, abi1-1, ost1, slac1-4, cpk6-1, and nia1-1nia2-5 mutants. Likewise, the reductions in leaf stomatal conductance (gs) and transpiration rate (E) caused by glucose were reversed in the above mutants. These results suggest that glucose-triggered stomatal closure may be dependent on basal signaling through PYR/RCAR receptors and hexokinase1 (HXK1).
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Affiliation(s)
- Yan Li
- Institute of Ecology, College of Life Sciences, Zhejiang University, Hangzhou, China
| | - Shanshan Xu
- Natural History Research Center, Shanghai Natural History Museum, Branch of Shanghai Science & Technology Museum, Shanghai, China
| | - Zhiwei Wang
- Institute of Ecology, College of Life Sciences, Zhejiang University, Hangzhou, China
| | - Lingchao He
- Institute of Ecology, College of Life Sciences, Zhejiang University, Hangzhou, China
| | - Kang Xu
- Institute of Ecology, College of Life Sciences, Zhejiang University, Hangzhou, China
| | - Genxuan Wang
- Institute of Ecology, College of Life Sciences, Zhejiang University, Hangzhou, China
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177
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Zhao C, Haigh AM, Holford P, Chen ZH. Roles of Chloroplast Retrograde Signals and Ion Transport in Plant Drought Tolerance. Int J Mol Sci 2018; 19:E963. [PMID: 29570668 PMCID: PMC5979362 DOI: 10.3390/ijms19040963] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 03/18/2018] [Accepted: 03/20/2018] [Indexed: 01/09/2023] Open
Abstract
Worldwide, drought affects crop yields; therefore, understanding plants' strategies to adapt to drought is critical. Chloroplasts are key regulators of plant responses, and signals from chloroplasts also regulate nuclear gene expression during drought. However, the interactions between chloroplast-initiated retrograde signals and ion channels under stress are still not clear. In this review, we summarise the retrograde signals that participate in regulating plant stress tolerance. We compare chloroplastic transporters that modulate retrograde signalling through retrograde biosynthesis or as critical components in retrograde signalling. We also discuss the roles of important plasma membrane and tonoplast ion transporters that are involved in regulating stomatal movement. We propose how retrograde signals interact with ion transporters under stress.
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Affiliation(s)
- Chenchen Zhao
- School of Science and Health, Western Sydney University, Penrith, NSW 2751, Australia.
| | - Anthony M Haigh
- School of Science and Health, Western Sydney University, Penrith, NSW 2751, Australia.
| | - Paul Holford
- School of Science and Health, Western Sydney University, Penrith, NSW 2751, Australia.
| | - Zhong-Hua Chen
- School of Science and Health, Western Sydney University, Penrith, NSW 2751, Australia.
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW 2751, Australia.
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178
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Ma T, Yoo MJ, Zhang T, Liu L, Koh J, Song WY, Harmon AC, Sha W, Chen S. Characterization of thiol-based redox modifications of Brassica napusSNF1-related protein kinase 2.6-2C. FEBS Open Bio 2018; 8:628-645. [PMID: 29632815 PMCID: PMC5881534 DOI: 10.1002/2211-5463.12401] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2017] [Revised: 12/09/2017] [Accepted: 01/29/2018] [Indexed: 01/04/2023] Open
Abstract
Sucrose nonfermenting 1‐related protein kinase 2.6 (SnRK2.6), also known as Open Stomata 1 (OST1) in Arabidopsis thaliana, plays a pivotal role in abscisic acid (ABA)‐mediated stomatal closure. Four SnRK2.6 paralogs were identified in the Brassica napus genome in our previous work. Here we studied one of the paralogs, BnSnRK2.6‐2C, which was transcriptionally induced by ABA in guard cells. Recombinant BnSnRK2.6‐2C exhibited autophosphorylation activity and its phosphorylation sites were mapped. The autophosphorylation activity was inhibited by S‐nitrosoglutathione (GSNO) and by oxidized glutathione (GSSG), and the inhibition was reversed by reductants. Using monobromobimane (mBBr) labeling, we demonstrated a dose‐dependent modification of BnSnRK2.6‐2C by GSNO. Furthermore, mass spectrometry analysis revealed previously uncharacterized thiol‐based modifications including glutathionylation and sulfonic acid formation. Of the six cysteine residues in BnSnRK2.6‐2C, C159 was found to have different types of thiol modifications, suggesting its high redox sensitivity and versatility. In addition, mBBr labeling on tyrosine residues was identified. Collectively, these data provide detailed biochemical characterization of redox‐induced modifications and changes of the BnSnRK2.6‐2C activity.
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Affiliation(s)
- Tianyi Ma
- College of Life Sciences Northeast Forestry University Harbin China.,Department of Biology Genetics Institute University of Florida Gainesville FL USA.,College of Life Sciences, Agriculture and Forestry Qiqihar University Heilongjiang China
| | - Mi-Jeong Yoo
- Department of Biology Genetics Institute University of Florida Gainesville FL USA
| | - Tong Zhang
- Department of Biology Genetics Institute University of Florida Gainesville FL USA
| | - Lihong Liu
- Department of Biology Genetics Institute University of Florida Gainesville FL USA
| | - Jin Koh
- Proteomics and Mass Spectrometry Interdisciplinary Center for Biotechnology Research University of Florida Gainesville FL USA
| | - Wen-Yuan Song
- Department of Plant Pathology University of Florida Gainesville FL USA.,Plant Molecular and Cellular Biology University of Florida Gainesville FL USA
| | - Alice C Harmon
- Department of Biology Genetics Institute University of Florida Gainesville FL USA.,Plant Molecular and Cellular Biology University of Florida Gainesville FL USA
| | - Wei Sha
- College of Life Sciences Northeast Forestry University Harbin China.,College of Life Sciences, Agriculture and Forestry Qiqihar University Heilongjiang China
| | - Sixue Chen
- Department of Biology Genetics Institute University of Florida Gainesville FL USA.,Proteomics and Mass Spectrometry Interdisciplinary Center for Biotechnology Research University of Florida Gainesville FL USA.,Plant Molecular and Cellular Biology University of Florida Gainesville FL USA
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179
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Qi GN, Yao FY, Ren HM, Sun SJ, Tan YQ, Zhang ZC, Qiu BS, Wang YF. The S-Type Anion Channel ZmSLAC1 Plays Essential Roles in Stomatal Closure by Mediating Nitrate Efflux in Maize. PLANT & CELL PHYSIOLOGY 2018; 59:614-623. [PMID: 29390155 DOI: 10.1093/pcp/pcy015] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Accepted: 01/17/2018] [Indexed: 05/20/2023]
Abstract
Diverse stimuli induce stomatal closure by triggering the efflux of osmotic anions, which is mainly mediated by the main anion channel SLAC1 in plants, and the anion permeability and selectivity of SLAC1 channels from several plant species have been reported to be variable. However, the genetic identity as well as the anion permeability and selectivity of the main S-type anion channel ZmSLAC1 in maize are still unknown. In this study, we identified GRMZM2G106921 as the gene encoding ZmSLAC1 in maize, and the maize mutants zmslac1-1 and zmslac1-2 harboring a mutator (Mu) transposon in ZmSLAC1 exhibited strong insensitive phenotypes of stomatal closure in response to diverse stimuli. We further found that ZmSLAC1 functions as a nitrate-selective anion channel without obvious permeability to chloride, sulfate and malate, clearly different from SLAC1 channels of Arabidopsis thaliana, Brassica rapa ssp. chinensis and Solanum lycopersicum L. Further experimental data show that the expression of ZmSLAC1 successfully rescued the stomatal movement phenotypes of the Arabidopsis double mutant atslac1-3atslah3-2 by mainly restoring nitrate-carried anion channel currents of guard cells. Together, these findings demonstrate that ZmSLAC1 is involved in stomatal closure mainly by mediating the efflux of nitrate in maize.
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Affiliation(s)
- Guo-Ning Qi
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Fen-Yong Yao
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China
- University of Chinese Academy of Sciences, Shanghai 200032, China
| | - Hui-Min Ren
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China
- College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou 310016, Zhejiang Province, China
| | - Shu-Jing Sun
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China
| | - Yan-Qiu Tan
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China
- University of Chinese Academy of Sciences, Shanghai 200032, China
| | - Zhong-Chun Zhang
- School of Life Sciences, Hubei Key Laboratory of Genetic Regulation and Integrative Biology, Central China Normal University, Wuhan 430079, Hubei Province, China
| | - Bao-Sheng Qiu
- School of Life Sciences, Hubei Key Laboratory of Genetic Regulation and Integrative Biology, Central China Normal University, Wuhan 430079, Hubei Province, China
| | - Yong-Fei Wang
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China
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180
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Singh BN, Dwivedi P, Sarma BK, Singh GS, Singh HB. Trichoderma asperellum T42 Reprograms Tobacco for Enhanced Nitrogen Utilization Efficiency and Plant Growth When Fed with N Nutrients. FRONTIERS IN PLANT SCIENCE 2018; 9:163. [PMID: 29527216 PMCID: PMC5829606 DOI: 10.3389/fpls.2018.00163] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 01/29/2018] [Indexed: 05/29/2023]
Abstract
Trichoderma spp., are saprophytic fungi that can improve plant growth through increased nutrient acquisition and change in the root architecture. In the present study, we demonstrate that Trichoderma asperellum T42 mediate enhancement in host biomass, total nitrogen content, nitric oxide (NO) production and cytosolic Ca2+ accumulation in tobacco. T42 inoculation enhanced lateral root, root hair length, root hair density and root/shoot dry mass in tobacco under deprived nutrients condition. Interestingly, these growth attributes were further elevated in presence of T42 and supplementation of NO3- and NH4+ nutrients to tobacco at 40 and 70 days, particularly in NO3- supplementation, whereas no significant increment was observed in nia30 mutant. In addition, NO production was more in tobacco roots in T42 inoculated plants fed with NO3- nutrient confirming NO generation was dependent on NR pathway. NO3- dependent NO production contributed to increase in lateral root initiation, Ca2+ accumulation and activities of nitrate transporters (NRTs) in tobacco. Higher activities of several NRT genes in response to T42 and N nutrients and suppression of ammonium transporter (AMT1) suggested that induction of high affinity NRTs help NO3- acquisition through roots of tobacco. Among the NRTs NRT2.1 and NRT2.2 were more up-regulated compared to the other NRTs. Addition of sodium nitroprusside (SNP), relative to those supplied with NO3-/NH4+ nutrition and T42 treated plants singly, and with application of NO inhibitor, cPTIO, confirmed the altered NO fluorescence intensity in tobacco roots. Our findings suggest that T42 promoted plant growth significantly ant N content in the tobacco plants grown under N nutrients, notably higher in NO3-, providing insight of the strategy for not only tobacco but probably for other crops as well to adapt to fluctuating nitrate availability in soil.
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Affiliation(s)
- Bansh N. Singh
- Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, India
- Department of Plant Physiology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, India
| | - Padmanabh Dwivedi
- Department of Plant Physiology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, India
| | - Birinchi K. Sarma
- Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, India
| | - Gopal S. Singh
- Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, India
| | - Harikesh B. Singh
- Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, India
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181
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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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182
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Lawson T, Terashima I, Fujita T, Wang Y. Coordination Between Photosynthesis and Stomatal Behavior. THE LEAF: A PLATFORM FOR PERFORMING PHOTOSYNTHESIS 2018. [DOI: 10.1007/978-3-319-93594-2_6] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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183
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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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184
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Kusumi K, Hashimura A, Yamamoto Y, Negi J, Iba K. Contribution of the S-type Anion Channel SLAC1 to Stomatal Control and Its Dependence on Developmental Stage in Rice. PLANT & CELL PHYSIOLOGY 2017; 58:2085-2094. [PMID: 29040767 DOI: 10.1093/pcp/pcx142] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Accepted: 09/09/2017] [Indexed: 06/07/2023]
Abstract
Rice production depends on water availability and carbon fixation by photosynthesis. Therefore, optimal control of stomata, which regulate leaf transpiration and CO2 absorption, is important for high productivity. SLOW ANION CHANNEL-ASSOCIATED 1 (SLAC1) is an S-type anion channel protein that controls stomatal closure in response to elevated CO2. Rice slac1 mutants showed significantly increased stomatal conductance (gs) and enhanced CO2 assimilation. To discern the contribution of stomatal regulation to rice growth, we compared gs in the wild type (WT) and two mutants, slac1 and the dominant-positive mutant SLAC1-F461A, which expresses a point mutation causing an amino acid substitution (F461A) in SLAC1, at different growth stages. Because the side group of F461 is estimated to function as the channel gate, stomata in the SLAC1-F461A mutant are expected to close constitutively. All three lines had maximum gs during the tillering stage, when the gs values were 50% higher in slac1 and 70% lower in SLAC1-F461A, compared with the WT. At the tillering stage, the gs values were highest in the first leaves at the top of the stem and lower in the second and third leaves in all three lines. Both slac1 and SLAC1-F461A retained the ability to change gs in response to the day-night cycle, and showed differences in tillering rate and plant height compared with the WT, and lower grain yield. These observations show that SLAC1 plays a crucial role in regulating stomata in rice at the tillering stage.
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Affiliation(s)
- Kensuke Kusumi
- Department of Biology, Faculty of Science, Kyushu University, Motooka 744, Fukuoka 819-0395, Japan
| | - Ayana Hashimura
- Department of Biology, Faculty of Science, Kyushu University, Motooka 744, Fukuoka 819-0395, Japan
| | - Yoshiko Yamamoto
- Department of Biology, Faculty of Science, Kyushu University, Motooka 744, Fukuoka 819-0395, Japan
| | - Juntaro Negi
- Department of Biology, Faculty of Science, Kyushu University, Motooka 744, Fukuoka 819-0395, Japan
| | - Koh Iba
- Department of Biology, Faculty of Science, Kyushu University, Motooka 744, Fukuoka 819-0395, Japan
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185
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Hiyama A, Takemiya A, Munemasa S, Okuma E, Sugiyama N, Tada Y, Murata Y, Shimazaki KI. Blue light and CO 2 signals converge to regulate light-induced stomatal opening. Nat Commun 2017; 8:1284. [PMID: 29101334 PMCID: PMC5670223 DOI: 10.1038/s41467-017-01237-5] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 08/31/2017] [Indexed: 01/08/2023] Open
Abstract
Stomata regulate gas exchange between plants and atmosphere by integrating opening and closing signals. Stomata open in response to low CO2 concentrations to maximize photosynthesis in the light; however, the mechanisms that coordinate photosynthesis and stomatal conductance have yet to be identified. Here we identify and characterize CBC1/2 (CONVERGENCE OF BLUE LIGHT (BL) AND CO2 1/2), two kinases that link BL, a major component of photosynthetically active radiation (PAR), and the signals from low concentrations of CO2 in guard cells. CBC1/CBC2 redundantly stimulate stomatal opening by inhibition of S-type anion channels in response to both BL and low concentrations of CO2. CBC1/CBC2 function in the signaling pathways of phototropins and HT1 (HIGH LEAF TEMPERATURE 1). CBC1/CBC2 interact with and are phosphorylated by HT1. We propose that CBCs regulate stomatal aperture by integrating signals from BL and CO2 and act as the convergence site for signals from BL and low CO2. Stomata open in response to low CO2 conditions in the light to maximise photosynthesis. Here, Hiyama et al. identify two kinases that promote stomatal opening by inhibiting S-type anion channels downstream of phototropin and HT1 thereby acting as a convergence point for blue light and CO2 signaling.
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Affiliation(s)
- Asami Hiyama
- Department of Biology, Faculty of Science, Kyushu University, 744 Motooka, Fukuoka, 819-0395, Japan
| | - Atsushi Takemiya
- Department of Biology, Faculty of Science, Kyushu University, 744 Motooka, Fukuoka, 819-0395, Japan.,Graduate School of Sciences and Technology for Innovation, 1677-1 Yoshida, Yamaguchi, 753-8512, Japan
| | - Shintaro Munemasa
- Graduate School of Environmental and Life Science, Okayama University, Okayama, 700-8530, Japan
| | - Eiji Okuma
- Graduate School of Environmental and Life Science, Okayama University, Okayama, 700-8530, Japan
| | - Naoyuki Sugiyama
- Department of Molecular & Cellular BioAnalysis, Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Yasuomi Tada
- Center for Gene Research, Nagoya University, Chikusa, Nagoya, 464-8602, Japan
| | - Yoshiyuki Murata
- Graduate School of Environmental and Life Science, Okayama University, Okayama, 700-8530, Japan
| | - Ken-Ichiro Shimazaki
- Department of Biology, Faculty of Science, Kyushu University, 744 Motooka, Fukuoka, 819-0395, Japan.
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186
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Noctor G, Mhamdi A. Climate Change, CO 2, and Defense: The Metabolic, Redox, and Signaling Perspectives. TRENDS IN PLANT SCIENCE 2017; 22:857-870. [PMID: 28811163 DOI: 10.1016/j.tplants.2017.07.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 07/04/2017] [Accepted: 07/13/2017] [Indexed: 05/20/2023]
Abstract
Ongoing human-induced changes in the composition of the atmosphere continue to stimulate interest in the effects of high CO2 on plants, but its potential impact on inducible plant defense pathways remains poorly defined. Recently, several studies have reported that growth at elevated CO2 is sufficient to induce defenses such as the salicylic acid pathway, thereby increasing plant resistance to pathogens. These reports contrast with evidence that defense pathways can be promoted by photorespiration, which is inhibited at high CO2. Here, we review signaling, metabolic, and redox processes modulated by CO2 levels and discuss issues to be resolved in elucidating the relationships between primary metabolism, inducible defense, and biotic stress resistance.
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Affiliation(s)
- Graham Noctor
- Institute of Plant Sciences Paris-Saclay (IPS2), UMR 9213/UMR1403, Université Paris-Sud, CNRS, INRA, Université d'Evry, Université Paris-Diderot, Sorbonne Paris-Cité, Bâtiment 630, 91405 Orsay, France.
| | - Amna Mhamdi
- Institute of Plant Sciences Paris-Saclay (IPS2), UMR 9213/UMR1403, Université Paris-Sud, CNRS, INRA, Université d'Evry, Université Paris-Diderot, Sorbonne Paris-Cité, Bâtiment 630, 91405 Orsay, France; Current address: Department of Plant Systems Biology, VIB, and Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
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187
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Müller HM, Schäfer N, Bauer H, Geiger D, Lautner S, Fromm J, Riederer M, Bueno A, Nussbaumer T, Mayer K, Alquraishi SA, Alfarhan AH, Neher E, Al-Rasheid KAS, Ache P, Hedrich R. The desert plant Phoenix dactylifera closes stomata via nitrate-regulated SLAC1 anion channel. THE NEW PHYTOLOGIST 2017; 216:150-162. [PMID: 28670699 DOI: 10.1111/nph.14672] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 05/17/2017] [Indexed: 05/22/2023]
Abstract
Date palm Phoenix dactylifera is a desert crop well adapted to survive and produce fruits under extreme drought and heat. How are palms under such harsh environmental conditions able to limit transpirational water loss? Here, we analysed the cuticular waxes, stomata structure and function, and molecular biology of guard cells from P. dactylifera. To understand the stomatal response to the water stress phytohormone of the desert plant, we cloned the major elements necessary for guard cell fast abscisic acid (ABA) signalling and reconstituted this ABA signalosome in Xenopus oocytes. The PhoenixSLAC1-type anion channel is regulated by ABA kinase PdOST1. Energy-dispersive X-ray analysis (EDXA) demonstrated that date palm guard cells release chloride during stomatal closure. However, in Cl- medium, PdOST1 did not activate the desert plant anion channel PdSLAC1 per se. Only when nitrate was present at the extracellular face of the anion channel did the OST1-gated PdSLAC1 open, thus enabling chloride release. In the presence of nitrate, ABA enhanced and accelerated stomatal closure. Our findings indicate that, in date palm, the guard cell osmotic motor driving stomatal closure uses nitrate as the signal to open the major anion channel SLAC1. This initiates guard cell depolarization and the release of anions together with potassium.
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Affiliation(s)
- Heike M Müller
- Biocenter, Institute for Molecular Plant Physiology and Biophysics, Julius-von-Sachs-Institute, University of Wuerzburg, 97082, Wuerzburg, Germany
| | - Nadine Schäfer
- Biocenter, Institute for Molecular Plant Physiology and Biophysics, Julius-von-Sachs-Institute, University of Wuerzburg, 97082, Wuerzburg, Germany
| | - Hubert Bauer
- Biocenter, Institute for Molecular Plant Physiology and Biophysics, Julius-von-Sachs-Institute, University of Wuerzburg, 97082, Wuerzburg, Germany
| | - Dietmar Geiger
- Biocenter, Institute for Molecular Plant Physiology and Biophysics, Julius-von-Sachs-Institute, University of Wuerzburg, 97082, Wuerzburg, Germany
| | - Silke Lautner
- Department of Wood Science, University Hamburg, 21031, Hamburg, Germany
| | - Jörg Fromm
- Department of Wood Science, University Hamburg, 21031, Hamburg, Germany
| | - Markus Riederer
- Biocenter, Institute for Ecophysiology and Vegetation Ecology, Julius-von-Sachs-Institute, University of Wuerzburg, 97082, Wuerzburg, Germany
| | - Amauri Bueno
- Biocenter, Institute for Ecophysiology and Vegetation Ecology, Julius-von-Sachs-Institute, University of Wuerzburg, 97082, Wuerzburg, Germany
| | - Thomas Nussbaumer
- Plant Genome and Systems Biology, Helmholtz Center Munich, D-85764, Neuherberg, Germany
| | - Klaus Mayer
- Plant Genome and Systems Biology, Helmholtz Center Munich, D-85764, Neuherberg, Germany
| | | | - Ahmed H Alfarhan
- College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Erwin Neher
- Department for Membrane Biophysics, Max Planck Institute for Biophysical Chemistry, D-37077, Goettingen, Germany
| | - Khaled A S Al-Rasheid
- Biocenter, Institute for Molecular Plant Physiology and Biophysics, Julius-von-Sachs-Institute, University of Wuerzburg, 97082, Wuerzburg, Germany
- College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Peter Ache
- Biocenter, Institute for Molecular Plant Physiology and Biophysics, Julius-von-Sachs-Institute, University of Wuerzburg, 97082, Wuerzburg, Germany
| | - Rainer Hedrich
- Biocenter, Institute for Molecular Plant Physiology and Biophysics, Julius-von-Sachs-Institute, University of Wuerzburg, 97082, Wuerzburg, Germany
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188
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Hedrich R, Geiger D. Biology of SLAC1-type anion channels - from nutrient uptake to stomatal closure. THE NEW PHYTOLOGIST 2017; 216:46-61. [PMID: 28722226 DOI: 10.1111/nph.14685] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Accepted: 04/25/2017] [Indexed: 05/22/2023]
Abstract
Contents 46 I. 46 II. 47 III. 50 IV. 53 V. 56 VI. 57 58 58 References 58 SUMMARY: Stomatal guard cells control leaf CO2 intake and concomitant water loss to the atmosphere. When photosynthetic CO2 assimilation is limited and the ratio of CO2 intake to transpiration becomes suboptimal, guard cells, sensing the rise in CO2 concentration in the substomatal cavity, deflate and the stomata close. Screens for mutants that do not close in response to experimentally imposed high CO2 atmospheres identified the guard cell-expressed Slowly activating anion channel, SLAC1, as the key player in the regulation of stomatal closure. SLAC1 evolved, though, before the emergence of guard cells. In Arabidopsis, SLAC1 is the founder member of a family of anion channels, which comprises four homologues. SLAC1 and SLAH3 mediate chloride and nitrate transport in guard cells, while SLAH1, SLAH2 and SLAH3 are engaged in root nitrate and chloride acquisition, and anion translocation to the shoot. The signal transduction pathways involved in CO2 , water stress and nutrient-sensing activate SLAC/SLAH via distinct protein kinase/phosphatase pairs. In this review, we discuss the role that SLAC/SLAH channels play in guard cell closure, on the one hand, and in the root-shoot continuum on the other, along with the molecular basis of the channels' anion selectivity and gating.
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Affiliation(s)
- Rainer Hedrich
- Institute for Molecular Plant Physiology and Biophysics, Julius-von-Sachs-Institute, Biocenter, University of Wuerzburg, Wuerzburg, 97082, Germany
| | - Dietmar Geiger
- Institute for Molecular Plant Physiology and Biophysics, Julius-von-Sachs-Institute, Biocenter, University of Wuerzburg, Wuerzburg, 97082, Germany
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189
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Basu S, Rabara R. Abscisic acid — An enigma in the abiotic stress tolerance of crop plants. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.plgene.2017.04.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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190
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Isner JC, Xu Z, Costa JM, Monnet F, Batstone T, Ou X, Deeks MJ, Genty B, Jiang K, Hetherington AM. Actin filament reorganisation controlled by the SCAR/WAVE complex mediates stomatal response to darkness. THE NEW PHYTOLOGIST 2017; 215:1059-1067. [PMID: 28636198 PMCID: PMC5519931 DOI: 10.1111/nph.14655] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Accepted: 04/25/2017] [Indexed: 05/20/2023]
Abstract
Stomata respond to darkness by closing to prevent excessive water loss during the night. Although the reorganisation of actin filaments during stomatal closure is documented, the underlying mechanisms responsible for dark-induced cytoskeletal arrangement remain largely unknown. We used genetic, physiological and cell biological approaches to show that reorganisation of the actin cytoskeleton is required for dark-induced stomatal closure. The opal5 mutant does not close in response to darkness but exhibits wild-type (WT) behaviour when exposed to abscisic acid (ABA) or CaCl2 . The mutation was mapped to At5g18410, encoding the PIR/SRA1/KLK subunit of the ArabidopsisSCAR/WAVE complex. Stomata of an independent allele of the PIR gene (Atpir-1) showed reduced sensitivity to darkness and F1 progenies of the cross between opal5 and Atpir-1 displayed distorted leaf trichomes, suggesting that the two mutants are allelic. Darkness induced changes in the extent of actin filament bundling in WT. These were abolished in opal5. Disruption of filamentous actin using latrunculin B or cytochalasin D restored wild-type stomatal sensitivity to darkness in opal5. Our findings suggest that the stomatal response to darkness is mediated by reorganisation of guard cell actin filaments, a process that is finely tuned by the conserved SCAR/WAVE-Arp2/3 actin regulatory module.
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Affiliation(s)
- Jean-Charles Isner
- School of Biological Sciences, University of Bristol, Life Sciences Building, 24 Tyndall Avenue, Bristol, BS8 1TQ, UK
| | - Zaoxu Xu
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang Province, 310058, China
| | - Joaquim Miguel Costa
- Commissariat à l'Energie Atomique et aux Energies Alternatives, Centre National de la Recherche Scientifique UMR 7265, Université Aix-Marseille, Biologie Végétale et Microbiologie Environnementales, Saint-Paul-lez-Durance, 13108, France
| | - Fabien Monnet
- Commissariat à l'Energie Atomique et aux Energies Alternatives, Centre National de la Recherche Scientifique UMR 7265, Université Aix-Marseille, Biologie Végétale et Microbiologie Environnementales, Saint-Paul-lez-Durance, 13108, France
| | - Thomas Batstone
- School of Biological Sciences, University of Bristol, Life Sciences Building, 24 Tyndall Avenue, Bristol, BS8 1TQ, UK
| | - Xiaobin Ou
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang Province, 310058, China
| | - Michael J Deeks
- Department of Biosciences, University of Exeter, Exeter, EX4 4QD, UK
| | - Bernard Genty
- Commissariat à l'Energie Atomique et aux Energies Alternatives, Centre National de la Recherche Scientifique UMR 7265, Université Aix-Marseille, Biologie Végétale et Microbiologie Environnementales, Saint-Paul-lez-Durance, 13108, France
| | - Kun Jiang
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang Province, 310058, China
| | - Alistair M Hetherington
- School of Biological Sciences, University of Bristol, Life Sciences Building, 24 Tyndall Avenue, Bristol, BS8 1TQ, UK
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191
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Corratgé-Faillie C, Ronzier E, Sanchez F, Prado K, Kim JH, Lanciano S, Leonhardt N, Lacombe B, Xiong TC. The Arabidopsis guard cell outward potassium channel GORK is regulated by CPK33. FEBS Lett 2017; 591:1982-1992. [PMID: 28543075 DOI: 10.1002/1873-3468.12687] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 05/10/2017] [Accepted: 05/12/2017] [Indexed: 11/10/2022]
Abstract
A complex signaling network involving voltage-gated potassium channels from the Shaker family contributes to the regulation of stomatal aperture. Several kinases and phosphatases have been shown to be crucial for ABA-dependent regulation of the ion transporters. To date, the Ca2+ -dependent regulation of Shaker channels by Ca2+ -dependent protein kinases (CPKs) is still elusive. A functional screen in Xenopus oocytes was launched to identify such CPKs able to regulate the three main guard cell Shaker channels KAT1, KAT2, and GORK. Seven guard cell CPKs were tested and multiple CPK/Shaker couples were identified. Further work on CPK33 indicates that GORK activity is enhanced by CPK33 and unaffected by a nonfunctional CPK33 (CPK33-K102M). Furthermore, Ca2+ -induced stomatal closure is impaired in two cpk33 mutant plants.
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Affiliation(s)
- Claire Corratgé-Faillie
- Biochimie et Physiologie Moléculaire des Plantes, UMR CNRS/INRA/Montpellier SupAgro/UM, Montpellier, France
| | - Elsa Ronzier
- Biochimie et Physiologie Moléculaire des Plantes, UMR CNRS/INRA/Montpellier SupAgro/UM, Montpellier, France
| | - Frédéric Sanchez
- Biochimie et Physiologie Moléculaire des Plantes, UMR CNRS/INRA/Montpellier SupAgro/UM, Montpellier, France
| | - Karine Prado
- Biochimie et Physiologie Moléculaire des Plantes, UMR CNRS/INRA/Montpellier SupAgro/UM, Montpellier, France
| | - Jeong-Hyeon Kim
- Biochimie et Physiologie Moléculaire des Plantes, UMR CNRS/INRA/Montpellier SupAgro/UM, Montpellier, France
| | - Sophie Lanciano
- Biochimie et Physiologie Moléculaire des Plantes, UMR CNRS/INRA/Montpellier SupAgro/UM, Montpellier, France
| | - Nathalie Leonhardt
- UMR7265, Laboratoire de Biologie du Développement des Plantes, Service de Biologie Végétale et de Microbiologie Environnementales, Institut de Biologie Environnementale et Biotechnologie, CNRS-CEA-Université Aix-Marseille, Saint-Paul-lez-Durance, France
| | - Benoît Lacombe
- Biochimie et Physiologie Moléculaire des Plantes, UMR CNRS/INRA/Montpellier SupAgro/UM, Montpellier, France
| | - Tou Cheu Xiong
- Biochimie et Physiologie Moléculaire des Plantes, UMR CNRS/INRA/Montpellier SupAgro/UM, Montpellier, France
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192
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Wege S, Gilliham M, Henderson SW. Chloride: not simply a 'cheap osmoticum', but a beneficial plant macronutrient. JOURNAL OF EXPERIMENTAL BOTANY 2017; 68:3057-3069. [PMID: 28379459 DOI: 10.1093/jxb/erx050] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
At macronutrient levels, chloride has positive effects on plant growth, which are distinct from its function in photosynthesis..
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Affiliation(s)
- Stefanie Wege
- Australian Research Council Centre of Excellence in Plant Energy Biology & The University of Adelaide, School of Agriculture, Food and Wine, Waite Research Precinct, PMB1, Glen Osmond, South Australia 5064, Australia
| | - Matthew Gilliham
- Australian Research Council Centre of Excellence in Plant Energy Biology & The University of Adelaide, School of Agriculture, Food and Wine, Waite Research Precinct, PMB1, Glen Osmond, South Australia 5064, Australia
| | - Sam W Henderson
- Australian Research Council Centre of Excellence in Plant Energy Biology & The University of Adelaide, School of Agriculture, Food and Wine, Waite Research Precinct, PMB1, Glen Osmond, South Australia 5064, Australia
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193
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194
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Yao FY, Qi GN, Ren HM, Zhang A, Hussain J, Wang YF. S-type anion channel SLAC1's homologues inhibit inward potassium channels AKT2 and KAT2 in Arabidopsis. Sci Bull (Beijing) 2017; 62:464-466. [PMID: 36659254 DOI: 10.1016/j.scib.2017.03.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Fen-Yong Yao
- National Key Laboratory of Plant Molecular Genetics, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China; University of Chinese Academy of Sciences, Shanghai 200032, China
| | - Guo-Ning Qi
- National Key Laboratory of Plant Molecular Genetics, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Hui-Min Ren
- National Key Laboratory of Plant Molecular Genetics, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - An Zhang
- National Key Laboratory of Plant Molecular Genetics, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China; University of Chinese Academy of Sciences, Shanghai 200032, China
| | - Jamshaid Hussain
- National Key Laboratory of Plant Molecular Genetics, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China; Biotechnology Program, Department of Environmental Sciences, COMSATS Institute of Information Technology, Abbottabad 22060, Pakistan
| | - Yong-Fei Wang
- National Key Laboratory of Plant Molecular Genetics, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China.
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195
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Zhang H, Zhao FG, Tang RJ, Yu Y, Song J, Wang Y, Li L, Luan S. Two tonoplast MATE proteins function as turgor-regulating chloride channels in Arabidopsis. Proc Natl Acad Sci U S A 2017; 114:E2036-E2045. [PMID: 28202726 PMCID: PMC5347570 DOI: 10.1073/pnas.1616203114] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The central vacuole in a plant cell occupies the majority of the cellular volume and plays a key role in turgor regulation. The vacuolar membrane (tonoplast) contains a large number of transporters that mediate fluxes of solutes and water, thereby adjusting cell turgor in response to developmental and environmental signals. We report that two tonoplast Detoxification efflux carrier (DTX)/Multidrug and Toxic Compound Extrusion (MATE) transporters, DTX33 and DTX35, function as chloride channels essential for turgor regulation in Arabidopsis Ectopic expression of each transporter in Nicotiana benthamiana mesophyll cells elicited a large voltage-dependent inward chloride current across the tonoplast, showing that DTX33 and DTX35 each constitute a functional channel. Both channels are highly expressed in Arabidopsis tissues, including root hairs and guard cells that experience rapid turgor changes during root-hair elongation and stomatal movements. Disruption of these two genes, either in single or double mutants, resulted in shorter root hairs and smaller stomatal aperture, with double mutants showing more severe defects, suggesting that these two channels function additively to facilitate anion influx into the vacuole during cell expansion. In addition, dtx35 single mutant showed lower fertility as a result of a defect in pollen-tube growth. Indeed, patch-clamp recording of isolated vacuoles indicated that the inward chloride channel activity across the tonoplast was impaired in the double mutant. Because MATE proteins are widely known transporters of organic compounds, finding MATE members as chloride channels expands the functional definition of this large family of transporters.
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Affiliation(s)
- Haiwen Zhang
- Institute of Plant Molecular Biology, State Key Laboratory of Pharmaceutical Technology, School of Life Sciences, Nanjing University, Nanjing 210093, China
- College of Life Sciences, Capital Normal University, Beijing 100048, China
- Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Beijing Agro-Biotechnology Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Fu-Geng Zhao
- Institute of Plant Molecular Biology, State Key Laboratory of Pharmaceutical Technology, School of Life Sciences, Nanjing University, Nanjing 210093, China;
| | - Ren-Jie Tang
- Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720
| | - Yuexuan Yu
- College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Jiali Song
- College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Yuan Wang
- Institute of Plant Molecular Biology, State Key Laboratory of Pharmaceutical Technology, School of Life Sciences, Nanjing University, Nanjing 210093, China
| | - Legong Li
- College of Life Sciences, Capital Normal University, Beijing 100048, China;
| | - Sheng Luan
- Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720;
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196
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Li B, Tester M, Gilliham M. Chloride on the Move. TRENDS IN PLANT SCIENCE 2017; 22:236-248. [PMID: 28081935 DOI: 10.1016/j.tplants.2016.12.004] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 11/21/2016] [Accepted: 12/11/2016] [Indexed: 05/20/2023]
Abstract
Chloride (Cl-) is an essential plant nutrient but under saline conditions it can accumulate to toxic levels in leaves; limiting this accumulation improves the salt tolerance of some crops. The rate-limiting step for this process - the transfer of Cl- from root symplast to xylem apoplast, which can antagonize delivery of the macronutrient nitrate (NO3-) to shoots - is regulated by abscisic acid (ABA) and is multigenic. Until recently the molecular mechanisms underpinning this salt-tolerance trait were poorly defined. We discuss here how recent advances highlight the role of newly identified transport proteins, some that directly transfer Cl- into the xylem, and others that act on endomembranes in 'gatekeeper' cell types in the root stele to control root-to-shoot delivery of Cl-.
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Affiliation(s)
- Bo Li
- King Abdullah University of Science and Technology (KAUST), Division of Biological and Environmental Sciences and Engineering, Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Mark Tester
- King Abdullah University of Science and Technology (KAUST), Division of Biological and Environmental Sciences and Engineering, Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Matthew Gilliham
- Plant Transport and Signalling Group, Australian Research Council (ARC) Centre of Excellence in Plant Energy Biology, School of Agriculture, Food and Wine, Waite Research Institute, University of Adelaide, Glen Osmond, SA 5064, Australia.
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197
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Zhang J, Wang J, Jiang W, Liu J, Yang S, Gai J, Li Y. Identification and Analysis of NaHCO 3 Stress Responsive Genes in Wild Soybean ( Glycine soja) Roots by RNA-seq. FRONTIERS IN PLANT SCIENCE 2016; 7:1842. [PMID: 28018382 PMCID: PMC5161042 DOI: 10.3389/fpls.2016.01842] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 11/22/2016] [Indexed: 05/25/2023]
Abstract
Soil alkalinity is a major abiotic constraint to crop productivity and quality. Wild soybean (Glycine soja) is considered to be more stress-tolerant than cultivated soybean (G. max), and has considerable genetic variation for increasing alkalinity tolerance of soybean. In this study, we analyzed the transcriptome profile in the roots of an alkalinity tolerant wild soybean variety N24852 at 12 and 24 h after 90 mM NaHCO3 stress by RNA-sequencing. Compared with the controls, a total of 449 differentially expressed genes (DEGs) were identified, including 95 and 140 up-regulated genes, and 108 and 135 down-regulated genes at 12 and 24 h after NaHCO3 treatment, respectively. Quantitative RT-PCR analysis of 14 DEGs showed a high consistency with their expression profiles by RNA-sequencing. Gene Ontology (GO) terms related to transcription factors and transporters were significantly enriched in the up-regulated genes at 12 and 24 h after NaHCO3 stress, respectively. Nuclear factor Y subunit A transcription factors were enriched at 12 h after NaHCO3 stress, and high percentages of basic helix-loop-helix, ethylene-responsive factor, Trihelix, and zinc finger (C2H2, C3H) transcription factors were found at both 12 and 24 h after NaHCO3 stress. Genes related to ion transporters such as ABC transporter, aluminum activated malate transporter, glutamate receptor, nitrate transporter/proton dependent oligopeptide family, and S-type anion channel were enriched in up-regulated DEGs at 24 h after NaHCO3 treatment, implying their roles in maintaining ion homeostasis in soybean roots under alkalinity. Kyoto Encyclopedia of Genes and Genomes pathway enrichment analysis showed "phenylpropanoid biosynthesis" and "phenylalanine metabolism" pathways might participate in soybean response to alkalinity. This study provides a foundation to further investigate the functions of NaHCO3 stress-responsive genes and the molecular basis of soybean tolerance to alkalinity.
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198
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Jakobson L, Vaahtera L, Tõldsepp K, Nuhkat M, Wang C, Wang YS, Hõrak H, Valk E, Pechter P, Sindarovska Y, Tang J, Xiao C, Xu Y, Gerst Talas U, García-Sosa AT, Kangasjärvi S, Maran U, Remm M, Roelfsema MRG, Hu H, Kangasjärvi J, Loog M, Schroeder JI, Kollist H, Brosché M. Natural Variation in Arabidopsis Cvi-0 Accession Reveals an Important Role of MPK12 in Guard Cell CO2 Signaling. PLoS Biol 2016; 14:e2000322. [PMID: 27923039 PMCID: PMC5147794 DOI: 10.1371/journal.pbio.2000322] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 11/03/2016] [Indexed: 12/20/2022] Open
Abstract
Plant gas exchange is regulated by guard cells that form stomatal pores. Stomatal adjustments are crucial for plant survival; they regulate uptake of CO2 for photosynthesis, loss of water, and entrance of air pollutants such as ozone. We mapped ozone hypersensitivity, more open stomata, and stomatal CO2-insensitivity phenotypes of the Arabidopsis thaliana accession Cvi-0 to a single amino acid substitution in MITOGEN-ACTIVATED PROTEIN (MAP) KINASE 12 (MPK12). In parallel, we showed that stomatal CO2-insensitivity phenotypes of a mutant cis (CO2-insensitive) were caused by a deletion of MPK12. Lack of MPK12 impaired bicarbonate-induced activation of S-type anion channels. We demonstrated that MPK12 interacted with the protein kinase HIGH LEAF TEMPERATURE 1 (HT1)-a central node in guard cell CO2 signaling-and that MPK12 functions as an inhibitor of HT1. These data provide a new function for plant MPKs as protein kinase inhibitors and suggest a mechanism through which guard cell CO2 signaling controls plant water management.
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Affiliation(s)
- Liina Jakobson
- Institute of Technology, University of Tartu, Tartu, Estonia
| | - Lauri Vaahtera
- Division of Plant Biology, Department of Biosciences, Viikki Plant Science Centre, University of Helsinki, Helsinki, Finland
| | - Kadri Tõldsepp
- Institute of Technology, University of Tartu, Tartu, Estonia
| | - Maris Nuhkat
- Institute of Technology, University of Tartu, Tartu, Estonia
| | - Cun Wang
- Division of Biological Sciences, Cell and Developmental Biology Section, University of California, San Diego, La Jolla, California, United States of America
| | - Yuh-Shuh Wang
- Institute of Technology, University of Tartu, Tartu, Estonia
| | - Hanna Hõrak
- Institute of Technology, University of Tartu, Tartu, Estonia
| | - Ervin Valk
- Institute of Technology, University of Tartu, Tartu, Estonia
| | - Priit Pechter
- Institute of Technology, University of Tartu, Tartu, Estonia
| | | | - Jing Tang
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Chuanlei Xiao
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Yang Xu
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Ulvi Gerst Talas
- Institute of Molecular and Cell Biology, University of Tartu, Tartu, Estonia
| | | | - Saijaliisa Kangasjärvi
- Molecular Plant Biology, Department of Biochemistry, University of Turku, Turku, Finland
| | - Uko Maran
- Institute of Chemistry, University of Tartu, Tartu, Estonia
| | - Maido Remm
- Institute of Molecular and Cell Biology, University of Tartu, Tartu, Estonia
| | - M. Rob G. Roelfsema
- Molecular Plant Physiology and Biophysics, Julius-von-Sachs Institute for Biosciences, Biocenter, University of Würzburg, Würzburg, Germany
| | - Honghong Hu
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Jaakko Kangasjärvi
- Division of Plant Biology, Department of Biosciences, Viikki Plant Science Centre, University of Helsinki, Helsinki, Finland
- Distinguished Scientist Fellowship Program, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Mart Loog
- Institute of Technology, University of Tartu, Tartu, Estonia
| | - Julian I. Schroeder
- Division of Biological Sciences, Cell and Developmental Biology Section, University of California, San Diego, La Jolla, California, United States of America
| | - Hannes Kollist
- Institute of Technology, University of Tartu, Tartu, Estonia
| | - Mikael Brosché
- Institute of Technology, University of Tartu, Tartu, Estonia
- Division of Plant Biology, Department of Biosciences, Viikki Plant Science Centre, University of Helsinki, Helsinki, Finland
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199
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Qiu J, Henderson SW, Tester M, Roy SJ, Gilliham M. SLAH1, a homologue of the slow type anion channel SLAC1, modulates shoot Cl- accumulation and salt tolerance in Arabidopsis thaliana. JOURNAL OF EXPERIMENTAL BOTANY 2016; 67:4495-505. [PMID: 27340232 PMCID: PMC4973733 DOI: 10.1093/jxb/erw237] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Salinity tolerance is correlated with shoot chloride (Cl(-)) exclusion in multiple crops, but the molecular mechanisms of long-distance Cl(-) transport are poorly defined. Here, we characterize the in planta role of AtSLAH1 (a homologue of the slow type anion channel-associated 1 (SLAC1)). This protein, localized to the plasma membrane of root stelar cells, has its expression reduced by salt or ABA, which are key predictions for a protein involved with loading Cl(-) into the root xylem. Artificial microRNA knockdown mutants of AtSLAH1 had significantly reduced shoot Cl(-) accumulation when grown under low Cl(-), whereas shoot Cl(-) increased and the shoot nitrate/chloride ratio decreased following AtSLAH1 constitutive or stelar-specific overexpression when grown in high Cl(-) In both sets of overexpression lines a significant reduction in shoot biomass over the null segregants was observed under high Cl(-) supply, but not low Cl(-) supply. Further in planta data showed AtSLAH3 overexpression increased the shoot nitrate/chloride ratio, consistent with AtSLAH3 favouring nitrate transport. Heterologous expression of AtSLAH1 in Xenopus laevis oocytes led to no detectible transport, suggesting the need for post-translational modifications for AtSLAH1 to be active. Our in planta data are consistent with AtSLAH1 having a role in controlling root-to-shoot Cl(-) transport.
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Affiliation(s)
- Jiaen Qiu
- School of Agriculture, Food, and Wine, University of Adelaide, PMB1, Glen Osmond, SA 5064, Australia Australian Centre for Plant Functional Genomics, PMB1, Glen Osmond, SA 5064, Australia ARC Centre of Excellence in Plant Energy Biology, PMB1, Glen Osmond, SA 5064, Australia
| | - Sam W Henderson
- School of Agriculture, Food, and Wine, University of Adelaide, PMB1, Glen Osmond, SA 5064, Australia ARC Centre of Excellence in Plant Energy Biology, PMB1, Glen Osmond, SA 5064, Australia
| | - Mark Tester
- Centre for Desert Agriculture, King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Stuart J Roy
- School of Agriculture, Food, and Wine, University of Adelaide, PMB1, Glen Osmond, SA 5064, Australia Australian Centre for Plant Functional Genomics, PMB1, Glen Osmond, SA 5064, Australia
| | - Mathew Gilliham
- School of Agriculture, Food, and Wine, University of Adelaide, PMB1, Glen Osmond, SA 5064, Australia ARC Centre of Excellence in Plant Energy Biology, PMB1, Glen Osmond, SA 5064, Australia
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200
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Roelfsema MRG, Hedrich R. Do stomata of evolutionary distant species differ in sensitivity to environmental signals? THE NEW PHYTOLOGIST 2016; 211:767-770. [PMID: 27397524 DOI: 10.1111/nph.14074] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Affiliation(s)
- M Rob G Roelfsema
- Molecular Plant Physiology and Biophysics, Julius-von-Sachs Institute for Biosciences, Biocenter, University of Würzburg, Julius-von-Sachs-Platz 2, Würzburg, D-97082, Germany
| | - Rainer Hedrich
- Molecular Plant Physiology and Biophysics, Julius-von-Sachs Institute for Biosciences, Biocenter, University of Würzburg, Julius-von-Sachs-Platz 2, Würzburg, D-97082, Germany
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