1
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Qu M, Huang X, Shabala L, Fuglsang AT, Yu M, Shabala S. Understanding Ameliorating Effects of Boron on Adaptation to Salt Stress in Arabidopsis. PLANTS (BASEL, SWITZERLAND) 2024; 13:1960. [PMID: 39065487 PMCID: PMC11280838 DOI: 10.3390/plants13141960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2024] [Revised: 07/08/2024] [Accepted: 07/16/2024] [Indexed: 07/28/2024]
Abstract
When faced with salinity stress, plants typically exhibit a slowdown in their growth patterns. Boron (B) is an essential micronutrient for plants that are known to play a critical role in controlling cell wall properties. In this study, we used the model plant Arabidopsis thaliana Col-0 and relevant mutants to explore how the difference in B availability may modulate plant responses to salt stress. There was a visible root growth suppression of Col-0 with the increased salt levels in the absence of B while this growth reduction was remarkably alleviated by B supply. Pharmacological experiments revealed that orthovanadate (a known blocker of H+-ATPase) inhibited root growth at no B condition, but had no effect in the presence of 30 μM B. Salinity stress resulted in a massive K+ loss from mature zones of A. thaliana roots; this efflux was attenuated in the presence of B. Supplemental B also increased the magnitude of net H+ pumping by plant roots. Boron availability was also essential for root halotropism. Interestingly, the aha2Δ57 mutant with active H+-ATPase protein exhibited the same halotropism response as Col-0 while the aha2-4 mutant had a stronger halotropism response (larger bending angle) compared with that of Col-0. Overall, the ameliorative effect of B on the A. thaliana growth under salt stress is based on the H+-ATPase stimulation and a subsequent K+ retention, involving auxin- and ROS-pathways.
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Affiliation(s)
- Mei Qu
- International Research Center for Environmental Membrane Biology, Foshan University, Foshan 528000, China; (M.Q.); (X.H.); (L.S.)
- Tasmanian Institute of Agriculture, University of Tasmania, Hobart 7005, Australia
- Department of Plant and Environmental Sciences, University of Copenhagen, 1871 Copenhagen, Denmark;
| | - Xin Huang
- International Research Center for Environmental Membrane Biology, Foshan University, Foshan 528000, China; (M.Q.); (X.H.); (L.S.)
| | - Lana Shabala
- International Research Center for Environmental Membrane Biology, Foshan University, Foshan 528000, China; (M.Q.); (X.H.); (L.S.)
- Tasmanian Institute of Agriculture, University of Tasmania, Hobart 7005, Australia
- School of Biological Sciences, University of Western Australia, Perth 6009, Australia
| | - Anja Thoe Fuglsang
- Department of Plant and Environmental Sciences, University of Copenhagen, 1871 Copenhagen, Denmark;
| | - Min Yu
- International Research Center for Environmental Membrane Biology, Foshan University, Foshan 528000, China; (M.Q.); (X.H.); (L.S.)
| | - Sergey Shabala
- International Research Center for Environmental Membrane Biology, Foshan University, Foshan 528000, China; (M.Q.); (X.H.); (L.S.)
- Tasmanian Institute of Agriculture, University of Tasmania, Hobart 7005, Australia
- School of Biological Sciences, University of Western Australia, Perth 6009, Australia
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2
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Zheng L, Hu Y, Yang T, Wang Z, Wang D, Jia L, Xie Y, Luo L, Qi W, Lv Y, Beeckman T, Xuan W, Han Y. A root cap-localized NAC transcription factor controls root halotropic response to salt stress in Arabidopsis. Nat Commun 2024; 15:2061. [PMID: 38448433 PMCID: PMC10917740 DOI: 10.1038/s41467-024-46482-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 02/28/2024] [Indexed: 03/08/2024] Open
Abstract
Plants are capable of altering root growth direction to curtail exposure to a saline environment (termed halotropism). The root cap that surrounds root tip meristematic stem cells plays crucial roles in perceiving and responding to environmental stimuli. However, how the root cap mediates root halotropism remains undetermined. Here, we identified a root cap-localized NAC transcription factor, SOMBRERO (SMB), that is required for root halotropism. Its effect on root halotropism is attributable to the establishment of asymmetric auxin distribution in the lateral root cap (LRC) rather than to the alteration of cellular sodium equilibrium or amyloplast statoliths. Furthermore, SMB is essential for basal expression of the auxin influx carrier gene AUX1 in LRC and for auxin redistribution in a spatiotemporally-regulated manner, thereby leading to directional bending of roots away from higher salinity. Our findings uncover an SMB-AUX1-auxin module linking the role of the root cap to the activation of root halotropism.
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Affiliation(s)
- Lulu Zheng
- Sanya Institute of Nanjing Agricultural University, State Key Laboratory of Crop Genetics & Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, Ghent, B-9052, Belgium
- VIB-UGent Center for Plant Systems Biology, Technologiepark 71, Ghent, B-9052, Belgium
| | - Yongfeng Hu
- Key Laboratory of Three Gorges Regional Plant Genetics and Germplasm Enhancement, Biotechnology Research Center, China Three Gorges University, Yichang, China
| | - Tianzhao Yang
- National Engineering Laboratory of Crop Stress Resistence Breeding, School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China
| | - Zhen Wang
- Sanya Institute of Nanjing Agricultural University, State Key Laboratory of Crop Genetics & Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China
| | - Daoyuan Wang
- Sanya Institute of Nanjing Agricultural University, State Key Laboratory of Crop Genetics & Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China
| | - Letian Jia
- Sanya Institute of Nanjing Agricultural University, State Key Laboratory of Crop Genetics & Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China
| | - Yuanming Xie
- Sanya Institute of Nanjing Agricultural University, State Key Laboratory of Crop Genetics & Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China
| | - Long Luo
- National Engineering Laboratory of Crop Stress Resistence Breeding, School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China
| | - Weicong Qi
- Excellence and Innovation Center, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Yuanda Lv
- Excellence and Innovation Center, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Tom Beeckman
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, Ghent, B-9052, Belgium
- VIB-UGent Center for Plant Systems Biology, Technologiepark 71, Ghent, B-9052, Belgium
| | - Wei Xuan
- Sanya Institute of Nanjing Agricultural University, State Key Laboratory of Crop Genetics & Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China.
| | - Yi Han
- National Engineering Laboratory of Crop Stress Resistence Breeding, School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
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3
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Feng X, Chen Q, Wu W, Wang J, Li G, Xu S, Shao S, Liu M, Zhong C, Wu CI, Shi S, He Z. Genomic evidence for rediploidization and adaptive evolution following the whole-genome triplication. Nat Commun 2024; 15:1635. [PMID: 38388712 PMCID: PMC10884412 DOI: 10.1038/s41467-024-46080-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 02/13/2024] [Indexed: 02/24/2024] Open
Abstract
Whole-genome duplication (WGD), or polyploidy, events are widespread and significant in the evolutionary history of angiosperms. However, empirical evidence for rediploidization, the major process where polyploids give rise to diploid descendants, is still lacking at the genomic level. Here we present chromosome-scale genomes of the mangrove tree Sonneratia alba and the related inland plant Lagerstroemia speciosa. Their common ancestor has experienced a whole-genome triplication (WGT) approximately 64 million years ago coinciding with a period of dramatic global climate change. Sonneratia, adapting mangrove habitats, experienced extensive chromosome rearrangements post-WGT. We observe the WGT retentions display sequence and expression divergence, suggesting potential neo- and sub-functionalization. Strong selection acting on three-copy retentions indicates adaptive value in response to new environments. To elucidate the role of ploidy changes in genome evolution, we improve a model of the polyploidization-rediploidization process based on genomic evidence, contributing to the understanding of adaptive evolution during climate change.
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Affiliation(s)
- Xiao Feng
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, 510275, Guangzhou, China
| | - Qipian Chen
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, 510275, Guangzhou, China
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, 518120, Shenzhen, China
| | - Weihong Wu
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, 510275, Guangzhou, China
| | - Jiexin Wang
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, 510275, Guangzhou, China
| | - Guohong Li
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, 510275, Guangzhou, China
| | - Shaohua Xu
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, 510275, Guangzhou, China
| | - Shao Shao
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, 510275, Guangzhou, China
| | - Min Liu
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, 510275, Guangzhou, China
| | - Cairong Zhong
- Hainan Academy of Forestry (Hainan Academy of Mangrove), 571100, Haikou, China
| | - Chung-I Wu
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, 510275, Guangzhou, China
| | - Suhua Shi
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, 510275, Guangzhou, China.
| | - Ziwen He
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, 510275, Guangzhou, China.
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4
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Sharma M, Marhava P. Regulation of PIN polarity in response to abiotic stress. CURRENT OPINION IN PLANT BIOLOGY 2023; 76:102445. [PMID: 37714753 DOI: 10.1016/j.pbi.2023.102445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 08/01/2023] [Accepted: 08/14/2023] [Indexed: 09/17/2023]
Abstract
Plants have evolved robust adaptive mechanisms to withstand the ever-changing environment. Tightly regulated distribution of the hormone auxin throughout the plant body controls an impressive variety of developmental processes that tailor plant growth and morphology to environmental conditions. The proper flow and directionality of auxin between cells is mainly governed by asymmetrically localized efflux carriers - PINs - ensuring proper coordination of developmental processes in plants. Discerning the molecular players and cellular dynamics involved in the establishment and maintenance of PINs in specific membrane domains, as well as their ability to readjust in response to abiotic stressors is essential for understanding how plants balance adaptability and stability. While much is known about how PINs get polarized, there is still limited knowledge about how abiotic stresses alter PIN polarity by acting on these systems. In this review, we focus on the current understanding of mechanisms involved in (re)establishing and maintaining PIN polarity under abiotic stresses.
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Affiliation(s)
- Manvi Sharma
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre (UPSC), Swedish University of Agricultural Sciences (SLU), 90183, Umeå, Sweden
| | - Petra Marhava
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre (UPSC), Swedish University of Agricultural Sciences (SLU), 90183, Umeå, Sweden.
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5
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Dutta D. Interplay between membrane proteins and membrane protein-lipid pertaining to plant salinity stress. Cell Biochem Funct 2023. [PMID: 37158622 DOI: 10.1002/cbf.3798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 04/03/2023] [Accepted: 04/17/2023] [Indexed: 05/10/2023]
Abstract
High salinity in agricultural lands is one of the predominant issues limiting agricultural yields. Plants have developed several mechanisms to withstand salinity stress, but the mechanisms are not effective enough for most crops to prevent and persist the salinity stress. Plant salt tolerance pathways involve membrane proteins that have a crucial role in sensing and mitigating salinity stress. Due to a strategic location interfacing two distinct cellular environments, membrane proteins can be considered checkpoints to the salt tolerance pathways in plants. Related membrane proteins functions include ion homeostasis, osmosensing or ion sensing, signal transduction, redox homeostasis, and small molecule transport. Therefore, modulating plant membrane proteins' function, expression, and distribution can improve plant salt tolerance. This review discusses the membrane protein-protein and protein-lipid interactions related to plant salinity stress. It will also highlight the finding of membrane protein-lipid interactions from the context of recent structural evidence. Finally, the importance of membrane protein-protein and protein-lipid interaction is discussed, and a future perspective on studying the membrane protein-protein and protein-lipid interactions to develop strategies for improving salinity tolerance is proposed.
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Affiliation(s)
- Debajyoti Dutta
- Department of Biotechnology, Thapar Institute of Engineering and Technology, Patiala, Punjab, India
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6
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Grossi CEM, Santin F, Quintana SA, Fantino E, Ulloa RM. Calcium-dependent protein kinase 2 plays a positive role in the salt stress response in potato. PLANT CELL REPORTS 2022; 41:535-548. [PMID: 33651205 DOI: 10.1007/s00299-021-02676-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 02/17/2021] [Indexed: 06/12/2023]
Abstract
StCDPK2 is an early player in the salt stress response in potato plants; its overexpression promoted ROS scavenging, chlorophyll stability, and the induction of stress-responsive genes conferring tolerance to salinity. The salinity of soils affects plant development and is responsible for great losses in crop yields. Calcium-dependent protein kinases (CDPKs) are sensor-transducers that decode Ca2+ signatures triggered by abiotic stimuli and translate them into physiological responses. Histochemical analyses of potato plants harboring StCDPK2 promoter fused to the reporter gene β-glucuronidase (ProStCDPK2:GUS) revealed that GUS activity was high in the leaf blade and veins, it was restricted to root tips and lateral root primordia, and was observed upon stolon swelling. Comparison with ProStCDPK1:GUS and ProStCDPK3:GUS plants revealed their differential activities in the plant tissues. ProStCDPK2:GUS plants exposed to high salt presented enhanced GUS activity in roots which correlated with the numerous stress-responsive sites predicted in its promoter sequence. Moreover, StCDPK2 expression increased in in vitro potato plants after 2 h of high salt exposure and in greenhouse plants exposed to a dynamic stress condition. As inferred from biometric data and chlorophyll content, plants that overexpress StCDPK2 were more tolerant than wild-type plants when exposed to high salt. Overexpressing plants have a more efficient antioxidant system; they showed reduced accumulation of peroxide and higher catalase activity under salt conditions, and enhanced expression of WRKY6 and ERF5 transcription factors under control conditions. Our results indicate that StCDPK2 is an early player in the salt stress response and support a positive correlation between StCDPK2 overexpression and tolerance towards salt stress.
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Affiliation(s)
- Cecilia Eugenia María Grossi
- Laboratorio de Transducción de Señales en Plantas, Instituto de Investigaciones en Ingeniería Genética y Biología Molecular (INGEBI), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad Autónoma de Buenos Aires (C.A.B.A., Buenos Aires, Argentina
| | - Franco Santin
- Laboratorio de Transducción de Señales en Plantas, Instituto de Investigaciones en Ingeniería Genética y Biología Molecular (INGEBI), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad Autónoma de Buenos Aires (C.A.B.A., Buenos Aires, Argentina
- Instituto de Botánica Darwinion (IBODA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Silverio Andrés Quintana
- Laboratorio de Transducción de Señales en Plantas, Instituto de Investigaciones en Ingeniería Genética y Biología Molecular (INGEBI), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad Autónoma de Buenos Aires (C.A.B.A., Buenos Aires, Argentina
- Departamento de Biotecnología, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Asunción, San Lorenzo, Paraguay
| | - Elisa Fantino
- Laboratorio de Transducción de Señales en Plantas, Instituto de Investigaciones en Ingeniería Genética y Biología Molecular (INGEBI), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad Autónoma de Buenos Aires (C.A.B.A., Buenos Aires, Argentina
- Laboratoire de Recherche Sur le Métabolisme Spécialisé Végétal, Département de Chimie, Biochimie et Physique, Université du Québec à Trois-Rivières, Québec, Canada
| | - Rita María Ulloa
- Laboratorio de Transducción de Señales en Plantas, Instituto de Investigaciones en Ingeniería Genética y Biología Molecular (INGEBI), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad Autónoma de Buenos Aires (C.A.B.A., Buenos Aires, Argentina.
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina.
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7
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Gomes GLB, Scortecci KC. Auxin and its role in plant development: structure, signalling, regulation and response mechanisms. PLANT BIOLOGY (STUTTGART, GERMANY) 2021; 23:894-904. [PMID: 34396657 DOI: 10.1111/plb.13303] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 05/04/2021] [Indexed: 05/28/2023]
Abstract
Auxins are plant hormones that play a central role in controlling plant growth and development across different environmental conditions. Even at low concentrations, auxins can regulate gene expression through specific transcription factors and proteins that are modulated to environmental responses in the signalling cascade. Auxins are synthesized in tissues with high cell division activity and distributed by specific transmembrane proteins that regulate efflux and influx. This review presents recent advances in understanding the biosynthetic pathways, both dependent and independent of tryptophan, highlighting the intermediate indole compounds (indole-3-acetamide, indole-3-acetaldoxime, indole-3-pyruvic acid and tryptamine) and the key enzymes for auxin biosynthesis, such as YUCs and TAAs. In relation to the signalling cascade, it has been shown that auxins influence gene expression regulation by the connection between synthesis and distribution. Moreover, the molecular action of the auxin response factors and auxin/indole-3-acetic acid transcription factors with the F-box TIR1/AFB auxin receptors regulates gene expression. In addition, the importance of microRNAs in the auxin signalling pathway and their influence on plant plasticity to environmental fluctuations is also demonstrated. Finally, this review describes the chemical and biological processes involving auxins in plants.
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Affiliation(s)
- G L B Gomes
- Programa de Pós-Graduação em Bioquímica, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal, Brazil
- Laboratório de Transformação de Plantas e Análises em Microscopia, Departamento de Biologia Celular e Genética, Universidade Federal do Rio Grande do Norte, Natal, Brazil
| | - K C Scortecci
- Programa de Pós-Graduação em Bioquímica, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal, Brazil
- Laboratório de Transformação de Plantas e Análises em Microscopia, Departamento de Biologia Celular e Genética, Universidade Federal do Rio Grande do Norte, Natal, Brazil
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8
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Nakamura C, Takenaka S, Nitta M, Yamamoto M, Kawazoe T, Ono S, Takenaka M, Inoue K, Takenaka S, Kawai S. High sensitivity of roots to salt stress as revealed by novel tip bioassay in wheat seedlings. BIOTECHNOL BIOTEC EQ 2020. [DOI: 10.1080/13102818.2020.1852890] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Affiliation(s)
- Chiharu Nakamura
- Department of Plant Life Science, Faculty of Agriculture, Ryukoku University, Otsu, Japan
| | - Shotaro Takenaka
- Department of Plant Life Science, Faculty of Agriculture, Ryukoku University, Otsu, Japan
| | - Miyuki Nitta
- Division of Applied Biosciences, Graduate School of Agricultural Science, Kyoto University, Kyoto, Japan
| | - Mikio Yamamoto
- Department of Plant Life Science, Faculty of Agriculture, Ryukoku University, Otsu, Japan
| | - Tetsuya Kawazoe
- Department of Plant Life Science, Faculty of Agriculture, Ryukoku University, Otsu, Japan
| | - Shunsuke Ono
- Department of Plant Life Science, Faculty of Agriculture, Ryukoku University, Otsu, Japan
| | - Motoki Takenaka
- Department of Plant Life Science, Faculty of Agriculture, Ryukoku University, Otsu, Japan
| | - Kazuma Inoue
- Department of Plant Life Science, Faculty of Agriculture, Ryukoku University, Otsu, Japan
| | - Shotaro Takenaka
- Department of Plant Life Science, Faculty of Agriculture, Ryukoku University, Otsu, Japan
| | - Shingo Kawai
- Department of Plant Life Science, Faculty of Agriculture, Ryukoku University, Otsu, Japan
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9
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Zhu C, Zhang S, Zhou C, Chen L, Zaripov T, Zhan D, Weng J, Lin Y, Lai Z, Guo Y. Integrated Transcriptome, microRNA, and Phytochemical Analyses Reveal Roles of Phytohormone Signal Transduction and ABC Transporters in Flavor Formation of Oolong Tea ( Camellia sinensis) during Solar Withering. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:12749-12767. [PMID: 33112139 DOI: 10.1021/acs.jafc.0c05750] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
The unique aroma and flavor of oolong tea develop during the withering stage of postharvest processing. We explored the roles of miRNA-related regulatory networks during tea withering and their effects on oolong tea quality. We conducted transcriptome and miRNA analyses to identify differentially expressed (DE) miRNAs and target genes among fresh leaves, indoor-withered leaves, and solar-withered leaves. We identified 32 DE-miRNAs and 41 target genes involved in phytohormone signal transduction and ABC transporters. Further analyses indicated that these two pathways regulated the accumulation of flavor-related metabolites during tea withering. Flavonoid accumulation was correlated with the miR167d_1-ARF-GH3, miR845-ABCC1-3/ABCC2, miR166d-5p_1-ABCC1-2, and miR319c_3-PIF-ARF modules. Terpenoid content was correlated with the miR171b-3p_2-DELLA-MYC2 and miR166d-5p_1-ABCG2-MYC2 modules. These modules inhibited flavonoid biosynthesis and enhanced terpenoid biosynthesis in solar-withered leaves. Low auxin and gibberellic acid contents and circRNA-related regulatory networks also regulated the accumulation of flavor compounds in solar-withered leaves. Our analyses reveal how solar withering produces high-quality oolong tea.
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Affiliation(s)
- Chen Zhu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Key Laboratory of Tea Science in Universities of Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Shuting Zhang
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Chengzhe Zhou
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Key Laboratory of Tea Science in Universities of Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Lan Chen
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Key Laboratory of Tea Science in Universities of Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Timur Zaripov
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Key Laboratory of Tea Science in Universities of Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Dongmei Zhan
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Key Laboratory of Tea Science in Universities of Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Jingjing Weng
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Key Laboratory of Tea Science in Universities of Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yuling Lin
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Zhongxiong Lai
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yuqiong Guo
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Key Laboratory of Tea Science in Universities of Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, China
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10
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Szepesi Á. Halotropism: Phytohormonal Aspects and Potential Applications. FRONTIERS IN PLANT SCIENCE 2020; 11:571025. [PMID: 33042187 PMCID: PMC7527526 DOI: 10.3389/fpls.2020.571025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 09/02/2020] [Indexed: 05/15/2023]
Abstract
Halotropism is a sodium specific tropic movement of roots in order to obtain the optimal salt concentration for proper growth and development. Numerous results suggest that halotropic events are under the control and regulation of complex plant hormone pathway. This minireview collects some recent evidences about sodium sensing during halotropism and the hormonal regulation of halotropic responses in glycophytes. The precise hormonal mechanisms by which halophytes plant roots perceive salt stress and translate this perception into adaptive, directional growth forward increased salt concentrations are not well understood. This minireview aims to gather recently deciphered information about halotropism focusing potential hormonal aspects both in glycophytes and halophytes. Advances in our understanding of halotropic responses in different plant species could help these plants to be used for sustainable agriculture and other future applications.
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Affiliation(s)
- Ágnes Szepesi
- Department of Plant Biology, Institute of Biology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
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Siao W, Coskun D, Baluška F, Kronzucker HJ, Xu W. Root-Apex Proton Fluxes at the Centre of Soil-Stress Acclimation. TRENDS IN PLANT SCIENCE 2020; 25:794-804. [PMID: 32673580 DOI: 10.1016/j.tplants.2020.03.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 02/13/2020] [Accepted: 03/04/2020] [Indexed: 05/22/2023]
Abstract
Proton (H+) fluxes in plant roots play critical roles in maintaining root growth and facilitating plant responses to multiple soil stresses, including fluctuations in nutrient supply, salt infiltration, and water stress. Soil mining for nutrients and water, rates of nutrient uptake, and the modulation of cell expansion all depend on the regulation of root H+ fluxes, particularly at the root apex, mediated primarily by the activity of plasma membrane (PM) H+-ATPases. Here, we summarize recent findings on the regulatory mechanisms of H+ fluxes at the root apex under three abiotic stress conditions - phosphate deficiency, salinity stress, and water deficiency - and present an integrated physiomolecular view of the functions of H+ fluxes in maintaining root growth in the acclimation to soil stress.
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Affiliation(s)
- Wei Siao
- Center for Plant Water-Use and Nutrition Regulation and College of Life Sciences, Joint International Research Laboratory of Water and Nutrient in Crop, Fujian Agriculture and Forestry University, Jinshan Fuzhou 350002, China; Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium; Center for Plant Systems Biology, VIB, 9052 Ghent, Belgium
| | - Devrim Coskun
- Département de Phytologie, Faculté des Sciences de l'Agriculture et de l'Alimentation, Université Laval, Québec, QC G1V 0A6, Canada
| | - František Baluška
- Institute of Cellular and Molecular Botany, University of Bonn, 53115 Bonn, Germany
| | - Herbert J Kronzucker
- School of Agriculture and Food, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, VIC 3010, Australia; Faculty of Land and Food Systems, University of British Columbia, Vancouver, BC V6T 1Z4, Canada.
| | - Weifeng Xu
- Center for Plant Water-Use and Nutrition Regulation and College of Life Sciences, Joint International Research Laboratory of Water and Nutrient in Crop, Fujian Agriculture and Forestry University, Jinshan Fuzhou 350002, China.
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Blakeslee JJ, Spatola Rossi T, Kriechbaumer V. Auxin biosynthesis: spatial regulation and adaptation to stress. JOURNAL OF EXPERIMENTAL BOTANY 2019; 70:5041-5049. [PMID: 31198972 DOI: 10.1093/jxb/erz283] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 06/03/2019] [Indexed: 05/25/2023]
Abstract
The plant hormone auxin is essential for plant growth and development, controlling both organ development and overall plant architecture. Auxin homeostasis is regulated by coordination of biosynthesis, transport, conjugation, sequestration/storage, and catabolism to optimize concentration-dependent growth responses and adaptive responses to temperature, water stress, herbivory, and pathogens. At present, the best defined pathway of auxin biosynthesis is the TAA/YUC route, in which the tryptophan aminotransferases TAA and TAR and YUCCA flavin-dependent monooxygenases produce the auxin indole-3-acetic acid from tryptophan. This review highlights recent advances in our knowledge of TAA/YUC-dependent auxin biosynthesis focusing on membrane localization of auxin biosynthetic enzymes, differential regulation in root and shoot tissue, and auxin biosynthesis during abiotic stress.
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Affiliation(s)
- Joshua J Blakeslee
- Department of Horticulture and Crop Science, The Ohio State University, Wooster, OH, USA
| | - Tatiana Spatola Rossi
- Department of Biological and Medical Sciences, Oxford Brookes University, Oxford, UK
| | - Verena Kriechbaumer
- Department of Biological and Medical Sciences, Oxford Brookes University, Oxford, UK
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Abstract
Roots provide the primary mechanism that plants use to absorb water and nutrients from their environment. These functions are dependent on developmental mechanisms that direct root growth and branching into regions of soil where these resources are relatively abundant. Water is the most limiting factor for plant growth, and its availability is determined by the weather, soil structure, and salinity. In this review, we define the developmental pathways that regulate the direction of growth and branching pattern of the root system, which together determine the expanse of soil from which a plant can access water. The ability of plants to regulate development in response to the spatial distribution of water is a focus of many recent studies and provides a model for understanding how biological systems utilize positional cues to affect signaling and morphogenesis. A better understanding of these processes will inform approaches to improve crop water use efficiency to more sustainably feed a growing population.
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Affiliation(s)
- José R. Dinneny
- Department of Biology, Stanford University, Stanford, California 94305, USA
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14
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Muthert LWF, Izzo LG, van Zanten M, Aronne G. Root Tropisms: Investigations on Earth and in Space to Unravel Plant Growth Direction. FRONTIERS IN PLANT SCIENCE 2019; 10:1807. [PMID: 32153599 PMCID: PMC7047216 DOI: 10.3389/fpls.2019.01807] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 12/24/2019] [Indexed: 05/12/2023]
Abstract
Root tropisms are important responses of plants, allowing them to adapt their growth direction. Research on plant tropisms is indispensable for future space programs that envisage plant-based life support systems for long-term missions and planet colonization. Root tropisms encompass responses toward or away from different environmental stimuli, with an underexplored level of mechanistic divergence. Research into signaling events that coordinate tropistic responses is complicated by the consistent coincidence of various environmental stimuli, often interacting via shared signaling mechanisms. On Earth the major determinant of root growth direction is the gravitational vector, acting through gravitropism and overruling most other tropistic responses to environmental stimuli. Critical advancements in the understanding of root tropisms have been achieved nullifying the gravitropic dominance with experiments performed in the microgravity environment. In this review, we summarize current knowledge on root tropisms to different environmental stimuli. We highlight that the term tropism must be used with care, because it can be easily confused with a change in root growth direction due to asymmetrical damage to the root, as can occur in apparent chemotropism, electrotropism, and magnetotropism. Clearly, the use of Arabidopsis thaliana as a model for tropism research contributed much to our understanding of the underlying regulatory processes and signaling events. However, pronounced differences in tropisms exist among species, and we argue that these should be further investigated to get a more comprehensive view of the signaling pathways and sensors. Finally, we point out that the Cholodny-Went theory of asymmetric auxin distribution remains to be the central and unifying tropistic mechanism after 100 years. Nevertheless, it becomes increasingly clear that the theory is not applicable to all root tropistic responses, and we propose further research to unravel commonalities and differences in the molecular and physiological processes orchestrating root tropisms.
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Affiliation(s)
| | - Luigi Gennaro Izzo
- Department of Agricultural Sciences, University of Naples Federico II, Naples, Italy
- *Correspondence: Luigi Gennaro Izzo,
| | - Martijn van Zanten
- Molecular Plant Physiology, Institute of Environmental Biology, Utrecht University, Utrecht, Netherlands
| | - Giovanna Aronne
- Department of Agricultural Sciences, University of Naples Federico II, Naples, Italy
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Fu Y, Yang Y, Chen S, Ning N, Hu H. Arabidopsis IAR4 Modulates Primary Root Growth Under Salt Stress Through ROS-Mediated Modulation of Auxin Distribution. FRONTIERS IN PLANT SCIENCE 2019; 10:522. [PMID: 31105724 PMCID: PMC6494962 DOI: 10.3389/fpls.2019.00522] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 04/04/2019] [Indexed: 05/08/2023]
Abstract
High salinity is one of the major environmental stresses that plants encounter. Roots are the initial and direct organs to perceive the signal. However, how plant roots perceive and respond to salinity at the molecular and physiological levels is still poorly understood. Here, we report that IAA-CONJUGATE-RESISTANT 4 (IAR4) plays a key role in primary root growth under salt stress conditions. Mutation of IAR4 led to increased sensitivity to salt stress conditions, with strongly inhibited primary root growth and reduced survival rate in two iar4 mutant alleles. iar4 mutants accumulated greater Na+ and exhibited a greater Na+/K+ ratio under NaCl treatment. In addition, more reactive oxygen species (ROS) accumulated in the iar4 mutants due to reduced ROS scavenging. NaCl treatment greatly suppressed the expression levels of ProPIN1:PIN1-GFP, ProPIN2:PIN2-GFP, ProPIN3:PIN3-GFP, and ProDR5:GFP, and suppressed root meristem activity in iar4. GSH or auxin treatment greatly recovered the PIN expression, auxin distribution and primary root growth in the iar4 mutants, suggesting ROS is a vital mediator between salt stress and auxin response. Our data support a model in which IAR4 integrates ROS and auxin pathways to modulate primary root growth under salinity stress conditions, by regulation of PIN-mediated auxin transport.
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Tsugama D, Liu S, Fujino K, Takano T. Calcium signalling regulates the functions of the bZIP protein VIP1 in touch responses in Arabidopsis thaliana. ANNALS OF BOTANY 2018; 122:1219-1229. [PMID: 30010769 PMCID: PMC6324745 DOI: 10.1093/aob/mcy125] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Accepted: 06/12/2018] [Indexed: 05/22/2023]
Abstract
BACKGROUND AND AIMS VIP1 is a bZIP transcription factor in Arabidopsis thaliana. VIP1 and its close homologues transiently accumulate in the nucleus when cells are exposed to hypo-osmotic and/or mechanical stress. Touch-induced root bending is enhanced in transgenic plants overexpressing a repression domain-fused form of VIP1 (VIP1-SRDXox), suggesting that VIP1, possibly with its close homologues, suppresses touch-induced root bending. The aim of this study was to identify regulators of these functions of VIP1 in mechanical stress responses. METHODS Co-immunoprecipitation analysis using VIP1-GFP fusion protein expressed in Arabidopsis plants identified calmodulins as VIP1-GFP interactors. In vitro crosslink analysis was performed using a hexahistidine-tagged calmodulin and glutathione S-transferase-fused forms of VIP1 and its close homologues. Plants expressing GFP-fused forms of VIP1 and its close homologues (bZIP59 and bZIP29) were submerged in hypotonic solutions containing divalent cation chelators, EDTA and EGTA, and a potential calmodulin inhibitor, chlorpromazine, to examine their effects on the nuclear-cytoplasmic shuttling of those proteins. VIP1-SRDXox plants were grown on medium containing 40 mm CaCl2, 40 mm MgCl2 or 80 mm NaCl. MCA1 and MCA2 are mechanosensitive calcium channels, and the hypo-osmotic stress-dependent nuclear-cytoplasmic shuttling of VIP1-GFP in the mca1 mca2 double knockout mutant background was examined. KEY RESULTS In vitro crosslink products were detected in the presence of CaCl2, but not in its absence. EDTA, EGTA and chlorpromazine all inhibited both the nuclear import and the nuclear export of VIP1-GFP, bZIP59-GFP and bZIP29-GFP. Either 40 mm CaCl2or 80 mm NaCl enhanced the VIP-SRDX-dependent root bending. The nuclear-cytoplasmic shuttling of VIP1 was observed even in the mca1 mca2 mutant. CONCLUSIONS VIP1 and its close homologues can interact with calmodulins. Their nuclear-cytoplasmic shuttling requires neither MCA1 nor MCA2, but does require calcium signalling. Salt stress affects the VIP1-dependent regulation of root bending.
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Affiliation(s)
- Daisuke Tsugama
- Laboratory of Crop Physiology, Research Faculty of Agriculture, Hokkaido University, Sapporo-shi, Hokkaido, Japan
- Asian Natural Environmental Science Center, The University of Tokyo, Nishitokyo-shi, Tokyo, Japan
- For correspondence. E-mail:
| | - Shenkui Liu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Lin’an, Hangzhou, PR China
| | - Kaien Fujino
- Laboratory of Crop Physiology, Research Faculty of Agriculture, Hokkaido University, Sapporo-shi, Hokkaido, Japan
| | - Tetsuo Takano
- Asian Natural Environmental Science Center, The University of Tokyo, Nishitokyo-shi, Tokyo, Japan
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Korver RA, Koevoets IT, Testerink C. Out of Shape During Stress: A Key Role for Auxin. TRENDS IN PLANT SCIENCE 2018; 23:783-793. [PMID: 29914722 PMCID: PMC6121082 DOI: 10.1016/j.tplants.2018.05.011] [Citation(s) in RCA: 116] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Revised: 05/17/2018] [Accepted: 05/23/2018] [Indexed: 05/19/2023]
Abstract
In most abiotic stress conditions, including salinity and water deficit, the developmental plasticity of the plant root is regulated by the phytohormone auxin. Changes in auxin concentration are often attributed to changes in shoot-derived long-distance auxin flow. However, recent evidence suggests important contributions by short-distance auxin transport from local storage and local auxin biosynthesis, conjugation, and oxidation during abiotic stress. We discuss here current knowledge on long-distance auxin transport in stress responses, and subsequently debate how short-distance auxin transport and indole-3-acetic acid (IAA) metabolism play a role in influencing eventual auxin accumulation and signaling patterns. Our analysis stresses the importance of considering all these components together and highlights the use of mathematical modeling for predictions of plant physiological responses.
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Affiliation(s)
- Ruud A Korver
- University of Amsterdam, Plant Cell Biology, Swammerdam Institute for Life Sciences, 1090GE Amsterdam, The Netherlands; Laboratory of Plant Physiology, 6708PB Wageningen University and Research, Wageningen, The Netherlands
| | - Iko T Koevoets
- Laboratory of Plant Physiology, 6708PB Wageningen University and Research, Wageningen, The Netherlands
| | - Christa Testerink
- Laboratory of Plant Physiology, 6708PB Wageningen University and Research, Wageningen, The Netherlands.
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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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Murphy A. Plant membranes and border control. JOURNAL OF EXPERIMENTAL BOTANY 2017; 68:3037-3040. [PMID: 28899083 PMCID: PMC5853494 DOI: 10.1093/jxb/erx229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
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