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Wittmann L, Eigenfeld M, Büchner K, Meiler J, Habisch H, Madl T, Kerpes R, Becker T, Berensmeier S, Schwaminger SP. Millifluidic magnetophoresis-based chip for age-specific fractionation: evaluating the impact of age on metabolomics and gene expression in yeast. LAB ON A CHIP 2024; 24:2987-2998. [PMID: 38739033 DOI: 10.1039/d4lc00185k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
A novel millifluidic process introduces age-based fractionation of S. pastorianus var. carlsbergensis yeast culture through magnetophoresis. Saccharomyces yeast is a model organism for aging research used in various industries. Traditional age-based cell separation methods were labor-intensive, but techniques like magnetic labeling have eased the process by being non-invasive and scalable. Our approach introduces an age-specific fractionation using a 3D-printed millfluidic chip in a two-step process, ensuring efficient cell deflection in the magnetic field and counteracting magnetic induced convection. Among various channel designs, the pinch-shaped channel proved most effective for age differentiation based on magnetically labeled bud scar numbers. Metabolomic analyses revealed changes in certain amino acids and increased NAD+ levels, suggesting metabolic shifts in aging cells. Gene expression studies further underlined these age-related metabolic changes. This innovative platform offers a high-throughput, non-invasive method for age-specific yeast cell fractionation, with potential applications in industries ranging from food and beverages to pharmaceuticals.
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Affiliation(s)
- L Wittmann
- TUM School of Engineering and Design, Chair of Bioseparation Engineering, Technical University of Munich, Boltzmannstr. 15, 85748 Garching, Germany.
| | - M Eigenfeld
- TUM School of Life Science, Chair of Brewing and Beverage Technology, Technical University of Munich, Weihenstephaner Steig 20, 85354 Freising, Germany.
- Otto-Loewi Research Center, Division of Medicinal Chemistry, Medical University of Graz, Neue Stiftingtalstr. 6, 8010 Graz, Austria
| | - K Büchner
- TUM School of Life Science, Chair of Brewing and Beverage Technology, Technical University of Munich, Weihenstephaner Steig 20, 85354 Freising, Germany.
| | - J Meiler
- TUM School of Engineering and Design, Chair of Bioseparation Engineering, Technical University of Munich, Boltzmannstr. 15, 85748 Garching, Germany.
| | - H Habisch
- Otto-Loewi Research Center, Division of Medicinal Chemistry, Medical University of Graz, Neue Stiftingtalstr. 6, 8010 Graz, Austria
| | - T Madl
- Otto-Loewi Research Center, Division of Medicinal Chemistry, Medical University of Graz, Neue Stiftingtalstr. 6, 8010 Graz, Austria
- BioTechMed-Graz, Mozartgasse 12/II, 8010 Graz, Austria.
| | - R Kerpes
- TUM School of Life Science, Chair of Brewing and Beverage Technology, Technical University of Munich, Weihenstephaner Steig 20, 85354 Freising, Germany.
| | - T Becker
- Otto-Loewi Research Center, Division of Medicinal Chemistry, Medical University of Graz, Neue Stiftingtalstr. 6, 8010 Graz, Austria
- Munich Institute of Integrated Materials, Energy and Process Engineering, Technical University of Munich, Lichtenberstr. 4a, 85748 Garching, Germany
| | - S Berensmeier
- TUM School of Engineering and Design, Chair of Bioseparation Engineering, Technical University of Munich, Boltzmannstr. 15, 85748 Garching, Germany.
- Munich Institute of Integrated Materials, Energy and Process Engineering, Technical University of Munich, Lichtenberstr. 4a, 85748 Garching, Germany
| | - S P Schwaminger
- TUM School of Engineering and Design, Chair of Bioseparation Engineering, Technical University of Munich, Boltzmannstr. 15, 85748 Garching, Germany.
- Otto-Loewi Research Center, Division of Medicinal Chemistry, Medical University of Graz, Neue Stiftingtalstr. 6, 8010 Graz, Austria
- BioTechMed-Graz, Mozartgasse 12/II, 8010 Graz, Austria.
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Zeng F, Feng Y, Wang T, Ma X, Jiao S, Yang S, Shao M, Ma Z, Mao J, Chen B. The asymmetric expression of plasma membrane H +-ATPase family genes in response to pulvinus-driven leaf phototropism movement in Vitis vinifera. PHYSIOLOGIA PLANTARUM 2024; 176:e14380. [PMID: 38894644 DOI: 10.1111/ppl.14380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 05/15/2024] [Accepted: 05/26/2024] [Indexed: 06/21/2024]
Abstract
Phototropism movement is crucial for plants to adapt to various environmental changes. Plant P-type H+-ATPase (HA) plays diverse roles in signal transduction during cell expansion, regulation of cellular osmotic potential and stomatal opening, and circadian movement. Despite numerous studies on the genome-wide analysis of Vitis vinifera, no research has been done on the P-type H+-ATPase family genes, especially concerning pulvinus-driven leaf movement. In this study, 55 VvHAs were identified and classified into nine distinct subgroups (1 to 9). Gene members within the same subgroups exhibit similar features in motif, intron/exon, and protein tertiary structures. Furthermore, four pairs of genes were derived by segmental duplication in grapes. Cis-acting element analysis identified numerous light/circadian-related elements in the promoters of VvHAs. qRT-PCR analysis showed that several genes of subgroup 7 were highly expressed in leaves and pulvinus during leaf movement, especially VvHA14, VvHA15, VvHA16, VvHA19, VvHA51, VvHA52, and VvHA54. Additionally, we also found that the VvHAs genes were asymmetrically expressed on both sides of the extensor and flexor cell of the motor organ, the pulvinus. The expression of VvHAs family genes in extensor cells was significantly higher than that in flexor cells. Overall, this study serves as a foundation for further investigations into the functions of VvHAs and contributes to the complex mechanisms underlying grapevine pulvinus growth and development.
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Affiliation(s)
- Fanwei Zeng
- College of Horticulture, Gansu Agricultural University, Lanzhou, PR China
| | - Yongqing Feng
- College of Horticulture, Gansu Agricultural University, Lanzhou, PR China
| | - Tian Wang
- College of Horticulture, Gansu Agricultural University, Lanzhou, PR China
| | - Xiyuan Ma
- College of Horticulture, Gansu Agricultural University, Lanzhou, PR China
| | - Shuzhen Jiao
- College of Horticulture, Gansu Agricultural University, Lanzhou, PR China
| | - Shangwen Yang
- College of Horticulture, Gansu Agricultural University, Lanzhou, PR China
| | - Miao Shao
- College of Horticulture, Gansu Agricultural University, Lanzhou, PR China
| | - Zonghuan Ma
- College of Horticulture, Gansu Agricultural University, Lanzhou, PR China
| | - Juan Mao
- College of Horticulture, Gansu Agricultural University, Lanzhou, PR China
| | - Baihong Chen
- College of Horticulture, Gansu Agricultural University, Lanzhou, PR China
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Lapshin NK, Piotrovskii MS, Trofimova MS. Sterol Extraction from Isolated Plant Plasma Membrane Vesicles Affects H +-ATPase Activity and H +-Transport. Biomolecules 2021; 11:1891. [PMID: 34944535 PMCID: PMC8699270 DOI: 10.3390/biom11121891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 12/14/2021] [Accepted: 12/15/2021] [Indexed: 11/16/2022] Open
Abstract
Plasma membrane H+-ATPase is known to be detected in detergent-resistant sterol-enriched fractions, also called "raft" domains. Studies on H+-ATPase reconstituted in artificial or native membrane vesicles have shown both sterol-mediated stimulations and inhibitions of its activity. Here, using sealed isolated plasma membrane vesicles, we investigated the effects of sterol depletion in the presence of methyl-β-cyclodextrin (MβCD) on H+-ATPase activity. The rate of ATP-dependent ∆µH+ generation and the kinetic parameters of ATP hydrolysis were evaluated. We show that the relative sterols content in membrane vesicles decreased gradually after treatment with MβCD and reached approximately 40% of their initial level in 30 mM probe solution. However, changes in the hydrolytic and H+-transport activities of the enzyme were nonlinear. The extraction of up to 20% of the initial sterols was accompanied by strong stimulation of ATP-dependent H+-transport in comparison with the hydrolytic activity of enzymes. Further sterol depletion led to a significant inhibition of active proton transport with an increase in passive H+-leakage. The solubilization of control and sterol-depleted vesicles in the presence of dodecyl maltoside negated the differences in the kinetics parameters of ATP hydrolysis, and all samples demonstrated maximal hydrolytic activities. The mechanisms behind the sensitivity of ATP-dependent H+-transport to sterols in the lipid environment of plasma membrane H+-ATPase are discussed.
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Affiliation(s)
| | | | - Marina S. Trofimova
- K.A. Timiryazev Institute of Plant Physiology of the Russian Academy of Sciences (IPP RAS), 35 Botanicheskaya St., 127276 Moscow, Russia; (N.K.L.); (M.S.P.)
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Qu L, Chu YJ, Lin WH, Xue HW. A secretory phospholipase D hydrolyzes phosphatidylcholine to suppress rice heading time. PLoS Genet 2021; 17:e1009905. [PMID: 34879072 PMCID: PMC8654219 DOI: 10.1371/journal.pgen.1009905] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Accepted: 10/21/2021] [Indexed: 11/18/2022] Open
Abstract
Phospholipase D (PLD) hydrolyzes membrane phospholipids and is crucial in various physiological processes and transduction of different signals. Secretory phospholipases play important roles in mammals, however, whose functions in plants remain largely unknown. We previously identified a rice secretory PLD (spPLD) that harbors a signal peptide and here we reported the secretion and function of spPLD in rice heading time regulation. Subcellular localization analysis confirmed the signal peptide is indispensable for spPLD secretion into the extracellular spaces, where spPLD hydrolyzes substrates. spPLD overexpression results in delayed heading time which is dependent on its secretory character, while suppression or deficiency of spPLD led to the early heading of rice under both short-day and long-day conditions, which is consistent with that spPLD overexpression/suppression indeed led to the reduced/increased Hd3a/RFT1 (Arabidopsis Flowing Locus T homolog) activities. Interestingly, rice Hd3a and RFT1 bind to phosphatidylcholines (PCs) and a further analysis by lipidomic approach using mass spectrometry revealed the altered phospholipids profiles in shoot apical meristem, particularly the PC species, under altered spPLD expressions. These results indicate the significance of secretory spPLD and help to elucidate the regulatory network of rice heading time. Secretory phospholipases play essential roles in physiological processes of mammals, while functions of them in plants remain unknown. We identified a rice secretory PLD (spPLD) harboring a signal peptide which is indispensable for secretion of spPLD. Functional studies showed that altered spPLD expression resulted in the changed heading time of rice under both short-day and long-day conditions, which is dependent on the secretory character of spPLD. Rice Hd3a and RFT1, the homologs of Arabidopsis Flowing Locus T (FT), bind to phosphatidylcholine (PC) to promote heading. Analysis of phospholipids profiles in shoot apical meristem by using a mass spectrometry-based lipidomic approach demonstrated that spPLD regulates heading time by hydrolyzing the light period-predominant PC species, further revealing the crucial role of secretory proteins in regulating plant growth and development.
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Affiliation(s)
- Li Qu
- Shanghai Collaborative Innovation Center of Agri-Seeds, Joint Center for Single Cell Biology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Yu-Jia Chu
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Wen-Hui Lin
- School of Life Sciences and Biotechnology, The Joint International Research Laboratory of Metabolic and Developmental Sciences, Joint Center for Single Cell Biology, Shanghai Jiao Tong University, Shanghai, China
- * E-mail: (W-HL); (H-WX)
| | - Hong-Wei Xue
- Shanghai Collaborative Innovation Center of Agri-Seeds, Joint Center for Single Cell Biology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, China
- * E-mail: (W-HL); (H-WX)
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Liang C, Zhang Y, Ren X. Calcium regulates antioxidative isozyme activity for enhancing rice adaption to acid rain stress. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2021; 306:110876. [PMID: 33775371 DOI: 10.1016/j.plantsci.2021.110876] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 02/05/2021] [Accepted: 03/06/2021] [Indexed: 05/08/2023]
Abstract
Acid rain, as a typical abiotic stress, damages plant growth and production. Calcium (Ca) mediates plant growth and links the signal transduction in plants for adapting to abiotic stresses. To understand the effect of Ca2+ on plant adaptable response to acid rain, we investigated changes in activities and gene expression of antioxidative enzymes and fatty acid composition of membrane lipid in rice seedlings treated with exogenous Ca2+ (5 mM) or/and simulated acid rain (SAR, pH 3.5 / 2.5). Exogenous Ca2+ enhanced activities of superoxide dismutase, catalase and peroxidase isozymes in rice leaves under SAR stress by promoting activation of existing isoforms and up-regulation of Cu/Zn-SOD1, Cu/Zn-SOD2, Cu/Zn-SOD3, CAT1, CAT2 and POD1. Compared to SAR treatment alone, exogenous Ca2+ alleviated SAR-induced oxidative damage to cell membrane by enhancing antioxidative capacity, as shown by the decrease in concentrations of H2O2, O2- and malondialdehyde in rice leaves. Meanwhile, Ca2+ alleviated SAR-induced decrease in unsaturation of membrane lipid for maintaining membrane fluidity. Finally, exogenous Ca2+ alleviated SAR-induced inhibition on relative growth rate of rice. Therefore, Ca2+ could play a role in regulating activities of antioxidative enzymes as well as maintaining unsaturation of membrane lipid for enhancing tolerance in rice seedlings to acid rain stress.
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Affiliation(s)
- Chanjuan Liang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China; Jiangsu Cooperative Innovation Center of Technology and Material of Water Treatment, China.
| | - Yuanqi Zhang
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China
| | - Xiaoqian Ren
- Jiangsu Cooperative Innovation Center of Technology and Material of Water Treatment, China
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Xu Z, Marowa P, Liu H, Du H, Zhang C, Li Y. Genome-Wide Identification and Analysis of P-Type Plasma Membrane H +-ATPase Sub-Gene Family in Sunflower and the Role of HHA4 and HHA11 in the Development of Salt Stress Resistance. Genes (Basel) 2020; 11:genes11040361. [PMID: 32230880 PMCID: PMC7231311 DOI: 10.3390/genes11040361] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 03/25/2020] [Accepted: 03/26/2020] [Indexed: 01/02/2023] Open
Abstract
The P-type plasma membrane (PM) H+-ATPase plays a major role during the growth and development of a plant. It is also involved in plant resistance to a variety of biotic and abiotic factors, including salt stress. The PM H+-ATPase gene family has been well characterized in Arabidopsis and other crop plants such as rice, cucumber, and potato; however, the same cannot be said in sunflower (Helianthus annuus). In this study, a total of thirteen PM H+-ATPase genes were screened from the recently released sunflower genome database with a comprehensive genome-wide analysis. According to a systematic phylogenetic classification with a previously reported species, the sunflower PM H+-ATPase genes (HHAs) were divided into four sub-clusters (I, II, IV, and V). In addition, systematic bioinformatics analyses such as gene structure analysis, chromosome location analysis, subcellular localization predication, conserved motifs, and Cis-acting elements of promoter identification were also done. Semi-quantitative PCR analysis data of HHAs in different sunflower tissues revealed the specificity of gene spatiotemporal expression and sub-cluster grouping. Those belonging to sub-cluster I and II exhibited wide expression in almost all of the tissues studied while sub-cluster IV and V seldom showed expression. In addition, the expression of HHA4, HHA11, and HHA13 was shown to be induced by salt stress. The transgenic plants overexpressing HHA4 and HHA11 showed higher salinity tolerance compared with wild-type plants. Further analysis showed that the Na+ content of transgenic Arabidopsis plants decreased under salt stress, which indicates that PM H+ ATPase participates in the physiological process of Na+ efflux, resulting in salt resistance of the plants. This study is the first to identify and analyze the sunflower PM H+ ATPase gene family. It does not only lay foundation for future research but also demonstrates the role played by HHAs in salt stress tolerance.
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Affiliation(s)
- Zongchang Xu
- Marine Agriculture Research Center, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China; (Z.X.); (C.Z.)
| | - Prince Marowa
- Crop Science Department, University of Zimbabwe, Harare 00263, Zimbabwe;
| | - Han Liu
- College of Agriculture, Qingdao Agricultural University, Qingdao 266109, China; (H.L.); (H.D.)
| | - Haina Du
- College of Agriculture, Qingdao Agricultural University, Qingdao 266109, China; (H.L.); (H.D.)
| | - Chengsheng Zhang
- Marine Agriculture Research Center, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China; (Z.X.); (C.Z.)
| | - Yiqiang Li
- Marine Agriculture Research Center, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China; (Z.X.); (C.Z.)
- Correspondence: ; Tel.: +86-0532-6671-5597
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Liang C, Ma Y, Li L. Comparison of plasma membrane H +-ATPase response to acid rain stress between rice and soybean. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:6389-6400. [PMID: 31873880 DOI: 10.1007/s11356-019-07285-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 12/03/2019] [Indexed: 06/10/2023]
Abstract
Acid rain is a global environmental issue due to inhibiting severely plant growth and productivity. To discover the tolerant mechanism in plants under acid rain stress, we studied the difference in response of two crops (rice and soybean) to simulated acid rain (pH 5.0 ~ 2.5) at growth and physiological, biochemical and molecular levels during exposure and recovery periods by hydroponics. By analyzing the change in relative growth rate, chlorophyll content and plasma permeability in rice and soybean, we found that rice could tolerate acid rain above pH 3.0 whereas soybean could tolerate acid rain above pH 4.5. By RT-PCR analyses, immunoprecipitation and enzyme kinetics study, we observed that pH 4.5 acid rain promoted the transcriptional expression of H+-ATPase genes and the phosphorylation of H+-ATPase and increased H+-ATPase activity in the two crops for resisting acid stress. The increased degree in soybean was larger than that in rice. Acid rain at pH 3.0 still promoted the transcription regulation to maintain H+-ATPase activity higher in rice for resisting stress but caused irreversible inhibition on express of H+-ATPase and decreased H+-ATPase activity in soybean. All results suggest that the different tolerance in rice and soybean to acid rain stress could be associated with difference in plasma membrane H+-ATPase at transcriptional regulation, post-translational modification and the substrate affinity.
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Affiliation(s)
- Chanjuan Liang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China.
- Jiangsu Cooperative Innovation Center of Technology and Material of Water Treatment, Jiangnan University, Wuxi, 214122, China.
| | - Yongjia Ma
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China
| | - Lingrui Li
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China
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He M, Ding NZ. Plant Unsaturated Fatty Acids: Multiple Roles in Stress Response. FRONTIERS IN PLANT SCIENCE 2020; 11:562785. [PMID: 33013981 PMCID: PMC7500430 DOI: 10.3389/fpls.2020.562785] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Accepted: 08/19/2020] [Indexed: 05/21/2023]
Abstract
Land plants are exposed to not only biotic stresses such as pathogen infection and herbivore wounding, but abiotic stresses such as cold, heat, drought, and salt. Elaborate strategies have been developed to avoid or abide the adverse effects, with unsaturated fatty acids (UFAs) emerging as general defenders. In higher plants, the most common UFAs are three 18-carbon species, namely, oleic (18:1), linoleic (18:2), and α-linolenic (18:3) acids. These simple compounds act as ingredients and modulators of cellular membranes in glycerolipids, reserve of carbon and energy in triacylglycerol, stocks of extracellular barrier constituents (e.g., cutin and suberin), precursors of various bioactive molecules (e.g., jasmonates and nitroalkenes), and regulators of stress signaling. Nevertheless, they are also potential inducers of oxidative stress. In this review, we will present an overview of these roles and then shed light on genetic engineering of FA synthetic genes for improving plant/crop stress tolerance.
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Chen Y, Lin H, Zhang S, Sun J, Lin Y, Wang H, Lin M, Shi J. Phomopsis longanae Chi-Induced Disease Development and Pericarp Browning of Harvested Longan Fruit in Association With Energy Metabolism. Front Microbiol 2018; 9:1454. [PMID: 30018608 PMCID: PMC6037842 DOI: 10.3389/fmicb.2018.01454] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Accepted: 06/11/2018] [Indexed: 12/30/2022] Open
Abstract
Longan fruit is a popular subtropical fruit with a relatively short shelf life at room temperature mainly due to pericarp browning and fungal infection. This study aimed to investigate the infection of Phomopsis longanae Chi in longan fruit and its effects on the storability and shelf life of longan fruit. The relationship between the energy metabolism of harvested longan fruit and disease development and pericarp browning was elucidated. Results show that P. longanae-inoculation accelerated the deterioration of longan fruit and caused pericarp browning. It also led to the energy deficit in pericarp of longan fruit, which was reflected as lower contents of ATP and ADP, higher AMP content, and lower energy charge as compared to the control samples. Additionally, P. longanae-infection reduced the activities of H+-ATPase, Ca2+-ATPase, and Mg2+-ATPase in plasma, vacuolar, and mitochondrial membranes during the storage period. The results demonstrate that P. longanae-infection led to disease development and pericarp browning in harvested longan fruit, which were due to the infection-induced energy deficit and low ATPase activity that caused disorders of ion transport and distribution, and damaged the structure and function of vacuole, mitochondria, and eventually the whole cells of fruit tissues.
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Affiliation(s)
- Yihui Chen
- Institute of Postharvest Technology of Agricultural Products, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Hetong Lin
- Institute of Postharvest Technology of Agricultural Products, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Shen Zhang
- Institute of Postharvest Technology of Agricultural Products, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Junzheng Sun
- Institute of Postharvest Technology of Agricultural Products, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yifen Lin
- Institute of Postharvest Technology of Agricultural Products, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Hui Wang
- Institute of Postharvest Technology of Agricultural Products, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Mengshi Lin
- Food Science Program, Division of Food System and Bioengineering, University of Missouri, Columbia, MO, United States
| | - John Shi
- Guelph Food Research Center, Agriculture and Agri-Food Canada, Guelph, ON, Canada
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Hydrogen peroxide-induced pericarp browning of harvested longan fruit in association with energy metabolism. Food Chem 2016; 225:31-36. [PMID: 28193430 DOI: 10.1016/j.foodchem.2016.12.088] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 12/20/2016] [Accepted: 12/22/2016] [Indexed: 01/01/2023]
Abstract
Energy metabolism of "Fuyan" longan fruit treated with hydrogen peroxide (H2O2), the most stable of the reactive oxygen, and its relationship to pericarp browning were investigated in this work. The results displayed that H2O2 significantly decreased contents of adenosine triphosphate (ATP) and adenosine diphosphate (ADP). It also inhibited activities of H+-ATPase, Ca2+-ATPase and Mg2+-ATPase in membranes of plasma, vacuole and mitochondria during the early-storage and mid-storage (except for mitochondrial membrane Mg2+-ATPase). These results gave convincing evidence that the treatment of H2O2 accelerating pericarp browning in harvested longans was due to a decrease of ATPase activity and available ATP content. This might break the ion homeostasis and the integrity of mitochondria, which might reduce energy charge and destroy the function and compartmentalization of cell membrane. These together aggravated browning incidence in pericarp of harvested longan fruit.
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Morales-Cedillo F, González-Solís A, Gutiérrez-Angoa L, Cano-Ramírez DL, Gavilanes-Ruiz M. Plant lipid environment and membrane enzymes: the case of the plasma membrane H+-ATPase. PLANT CELL REPORTS 2015; 34:617-29. [PMID: 25577330 DOI: 10.1007/s00299-014-1735-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Revised: 12/18/2014] [Accepted: 12/29/2014] [Indexed: 05/06/2023]
Abstract
Several lipid classes constitute the universal matrix of the biological membranes. With their amphipathic nature, lipids not only build the continuous barrier that confers identity to every cell and organelle, but they are also active actors that modulate the activity of the proteins immersed in the lipid bilayer. The plasma membrane H(+)-ATPase, an enzyme from plant cells, is an excellent example of a transmembrane protein whose activity is influenced by the hydrophilic compartments at both sides of the membrane and by the hydrophobic domains of the lipid bilayer. As a result, an extensive documentation of the effect of numerous amphiphiles in the enzyme activity can be found. Detergents, membrane glycerolipids, and sterols can produce activation or inhibition of the enzyme activity. In some cases, these effects are associated with the lipids of the membrane bulk, but in others, a direct interaction of the lipid with the protein is involved. This review gives an account of reports related to the action of the membrane lipids on the H(+)-ATPase activity.
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Affiliation(s)
- Francisco Morales-Cedillo
- Dpto. de Bioquímica, Facultad de Química, Conj. E. Universidad Nacional Autónoma de México, UNAM. Cd. Universitaria, Coyoacán, 04510, Mexico, D.F., Mexico
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Liu A, Chen S, Chang R, Liu D, Chen H, Ahammed GJ, Lin X, He C. Arbuscular mycorrhizae improve low temperature tolerance in cucumber via alterations in H2O2 accumulation and ATPase activity. JOURNAL OF PLANT RESEARCH 2014; 127:775-785. [PMID: 25160659 DOI: 10.1007/s10265-014-0657-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Accepted: 06/25/2014] [Indexed: 06/03/2023]
Abstract
The combined effects of arbuscular mycorrhizal fungi (AMF) and low temperature (LT) on cucumber plants were investigated with respect to biomass production, H2O2 accumulation, NADPH oxidase, ATPase activity and related gene expression. Mycorrhizal colonization ratio was gradually increased after AMF-inoculation. However, LT significantly decreased mycorrhizal colonization ability and mycorrhizal dependency. Regardless of temperature, the total fresh and dry mass, and root activity of AMF-inoculated plants were significantly higher than that of the non-AMF control. The H2O2 accumulation in AMF-inoculated roots was decreased by 42.44% compared with the control under LT. H2O2 predominantly accumulated on the cell walls of apoplast but was hardly detectable in the cytosol or organelles of roots. Again, NADPH oxidase activity involved in H2O2 production was significantly reduced by AMF inoculation under LT. AMF-inoculation remarkably increased the activities of P-type H(+)-ATPase, P-Ca(2+)-ATPase, V-type H(+)-ATPase, total ATPase activity, ATP concentration and plasma membrane protein content in the roots under LT. Additionally, ATP concentration and expression of plasma membrane ATPase genes were increased by AMF-inoculation. These results indicate that NADPH oxidase and ATPase might play an important role in AMF-mediated tolerance to chilling stress, thereby maintaining a lower H2O2 accumulation in the roots of cucumber.
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Affiliation(s)
- Airong Liu
- College of Forestry, Henan University of Science and Technology, Luoyang, 471003, People's Republic of China
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Vázquez MN, Guerrero YR, González LM, Noval WTDL. Brassinosteroids and Plant Responses to Heavy Metal Stress. An Overview. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/ojmetal.2013.32a1005] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Abstract
While accumulating evidence indicates that P4-ATPases catalyze phospholipid transport across cellular bilayers, their kinship to cation-pumping ATPases has raised fundamental questions concerning the underlying flippase mechanism. Loss of P4-ATPase function perturbs vesicle formation in late secretory and endocytic compartments. An intriguing concept is that P4-ATPases help drive vesicle budding by generating imbalances in transbilayer lipid numbers. Moreover, activation of P4-ATPases by phosphoinositides and other effectors of coat recruitment provide a potential mechanism to confine flippase activity to sites of vesicle biogenesis. These developments have raised considerable interest in understanding the mechanism, regulation and biological implications of P4-ATPase-catalyzed phospholipid transport.
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Affiliation(s)
- Rosa L López-Marqués
- Center for Membrane Pumps in Cells and Disease-PUMPKIN, Danish National Research Foundation, Department of Plant Biology and Biotechnology, Faculty of Life Sciences, University of Copenhagen, Frederiksberg C, Copenhagen, Denmark
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16
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Sánchez-Nieto S, Enríquez-Arredondo C, Guzmán-Chávez F, Hernández-Muñoz R, Ramírez J, Gavilanes-Ruíz M. Kinetics of the H+-ATPase from dry and 5-hours-imbibed maize embryos in its native, solubilized, and reconstituted forms. MOLECULAR PLANT 2011; 4:505-515. [PMID: 21367847 DOI: 10.1093/mp/ssr010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Membranes undergo recovery upon rehydration in seed germination. Previous work has described that the plasma membrane H+-ATPase from maize embryos adopts two different forms at 0 and 5 h of imbibition. We investigated how the kinetics of these two forms could be affected by alterations in the plasma membrane (PM). In comparison to the 0-h, PMs from the 5-h imbibed embryos showed changes in glycerophospholipid composition, decrease in leakage, and increase in fluidity. Kinetics of the PM H+-ATPase from 0 and 5-h imbibed embryos showed negative cooperativity. With the removal of the membrane environment, the activity of the enzymes shifted to a more complex kinetics, displaying two enzyme components. Lipid reconstitution produced one component with positive cooperativity. In all cases, enzymes from 0 and 5-h imbibed embryos presented similar kinetics with some quantitative differences. These results indicate that the two enzyme forms have the potential ability to respond to changes in the membrane environment, but the fact that they do not show differences in the native membranes at 0 or 5 h implies that modifications in the membrane are not drastic enough to alter their kinetics, or that they are able to preserve their boundary lipids or associated proteins and thus retain the same kinetic behavior.
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Affiliation(s)
- Sobeida Sánchez-Nieto
- Departamento de Bioquímica, Facultad de Química, Conjunto E. Universidad Nacional Autónoma de México, Cd Universitaria, 04360 México, DF México
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17
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Wakeel A, Sümer A, Hanstein S, Yan F, Schubert S. In vitro effect of different Na+/K+ ratios on plasma membrane H+ -ATPase activity in maize and sugar beet shoot. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2011; 49:341-5. [PMID: 21282062 DOI: 10.1016/j.plaphy.2011.01.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2010] [Revised: 12/03/2010] [Accepted: 11/05/2011] [Indexed: 05/07/2023]
Abstract
Plant growth is impaired primarily by osmotic stress in the first phase of salt stress, whereas Na+ toxicity affects the plant growth mainly in the second phase. Salinity leads to increased Na+/K+ ratio and thus displacement of K+ by Na+ in the plant cell. Relatively higher cytosolic Na+ concentrations may have an effect on the activity of plasma membrane (PM) H+ -ATPase. A decreased PM-H+ -ATPase activity could increase the apoplastic pH. This process could limit the cell-wall extensibility and thus reduce growth according to the acid growth theory. To compare the effect of Na+ on PM H+ -ATPase activity in salt-sensitive maize (Zea mays L.) and salt-resistant sugar beet (Beta vulgaris L.) shoot, PM vesicles were isolated from growing shoots of both species and ATPase activity was determined by assaying the P(i) released by hydrolysis of ATP. The H+ pumping activity was measured as the quenching of acridine-orange absorbance. An increased Na+/K+ ratio decreased the PM H+ -ATPase activity in vesicles of maize as well as of sugar beet shoots. Nevertheless, the detrimental effect of increased Na+/K+ ratio was more severe in salt-sensitive maize compared to salt-resistant sugar beet. At 25 mM Na+ concentration, hydrolytic activity was not affected in sugar beet. However, a significant decrease in hydrolytic activity was observed in maize at pH 7. In maize and sugar beet, reduction in active H+ flux was 20% and 5% at 25 mM Na+ concentration in the assay, respectively. The active H+ flux was decreased to 80% and 60%, when 100 mM K+ were substituted by 100mM Na+. We conclude that PM H+ -ATPases of salt-resistant sugar beet and maize shoot are sensitive to higher concentration of Na+. However, sugar beet PM-H+ -ATPases are relatively efficient and may have constitutive resistance against lower concentration (25 mM) of Na+ as compared to that of salt-sensitive maize.
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Affiliation(s)
- Abdul Wakeel
- Institute of Plant Nutrition, Justus Liebig University, Heinrich-Buff-Ring 26-32, Giessen, Germany.
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18
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N-terminal chimaeras with signal sequences enhance the functional expression and alter the subcellular localization of heterologous membrane-bound inorganic pyrophosphatases in yeast. Biochem J 2010; 426:147-57. [PMID: 20025609 DOI: 10.1042/bj20091491] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Expression of heterologous multispanning membrane proteins in Saccharomyces cerevisiae is a difficult task. Quite often, the use of multicopy plasmids where the foreign gene is under the control of a strong promoter does not guarantee efficient production of the corresponding protein. In the present study, we show that the expression level and/or subcellular localization in S. cerevisiae of a heterologous type of multispanning membrane protein, the proton-translocating inorganic pyrophosphatase (H+-PPase), can be changed by fusing it with various suitable N-terminal signal sequences. Chimaeric proteins were constructed by adding the putative N-terminal extra domain of Trypanosoma cruzi H+-PPase or the bona fide signal sequence of S. cerevisiae invertase Suc2p to H+-PPase polypeptides of different organisms (from bacteria to plants) and expressed in a yeast conditional mutant deficient in its cytosolic PPi hydrolysis activity when grown on glucose. Chimaeric constructs not only substantially enhanced H+-PPase expression levels in transformed mutant cells, but also allowed functional complementation in those cases in which native H+-PPase failed to accomplish it. Activity assays and Western blot analyses demonstrated further the occurrence of most H+-PPase in internal membrane fractions of these cells. The addition of N-terminal signal sequences to the vacuolar H+-PPase AVP1 from the plant Arabidopsis thaliana, a protein efficiently expressed in yeast in its natural form, alters the subcellular distribution of the chimaeras, suggesting further progression along the secretory sorting pathways, as shown by density gradient ultracentrifugation and in vivo fluorescence microscopy of the corresponding GFP (green fluorescent protein)-H+-PPase fusion proteins.
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Liu Y, Liu H, Pan Q, Yang H, Zhan J, Huang W. The plasma membrane H+-ATPase is related to the development of salicylic acid-induced thermotolerance in pea leaves. PLANTA 2009; 229:1087-98. [PMID: 19225806 DOI: 10.1007/s00425-009-0897-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2008] [Accepted: 01/26/2009] [Indexed: 05/15/2023]
Abstract
The plasma membrane H(+)-ATPase (PM H(+)-ATPase, EC.3.6.1.35) plays a key role in the plant response to environmental stress. In this study, a possible mechanistic link between the PM H(+)-ATPase and salicylic acid (SA)-induced thermotolerance was investigated in pea (Pisum sativum L. cv. NingXia) leaves. The burst of free SA in response to heat acclimation (38 +/- 0.5 degrees C) was observed, and peaks appeared subsequently both in activity and amount of PM H(+)-ATPase in pea leaves during heat acclimation. Similarly, exogenous SA also triggered the two peaks in the room temperature (25 +/- 0.5 degrees C). Paclobutrazol (PAC) was employed to infiltrate onto pea leaves prior to heat acclimation treatment. The results showed that the peaks of both free SA and activity of PM H(+)-ATPase still occurred after the PAC pretreatment. In acquired thermotolerance assessment (malondialdehyde content and degree of wilting), spraying SA and fusicoccin (FC, the activator of PM H(+)-ATPase) separately could protect pea leaves from heat injury. Results from RT-PCR and western blotting analysis indicated that the increase in activity of the PM H(+)-ATPase was due to its transcriptional and translational regulation. The subcellular localizations of PM H(+)-ATPase after the FC or SA pretreatment also showed that the PM H(+)-ATPase is important to maintain the integrity of plasma membrane against the heat stress. Taken together, these results suggest PM H(+)-ATPase is related to the development of SA-induced thermotolerance in pea leaves.
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Affiliation(s)
- Yanyan Liu
- College of Food Science and Nutritional Engineering, China Agricultural University, No.17, Qinghua Dong Lu, Haidian District, 100083 Beijing, China
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Minami A, Fujiwara M, Furuto A, Fukao Y, Yamashita T, Kamo M, Kawamura Y, Uemura M. Alterations in detergent-resistant plasma membrane microdomains in Arabidopsis thaliana during cold acclimation. PLANT & CELL PHYSIOLOGY 2009; 50:341-59. [PMID: 19106119 DOI: 10.1093/pcp/pcn202] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Microdomains in the plasma membrane (PM) have been proposed to be involved in many important cellular events in plant cells. To understand the role of PM microdomains in plant cold acclimation, we isolated the microdomains as detergent-resistant plasma membrane fractions (DRMs) from Arabidopsis seedlings and compared lipid and protein compositions before and after cold acclimation. The DRM was enriched in sterols and glucocerebrosides, and the proportion of free sterols in the DRM increased after cold acclimation. The protein-to-lipid ratio in the DRM was greater than that in the total PM fraction. The protein amount recovered in DRMs decreased gradually during cold acclimation. Cold acclimation further resulted in quantitative changes in DRM protein profiles. Subsequent mass spectrometry and Western blot analyses revealed that P-type H(+)-ATPases, aquaporins and endocytosis-related proteins increased and, conversely, tubulins, actins and V-type H(+)-ATPase subunits decreased in DRMs during cold acclimation. Functional categorization of cold-responsive proteins in DRMs suggests that plant PM microdomains function as platforms of membrane transport, membrane trafficking and cytoskeleton interaction. These comprehensive changes in microdomains may be associated with cold acclimation of Arabidopsis.
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Shen H, Chen J, Wang Z, Yang C, Sasaki T, Yamamoto Y, Matsumoto H, Yan X. Root plasma membrane H+-ATPase is involved in the adaptation of soybean to phosphorus starvation. JOURNAL OF EXPERIMENTAL BOTANY 2006; 57:1353-62. [PMID: 16547127 DOI: 10.1093/jxb/erj111] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
The plasma membrane H+-ATPase plays an important role in the plant response to nutrient and environmental stresses. However, the involvement of plant root plasma membrane H+-ATPase in adaptation to phosphate (P) starvation is not yet fully elucidated. In this study, experiments were performed with soybean roots in low-P nutrient solution (10 microM). Treatment with fusicoccin, an activator of the plasma membrane H+-ATPase, increased P uptake by 35%, while vanadate, an inhibitor of plasma membrane H+-ATPase, severely suppressed it. These results suggested that P uptake might be regulated via the modulation of the activity of plasma membrane H+-ATPase under P starvation. The relationship between P uptake and the activity of plasma membrane H+-ATPase was examined further by using plasma membrane H+-ATPase transgenic Arabidopsis thaliana under low-P conditions. Transgenic plants absorbed more P compared with wild-type Arabidopsis. Results from real-time RT-PCR, western-blotting and immunolocalization analysis indicated that the increase in activity of the plasma membrane H+-ATPase by P starvation was caused by its transcriptional and translational regulation. A higher expression was observed at the translational level than at the transcriptional level. P starvation could induce a transient increase of endogenous indole-3-acetic acid (IAA) in soybean roots. The exogenous application of IAA stimulated the activity of plasma membrane H+-ATPase and P uptake, while naphthylphthalamic acid (NPA), an IAA transport inhibitor, blocked IAA effects. Taken together, these results suggested an involvement of root plasma membrane H+-ATPase in the adaptation of soybean to P starvation. IAA might be involved in signal transduction of P starvation by activating the plasma membrane H+-ATPase in soybean roots.
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Affiliation(s)
- Hong Shen
- Laboratory of Plant Nutritional Genetics and Root Biology Center, College of Resources and Environment, South China Agricultural University, Guangzhou 510642, PR China
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Zhang Z, Ramirez J, Reboutier D, Brault M, Trouverie J, Pennarun AM, Amiar Z, Biligui B, Galagovsky L, Rona JP. Brassinosteroids regulate plasma membrane anion channels in addition to proton pumps during expansion of Arabidopsis thaliana cells. PLANT & CELL PHYSIOLOGY 2005; 46:1494-504. [PMID: 16020430 DOI: 10.1093/pcp/pci162] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Brassinosteroids (BRs) are involved in numerous physiological processes associated with plant development and especially with cell expansion. Here we report that two BRs, 28-homobrassinolide (HBL) and its direct precursor 28-homocastasterone (HCS), promote cell expansion of Arabidopsis thaliana suspension cells. We also show that cell expansions induced by HBL and HCS are correlated with the amplitude of the plasma membrane hyperpolarization they elicited. HBL, which promoted the larger cell expansion, also provoked the larger hyperpolarization. We observed that membrane hyperpolarization and cell expansion were partially inhibited by the proton pump inhibitor erythrosin B, suggesting that proton pumps were not the only ion transport system modulated by the two BRs. We used a voltage clamp approach in order to find the other ion transport systems involved in the PM hyperpolarization elicited by HBL and HCS. Interestingly, while anion currents were inhibited by both HBL and HCS, outward rectifying K+ currents were increased by HBL but inhibited by HCS. The different electrophysiological behavior shown by HBL and HCS indicates that small changes in the BR skeleton might be responsible for changes in bioactivity.
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Affiliation(s)
- Zongshen Zhang
- Laboratoire d'Electrophysiologie des Membranes, EA 3514, Université Paris 7, 2 Place Jussieu, 75251 Paris Cedex 05, France
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