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Rob MM, Akhter D, Islam T, Bhattacharjya DK, Shoaib Khan MS, Islam F, Chen J. Copper stress in rice: Perception, signaling, bioremediation and future prospects. JOURNAL OF PLANT PHYSIOLOGY 2024; 302:154314. [PMID: 39033671 DOI: 10.1016/j.jplph.2024.154314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 07/10/2024] [Accepted: 07/12/2024] [Indexed: 07/23/2024]
Abstract
Copper (Cu) is an indispensable micronutrient for plants, animals, and microorganisms and plays a vital role in different physiological processes. However, excessive Cu accumulation in agricultural soil, often through anthropogenic action, poses a potential risk to plant health and crop productivity. This review article provided a comprehensive overview of the available information regarding Cu dynamics in agricultural soils, major sources of Cu contamination, factors influencing its mobility and bioavailability, and mechanisms of Cu uptake and translocation in rice plants. This review examined the impact of Cu toxicity on the germination, growth, and photosynthesis of rice plants. It also highlighted molecular mechanisms underlying Cu stress signaling and the plant defense strategy, involving chelation, compartmentalization, and antioxidant responses. This review also identified significant areas that need further research, such as Cu uptake mechanism in rice, Cu signaling process, and the assessment of Cu-polluted paddy soil and rice toxicity under diverse environmental conditions. The development of rice varieties with reduced Cu accumulation through comprehensive breeding programs is also necessary. Regulatory measures, fungicide management, plant selection, soil and environmental investigation are recommended to prevent Cu buildup in agricultural lands to achieve sustainable agricultural goals.
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Affiliation(s)
- Md Mahfuzur Rob
- Department of Horticulture, Faculty of Agriculture, Sylhet Agricultural University, Sylhe, 3100, Bangladesh
| | - Delara Akhter
- Department of Genetics and Plant Breeding, Sylhet Agricultural University, Sylhet, 3100, Bangladesh
| | - Tariqul Islam
- Department of Agricultural Construction and Environmental Engineering, Sylhet Agricultural University, Sylhet, 3100, Bangladesh
| | - Debu Kumar Bhattacharjya
- Department of Biochemistry, Sher-e-Bangla Agricultural University, Sherebangla Nagar, Dhaka, 1207, Bangladesh
| | | | - Faisal Islam
- International Genome Center, Jiangsu University, Zhenjiang, 212013, China.
| | - Jian Chen
- International Genome Center, Jiangsu University, Zhenjiang, 212013, China.
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2
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Zboińska M, Romero LC, Gotor C, Kabała K. Regulation of V-ATPase by Jasmonic Acid: Possible Role of Persulfidation. Int J Mol Sci 2023; 24:13896. [PMID: 37762199 PMCID: PMC10531226 DOI: 10.3390/ijms241813896] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 08/30/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023] Open
Abstract
Vacuolar H+-translocating ATPase (V-ATPase) is a proton pump crucial for plant growth and survival. For this reason, its activity is tightly regulated, and various factors, such as signaling molecules and phytohormones, may be involved in this process. The aim of this study was to explain the role of jasmonic acid (JA) in the signaling pathways responsible for the regulation of V-ATPase in cucumber roots and its relationship with other regulators of this pump, i.e., H2S and H2O2. We analyzed several aspects of the JA action on the enzyme, including transcriptional regulation, modulation of protein levels, and persulfidation of selected V-ATPase subunits as an oxidative posttranslational modification induced by H2S. Our results indicated that JA functions as a repressor of V-ATPase, and its action is related to a decrease in the protein amount of the A and B subunits, the induction of oxidative stress, and the downregulation of the E subunit persulfidation. We suggest that both H2S and H2O2 may be downstream components of JA-dependent negative proton pump regulation. The comparison of signaling pathways induced by two negative regulators of the pump, JA and cadmium, revealed that multiple pathways are involved in the V-ATPase downregulation in cucumber roots.
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Affiliation(s)
- Magdalena Zboińska
- Department of Plant Molecular Physiology, Faculty of Biological Sciences, University of Wrocław, Kanonia 6/8, 50-328 Wrocław, Poland;
- Instituto de Bioquímica Vegetal y Fotosíntesis, Consejo Superior de Investigaciones Científicas, Universidad de Sevilla, C. Américo Vespucio, 49, 41092 Sevilla, Spain; (L.C.R.); (C.G.)
| | - Luis C. Romero
- Instituto de Bioquímica Vegetal y Fotosíntesis, Consejo Superior de Investigaciones Científicas, Universidad de Sevilla, C. Américo Vespucio, 49, 41092 Sevilla, Spain; (L.C.R.); (C.G.)
| | - Cecilia Gotor
- Instituto de Bioquímica Vegetal y Fotosíntesis, Consejo Superior de Investigaciones Científicas, Universidad de Sevilla, C. Américo Vespucio, 49, 41092 Sevilla, Spain; (L.C.R.); (C.G.)
| | - Katarzyna Kabała
- Department of Plant Molecular Physiology, Faculty of Biological Sciences, University of Wrocław, Kanonia 6/8, 50-328 Wrocław, Poland;
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Sebők-Nagy K, Blastyák A, Juhász G, Páli T. Reversible binding of divalent cations to Ductin protein assemblies-A putative new regulatory mechanism of membrane traffic processes. Front Mol Biosci 2023; 10:1195010. [PMID: 37228584 PMCID: PMC10203432 DOI: 10.3389/fmolb.2023.1195010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 04/24/2023] [Indexed: 05/27/2023] Open
Abstract
Ductins are a family of homologous and structurally similar membrane proteins with 2 or 4 trans-membrane alpha-helices. The active forms of the Ductins are membranous ring- or star-shaped oligomeric assemblies and they provide various pore, channel, gap-junction functions, assist in membrane fusion processes and also serve as the rotor c-ring domain of V-and F-ATPases. All functions of the Ductins have been reported to be sensitive to the presence of certain divalent metal cations (Me2+), most frequently Cu2+ or Ca2+ ions, for most of the better known members of the family, and the mechanism of this effect is not yet known. Given that we have earlier found a prominent Me2+ binding site in a well-characterised Ductin protein, we hypothesise that certain divalent cations can structurally modulate the various functions of Ductin assemblies via affecting their stability by reversible non-covalent binding to them. A fine control of the stability of the assembly ranging from separated monomers through a loosely/weakly to tightly/strongly assembled ring might render precise regulation of Ductin functions possible. The putative role of direct binding of Me2+ to the c-ring subunit of active ATP hydrolase in autophagy and the mechanism of Ca2+-dependent formation of the mitochondrial permeability transition pore are also discussed.
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Affiliation(s)
- Krisztina Sebők-Nagy
- Institute of Biophysics, Biological Research Centre, Eötvös Loránd Research Network, Szeged, Hungary
| | - András Blastyák
- Institute of Genetics, Biological Research Centre, Eötvös Loránd Research Network, Szeged, Hungary
| | - Gábor Juhász
- Institute of Genetics, Biological Research Centre, Eötvös Loránd Research Network, Szeged, Hungary
| | - Tibor Páli
- Institute of Biophysics, Biological Research Centre, Eötvös Loránd Research Network, Szeged, Hungary
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Wdowikowska A, Reda M, Kabała K, Chohura P, Jurga A, Janiak K, Janicka M. Water and Nutrient Recovery for Cucumber Hydroponic Cultivation in Simultaneous Biological Treatment of Urine and Grey Water. PLANTS (BASEL, SWITZERLAND) 2023; 12:1286. [PMID: 36986974 PMCID: PMC10053017 DOI: 10.3390/plants12061286] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/07/2023] [Accepted: 03/10/2023] [Indexed: 06/19/2023]
Abstract
Water and nutrient deficiencies in soil are becoming a serious threat to crop production. Therefore, usable water and nutrient recovery from wastewater, such as urine and grey water, should be considered. In this work, we showed the possibility of using grey water and urine after processing in an aerobic reactor with activated sludge in which the nitrification process takes place. The resulting liquid (nitrified urine and grey water, NUG) contains three potential factors that can adversely affect plant growth in a hydroponic system: anionic surfactants, nutrient deficits, and salinity. After dilution and supplementation with small amounts of macro- and micro-elements, NUG was suitable for cucumber cultivation. Plant growth on this modified medium (enriched nitrified urine and grey water, NUGE) was similar to that of plants cultivated on Hoagland solution (HS) and reference commercial fertilizer (RCF). The modified medium (NUGE) contained a significant amount of sodium (Na) ions. Therefore, typical effects of salt stress were observed in cucumber plants, including reduced chlorophyll levels, slightly weaker photosynthesis parameters, increased H2O2 levels, lipid peroxidation, ascorbate peroxidase (APX) activity, and proline content in the leaves. In addition, reduced protein levels were observed in plants treated with recycled medium. At the same time, lower nitrate content in tissues was found, which may have resulted from their intensive use by nitrate reductase (NR), the activity of which significantly increased. Although cucumber is a glycophyte, it grew very well in this recycled medium. Interestingly, salt stress and possibly anionic surfactants promoted flower formation, which in turn could positively affect plant yield.
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Affiliation(s)
- Anna Wdowikowska
- Department of Plant Molecular Physiology, Faculty of Biological Sciences, University of Wrocław, Kanonia 6/8, 50-328 Wrocław, Poland
| | - Małgorzata Reda
- Department of Plant Molecular Physiology, Faculty of Biological Sciences, University of Wrocław, Kanonia 6/8, 50-328 Wrocław, Poland
| | - Katarzyna Kabała
- Department of Plant Molecular Physiology, Faculty of Biological Sciences, University of Wrocław, Kanonia 6/8, 50-328 Wrocław, Poland
| | - Piotr Chohura
- Faculty of Life Science and Technology, Wroclaw University of Environmental and Life Sciences, St. C. K. Norwida 27, 50-375 Wroclaw, Poland
| | - Anna Jurga
- Faculty of Environmental Engineering, Wroclaw University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland
| | - Kamil Janiak
- Faculty of Environmental Engineering, Wroclaw University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland
- Wroclaw Municipal Water and Sewage Company, Na Grobli 19, 50-421 Wroclaw, Poland
| | - Małgorzata Janicka
- Department of Plant Molecular Physiology, Faculty of Biological Sciences, University of Wrocław, Kanonia 6/8, 50-328 Wrocław, Poland
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Structural and Functional Diversity of Two ATP-Driven Plant Proton Pumps. Int J Mol Sci 2023; 24:ijms24054512. [PMID: 36901943 PMCID: PMC10003446 DOI: 10.3390/ijms24054512] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 02/09/2023] [Accepted: 02/22/2023] [Indexed: 03/02/2023] Open
Abstract
Two ATP-dependent proton pumps function in plant cells. Plasma membrane H+-ATPase (PM H+-ATPase) transfers protons from the cytoplasm to the apoplast, while vacuolar H+-ATPase (V-ATPase), located in tonoplasts and other endomembranes, is responsible for proton pumping into the organelle lumen. Both enzymes belong to two different families of proteins and, therefore, differ significantly in their structure and mechanism of action. The plasma membrane H+-ATPase is a member of the P-ATPases that undergo conformational changes, associated with two distinct E1 and E2 states, and autophosphorylation during the catalytic cycle. The vacuolar H+-ATPase represents rotary enzymes functioning as a molecular motor. The plant V-ATPase consists of thirteen different subunits organized into two subcomplexes, the peripheral V1 and the membrane-embedded V0, in which the stator and rotor parts have been distinguished. In contrast, the plant plasma membrane proton pump is a functional single polypeptide chain. However, when the enzyme is active, it transforms into a large twelve-protein complex of six H+-ATPase molecules and six 14-3-3 proteins. Despite these differences, both proton pumps can be regulated by the same mechanisms (such as reversible phosphorylation) and, in some processes, such as cytosolic pH regulation, may act in a coordinated way.
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6
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He Y, Wang Q, Li J, Li Z. Comparative proteomic profiling in Chinese shrimp Fenneropenaeus chinensis under low pH stress. FISH & SHELLFISH IMMUNOLOGY 2022; 120:526-535. [PMID: 34953999 DOI: 10.1016/j.fsi.2021.12.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 12/06/2021] [Accepted: 12/20/2021] [Indexed: 06/14/2023]
Abstract
Lower pH gives rise to a harmful stress to crustacean. Here, we analyzed the proteomic response of Fenneropenaeus chinensis from control pH (pH value 8.2) and low pH (pH value 6.5) - treated groups by employing absolute quantitation-based quantitative proteomic (iTRAQ) analysis. Among the identified proteins, a total of 76 proteins differed in their abundance levels, including 45 upregulated and 31 downregulated proteins. The up-regulation of proteins like citrate synthase, cytochrome c oxidase, V-type proton ATPase, glyceraldehyde-3-phosphate dehydrogenase and fructose 1,6-bisphosphate-aldolase as well as the enrichment of the DEPs in multiple metabolic processes and pathways illustrated that increased energy and substrates metabolism was essential for F. chinensis to counteract low pH stress. Ion transporting related proteins, such as Na+/K+/2Cl- cotransporter and calmodulin, participated in the homeostatic maintenance of pH in F. chinensis. There were significant downregulation expressions of lectin, lipopolysaccharide- and beta-1,3-glucan binding protein, chitinase, cathepsin L and beta-glucuronidase, which indicating the immune dysfunction of F. chinensis when exposure to low pH condition. These findings can extend our understanding on the defensive mechanisms of the low pH stress and accelerate the breeding process of low pH tolerance in F. chinensis.
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Affiliation(s)
- Yuying He
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, 266071, PR China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology, Qingdao, 266200, PR China
| | - Qiong Wang
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, 266071, PR China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology, Qingdao, 266200, PR China
| | - Jian Li
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, 266071, PR China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology, Qingdao, 266200, PR China
| | - Zhaoxia Li
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266237, PR China.
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Wang C, Xiang Y, Qian D. Current progress in plant V-ATPase: From biochemical properties to physiological functions. JOURNAL OF PLANT PHYSIOLOGY 2021; 266:153525. [PMID: 34560396 DOI: 10.1016/j.jplph.2021.153525] [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: 08/01/2021] [Revised: 09/12/2021] [Accepted: 09/12/2021] [Indexed: 06/13/2023]
Abstract
Vacuolar-type adenosine triphosphatase (V-ATPase, VHA) is a highly conserved, ATP-driven multisubunit proton pump that is widely distributed in all eukaryotic cells. V-ATPase consists of two domains formed by at least 13 different subunits, the membrane peripheral V1 domain responsible for ATP hydrolysis, and the membrane-integral V0 domain responsible for proton translocation. V-ATPase plays an essential role in energizing secondary active transport and is indispensable to plants. In addition to multiple stress responses, plant V-ATPase is also implicated in physiological processes such as growth, development, and morphogenesis. Based on the identification of distinct V-ATPase mutants and advances in luminal pH measurements in vivo, it has been revealed that this holoenzyme complex plays a pivotal role in pH homeostasis of the plant endomembrane system and endocytic and secretory trafficking. Here, we review recent progress in comprehending the biochemical properties and physiological functions of plant V-ATPase and explore the topics that require further elucidation.
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Affiliation(s)
- Chao Wang
- MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Yun Xiang
- MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Dong Qian
- MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China.
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8
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Khoudi H. Significance of vacuolar proton pumps and metal/H + antiporters in plant heavy metal tolerance. PHYSIOLOGIA PLANTARUM 2021; 173:384-393. [PMID: 33937997 DOI: 10.1111/ppl.13447] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 04/16/2021] [Accepted: 04/29/2021] [Indexed: 06/12/2023]
Abstract
Soil and water are among the most valuable resources on earth. Unfortunately, their contamination with heavy metals has become a global problem. Heavy metals are not biodegradable and cannot be chemically degraded; therefore, they tend to accumulate in soils or to be transported by streaming water and contaminate both surface and groundwater. Cadmium (Cd) has no known biological function but is one of the most toxic metals. It represents a serious environmental concern since its accumulation in soils is associated with health risks to plants, animals and humans. On the other hand, copper (Cu) and zinc (Zn) are heavy metals that are indispensable to plants but become toxic when their concentration in soils exceeds a certain optimal level. Plants have evolved many mechanisms to cope with heavy metal toxicity; vacuolar sequestration is one of them. Vacuolar sequestration can be achieved through either phytochelatin-dependent or phytochelatin-independent pathways. Most of the transgenic plants meant for phytoremediation described in the literature result from the manipulation of genes involved in the phytochelatin-dependent pathway. However, recent evidence has emerged to support the importance of the phytochelatin-independent pathway in heavy metal sequestration into the vacuole, with metal/H+ antiporters and proton pumps playing an important role. In this review, the importance of vacuolar proton pumps and metal/H+ antiporters transporting Cd, Cu, and Zn is discussed. In addition, the recent advances in the production of transgenic plants with potential application in phytoremediation and food safety through the manipulation of genes encoding V-PPase proton pumps is described.
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Affiliation(s)
- Habib Khoudi
- Laboratory of Plant Biotechnology and Improvement, Center of Biotechnology of Sfax (CBS), University of Sfax, Sfax, Tunisia
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9
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Wang P, Guo Y, Wang Y, Gao C. Vacuolar membrane H +-ATPase c`` subunit gene (ThVHAc``1) from Tamarix hispida Willd improves salt stress tolerance. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 157:370-378. [PMID: 33190056 DOI: 10.1016/j.plaphy.2020.10.039] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 10/29/2020] [Indexed: 05/15/2023]
Abstract
The plant vacuolar H+-ATPase (V-ATPase) is a multisubunit complex. In addition to performing basic housekeeping functions, this complex is also involved in abiotic stress resistance in plants. In this study, a V-ATPase c`` subunit gene (ThVHAc``1) from Tamarix hispida Willd was cloned with a 534-bp ORF. Sequence analysis showed that the ThVHAc``1 protein contains four transmembrane helices and lacks a signal peptide. qRT-PCR results showed that ThVHAc``1 was primarily induced by treatments of NaCl, NaHCO3, PEG6000, CdCl2 or ABA in roots, stems and leaves of T. hispida. The expression pattern of ThVHAc``1 was significantly different from that of ThVHAc1 (a V-ATPase c subunit in T. hispida). Furthermore, the cell survival rates and density (OD600) results showed that the transgenic yeast overexpressing ThVHAc``1 exhibited increased tolerance to the above-mentioned abiotic stresses. In addition, the overexpression of ThVHAc``1 confers salt tolerance to transgenic Arabidopsis plants by improving the ROS content and decreasing the accumulation of O2- and H2O2. Similarly, the homologous transformation of the ThVHAc``1 gene into T. hispida also improved salt tolerance. Our results suggest that the ThVHAc``1 gene plays an important role in plant stress tolerance.
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Affiliation(s)
- Peilong Wang
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin, 150040, China
| | - Yucong Guo
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin, 150040, China
| | - Yuanyuan Wang
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin, 150040, China
| | - Caiqiu Gao
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin, 150040, China.
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Yang J, Zhang T, Li J, Wu N, Wu G, Yang J, Chen X, He L, Chen J. Chinese wheat mosaic virus-derived vsiRNA-20 can regulate virus infection in wheat through inhibition of vacuolar- (H + )-PPase induced cell death. THE NEW PHYTOLOGIST 2020; 226:205-220. [PMID: 31815302 PMCID: PMC7065157 DOI: 10.1111/nph.16358] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 11/22/2019] [Indexed: 05/18/2023]
Abstract
Vacuolar (H+ )-PPases (VPs), are key regulators of active proton (H+ ) transport across membranes using the energy generated from PPi hydrolysis. The VPs also play vital roles in plant responses to various abiotic stresses. Their functions in plant responses to pathogen infections are unknown. Here, we show that TaVP, a VP of wheat (Triticum aestivum) is important for wheat resistance to Chinese wheat mosaic virus (CWMV) infection. Furthermore, overexpression of TaVP in plants induces the activity of PPi hydrolysis, leading to plants cell death. A virus-derived small interfering RNA (vsiRNA-20) generated from CWMV RNA1 can regulate the mRNA accumulation of TaVP in wheat. The accumulation of vsiRNA-20 can suppress cell death induced by TaVP in a dosage-dependent manner. Moreover, we show that the accumulation of vsiRNA-20 can affect PPi hydrolysis and the concentration of H+ in CWMV-infected wheat cells to create a more favorable cellular environment for CWMV replication. We propose that vsiRNA-20 regulates TaVP expression to prevent cell death and to maintain a weak alkaline environment in cytoplasm to enhance CWMV infection in wheat. This finding may be used as a novel strategy to minimize virus pathogenicity and to develop new antiviral stratagems.
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Affiliation(s)
- Jian Yang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of AgroproductsKey Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang ProvinceInstitute of Plant VirologyNingbo UniversityNingbo315211China
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease ControlZhejiang Provincial Key Laboratory of Plant VirologyInstitute of Virology and BiotechnologyZhejiang Academy of Agricultural SciencesHangzhou310021China
| | - Tianye Zhang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of AgroproductsKey Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang ProvinceInstitute of Plant VirologyNingbo UniversityNingbo315211China
- School of Forestry and BiotechnologyZhejiang Agriculture and Forestry UniversityHangzhou310021China
| | - Juan Li
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of AgroproductsKey Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang ProvinceInstitute of Plant VirologyNingbo UniversityNingbo315211China
| | - Ne Wu
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease ControlZhejiang Provincial Key Laboratory of Plant VirologyInstitute of Virology and BiotechnologyZhejiang Academy of Agricultural SciencesHangzhou310021China
- School of Forestry and BiotechnologyZhejiang Agriculture and Forestry UniversityHangzhou310021China
| | - Guanwei Wu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of AgroproductsKey Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang ProvinceInstitute of Plant VirologyNingbo UniversityNingbo315211China
| | - Jin Yang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of AgroproductsKey Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang ProvinceInstitute of Plant VirologyNingbo UniversityNingbo315211China
| | - Xuan Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of AgroproductsKey Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang ProvinceInstitute of Plant VirologyNingbo UniversityNingbo315211China
| | - Long He
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of AgroproductsKey Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang ProvinceInstitute of Plant VirologyNingbo UniversityNingbo315211China
| | - Jianping Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of AgroproductsKey Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang ProvinceInstitute of Plant VirologyNingbo UniversityNingbo315211China
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease ControlZhejiang Provincial Key Laboratory of Plant VirologyInstitute of Virology and BiotechnologyZhejiang Academy of Agricultural SciencesHangzhou310021China
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Gouiaa S, Khoudi H. Expression of V-PPase proton pump, singly or in combination with a NHX1 transporter, in transgenic tobacco improves copper tolerance and accumulation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:37037-37045. [PMID: 31745765 DOI: 10.1007/s11356-019-06852-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 10/22/2019] [Indexed: 05/27/2023]
Abstract
One of the most important strategies evolved by plants to tolerate heavy metals (HMs) is their sequestration into the vacuole. Recent studies have demonstrated that Cu sequestration into vacuole is dependent on the electrochemical gradient generated by vacuolar proton pumps: the V-H+-PPase and the V-H+-ATPase. In a previous study, we demonstrated that co-expression of V-H+-PPase and a sodium/proton antiporter genes, isolated from wheat, in transgenic tobacco plants significantly increases both H+ pumping activity of the endogenous V-H+-ATPase and V-H+-PPase compared to wild-type (WT) plants, all grown in the absence of stress. In the present study, we evaluated the effect of expression, in tobacco, of vacuolar proton pump, TaVP1, singly or in combination with sodium/proton antiporter, TaNHXS1, on copper (Cu) tolerance and accumulation. Results showed that, when subjected to Cu stress, TaVP1 single transgenic tobacco lines exhibited a more robust root system, greater biomass production, less chlorophyll loss, lower MDA and H2O2 production, and higher catalase activity and accumulated more Cu than did WT. Interestingly, double transgenic tobacco lines exhibited the best Cu tolerance and accumulation than either of the single TaVP1 transgenic lines or WT plants, when subjected to excess Cu. In fact, double transgenic lines accumulated 2.5-fold and 1.9-fold more Cu than did WT and single TaVP1 lines, respectively. Thus, these results clearly demonstrate the usefulness of expression of vacuolar proton pump alone or in combination with sodium/proton antiporter as novel strategy for Cu phytoremediation.
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Affiliation(s)
- Sandra Gouiaa
- Laboratory of Plant Biotechnology and Improvement, University of Sfax, Center of Biotechnology of Sfax, Route Sidi Mansour, Km 6 B.P' 1177, 3018, Sfax, Tunisia
| | - Habib Khoudi
- Laboratory of Plant Biotechnology and Improvement, University of Sfax, Center of Biotechnology of Sfax, Route Sidi Mansour, Km 6 B.P' 1177, 3018, Sfax, Tunisia.
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Jiang Z, Jin F, Shan X, Li Y. iTRAQ-Based Proteomic Analysis Reveals Several Strategies to Cope with Drought Stress in Maize Seedlings. Int J Mol Sci 2019; 20:ijms20235956. [PMID: 31779286 PMCID: PMC6928945 DOI: 10.3390/ijms20235956] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Revised: 11/19/2019] [Accepted: 11/25/2019] [Indexed: 12/11/2022] Open
Abstract
Drought stress, especially during the seedling stage, seriously limits the growth of maize and reduces production in the northeast of China. To investigate the molecular mechanisms of drought response in maize seedlings, proteome changes were analyzed. Using an isotopic tagging relative quantitation (iTRAQ) based method, a total of 207 differentially accumulated protein species (DAPS) were identified under drought stress in maize seedlings. The DAPS were classified into ten essential groups and analyzed thoroughly, which involved in signaling, osmotic regulation, protein synthesis and turnover, reactive oxygen species (ROS) scavenging, membrane trafficking, transcription related, cell structure and cell cycle, fatty acid metabolism, carbohydrate and energy metabolism, as well as photosynthesis and photorespiration. The enhancements of ROS scavenging, osmotic regulation, protein turnover, membrane trafficking, and photosynthesis may play important roles in improving drought tolerance of maize seedlings. Besides, the inhibitions of some protein synthesis and slowdown of cell division could reduce the growth rate and avoid excessive water loss, which is possible to be the main reasons for enhancing drought avoidance of maize seedlings. The incongruence between protein and transcript levels was expectedly observed in the process of confirming iTRAQ data by quantitative real-time polymerase chain reaction (qRT-PCR) analysis, which further indicated that the multiplex post-transcriptional regulation and post-translational modification occurred in drought-stressed maize seedlings. Finally, a hypothetical strategy was proposed that maize seedlings coped with drought stress by improving drought tolerance (via. promoting osmotic adjustment and antioxidant capacity) and enhancing drought avoidance (via. reducing water loss). Our study provides valuable insight to mechanisms underlying drought response in maize seedlings.
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Affiliation(s)
- Zhilei Jiang
- Institute of Agricultural Biotechnology, Jilin Academy of Agricultural Sciences/Jilin Provincial Key Laboratory of Agricultural Biotechnology, Changchun 130033, China; (Z.J.); (F.J.)
| | - Fengxue Jin
- Institute of Agricultural Biotechnology, Jilin Academy of Agricultural Sciences/Jilin Provincial Key Laboratory of Agricultural Biotechnology, Changchun 130033, China; (Z.J.); (F.J.)
| | - Xiaohui Shan
- College of Plant Science, Jilin University, Changchun 130062, China
- Correspondence: (X.S.); (Y.L.)
| | - Yidan Li
- Institute of Agricultural Biotechnology, Jilin Academy of Agricultural Sciences/Jilin Provincial Key Laboratory of Agricultural Biotechnology, Changchun 130033, China; (Z.J.); (F.J.)
- Correspondence: (X.S.); (Y.L.)
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13
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Kabała K, Zboińska M, Głowiak D, Reda M, Jakubowska D, Janicka M. Interaction between the signaling molecules hydrogen sulfide and hydrogen peroxide and their role in vacuolar H + -ATPase regulation in cadmium-stressed cucumber roots. PHYSIOLOGIA PLANTARUM 2019; 166:688-704. [PMID: 30120777 DOI: 10.1111/ppl.12819] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 08/10/2018] [Accepted: 08/15/2018] [Indexed: 05/12/2023]
Abstract
Vacuolar H+ -ATPase (V-ATPase; EC 3.6.3.14) is the main enzyme responsible for generating a proton gradient across the tonoplast. Under cadmium (Cd) stress conditions, V-ATPase activity is inhibited. In the present work, hydrogen sulfide (H2 S) and hydrogen peroxide (H2 O2 ) cross-talk was analyzed in cucumber (Cucumis sativus L.) seedlings exposed to Cd to explain the role of both signaling molecules in the control of V-ATPase. V-ATPase activity and gene expression as well as H2 S and H2 O2 content and endogenous production were determined in roots of plants treated with 100 μM CdCl2 and different inhibitors or scavengers. It was found that H2 S donor improved photosynthetic parameters in Cd-stressed cucumber seedlings. Cd-induced stimulation of H2 S level was correlated with the increased activities of the H2 S-generating desulfhydrases. Increased H2 O2 and lowered H2 S contents in roots were able to reduce V-ATPase activities similar to Cd. H2 O2 and H2 S-induced modulations in V-ATPase activities were not closely related to the transcript level of encoding genes, suggesting posttranslational modifications of enzyme protein. On the other hand, exogenous H2 O2 raised H2 S content in root tissues independently from the desulfhydrase activity. Although treatment of control plants with H2 S significantly stimulated NADPH oxidase activity and gene expression, H2 S did not affect H2 O2 accumulation in roots exposed to Cd. The results suggest the existence of two pathways of H2 S generation in Cd-stressed cucumber roots. One involves desulfhydrase activity, as was previously demonstrated in different plant species. The other, the desulfhydrase-independent pathway induced by H2 O2 /NADPH oxidase, may protect V-ATPase from inhibition by Cd.
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Affiliation(s)
- Katarzyna Kabała
- Department of Plant Molecular Physiology, Institute of Experimental Biology, University of Wrocław, 50-328, Wrocław, Poland
| | - Magdalena Zboińska
- Department of Plant Molecular Physiology, Institute of Experimental Biology, University of Wrocław, 50-328, Wrocław, Poland
| | - Dorota Głowiak
- Department of Plant Molecular Physiology, Institute of Experimental Biology, University of Wrocław, 50-328, Wrocław, Poland
| | - Małgorzata Reda
- Department of Plant Molecular Physiology, Institute of Experimental Biology, University of Wrocław, 50-328, Wrocław, Poland
| | - Dagmara Jakubowska
- Department of Plant Molecular Physiology, Institute of Experimental Biology, University of Wrocław, 50-328, Wrocław, Poland
| | - Małgorzata Janicka
- Department of Plant Molecular Physiology, Institute of Experimental Biology, University of Wrocław, 50-328, Wrocław, Poland
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Xu Z, Ge Y, Zhang W, Zhao Y, Yang G. The walnut JrVHAG1 gene is involved in cadmium stress response through ABA-signal pathway and MYB transcription regulation. BMC PLANT BIOLOGY 2018; 18:19. [PMID: 29357825 PMCID: PMC5778664 DOI: 10.1186/s12870-018-1231-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 01/11/2018] [Indexed: 05/04/2023]
Abstract
BACKGROUND Vacuolar H+-ATPase (V-ATPase) is a vital protein complex involved in abiotic stress response in plants. The G subunit of Juglans regia (JrVHAG1) was previously identified as a drought tolerance-related gene involved in the ABA (abscisic acid)-signal pathway. Heavy metal stress is becoming a major detriment for plant growth, development, and production. In order to understand the role of JrVHAG1, the potential function mechanism of JrVHAG1 exposed to CdCl2 stress was confirmed in this study. RESULTS Transcription of JrVHAG1 was induced by ABA and increased to 58.89-fold (roots) and 7.38-fold (leaves) and by CdCl2 to 2.65- (roots) and 11.42-fold (leaves) relative to control, respectively. Moreover, when treated simultaneously with ABA and CdCl2 (ABA+CdCl2), JrVHAG1 was up-regulated to 110.13- as well as 165.42-fold relative to control in the roots and leaves, accordingly. Compared to the wild type (WT) Arabidopsis plants, the transgenic plants with overexpression of JrVHAG1 (G2, G6, and G9) exhibited increased seed germination rate, biomass accumulation, proline content, and activities of superoxide dismutase (SOD) and peroxidase (POD) under ABA, CdCl2, and ABA+CdCl2 treatments. In contrast, the reactive oxygen species (ROS) staining, malondialdehyde (MDA) content, hydrogen dioxide (H2O2) content, as well as electrolyte leakage (EL) rates of transgenic seedlings were all lower than those of WT exposed to ABA, CdCl2 and ABA+CdCl2 stresses. Furthermore, a 1200 bp promoter fragment of JrVHAG1 was isolated by analyzing the genome of J. regia, in which the cis-elements were identified. This JrVHAG1 promoter fragment showed expression activity that was enhanced significantly when subjected to the above treatments. Yeast one-hybrid assay and transient expression analysis demonstrated that JrMYB2 specifically bound to the MYBCORE motif and shared similar expression patterns with JrVHAG1 under ABA, CdCl2 and ABA+CdCl2 stress conditions. CONCLUSIONS Our results suggested that the JrVHAG1 gene functions as a CdCl2 stress response regulator by participating in ABA-signal pathway and MYB transcription regulation network. JrVHAG1 gene is a useful candidate gene for heavy metal stress tolerance in plant molecular breeding.
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Affiliation(s)
- Zhenggang Xu
- Hunan Research Center of Engineering Technology for Utilization of Environmental and Resources Plant, Central South University of Forestry and Technology, 498 Shaoshan South Road, Changsha, Hunan Province 410004 China
- School of Material and Chemical Engineering, Hunan City University, 518 Yingbin Road, Yiyang, Hunan Province 413000 China
| | - Yu Ge
- College of Forestry, Hubei University for Nationalities, 39 Xueyuan Road, Enshi, Hubei 445000 China
| | - Wan Zhang
- Hunan Research Center of Engineering Technology for Utilization of Environmental and Resources Plant, Central South University of Forestry and Technology, 498 Shaoshan South Road, Changsha, Hunan Province 410004 China
| | - Yunlin Zhao
- Hunan Research Center of Engineering Technology for Utilization of Environmental and Resources Plant, Central South University of Forestry and Technology, 498 Shaoshan South Road, Changsha, Hunan Province 410004 China
| | - Guiyan Yang
- Laboratory of Walnut Research Center, College of Forestry, Northwest A & F University, Yangling, Shaanxi 712100 China
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15
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Vera-Estrella R, Gómez-Méndez MF, Amezcua-Romero JC, Barkla BJ, Rosas-Santiago P, Pantoja O. Cadmium and zinc activate adaptive mechanisms in Nicotiana tabacum similar to those observed in metal tolerant plants. PLANTA 2017; 246:433-451. [PMID: 28455771 DOI: 10.1007/s00425-017-2700-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Accepted: 04/22/2017] [Indexed: 06/07/2023]
Abstract
MAIN CONCLUSION Tobacco germinated and grew in the presence of high concentrations of cadmium and zinc without toxic symptoms. Evidence suggests that these ions are sequestered into the vacuole by heavy metal/H + exchanger mechanisms. Heavy metal hyperaccumulation and hypertolerance are traits shared by a small set of plants which show specialized physiological and molecular adaptations allowing them to accumulate and sequester toxic metal ions. Nicotiana tabacum was used to test its potential as a metal-accumulator in a glass house experiment. Seed germination was not affected in the presence of increasing concentrations of zinc and cadmium. Juvenile and adult plants could concentrate CdCl2 and ZnSO4 to levels exceeding those in the hydroponic growth medium and maintained or increased their leaf dry weight when treated with 0.5- or 1-mM CdCl2 or 1-mM ZnSO4 for 5 days. Accumulation of heavy metals did not affect the chlorophyll and carotenoid levels, while variable effects were observed in cell sap osmolarity. Heavy metal-dependent H+ transport across the vacuole membrane was monitored using quinacrine fluorescence quenching. Cadmium- or zinc-dependent fluorescence recovery revealed that increasing concentrations of heavy metals stimulated the activities of the tonoplast Cd2+ or Zn2+/H+ exchangers. Immunodetection of the V-ATPase subunits showed that the increased proton transport by zinc was not due to changes in protein amount. MTP1 and MTP4 immunodetection and semiquantitative RT-PCR of NtMTP1, NtNRAMP1, and NtZIP1 helped to identify the genes that are likely involved in sequestration of cadmium and zinc in the leaf and root tissue. Finally, we demonstrated that cadmium and zinc treatments induced an accumulation of zinc in leaf tissues. This study shows that N. tabacum possesses a hyperaccumulation response, and thus could be used for phytoremediation purposes.
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Affiliation(s)
- Rosario Vera-Estrella
- Instituto de Biotecnología, UNAM, A.P. 510-3, Colonia Miraval, 62250, Cuernavaca, Morelos, Mexico.
| | - María F Gómez-Méndez
- Instituto de Biotecnología, UNAM, A.P. 510-3, Colonia Miraval, 62250, Cuernavaca, Morelos, Mexico
| | - Julio C Amezcua-Romero
- Instituto de Biotecnología, UNAM, A.P. 510-3, Colonia Miraval, 62250, Cuernavaca, Morelos, Mexico
- Escuela Nacional de Estudios Superiores, Unidad León, UNAM, Blvd. UNAM 2011, Comunidad de los Tepetates, 37684, León, Guanajuato, Mexico
| | - Bronwyn J Barkla
- Southern Cross Plant Science, Southern Cross University, Lismore, NSW, 2480, Australia
| | - Paul Rosas-Santiago
- Instituto de Biotecnología, UNAM, A.P. 510-3, Colonia Miraval, 62250, Cuernavaca, Morelos, Mexico
| | - Omar Pantoja
- Instituto de Biotecnología, UNAM, A.P. 510-3, Colonia Miraval, 62250, Cuernavaca, Morelos, Mexico
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16
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Sharma SS, Yamamoto K, Hamaji K, Ohnishi M, Anegawa A, Sharma S, Thakur S, Kumar V, Uemura T, Nakano A, Mimura T. Cadmium-induced changes in vacuolar aspects of Arabidopsis thaliana. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2017; 114:29-37. [PMID: 28257948 DOI: 10.1016/j.plaphy.2017.02.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2016] [Revised: 02/20/2017] [Accepted: 02/21/2017] [Indexed: 06/06/2023]
Abstract
We have examined the changes due to Cd treatment in the vacuolar form in root tip cortical cells in Arabidopsis thaliana employing a transformant with GFP fused to a tonoplast protein. A Cd-induced enhancement in complexity with general expansion of vacuolar system within 24 h was evident. The changes in the vacuolar form were dependent on the applied Cd concentrations. Concomitantly, as revealed through dithizone staining, Cd accumulated in the seedling roots exhibiting abundance of Cd-dithizone complexes in root tip, root hairs and vasculature. To get insight into the involvement of SNARE protein-mediated vesicle fusion in Cd detoxification, the magnitude of Cd toxicity in a couple of knock out mutants of the vacuolar Qa-SNARE protein VAM3/SYP22 was compared with that in the wild type. The Cd toxicity appeared to be comparable in the mutants and the wild type. In order to analyze the Cd effects at cellular level, we treated the Arabidopsis suspension-cultured cells with Cd. Cd, however, did not induce a change in the vacuolar form in suspension-cultured cells although Cd measured with ICP-MS was obviously taken up into the cell. The V-ATPase activity in the microsomal fractions from vacuoles isolated from A. thaliana suspension cultured cells remained unaffected by Cd. Changes in the levels of certain metabolites of Cd-treated cells were also not so distinct except for those of glutathione. The significance of findings is discussed.
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Affiliation(s)
- Shanti S Sharma
- Department of Biosciences, Himachal Pradesh University, Shimla 171005, India
| | - Kotaro Yamamoto
- Department of Biology, Graduate School of Science, Kobe University, Nada-ku, Kobe, 657-8501 Japan
| | - Kohei Hamaji
- Department of Biology, Graduate School of Science, Kobe University, Nada-ku, Kobe, 657-8501 Japan
| | - Miwa Ohnishi
- Department of Biology, Graduate School of Science, Kobe University, Nada-ku, Kobe, 657-8501 Japan
| | - Aya Anegawa
- Department of Biology, Graduate School of Science, Kobe University, Nada-ku, Kobe, 657-8501 Japan; Agilent Technologies Japan. Ltd., Hachioji, Tokyo 192-8510, Japan
| | - Shashi Sharma
- Department of Biosciences, Himachal Pradesh University, Shimla 171005, India
| | - Sveta Thakur
- Department of Biosciences, Himachal Pradesh University, Shimla 171005, India
| | - Vijay Kumar
- Department of Biosciences, Himachal Pradesh University, Shimla 171005, India
| | - Tomohiro Uemura
- Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-0033 Japan
| | - Akihiko Nakano
- Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-0033 Japan; Live Cell Super-resolution Imaging Research Team, RIKEN Center for Advanced Photonics, Wako, Saitama 351-0198, Japan
| | - Tetsuro Mimura
- Department of Biology, Graduate School of Science, Kobe University, Nada-ku, Kobe, 657-8501 Japan.
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17
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Bai J, Qin Y, Liu J, Wang Y, Sa R, Zhang N, Jia R. Proteomic response of oat leaves to long-term salinity stress. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:3387-3399. [PMID: 27866362 DOI: 10.1007/s11356-016-8092-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 11/11/2016] [Indexed: 05/23/2023]
Abstract
Salinity adversely affects plant growth and production. Oat is a moderately salt-tolerant crop and can contribute to improving saline soil. The physiological and molecular responses of the oat plant to long-term salinity were studied. After a 16-day salt treatment (150 mmol L-1NaCl in Hoagland's solution), photosynthetic rate, maximum photosystem II photochemical efficiency, and actual efficiency of photosystem II decreased. The activities of superoxide dismutase, peroxidase, and catalase significantly increased. We also investigated the protein profiles of oat leaves in response to salinity and detected 30 reproducible protein spots by two-dimensional gel electrophoresis that were differentially abundant. Specifically, one protein was up-regulated and 29 proteins were down-regulated compared with the control. These 29 proteins were identified using MALDI-TOF mass spectrometry, and 19 corresponding genes were further investigated by quantitative real-time PCR. These proteins were involved in four types of biological processes: photosynthesis, carbohydrate metabolism and energy, protein biosynthesis, and folding and detoxification. This study indicates that the lower levels of Calvin cycle-related proteins, 50S ribosomal protein L10 and adenosine-triphosphate regulation-related proteins, and the high levels of antioxidant enzymes play important roles in the response of oat to long-term salinity stress.
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Affiliation(s)
- Jianhui Bai
- Institute of Grassland Research of Chinese Academy of Agricultural Sciences, Hohhot, 010010, People's Republic of China
- Science Innovation Team of Oats, Inner Mongolia Agricultural University, Hohhot, 010019, People's Republic of China
| | - Yan Qin
- Institute of Grassland Research of Chinese Academy of Agricultural Sciences, Hohhot, 010010, People's Republic of China
| | - Jinghui Liu
- Science Innovation Team of Oats, Inner Mongolia Agricultural University, Hohhot, 010019, People's Republic of China.
| | - Yuqing Wang
- Institute of Grassland Research of Chinese Academy of Agricultural Sciences, Hohhot, 010010, People's Republic of China.
| | - Rula Sa
- Science Innovation Team of Oats, Inner Mongolia Agricultural University, Hohhot, 010019, People's Republic of China
| | - Na Zhang
- Science Innovation Team of Oats, Inner Mongolia Agricultural University, Hohhot, 010019, People's Republic of China
| | - Ruizong Jia
- Hawaii Agriculture Research Center, Kunia, HI, 96759, USA
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18
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Sun T, Xu L, Sun H, Yue Q, Zhai H, Yao Y. VvVHP1; 2 Is Transcriptionally Activated by VvMYBA1 and Promotes Anthocyanin Accumulation of Grape Berry Skins via Glucose Signal. FRONTIERS IN PLANT SCIENCE 2017; 8:1811. [PMID: 29104582 PMCID: PMC5655013 DOI: 10.3389/fpls.2017.01811] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 10/05/2017] [Indexed: 05/14/2023]
Abstract
In this work, four vacuolar H+-PPase (VHP) genes were identified in the grape genome. Among them, VvVHP1; 2 was strongly expressed in berry skin and its expression exhibited high correlations to anthocyanin content of berry skin during berry ripening and under ABA and UVB treatments. VvVHP1; 2 was transcriptionally activated directly by VvMYBA1, and VvVHP1; 2 overexpression promoted anthocyanin accumulation in berry skins and Arabidopsis leaves; therefore, VvVHP1; 2 mediated VvMYBA1-regulated berry pigmentation. On the other hand, RNA-Seq analysis of WT and transgenic berry skins revealed that carbohydrate metabolism, flavonoid metabolism and regulation and solute carrier family expression were the most clearly altered biological processes. Further experiments elucidated that VvVHP1; 2 overexpression up-regulated the expression of the genes related to anthocyanin biosynthesis and transport via hexokinase-mediated glucose signal and thereby promoted anthocyanin accumulation in berry skins and Arabidopsis leaves. Additionally, modifications of sugar status caused by enhanced hexokinase activities likely play a key role in VvVHP1; 2-induced sugar signaling.
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19
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Wang X, Cai X, Xu C, Wang Q, Dai S. Drought-Responsive Mechanisms in Plant Leaves Revealed by Proteomics. Int J Mol Sci 2016; 17:E1706. [PMID: 27763546 PMCID: PMC5085738 DOI: 10.3390/ijms17101706] [Citation(s) in RCA: 126] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 09/06/2016] [Accepted: 09/22/2016] [Indexed: 02/04/2023] Open
Abstract
Plant drought tolerance is a complex trait that requires a global view to understand its underlying mechanism. The proteomic aspects of plant drought response have been extensively investigated in model plants, crops and wood plants. In this review, we summarize recent proteomic studies on drought response in leaves to reveal the common and specialized drought-responsive mechanisms in different plants. Although drought-responsive proteins exhibit various patterns depending on plant species, genotypes and stress intensity, proteomic analyses show that dominant changes occurred in sensing and signal transduction, reactive oxygen species scavenging, osmotic regulation, gene expression, protein synthesis/turnover, cell structure modulation, as well as carbohydrate and energy metabolism. In combination with physiological and molecular results, proteomic studies in leaves have helped to discover some potential proteins and/or metabolic pathways for drought tolerance. These findings provide new clues for understanding the molecular basis of plant drought tolerance.
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Affiliation(s)
- Xiaoli Wang
- Development Centre of Plant Germplasm Resources, College of Life and Environmental Sciences, Shanghai Normal University, Shanghai 200234, China.
| | - Xiaofeng Cai
- Development Centre of Plant Germplasm Resources, College of Life and Environmental Sciences, Shanghai Normal University, Shanghai 200234, China.
| | - Chenxi Xu
- Development Centre of Plant Germplasm Resources, College of Life and Environmental Sciences, Shanghai Normal University, Shanghai 200234, China.
| | - Quanhua Wang
- Development Centre of Plant Germplasm Resources, College of Life and Environmental Sciences, Shanghai Normal University, Shanghai 200234, China.
| | - Shaojun Dai
- Development Centre of Plant Germplasm Resources, College of Life and Environmental Sciences, Shanghai Normal University, Shanghai 200234, China.
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20
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Sharma SS, Dietz KJ, Mimura T. Vacuolar compartmentalization as indispensable component of heavy metal detoxification in plants. PLANT, CELL & ENVIRONMENT 2016; 39:1112-26. [PMID: 26729300 DOI: 10.1111/pce.12706] [Citation(s) in RCA: 254] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 12/15/2015] [Accepted: 12/22/2015] [Indexed: 05/02/2023]
Abstract
Plant cells orchestrate an array of molecular mechanisms for maintaining plasmatic concentrations of essential heavy metal (HM) ions, for example, iron, zinc and copper, within the optimal functional range. In parallel, concentrations of non-essential HMs and metalloids, for example, cadmium, mercury and arsenic, should be kept below their toxicity threshold levels. Vacuolar compartmentalization is central to HM homeostasis. It depends on two vacuolar pumps (V-ATPase and V-PPase) and a set of tonoplast transporters, which are directly driven by proton motive force, and primary ATP-dependent pumps. While HM non-hyperaccumulator plants largely sequester toxic HMs in root vacuoles, HM hyperaccumulators usually sequester them in leaf cell vacuoles following efficient long-distance translocation. The distinct strategies evolved as a consequence of organ-specific differences particularly in vacuolar transporters and in addition to distinct features in long-distance transport. Recent molecular and functional characterization of tonoplast HM transporters has advanced our understanding of their contribution to HM homeostasis, tolerance and hyperaccumulation. Another important part of the dynamic vacuolar sequestration syndrome involves enhanced vacuolation. It involves vesicular trafficking in HM detoxification. The present review provides an updated account of molecular aspects that contribute to the vacuolar compartmentalization of HMs.
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Affiliation(s)
- Shanti S Sharma
- Department of Biosciences, Himachal Pradesh University, Shimla, 171005, India
| | - Karl-Josef Dietz
- Department of Biochemistry and Physiology of Plants, Faculty of Biology, University of Bielefeld, D-33501, Bielefeld, Germany
| | - Tetsuro Mimura
- Department of Biology, Graduate School of Science, Kobe University, Nada-ku, Kobe, 657-8501, Japan
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21
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Li SJ, Yin XR, Xie XL, Allan AC, Ge H, Shen SL, Chen KS. The Citrus transcription factor, CitERF13, regulates citric acid accumulation via a protein-protein interaction with the vacuolar proton pump, CitVHA-c4. Sci Rep 2016; 6:20151. [PMID: 26837571 PMCID: PMC4738278 DOI: 10.1038/srep20151] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 12/30/2015] [Indexed: 11/09/2022] Open
Abstract
Organic acids are essential to fruit flavor. The vacuolar H(+) transporting adenosine triphosphatase (V-ATPase) plays an important role in organic acid transport and accumulation. However, less is known of V-ATPase interacting proteins and their relationship with organic acid accumulation. The relationship between V-ATPase and citric acid was investigated, using the citrus tangerine varieties 'Ordinary Ponkan (OPK)' and an early maturing mutant 'Zaoshu Ponkan (ZPK)'. Five V-ATPase genes (CitVHA) were predicted as important to citric acid accumulation. Among the genes, CitVHA-c4 was observed, using a yeast two-hybrid screen, to interact at the protein level with an ethylene response factor, CitERF13. This was verified using bimolecular fluorescence complementation assays. A similar interaction was also observed between Arabidopsis AtERF017 (a CitERF13 homolog) and AtVHA-c4 (a CitVHA-c4 homolog). A synergistic effect on citric acid levels was observed between V-ATPase proteins and interacting ERFs when analyzed using transient over-expression in tobacco and Arabidopsis mutants. Furthermore, the transcript abundance of CitERF13 was concomitant with CitVHA-c4. CitERF13 or AtERF017 over-expression leads to significant citric acid accumulation. This accumulation was abolished in an AtVHA-c4 mutant background. ERF-VHA interactions appear to be involved in citric acid accumulation, which was observed in both citrus and Arabidopsis.
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Affiliation(s)
- Shao-jia Li
- College of Agriculture & Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou 310058, P.R. China
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Zijingang Campus, Hangzhou 310058, P.R. China
- The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou 310058, P.R. China
| | - Xue-ren Yin
- College of Agriculture & Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou 310058, P.R. China
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Zijingang Campus, Hangzhou 310058, P.R. China
- The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou 310058, P.R. China
| | - Xiu-lan Xie
- College of Agriculture & Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou 310058, P.R. China
| | - Andrew C. Allan
- New Zealand Institute for Plant & Food Research Limited, Private Bag 92169, Auckland, New Zealand
- School of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - Hang Ge
- College of Agriculture & Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou 310058, P.R. China
| | - Shu-ling Shen
- College of Agriculture & Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou 310058, P.R. China
| | - Kun-song Chen
- College of Agriculture & Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou 310058, P.R. China
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Zijingang Campus, Hangzhou 310058, P.R. China
- The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou 310058, P.R. China
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Rengel Z, Bose J, Chen Q, Tripathi BN. Magnesium alleviates plant toxicity of aluminium and heavy metals. CROP AND PASTURE SCIENCE 2015; 66:1298. [PMID: 0 DOI: 10.1071/cp15284] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Magnesium (Mg) is an essential nutrient that can alleviate soilborne toxicity of many ions. This review paper critically assesses the literature on interactions and mechanisms influencing Mg alleviation of aluminium (Al) and heavy metal toxicity. Hydrated radii of Mg2+ and Al3+ are similar; therefore, these two ions compete for binding to ion transporters and other important biological molecules. In monocotyledonous species such as rice and wheat, millimolar concentrations of Mg alleviate Al toxicity, mainly by decreasing Al saturation and activity at cell wall and plasma membrane binding sites. In dicotyledonous legume species such as soybean (Glycine max), rice bean (Vigna umbellata) and broad bean (Vicia faba), micromolar concentrations of Mg may enhance biosynthesis of organic ligands and thus underpin alleviation of Al toxicity. Resistance to Al may be enhanced by increased expression of the genes coding for Mg transporters, as well as by upregulation of activity of Mg-transport proteins; intracellular Mg2+ activity may thus be increased under Al stress, which may increase the activity of H+-ATPases. In Vicia faba, Mg-related enhancement in the activity of plasma membrane H+-ATPase under Al stress was found to be due to post-translational modification (increased phosphorylation of the penultimate threonine as well as association with regulatory 14-3-3 proteins), resulting in increased resistance to Al stress. Magnesium can alleviate heavy metal stress by decreasing negative electrical potential and thus metal ion activities at the plasma membrane surface (physico-chemical competition), by enhancing activities of enzymes involved in biosynthesis of organic ligands, and by increasing vacuolar sequestration of heavy metals via increasing H+-pumping activity at the tonoplast. Future work should concentrate on characterising the role of intracellular Mg2+ homeostasis and Mg transporters in alleviating metal stress as well as in transcriptional, translational and post-translational regulation of H+-pumps and enzymes involved in biosynthesis and exudation of organic ligands.
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