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Tytuł:
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H 2 O 2 priming promotes salt tolerance in maize by protecting chloroplasts ultrastructure and primary metabolites modulation.
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Autorzy:
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Dos Santos Araújo G; Department of Biochemistry and Molecular Biology, Federal University of Ceará, Brazil. Electronic address: .
de Oliveira Paula-Marinho S; Department of Biochemistry and Molecular Biology, Federal University of Ceará, Brazil. Electronic address: .
de Paiva Pinheiro SK; Department of Metallurgical and Materials Engineering and Analytical Center, Federal University of Ceará, Fortaleza, Brazil. Electronic address: .
de Castro Miguel E; Department of Metallurgical and Materials Engineering and Analytical Center, Federal University of Ceará, Fortaleza, Brazil. Electronic address: .
de Sousa Lopes L; Department of Biochemistry and Molecular Biology, Federal University of Ceará, Brazil. Electronic address: .
Camelo Marques E; Department of Biochemistry and Molecular Biology, Federal University of Ceará, Brazil. Electronic address: .
de Carvalho HH; Department of Biochemistry and Molecular Biology, Federal University of Ceará, Brazil. Electronic address: .
Gomes-Filho E; Department of Biochemistry and Molecular Biology and National Institute of Science and Technology in Salinity (INCTSal/CNPq), Federal University of Ceará, Pici Campus St., 60455-760, Fortaleza, CE, Brazil. Electronic address: .
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Źródło:
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Plant science : an international journal of experimental plant biology [Plant Sci] 2021 Feb; Vol. 303, pp. 110774. Date of Electronic Publication: 2020 Nov 28.
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Typ publikacji:
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Journal Article
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Język:
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English
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Imprint Name(s):
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Publication: <2010>- : Shannon, Co. Clare : Elsevier Ireland
Original Publication: Shannon [Clare] : Elsevier Scientific Publishers Ireland Ltd., c1985-
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MeSH Terms:
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Chloroplasts/*drug effects
Hydrogen Peroxide/*pharmacology
Zea mays/*metabolism
Chlorophyll A/metabolism ; Chloroplasts/metabolism ; Chloroplasts/ultrastructure ; Metabolomics ; Microscopy, Electron, Transmission ; Osmotic Pressure ; Phosphoenolpyruvate Carboxylase/metabolism ; Photosynthesis ; Reactive Oxygen Species/metabolism ; Salt Tolerance ; Zea mays/drug effects ; Zea mays/physiology
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Contributed Indexing:
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Keywords: Acclimation; Metabolomic; Photosynthesis; Salt stress; Zea mays
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Substance Nomenclature:
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0 (Reactive Oxygen Species)
BBX060AN9V (Hydrogen Peroxide)
EC 4.1.1.31 (Phosphoenolpyruvate Carboxylase)
YF5Q9EJC8Y (Chlorophyll A)
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Entry Date(s):
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Date Created: 20210125 Date Completed: 20210505 Latest Revision: 20210505
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Update Code:
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20240105
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DOI:
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10.1016/j.plantsci.2020.110774
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PMID:
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33487358
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Hydrogen peroxide priming has emerged as a powerful strategy to trigger multiple responses involved in plant acclimation that reinforce tolerance to abiotic stresses, including salt stress. Thus, this study aimed to investigate the impact of foliar H 2 O 2 priming on the physiological, biochemical, and ultrastructural traits related to photosynthesis of salt-stressed plants. Besides, we provided comparative leaf metabolomic profiles of Zea mays plants under such conditions. For this, H 2 O or H 2 O 2 pretreated plants were grown under saline conditions for 12-days. Salinity drastically affected photosynthetic parameters and structural chloroplasts integrity, also increased reactive oxygen species contents promoting disturbance in the plant metabolism when compared to non-saline conditions. Our results suggest that H 2 O 2 -pretreated plants improved photosynthetic performance avoiding salinity-induced energy excess and ultrastructural damage by preserving stacking thylakoids. It displayed modulation of some metabolites, as arabitol, glucose, asparagine, and tyrosine, which may contribute to the maintenance of osmotic balance and reduced oxidative stress. Hence, our study brings new insights into an understanding of plant acclimation to salinity by H 2 O 2 priming based on photosynthesis maintenance and metabolite modulation.
(Copyright © 2020 Elsevier B.V. All rights reserved.)
