Foliar applied 24-epibrassinolide alleviates salt stress in rice (Oryza sativa L.) by suppression of ABA levels and upregulation of secondary metabolites

Salt stress hinders plant growth and disrupts many physio-biochemical and molecular processes. The present study evaluated the potential role of foliar applied 24-epibrassinolide (EBR) for mitigating the adverse effects of salinity in rice plants. Our findings showed that salt stress reduced several...

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Autores principales: Raheel Shahzad, Putri Widyanti Harlina, Mohamed Ewas, Pan Zhenyuan, Xinhui Nie, Pedro P. Gallego, Shahid Ullah Khan, Elsayed Nishawy, Aamir Hamid Khan, Haitao Jia
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Publicado: Taylor & Francis Group 2021
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Acceso en línea:https://doaj.org/article/587e5e84cf06447292b4f7f6613a7096
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spelling oai:doaj.org-article:587e5e84cf06447292b4f7f6613a70962021-11-26T11:19:47ZFoliar applied 24-epibrassinolide alleviates salt stress in rice (Oryza sativa L.) by suppression of ABA levels and upregulation of secondary metabolites1742-91451742-915310.1080/17429145.2021.2002444https://doaj.org/article/587e5e84cf06447292b4f7f6613a70962021-01-01T00:00:00Zhttp://dx.doi.org/10.1080/17429145.2021.2002444https://doaj.org/toc/1742-9145https://doaj.org/toc/1742-9153Salt stress hinders plant growth and disrupts many physio-biochemical and molecular processes. The present study evaluated the potential role of foliar applied 24-epibrassinolide (EBR) for mitigating the adverse effects of salinity in rice plants. Our findings showed that salt stress reduced several growth and physiological parameters, and substantially increased oxidative stress in rice seedlings. The foliar application of EBR replenished the negative effects of salt stress by improving plant growth and physiological attributes in rice plants. Moreover, application of EBR substantially reduced oxidative injuries by enhancing antioxidant enzymes and phenolic compounds in rice plants during salt stress. Interestingly, the endogenous ABA levels were declined in stressed plants by EBR treatment, also validated by expression analysis of ABA-related genes. In addition, application of EBR upregulated carotenoids and flavonoids pathway genes, thus showing its function to activate secondary metabolism in rice plants during salt stress. The principal component analysis (PCA) indicated that, under salt stress, the response of EBR-treated rice plants was strongly correlated with the accumulation of phenolic compounds and flavonoids. Collectively, this study presents useful insight into the distinct role of EBR by activating underlying enzymatic and non-enzymatic defense mechanisms to mitigate salinity in rice plants.Raheel ShahzadPutri Widyanti HarlinaMohamed EwasPan ZhenyuanXinhui NiePedro P. GallegoShahid Ullah KhanElsayed NishawyAamir Hamid KhanHaitao JiaTaylor & Francis Grouparticle24-epibrassinoliderice plantsalt tolerancesecondary metabolismphenolic compoundsflavonoidsPlant cultureSB1-1110Plant ecologyQK900-989ENJournal of Plant Interactions, Vol 16, Iss 1, Pp 533-549 (2021)
institution DOAJ
collection DOAJ
language EN
topic 24-epibrassinolide
rice plant
salt tolerance
secondary metabolism
phenolic compounds
flavonoids
Plant culture
SB1-1110
Plant ecology
QK900-989
spellingShingle 24-epibrassinolide
rice plant
salt tolerance
secondary metabolism
phenolic compounds
flavonoids
Plant culture
SB1-1110
Plant ecology
QK900-989
Raheel Shahzad
Putri Widyanti Harlina
Mohamed Ewas
Pan Zhenyuan
Xinhui Nie
Pedro P. Gallego
Shahid Ullah Khan
Elsayed Nishawy
Aamir Hamid Khan
Haitao Jia
Foliar applied 24-epibrassinolide alleviates salt stress in rice (Oryza sativa L.) by suppression of ABA levels and upregulation of secondary metabolites
description Salt stress hinders plant growth and disrupts many physio-biochemical and molecular processes. The present study evaluated the potential role of foliar applied 24-epibrassinolide (EBR) for mitigating the adverse effects of salinity in rice plants. Our findings showed that salt stress reduced several growth and physiological parameters, and substantially increased oxidative stress in rice seedlings. The foliar application of EBR replenished the negative effects of salt stress by improving plant growth and physiological attributes in rice plants. Moreover, application of EBR substantially reduced oxidative injuries by enhancing antioxidant enzymes and phenolic compounds in rice plants during salt stress. Interestingly, the endogenous ABA levels were declined in stressed plants by EBR treatment, also validated by expression analysis of ABA-related genes. In addition, application of EBR upregulated carotenoids and flavonoids pathway genes, thus showing its function to activate secondary metabolism in rice plants during salt stress. The principal component analysis (PCA) indicated that, under salt stress, the response of EBR-treated rice plants was strongly correlated with the accumulation of phenolic compounds and flavonoids. Collectively, this study presents useful insight into the distinct role of EBR by activating underlying enzymatic and non-enzymatic defense mechanisms to mitigate salinity in rice plants.
format article
author Raheel Shahzad
Putri Widyanti Harlina
Mohamed Ewas
Pan Zhenyuan
Xinhui Nie
Pedro P. Gallego
Shahid Ullah Khan
Elsayed Nishawy
Aamir Hamid Khan
Haitao Jia
author_facet Raheel Shahzad
Putri Widyanti Harlina
Mohamed Ewas
Pan Zhenyuan
Xinhui Nie
Pedro P. Gallego
Shahid Ullah Khan
Elsayed Nishawy
Aamir Hamid Khan
Haitao Jia
author_sort Raheel Shahzad
title Foliar applied 24-epibrassinolide alleviates salt stress in rice (Oryza sativa L.) by suppression of ABA levels and upregulation of secondary metabolites
title_short Foliar applied 24-epibrassinolide alleviates salt stress in rice (Oryza sativa L.) by suppression of ABA levels and upregulation of secondary metabolites
title_full Foliar applied 24-epibrassinolide alleviates salt stress in rice (Oryza sativa L.) by suppression of ABA levels and upregulation of secondary metabolites
title_fullStr Foliar applied 24-epibrassinolide alleviates salt stress in rice (Oryza sativa L.) by suppression of ABA levels and upregulation of secondary metabolites
title_full_unstemmed Foliar applied 24-epibrassinolide alleviates salt stress in rice (Oryza sativa L.) by suppression of ABA levels and upregulation of secondary metabolites
title_sort foliar applied 24-epibrassinolide alleviates salt stress in rice (oryza sativa l.) by suppression of aba levels and upregulation of secondary metabolites
publisher Taylor & Francis Group
publishDate 2021
url https://doaj.org/article/587e5e84cf06447292b4f7f6613a7096
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