Ethylene and hydrogen peroxide are involved in brassinosteroid-induced salt tolerance in tomato

Crosstalk between phytohormone pathways is essential in plant growth, development and stress responses. Brassinosteroids (BRs) and ethylene are both pivotal plant growth regulators, and the interaction between these two phytohormones in the tomato response to salt stress is still unclear. Here, we e...

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Main Authors:	Zhu, Tong, Deng, Xingguang, Zhou, Xue, Zhu, Lisha, Zou, Lijuan, Li, Pengxu, Zhang, Dawei, Lin, Honghui
Format:	Online
Language:	English
Published:	Nature Publishing Group 2016
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5064326/

id	pubmed-5064326
recordtype	oai_dc
spelling	pubmed-50643262016-10-26 Ethylene and hydrogen peroxide are involved in brassinosteroid-induced salt tolerance in tomato Zhu, Tong Deng, Xingguang Zhou, Xue Zhu, Lisha Zou, Lijuan Li, Pengxu Zhang, Dawei Lin, Honghui Article Crosstalk between phytohormone pathways is essential in plant growth, development and stress responses. Brassinosteroids (BRs) and ethylene are both pivotal plant growth regulators, and the interaction between these two phytohormones in the tomato response to salt stress is still unclear. Here, we explored the mechanism by which BRs affect ethylene biosynthesis and signaling in tomato seedlings under salt stress. The activity of 1-aminocyclopropane-1-carboxylate synthase (ACS), an ethylene synthesis enzyme, and the ethylene signaling pathway were activated in plants pretreated with BRs. Scavenging of ethylene production or silencing of ethylene signaling components inhibited BR-induced salt tolerance and blocked BR-induced activities of several antioxidant enzymes. Previous studies have reported that BRs can induce plant tolerance to a variety of environmental stimuli by triggering the generation of H2O2 as a signaling molecule. We also found that H2O2 might be involved in the crosstalk between BRs and ethylene in the tomato response to salt stress. Simultaneously, BR-induced ethylene production was partially blocked by pretreated with a reactive oxygen species scavenger or synthesis inhibitor. These results strongly demonstrated that ethylene and H2O2 play important roles in BR-dependent induction of plant salt stress tolerance. Furthermore, we also investigated the relationship between BR signaling and ethylene signaling pathways in plant processes responding to salt stress. Nature Publishing Group 2016-10-14 /pmc/articles/PMC5064326/ /pubmed/27739520 http://dx.doi.org/10.1038/srep35392 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Zhu, Tong Deng, Xingguang Zhou, Xue Zhu, Lisha Zou, Lijuan Li, Pengxu Zhang, Dawei Lin, Honghui
spellingShingle	Zhu, Tong Deng, Xingguang Zhou, Xue Zhu, Lisha Zou, Lijuan Li, Pengxu Zhang, Dawei Lin, Honghui Ethylene and hydrogen peroxide are involved in brassinosteroid-induced salt tolerance in tomato
author_facet	Zhu, Tong Deng, Xingguang Zhou, Xue Zhu, Lisha Zou, Lijuan Li, Pengxu Zhang, Dawei Lin, Honghui
author_sort	Zhu, Tong
title	Ethylene and hydrogen peroxide are involved in brassinosteroid-induced salt tolerance in tomato
title_short	Ethylene and hydrogen peroxide are involved in brassinosteroid-induced salt tolerance in tomato
title_full	Ethylene and hydrogen peroxide are involved in brassinosteroid-induced salt tolerance in tomato
title_fullStr	Ethylene and hydrogen peroxide are involved in brassinosteroid-induced salt tolerance in tomato
title_full_unstemmed	Ethylene and hydrogen peroxide are involved in brassinosteroid-induced salt tolerance in tomato
title_sort	ethylene and hydrogen peroxide are involved in brassinosteroid-induced salt tolerance in tomato
description	Crosstalk between phytohormone pathways is essential in plant growth, development and stress responses. Brassinosteroids (BRs) and ethylene are both pivotal plant growth regulators, and the interaction between these two phytohormones in the tomato response to salt stress is still unclear. Here, we explored the mechanism by which BRs affect ethylene biosynthesis and signaling in tomato seedlings under salt stress. The activity of 1-aminocyclopropane-1-carboxylate synthase (ACS), an ethylene synthesis enzyme, and the ethylene signaling pathway were activated in plants pretreated with BRs. Scavenging of ethylene production or silencing of ethylene signaling components inhibited BR-induced salt tolerance and blocked BR-induced activities of several antioxidant enzymes. Previous studies have reported that BRs can induce plant tolerance to a variety of environmental stimuli by triggering the generation of H2O2 as a signaling molecule. We also found that H2O2 might be involved in the crosstalk between BRs and ethylene in the tomato response to salt stress. Simultaneously, BR-induced ethylene production was partially blocked by pretreated with a reactive oxygen species scavenger or synthesis inhibitor. These results strongly demonstrated that ethylene and H2O2 play important roles in BR-dependent induction of plant salt stress tolerance. Furthermore, we also investigated the relationship between BR signaling and ethylene signaling pathways in plant processes responding to salt stress.
publisher	Nature Publishing Group
publishDate	2016
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5064326/
_version_	1613684457196224512

Ethylene and hydrogen peroxide are involved in brassinosteroid-induced salt tolerance in tomato

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