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Exogenously-Sourced Ethylene Modulates Defense Mechanisms and Promotes Tolerance to Zinc Stress in Mustard (Brassica juncea L.)

Heavy metal (HM) contamination of agricultural soil is primarily related to anthropogenic perturbations. Exposure to high concentration of HMs causes toxicity and undesirable effects in plants. In this study, the significance of ethylene was studied in response of mustard (Brassica juncea) to a high...

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Autores principales: Khan, M. Iqbal R., Jahan, Badar, Alajmi, Mohamed F, Rehman, Md Tabish, Khan, Nafees A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6963746/
https://www.ncbi.nlm.nih.gov/pubmed/31775257
http://dx.doi.org/10.3390/plants8120540
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author Khan, M. Iqbal R.
Jahan, Badar
Alajmi, Mohamed F
Rehman, Md Tabish
Khan, Nafees A.
author_facet Khan, M. Iqbal R.
Jahan, Badar
Alajmi, Mohamed F
Rehman, Md Tabish
Khan, Nafees A.
author_sort Khan, M. Iqbal R.
collection PubMed
description Heavy metal (HM) contamination of agricultural soil is primarily related to anthropogenic perturbations. Exposure to high concentration of HMs causes toxicity and undesirable effects in plants. In this study, the significance of ethylene was studied in response of mustard (Brassica juncea) to a high level (200 mg kg(−1) soil) of zinc (Zn) exposure. Plants with high Zn showed inhibited photosynthesis and growth with the increase in oxidative stress. Application of ethylene (as ethephon) to Zn-grown plants restored photosynthesis and growth by inhibiting oxidative stress through increased antioxidant activity, the proline metabolism glyoxalase system, and nutrient homoeostasis. The results suggested that ethylene played a role in modulating defense mechanisms for tolerance of plants to Zn stress.
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spelling pubmed-69637462020-01-27 Exogenously-Sourced Ethylene Modulates Defense Mechanisms and Promotes Tolerance to Zinc Stress in Mustard (Brassica juncea L.) Khan, M. Iqbal R. Jahan, Badar Alajmi, Mohamed F Rehman, Md Tabish Khan, Nafees A. Plants (Basel) Article Heavy metal (HM) contamination of agricultural soil is primarily related to anthropogenic perturbations. Exposure to high concentration of HMs causes toxicity and undesirable effects in plants. In this study, the significance of ethylene was studied in response of mustard (Brassica juncea) to a high level (200 mg kg(−1) soil) of zinc (Zn) exposure. Plants with high Zn showed inhibited photosynthesis and growth with the increase in oxidative stress. Application of ethylene (as ethephon) to Zn-grown plants restored photosynthesis and growth by inhibiting oxidative stress through increased antioxidant activity, the proline metabolism glyoxalase system, and nutrient homoeostasis. The results suggested that ethylene played a role in modulating defense mechanisms for tolerance of plants to Zn stress. MDPI 2019-11-25 /pmc/articles/PMC6963746/ /pubmed/31775257 http://dx.doi.org/10.3390/plants8120540 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Khan, M. Iqbal R.
Jahan, Badar
Alajmi, Mohamed F
Rehman, Md Tabish
Khan, Nafees A.
Exogenously-Sourced Ethylene Modulates Defense Mechanisms and Promotes Tolerance to Zinc Stress in Mustard (Brassica juncea L.)
title Exogenously-Sourced Ethylene Modulates Defense Mechanisms and Promotes Tolerance to Zinc Stress in Mustard (Brassica juncea L.)
title_full Exogenously-Sourced Ethylene Modulates Defense Mechanisms and Promotes Tolerance to Zinc Stress in Mustard (Brassica juncea L.)
title_fullStr Exogenously-Sourced Ethylene Modulates Defense Mechanisms and Promotes Tolerance to Zinc Stress in Mustard (Brassica juncea L.)
title_full_unstemmed Exogenously-Sourced Ethylene Modulates Defense Mechanisms and Promotes Tolerance to Zinc Stress in Mustard (Brassica juncea L.)
title_short Exogenously-Sourced Ethylene Modulates Defense Mechanisms and Promotes Tolerance to Zinc Stress in Mustard (Brassica juncea L.)
title_sort exogenously-sourced ethylene modulates defense mechanisms and promotes tolerance to zinc stress in mustard (brassica juncea l.)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6963746/
https://www.ncbi.nlm.nih.gov/pubmed/31775257
http://dx.doi.org/10.3390/plants8120540
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