Exogenously-sourced ethylene modulates defense mechanisms and promotes tolerance to zinc stress in mustard (Brassica juncea l.)

M. Iqbal R. Khan; Badar Jahan; Mohamed F. Alajmi; Md Tabish Rehman; Nafees A. Khan

doi:10.3390/plants8120540

Exogenously-sourced ethylene modulates defense mechanisms and promotes tolerance to zinc stress in mustard (Brassica juncea l.)

M. Iqbal R. Khan, Badar Jahan, Mohamed F. Alajmi, Md Tabish Rehman, Nafees A. Khan

Institute of Agriculture

Research output: Contribution to journal › Article › peer-review

51 Citations (Scopus)

Abstract

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.

Original language	English
Article number	540
Journal	Plants
Volume	8
Issue number	12
DOIs	https://doi.org/10.3390/plants8120540
Publication status	Published - Dec 2019

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10.3390/plants8120540Licence: CC BY

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title = "Exogenously-sourced ethylene modulates defense mechanisms and promotes tolerance to zinc stress in mustard (Brassica juncea l.)",

abstract = "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.",

keywords = "Antioxidant system, Ethylene, Glyoxalase system, Photosynthesis, Proline metabolism, Zinc",

author = "Khan, {M. Iqbal R.} and Badar Jahan and Alajmi, {Mohamed F.} and Rehman, {Md Tabish} and Khan, {Nafees A.}",

note = "Funding Information: This work was supported by National Institutes of Health Grant MH 42074 and a fellowship from the Aaron Diamond Foundation to J. D. W. and by a Grant-in-Aid from the American Heart Association and a Basil O'Conner Award from the March of Dimes Birth Defects Foundation to E. F. L. Publisher Copyright: {\textcopyright} 2019 by the authors. Licensee MDPI, Basel, Switzerland.",

year = "2019",

month = dec,

doi = "10.3390/plants8120540",

language = "English",

volume = "8",

journal = "Plants",

issn = "2223-7747",

publisher = "MDPI AG",

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T1 - Exogenously-sourced ethylene modulates defense mechanisms and promotes tolerance to zinc stress in mustard (Brassica juncea l.)

AU - Khan, M. Iqbal R.

AU - Jahan, Badar

AU - Alajmi, Mohamed F.

AU - Rehman, Md Tabish

AU - Khan, Nafees A.

N1 - Funding Information: This work was supported by National Institutes of Health Grant MH 42074 and a fellowship from the Aaron Diamond Foundation to J. D. W. and by a Grant-in-Aid from the American Heart Association and a Basil O'Conner Award from the March of Dimes Birth Defects Foundation to E. F. L. Publisher Copyright: © 2019 by the authors. Licensee MDPI, Basel, Switzerland.

PY - 2019/12

Y1 - 2019/12

N2 - 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.

AB - 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.

KW - Antioxidant system

KW - Ethylene

KW - Glyoxalase system

KW - Photosynthesis

KW - Proline metabolism

KW - Zinc

UR - http://www.scopus.com/inward/record.url?scp=85075521414&partnerID=8YFLogxK

U2 - 10.3390/plants8120540

DO - 10.3390/plants8120540

M3 - Article

AN - SCOPUS:85075521414

SN - 2223-7747

VL - 8

JO - Plants

JF - Plants

IS - 12

M1 - 540

ER -

Exogenously-sourced ethylene modulates defense mechanisms and promotes tolerance to zinc stress in mustard (Brassica juncea l.)

Abstract

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