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Physiological and Biochemical Responses of Medicagotruncatula to Drought Stress

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Last updated: 01 Jan 2025

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Abstract

 It is frequently observed that drought stress decreased plant growth decreased plant growth and induced cellular damages. However, the damages. However, the underlying physiological and biochemical mechanisms are not well understood. Medicagotruncatulawassubjected to drought stress by water withdrawing at mature stage and for one week. Drought stress reduced plant growth, inhibited photosynthesis, stomatal conductance and induced oxidative stress. Water stress induced changes e.g. it increased osmo-protectants (proline, glycine betaine), and the level of oxidative stress parameters (H2O2 and lipid peroxidation). In parallel with higher levels of H2O2 and MDA, there were increase in NADPH oxidase and lipoxygenase (LOX) activities in Medicagotruncatula. Presumably as a consequence of the induction of H2O2 production, activation in some antioxidant defense components was observed (e.g. increased superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPX), peroxidase (POX) and glutathione reductase (GR). Other antioxidant component were also significantly increased by drought stress.

DOI

10.21608/ejbo.2016.4023

Keywords

drought, legume, Medicagotruncatula, Oxidative Stress, Plant redox network

Volume

56

Article Issue

3

Related Issue

507

Issue Date

2016-09-01

Receive Date

2016-06-27

Publish Date

2016-09-30

Page Start

895

Page End

912

Print ISSN

0375-9237

Online ISSN

2357-0350

Article File

EJBO_Volume 56_Issue 3_Pages 895-912.pdf

PDF . 1.1MB

Link

https://ejbo.journals.ekb.eg/article_4023.html

Detail API

https://ejbo.journals.ekb.eg/service?article_code=4023

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21

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Original Article

Type Code

111

Publication Type

Journal

Publication Title

Egyptian Journal of Botany

Publication Link

https://ejbo.journals.ekb.eg/

MainTitle

Physiological and Biochemical Responses of Medicagotruncatula to Drought Stress

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Article

Created At

22 Jan 2023