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Exogenously-applied Salicylic Acid and Ascorbic Acid Modulate some Physiological Traits and Antioxidative Defense System in <i> Zea mays </i> L. Seedlings under Drought Stress

Article

Last updated: 01 Jan 2025

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Abstract

THIS WORK was undertaken to evaluate the effects of salicylic acid (SA) (0.0 and 0.5 mM) and ascorbic acid (AsA) (0.0 and 100 ppm) on enzymes activity, soluble sugars, and some physiological traits of maize seedlings (Zay mays L.) under drought stress using PEG-6000. In general, under drought conditions, significant reduction in plant biomass and photosynthetic pigments was detected. On the other hand, soluble sugars (glucose, fructose and sucrose), soluble proteins, antioxidant enzymes activity [catalase (CAT), ascrobate peroxidase (APOX) and superoxide dismutase (SOD)], glutathione (GSH), proline and malondialdehyde (MDA) contents were increased significantly under drought as compared to control. Shoots of tested plants were more affected by drought stress than roots. Seed presoaking in AsA or SA solutions resulted in massive increase in growth parameters, chlorophyll contents, osmoprotectants (soluble sugars, free amino acids and soluble proteins), antioxidant enzymes activity [ascrobate peroxidase (APOX) and superoxide dismutase (SOD)] and non-enzymatic antioxidants [carotenoids, and glutathione (GSH)] content as compared to control. Conversely, proline, catalase (CAT) and malondialdehyde (MDA) content were decreased significantly. The present study established that, both salicylic acid and ascorbic acid alleviate drought stress in maize plants which could attribute to the increased in osmotic solutes and antioxidative capacity of maize plants.

DOI

10.21608/ejbo.2020.20077.1400

Keywords

ascorbic acid, antioxidants, Drought stress, Salicylic acid

Authors

First Name

Naglaa

Last Name

Loutfy

MiddleName

-

Affiliation

Botany and Microbiology Department, Faculty of Science, South Valley University, Qena, Egypt

Email

naglaaloutfy@yahoo.com

City

-

Orcid

-

First Name

Mohamed

Last Name

Azooz

MiddleName

-

Affiliation

Botany and Microbiology Department, Faculty of Science, South Valley University, Qena, Egypt

Email

azzozm@yahoo.com

City

Qena

Orcid

-

First Name

Mona F.

Last Name

Abou Alhamd

MiddleName

-

Affiliation

Botany and Microbiology Department, Faculty of Science, South Valley University, Qena, Egypt

Email

aboualhamed@yahoo.com

City

Qena

Orcid

-

Volume

60

Article Issue

1

Related Issue

12086

Issue Date

2020-04-01

Receive Date

2019-11-25

Publish Date

2020-04-01

Page Start

313

Page End

324

Print ISSN

0375-9237

Online ISSN

2357-0350

Link

https://ejbo.journals.ekb.eg/article_75771.html

Detail API

https://ejbo.journals.ekb.eg/service?article_code=75771

Order

37

Type

Original Article

Type Code

111

Publication Type

Journal

Publication Title

Egyptian Journal of Botany

Publication Link

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

MainTitle

Exogenously-applied Salicylic Acid and Ascorbic Acid Modulate some Physiological Traits and Antioxidative Defense System in <i> Zea mays </i> L. Seedlings under Drought Stress

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Type

Article

Created At

22 Jan 2023