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393619

Revealing molecular adaptive response in maize (Zea mays L.) under nitrogen starvation stress in low fertile sandy soil

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Last updated: 20 Jan 2025

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Abstract

Developing maize genotypes with better resilience to nitrogen (N) starvation is a promising sustainable strategy for minimizing nitrogen fertilizers costs and nitrogen pollution in water and air within the Egyptian agroecosystem. In this work, we have examined 12 different Egyptian maize hybrids regarding phenotypical response to prolonged nitrogen starvation. Subsequently, 4 maize hybrids were selected to represent more-sensitive (TWC 360 and TWC 321) and less-sensitive (SC 128 and SC 130) maize hybrids, in response to severe N deficiency in soil, for further phenotypical, biochemical and molecular examination. The applied N starvation (complete prevention of N fertilization in sandy soil for 3 months) significantly reduced both of shoot dry weight (SDW) and root dry weight (RDW) where SC 130 showed the lowest reduction ratio (71% and 54%, respectively). For root traits, cross-section area (CSA) was dramatically diminished in response to N starvation with a reduction ratio of 64 and 61% in TWC 360 and TWC 321 (more sensitive), and 50 and 33% in SC 128 and SC 130 (less-sensitive), respectively. The applied N starvation stress significantly diminished total chlorophyll content where SC 130 showed the highest level (2.05 mg chlorophyll/g Fw) compared to 0.97 mg chlorophyll/g Fw in TWC 360. For the quantitative gene expression profile of several N stress marker genes: catalase, basic endochitinase, and nitrate transferase 1 gene were significantly upregulated in the less sensitive hybrids SC 128 and SC 130 leaves. On the other hand, high-affinity transporter gene 2.3 was reduced considerably in the less sensitive hybrids.

DOI

10.21608/ejar.2024.322847.1590

Keywords

Maize, Zea mays L, nitrogen starvation, Gene expression, root traits

Authors

First Name

Mohamed

Last Name

Hazman

MiddleName

-

Affiliation

Agricultural Genetic Engineering Research Institute (AGERI), Agricultural Research Center (ARC), Giza, Egypt

Email

yousof.hazman@outlook.com

City

-

Orcid

0000-0002-7797-6015

First Name

Samer

Last Name

Fawzy

MiddleName

-

Affiliation

School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast BT9 5AG, Northern Ireland, UK

Email

sfawzy01@qub.ac.uk

City

-

Orcid

-

First Name

Hana

Last Name

Magdy

MiddleName

-

Affiliation

the Biotechnology/Biomolecular Chemistry Program, Faculty of Science, Cairo University, Egypt

Email

hanamagddy255@gmail.com

City

-

Orcid

-

First Name

Ferial

Last Name

Hosny

MiddleName

-

Affiliation

Biotechnology/Biomolecular Chemistry Program, Faculty of Science, Cairo University, Egypt

Email

ferialhosny@gmail.com

City

-

Orcid

-

First Name

Nayera

Last Name

Hesham

MiddleName

-

Affiliation

Biotechnology/Biomolecular Chemistry Program, Faculty of Science, Cairo University, Egypt

Email

nayerah68@gmail.com

City

-

Orcid

-

First Name

Aziza

Last Name

Elshehawy

MiddleName

-

Affiliation

the Biotechnology/Biomolecular Chemistry Program, Faculty of Science, Cairo University, Egypt

Email

aziza.alshehawey99@gmail.com

City

-

Orcid

-

First Name

Haidy

Last Name

Alaa

MiddleName

-

Affiliation

Biotechnology/Biomolecular Chemistry Program, Faculty of Science, Cairo University, Egypt

Email

elkonaissyhaidy@gmail.com

City

-

Orcid

-

First Name

Aya

Last Name

Anas

MiddleName

-

Affiliation

Biotechnology/Biomolecular Chemistry Program, Faculty of Science, Cairo University, Egypt

Email

ayaalnajjar733@gmail.com

City

-

Orcid

-

First Name

Hania

Last Name

Mostafa

MiddleName

-

Affiliation

Biotechnology/Biomolecular Chemistry Program, Faculty of Science, Cairo University, Egypt

Email

haniamostafa48@gmail.com

City

-

Orcid

-

First Name

Nesma

Last Name

Osman

MiddleName

-

Affiliation

Biotechnology/Biomolecular Chemistry Program, Faculty of Science, Cairo University, Egypt

Email

nesmaamr88@gmail.com

City

-

Orcid

-

Volume

103

Article Issue

1

Related Issue

53123

Issue Date

2025-01-01

Receive Date

2024-09-22

Publish Date

2025-01-17

Page Start

1

Page End

12

Print ISSN

1110-6336

Online ISSN

2812-4936

Article File

EJAR_Volume 103_Issue 1_Pages 1-12.pdf

PDF . 1.7MB

Link

https://ejar.journals.ekb.eg/article_393619.html

Detail API

http://journals.ekb.eg?_action=service&article_code=393619

Order

61

Type

Original Article

Type Code

1,041

Publication Type

Journal

Publication Title

Egyptian Journal of Agricultural Research

Publication Link

https://ejar.journals.ekb.eg/

MainTitle

Revealing molecular adaptive response in maize (Zea mays L.) under nitrogen starvation stress in low fertile sandy soil

Details

Type

Article

Created At

20 Jan 2025