干旱区生态环境知识资源中心(Arid): Evaluation of Drought Tolerance of Five Maize Genotypes by Virtue of Physiological and Molecular Responses

Arid

DOI	10.3390/agronomy12010059
	Evaluation of Drought Tolerance of Five Maize Genotypes by Virtue of Physiological and Molecular Responses
	Saad-Allah, Khalil M.; Nessem, Afaf A.; Ebrahim, Mohsen K. H.; Gad, Dina
通讯作者	Saad-Allah, KM
来源期刊	AGRONOMY-BASEL
EISSN	2073-4395
出版年	2022
卷号	12 期号:1
英文摘要	Drought has been recognized as a potential challenge to maize production around the world, particularly in arid and semi-arid regions. The primary focus of the present study was to investigate the metabolic and physiological adjustment mechanisms as well as drought-responsive gene expression patterns in five maize (Zea mays L.) genotypes (G314, G2, G10, G123, and G326) with varying drought-tolerance capacities at the vegetative stage. Twenty-one days-old maize plants from five maize genotypes were submitted to a well-watered (10 days) watering interval as a control, mild water stress (15 day interval), and severe water stress (20 day interval) treatments in a field experiment for two successive seasons (2019 and 2020). For all maize genotypes, the results showed that water stress significantly reduced plant height, leaf area, biomass, and yield characteristics. However, water stress, which was associated with the length of the watering interval, increased the concentrations of glycine betaine, amino acids, proline, phenols, flavonoids, soluble proteins, and soluble sugars, as well as catalase and peroxidase activities. On the transcriptional level, prolonged water stress increased the expression of drought-responsive genes (LOS5, Rad17, NCED1, CAT1, and ZmP5CS1), with G10 and G123 genotypes being the most drought-resistant. Herein, genotypes G10 and G123 were shown in this study to be relatively water stress tolerant due to improved osmoregulatory, antioxidant, and metabolic activities under water stress conditions, as well as the fact that they were endowed with stress-responsive genes.
英文关键词	maize genotypes drought tolerance oxidative stress osmoregulation qRT-PCR
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000760437400001
WOS关键词	ZEA-MAYS L. ; WATER-STRESS ; GENE-EXPRESSION ; BRASSICA-NAPUS ; FREE PROLINE ; GROWTH ; MECHANISMS ; PROTEIN ; PLANTS ; ABA
WOS类目	Agronomy ; Plant Sciences
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376651
推荐引用方式 GB/T 7714	Saad-Allah, Khalil M.,Nessem, Afaf A.,Ebrahim, Mohsen K. H.,et al. Evaluation of Drought Tolerance of Five Maize Genotypes by Virtue of Physiological and Molecular Responses[J],2022,12(1).
APA	Saad-Allah, Khalil M.,Nessem, Afaf A.,Ebrahim, Mohsen K. H.,&Gad, Dina.(2022).Evaluation of Drought Tolerance of Five Maize Genotypes by Virtue of Physiological and Molecular Responses.AGRONOMY-BASEL,12(1).
MLA	Saad-Allah, Khalil M.,et al."Evaluation of Drought Tolerance of Five Maize Genotypes by Virtue of Physiological and Molecular Responses".AGRONOMY-BASEL 12.1(2022).