干旱区生态环境知识资源中心(Arid): Physiological Response and Antioxidant Enzyme Activity of New Durum Wheat Varieties under Heat Stress

Arid

DOI	10.1134/S1062359023600812
	Physiological Response and Antioxidant Enzyme Activity of New Durum Wheat Varieties under Heat Stress
	Abdelmalek, A.; Hamli, S.; Benahmed, A.; Addad, D.; Souahi, H.; Dekak, A.; Negaz, K.; Benbelkecem, A.
通讯作者	Abdelmalek, A
来源期刊	BIOLOGY BULLETIN
ISSN	1062-3590
EISSN	1608-3059
出版年	2023
卷号	50 期号:5 页码:919-930
英文摘要	Heat stress is one of the most important environmental factors causing serious problems to durum wheat production in arid and semi-arid regions. Different biochemical and physiological parameters were determined in the leaves of new durum wheat varieties (Triticum durum Desf.) under heat shock stress (40 degrees C) at the 3rd-4th leaf stage to select tolerant genotypes: antioxidant enzyme activities; ascorbate peroxidase (APX), catalase (CAT), guaiacol peroxidase (GPX), malondialdehyde (MDA) content, total chlorophyll, chlorophyll (a) and (b) content, photochemical efficiency (FvFm-1) and cell membrane stability (CMS). This is the first time that this study has been carried out to test these varieties for their heat stress tolerance using antioxydant enzymes. Results show that heat stress has a significant impact on the most of the measured parameters, increasing levels of (MDA) content and enzyme activity up to 81.41% for catalase (CAT) compared to the control and decreasing the chlorophyll content and photochemical efficiency (FvFm-1), reaches 40% for chlorophyll (a). The lowest level of MDA was registered in the genotype Boutaleb with 1.170 +/- 0.23 mu mol g(-1) FM, whereas the highest level in catalase activity was observed in Boutaleb and Mansourah (0.011 +/- 0.001) and (0.009 +/- 0.002) mu mol min(-1) mg(-1) respectively, in comparison with the control and with the other genotypes, and the lowest level was determined in Hoggar with (0.002 +/- 0.001) mu mol min(-1) mg(-1). The new variety Boutaleb (G5) performs better than other genotypes, and it will serve as a source of new heat-tolerant wheat lines.
英文关键词	heat stress Triticum durum Desf. enzyme activity catalase new lines
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001047181300006
WOS关键词	TRITICUM-AESTIVUM L. ; TOLERANCE ; DROUGHT
WOS类目	Biology
WOS研究方向	Life Sciences & Biomedicine - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395556
推荐引用方式 GB/T 7714	Abdelmalek, A.,Hamli, S.,Benahmed, A.,et al. Physiological Response and Antioxidant Enzyme Activity of New Durum Wheat Varieties under Heat Stress[J],2023,50(5):919-930.
APA	Abdelmalek, A..,Hamli, S..,Benahmed, A..,Addad, D..,Souahi, H..,...&Benbelkecem, A..(2023).Physiological Response and Antioxidant Enzyme Activity of New Durum Wheat Varieties under Heat Stress.BIOLOGY BULLETIN,50(5),919-930.
MLA	Abdelmalek, A.,et al."Physiological Response and Antioxidant Enzyme Activity of New Durum Wheat Varieties under Heat Stress".BIOLOGY BULLETIN 50.5(2023):919-930.