干旱区生态环境知识资源中心(Arid): Endogenous bioactive gibberellin/abscisic acids and enzyme activity synergistically promote the phytoremediation of alkaline soil by broomcorn millet (Panicum miliaceum L.)

Arid

DOI	10.1016/j.jenvman.2021.114362
	Endogenous bioactive gibberellin/abscisic acids and enzyme activity synergistically promote the phytoremediation of alkaline soil by broomcorn millet (Panicum miliaceum L.)
	Ma, Qian; Yuan, Yuhao; Wu, Enguo; Wang, Honglu; Dang, Ke; Feng, Yu; Ivanistau, Aliaksandr; Feng, Baili
通讯作者	Feng, BL
来源期刊	JOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN	0301-4797
EISSN	1095-8630
出版年	2022
卷号	305
英文摘要	Broomcorn millet (Panicum miliaceum L.), an important food crop, grows in arid and semi-arid areas that face soil saline-alkalization. To date, no studies have investigated the mechanisms by which broomcorn millet seeds respond to and tolerate alkali stress. In this study, six broomcorn millet genotypes (B102, B220, B269, B279, B289, and B297) were selected to explore the physiological and molecular mechanisms of alkali stress at the germination stage. The results showed that alkali stress delayed the germination of broomcorn millet, and a-amylase activity was positively correlated with the germination rate. After alkali stress, the genotypes with lower alkali damage rates exhibited stronger antioxidant defenses. Real-time polymerase chain reaction analysis showed that alkali stress downregulated gibberellic acid (GA) synthesis genes but upregulated GA inactivation and abscisic acid (ABA) synthesis genes. Similarly, seeds displayed lower GA concentrations and higher ABA concentrations after alkali stress. Therefore, the ratios of various GAs/ABA decreased within the range of 35.77% to approximately 96.45%. Additionally, genotypes associated with lower alkali damage rates had higher GA/ABA ratios. These findings indicate that the alkali tolerance of broomcorn millet at the germination stage may be attributed to higher GA/ABA ratios, higher a-amylase activity, and stronger antioxidant defense, which synergistically resist alkali stress. This study will contribute to molecular breeding aiming to enhance alkali-tolerance and restoration of alkaline soils.
英文关键词	GA/ABA ratio Broomcorn millet alpha-amylase Antioxidant defense Alkali stress
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000763570300007
WOS关键词	ALPHA-AMYLASE ACTIVITY ; SEED-GERMINATION ; GREATER TOLERANCE ; ABSCISIC-ACID ; STRESS ; TRANSPORT ; DAMAGE ; ROOTS ; ZINC ; ABA
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393407
推荐引用方式 GB/T 7714	Ma, Qian,Yuan, Yuhao,Wu, Enguo,et al. Endogenous bioactive gibberellin/abscisic acids and enzyme activity synergistically promote the phytoremediation of alkaline soil by broomcorn millet (Panicum miliaceum L.)[J],2022,305.
APA	Ma, Qian.,Yuan, Yuhao.,Wu, Enguo.,Wang, Honglu.,Dang, Ke.,...&Feng, Baili.(2022).Endogenous bioactive gibberellin/abscisic acids and enzyme activity synergistically promote the phytoremediation of alkaline soil by broomcorn millet (Panicum miliaceum L.).JOURNAL OF ENVIRONMENTAL MANAGEMENT,305.
MLA	Ma, Qian,et al."Endogenous bioactive gibberellin/abscisic acids and enzyme activity synergistically promote the phytoremediation of alkaline soil by broomcorn millet (Panicum miliaceum L.)".JOURNAL OF ENVIRONMENTAL MANAGEMENT 305(2022).