干旱区生态环境知识资源中心(Arid): Drought resistance mechanisms of Phedimus aizoon L.

Arid

DOI	10.1038/s41598-021-93118-7
	Drought resistance mechanisms of Phedimus aizoon L.
	Liu, Yuhang; He, Zhongqun; Xie, Yongdong; Su, Lihong; Zhang, Ruijie; Wang, Haixia; Li, Chunyan; Long, Shengju
通讯作者	He, ZQ (corresponding author), Sichuan Agr Univ, Coll Hort, Chengdu, Sichuan, Peoples R China. ; He, ZQ (corresponding author), Inst Proc & Storage Agr Prod, Chengdu Acad Agr & Forest Sci, Chengdu, Sichuan, Peoples R China.
来源期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
出版年	2021
卷号	11 期号:1
英文摘要	Phedimus aizoon L. is a drought-resistant Chinese herbal medicine and vegetable. However, its drought tolerant limit and the mechanism of drought tolerance are unknown, which restricts the promotion of water-saving cultivation of Phedimus aizoon L. in arid areas. To solve the above problem, we carried out a 30-day-long drought stress experiment in pots that presented different soil water contents and were divided into four groups: control check, 75-80% of the maximum water-holding capacity (MWHC); mild drought, 55-60%; moderate drought, 40-45%; and severe drought, 20-25%. The dynamic changes in both plant physiological indexes from 10 to 30 days and leaf anatomical structure on the 30th day of stress were recorded. The results show that Phedimus aizoon L. grew normally under mild drought stress for 30 days, but the growth of the plants became inhibited after 20 days of severe drought and after 30 days of moderate drought. At the same time, Phedimus aizoon L. physiologically responded to cope with drought stress: the growth of the root system accelerated, the waxy layer of the leaves thickened, and the dark reactions of the plants transformed from those of the C3 cycle to CAM. The activity of antioxidant enzymes (SOD, POD and CAT) continuously increased to alleviate the damage caused by drought stress. To ensure the relative stability of the osmotic potential, the contents of osmoregulatory substances such as proline, soluble sugars, soluble protein and trehalose increased correspondingly. Although Phedimus aizoon L. has strong drought stress resistance, our experimental results show that the soil available water content should not be less than 27% during cultivation.
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000671791200029
WOS关键词	CRASSULACEAN ACID METABOLISM ; ANTIOXIDANT ENZYMES ; STRESS ; TOLERANCE ; RESPONSES ; SALINITY ; ADAPTATION ; ADJUSTMENT
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364661
作者单位	[Liu, Yuhang; He, Zhongqun; Xie, Yongdong; Su, Lihong; Zhang, Ruijie; Wang, Haixia; Li, Chunyan; Long, Shengju] Sichuan Agr Univ, Coll Hort, Chengdu, Sichuan, Peoples R China; [He, Zhongqun; Xie, Yongdong] Inst Proc & Storage Agr Prod, Chengdu Acad Agr & Forest Sci, Chengdu, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Liu, Yuhang,He, Zhongqun,Xie, Yongdong,et al. Drought resistance mechanisms of Phedimus aizoon L.[J],2021,11(1).
APA	Liu, Yuhang.,He, Zhongqun.,Xie, Yongdong.,Su, Lihong.,Zhang, Ruijie.,...&Long, Shengju.(2021).Drought resistance mechanisms of Phedimus aizoon L..SCIENTIFIC REPORTS,11(1).
MLA	Liu, Yuhang,et al."Drought resistance mechanisms of Phedimus aizoon L.".SCIENTIFIC REPORTS 11.1(2021).