干旱区生态环境知识资源中心(Arid): Response of Bletilla striata to Drought: Effects on Biochemical and Physiological Parameter Also with Electric Measurements

Arid

DOI	10.3390/plants11172313
	Response of Bletilla striata to Drought: Effects on Biochemical and Physiological Parameter Also with Electric Measurements
	Gao, Yongdao; Cai, Chang; Yang, Qiaoan; Quan, Wenxuan; Li, Chaochan; Wu, Yanyou
通讯作者	Li, CC
来源期刊	PLANTS-BASEL
ISSN	2223-7747
出版年	2022
卷号	11 期号:17
英文摘要	In heterogeneous landscapes with temporary water deficit characteristics in southwestern China, understanding the electrophysiological and morphological characteristics of Bletilla striata under different water conditions can help to better evaluate its suitability for planting plants in specific locations and guide planting and production. Using B. striata seedlings as experimental materials, the maximum field capacity (FC) was 75-80% (CK: control group), 50-60% FC (LS: light drought stress), 40-45% FC (MS: moderate drought stress), and 30-35% FC (SS: severe drought stress). In terms of physiological response, the activities of peroxidase (POD) and catalase (CAT) decreased under drought conditions, but the activity was well under the LS treatment, and the contents of proline (Pro) and malondialdehyde (MDA) increased. In terms of morphological responses, under drought conditions, root lengths of the rhizomes (except the LS treatment) were significantly reduced, the leaf lengths were reduced, and the biomass was significantly reduced. The stomatal size reached the maximum under the LS treatment, and the stomatal density gradually decreased with the increase in drought degree. In terms of electrophysiological responses, drought significantly decreased the net photosynthetic rate (PN) of B. striata, stomatal conductance (gs), and transpiration rate (Tr), but effectively increased the water use efficiency (WUE). The effective thickness of leaves of B. striata increased under drought conditions, and drought promoted the formation of leaf morphological diversity. Our results showed that drought stress changed the physiological and morphological characteristics of B. striata, and under light drought conditions had higher physiological activity, good morphological characteristics, higher cellular metabolic energy and ecological adaptability. Appropriate drought can promote the improvement of the quality of B. striata, and it can be widely planted in mildly arid areas.
英文关键词	Bletilla striata drought stress electrophysiological morphological characteristics cell metabolic energy
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:000851790200001
WOS关键词	WATER-STRESS ; PLANT ; ENERGY ; PHOTOSYNTHESIS ; MECHANISMS ; METABOLISM ; RESISTANCE ; VEGETATION ; BIOMASS ; GROWTH
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393999
推荐引用方式 GB/T 7714	Gao, Yongdao,Cai, Chang,Yang, Qiaoan,et al. Response of Bletilla striata to Drought: Effects on Biochemical and Physiological Parameter Also with Electric Measurements[J],2022,11(17).
APA	Gao, Yongdao,Cai, Chang,Yang, Qiaoan,Quan, Wenxuan,Li, Chaochan,&Wu, Yanyou.(2022).Response of Bletilla striata to Drought: Effects on Biochemical and Physiological Parameter Also with Electric Measurements.PLANTS-BASEL,11(17).
MLA	Gao, Yongdao,et al."Response of Bletilla striata to Drought: Effects on Biochemical and Physiological Parameter Also with Electric Measurements".PLANTS-BASEL 11.17(2022).