干旱区生态环境知识资源中心(Arid): Leaf water potential-dependent leaflet closure contributes to legume leaves cool down and drought avoidance under diurnal drought stress

Arid

DOI	10.1093/treephys/tpac075
	Leaf water potential-dependent leaflet closure contributes to legume leaves cool down and drought avoidance under diurnal drought stress
	Feng, Xiangyan; Zhong, Lingfei; Tian, Quanyan; Zhao, Wenzhi
通讯作者	Zhao, WZ
来源期刊	TREE PHYSIOLOGY
ISSN	0829-318X
EISSN	1758-4469
出版年	2022
卷号	42 期号:11 页码:2239-2251
英文摘要	Efficient thermoregulation under diurnal drought stress protects leaves from photosystem damage and water supply-demand imbalance, yet the cool effect and drought avoidance by leaflet closure have not been well understood. We investigated the cool effect and the drought avoidance of leaflet closure in legume species that survived in the semi-arid region facing seasonal and diurnal drought stress. The results showed that leaflet closure effectively cooled down legume leaves through a reduction of projected leaflet area and the cosine of the angle of incidence (cos i). The leaflet closure was strongly dependent on leaf water potential (psi(leaf)). In addition, by characterizing the sequence of key leaf drought response traits, we found leaflet closure occurred after stomatal closure and reduced transpiration rate but before hydraulic failure and turgor loss point (psi(tlp)). The meta-analysis also showed that the leaflet closure and cos i decreased after the stomatal conductance declined but before midday. These results imply that psi(leaf)-dependent leaflet closure as an alternative to transpiration for leaflet cooling down and as a protective drought avoidance strategy assisting sessile legume plants survival under drought stress.
英文关键词	leaf temperature
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000844519300001
WOS关键词	STOMATAL RESPONSES ; HEAT-STRESS ; TEMPERATURE ; ORIENTATION ; VULNERABILITY ; DEHYDRATION ; PRESSURE ; TURGOR ; PLANTS ; WOODY
WOS类目	Forestry
WOS研究方向	Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394736
推荐引用方式 GB/T 7714	Feng, Xiangyan,Zhong, Lingfei,Tian, Quanyan,et al. Leaf water potential-dependent leaflet closure contributes to legume leaves cool down and drought avoidance under diurnal drought stress[J],2022,42(11):2239-2251.
APA	Feng, Xiangyan,Zhong, Lingfei,Tian, Quanyan,&Zhao, Wenzhi.(2022).Leaf water potential-dependent leaflet closure contributes to legume leaves cool down and drought avoidance under diurnal drought stress.TREE PHYSIOLOGY,42(11),2239-2251.
MLA	Feng, Xiangyan,et al."Leaf water potential-dependent leaflet closure contributes to legume leaves cool down and drought avoidance under diurnal drought stress".TREE PHYSIOLOGY 42.11(2022):2239-2251.