干旱区生态环境知识资源中心(Arid): Response of Hydraulic and Photosynthetic Characteristics of Caroxylon passerinum (Bunge) Akhani and Roalson to Prolonged Drought and Short-Term Rehydration

Arid

DOI	10.3390/f14101961
	Response of Hydraulic and Photosynthetic Characteristics of Caroxylon passerinum (Bunge) Akhani and Roalson to Prolonged Drought and Short-Term Rehydration
	Wang, Yunxia; Wang, Hongyong; Xie, Tingting; Niu, Furong; He, Cai; Wang, Jianbo; Shan, Lishan
通讯作者	Shan, LS
来源期刊	FORESTS
EISSN	1999-4907
出版年	2023
卷号	14 期号:10
英文摘要	Hydraulic traits are essential functional characteristics of plants related to water absorption, transport, and loss, serving as indicators of a plant's adaptability to prevailing environmental water conditions. However, the hydraulic traits of shrub, particularly desert plants in arid and semi-arid regions, have been underexplored. In this study, we conducted a pot experiment using Caroxylon passerinum (Bunge) Akhani and Roalson as the subject. Three treatment groups were established: adequate water supply, mild drought, and severe drought. After subjecting the shrub to drought and subsequent rehydration, we measured hydraulic conductivity, net photosynthetic rate, and stomatal conductance. We found that leaf water potential decreased and stomatal conductance and net photosynthesis decreased with increasing drought intensity. We found that leaf water potential and stomatal conductance decreased with increasing drought intensity. Although there was no significant change in hydraulic conductivity in the two drought groups, the values were greater in the drought group than in the control, and greater in the mild drought group than in the severe drought group. Meanwhile, the embolism resistance decreased with increasing drought intensity. After rehydration, hydraulic conductivity did not return to control levels in the severe drought group, as did embolism resistance in the two drought groups, and leaf water potential did not recover significantly. The results showed that drought stress increased the hydraulic conductivity of C. passerinum, and this effect was more pronounced under mild drought stress. After the stress was lifted, C. passerinum continued to maintain a lower leaf water potential to promote water uptake. This result provides a reference for us to study water use of desert shrubs under different drought stresses.
英文关键词	hydraulic conductivity xylem embolism photosynthetic rate embolism resistance leaf water potential
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001094152600001
WOS关键词	STOMATAL CONDUCTANCE ; XYLEM FUNCTION ; GAS-EXCHANGE ; EMBOLISM ; RECOVERY ; VULNERABILITY ; CONDUCTIVITY ; TRAITS ; GROWTH ; POINT
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/2XILL650/396445
推荐引用方式 GB/T 7714	Wang, Yunxia,Wang, Hongyong,Xie, Tingting,et al. Response of Hydraulic and Photosynthetic Characteristics of Caroxylon passerinum (Bunge) Akhani and Roalson to Prolonged Drought and Short-Term Rehydration[J],2023,14(10).
APA	Wang, Yunxia.,Wang, Hongyong.,Xie, Tingting.,Niu, Furong.,He, Cai.,...&Shan, Lishan.(2023).Response of Hydraulic and Photosynthetic Characteristics of Caroxylon passerinum (Bunge) Akhani and Roalson to Prolonged Drought and Short-Term Rehydration.FORESTS,14(10).
MLA	Wang, Yunxia,et al."Response of Hydraulic and Photosynthetic Characteristics of Caroxylon passerinum (Bunge) Akhani and Roalson to Prolonged Drought and Short-Term Rehydration".FORESTS 14.10(2023).