干旱区生态环境知识资源中心(Arid): Water-shortage tolerance and recovery after rehydration in the Chihuahuan Desert plant Yucca filifera (Asparagaceae)

Arid

DOI	10.3159/TORREY-D-18-00001.1
	Water-shortage tolerance and recovery after rehydration in the Chihuahuan Desert plant Yucca filifera (Asparagaceae)
	Gonzalez-Salvatierra, Claudia 1; Flores, Joel 2
通讯作者	Flores, Joel
来源期刊	JOURNAL OF THE TORREY BOTANICAL SOCIETY
ISSN	1095-5674
EISSN	1940-0616
出版年	2019
卷号	146 期号:2 页码:128-137
英文摘要	We evaluated several mechanisms that enable saplings of Yucca filifera (Chabaud) to endure water shortage. Saplings were exposed to water shortage and subsequent rewatering inside a greenhouse. The response variables were maximum quantum efficiency (F-v/F-m), effective quantum yield of photosystem II (Phi(PSII)), nonphotochemical quenching (NPQ), electron transport rate (ETR), leaf relative water content, titratable acid (Delta H+), pigment content (chlorophylls a and b, total carotenoids, chlorophyll a+b/carotenoids ratio, and chlorophyll a/b ratio), antioxidant activity, and proline accumulation. We hypothesized that Y. filifera saplings tolerate water shortage, and that rewatering favors the sapling development. We found that F-v/F-m and Phi(PSII) values as well as Delta H+ and chlorophyll a/b ratio were strongly affected by water shortage, and their values reverted after rewatering. We also found higher NPQ, antioxidant activity, and proline content during the water-shortage treatment, which might represent mechanisms for preventing photodamage. The high ability of Y. filifera saplings to withstand stress caused by water shortage indicates that it could be a key species for conservation and restoration of degraded arid ecosystems.
英文关键词	CAM plants Chihuahuan Desert chlorophyll fluorescence photosynthetic pigments water stress
类型	Article
语种	英语
国家	Mexico
收录类别	SCI-E
WOS记录号	WOS:000469502000006
WOS关键词	CRASSULACEAN ACID METABOLISM ; PHOTOSYNTHETIC ACCLIMATION ; CHLOROPHYLL FLUORESCENCE ; ELECTRON-TRANSPORT ; ENERGY-DISSIPATION ; XANTHOPHYLL-CYCLE ; SEEDLINGS ; PROLINE ; TEMPERATURE ; PERFORMANCE
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/2XILL650/217387
作者单位	1.Tecnol Nacl Mexico, Catedra CONACYT, ITChetumal, Av Insurgentes 330, Chetmal 77013, Quintana Roo, Mexico; 2.Inst Potosino Invest Cient & Tecnol, Div Ciencias Ambient, Camino Presa San Jose 2055,Colonia Lomas 4a, San Luis Potosi 78216, Slp, Mexico
推荐引用方式 GB/T 7714	Gonzalez-Salvatierra, Claudia,Flores, Joel. Water-shortage tolerance and recovery after rehydration in the Chihuahuan Desert plant Yucca filifera (Asparagaceae)[J],2019,146(2):128-137.
APA	Gonzalez-Salvatierra, Claudia,&Flores, Joel.(2019).Water-shortage tolerance and recovery after rehydration in the Chihuahuan Desert plant Yucca filifera (Asparagaceae).JOURNAL OF THE TORREY BOTANICAL SOCIETY,146(2),128-137.
MLA	Gonzalez-Salvatierra, Claudia,et al."Water-shortage tolerance and recovery after rehydration in the Chihuahuan Desert plant Yucca filifera (Asparagaceae)".JOURNAL OF THE TORREY BOTANICAL SOCIETY 146.2(2019):128-137.