Physiological changes of purslane (Portulaca oleracea L.) after progressive drought stress and rehydration

doi:10.1016/j.scienta.2015.08.023

CORC > 武汉植物园 > 中国科学院武汉植物园

	Physiological changes of purslane (Portulaca oleracea L.) after progressive drought stress and rehydration
	Jin, Rui 1,2; Shi, Haitao 1; Han, Chunyu 1,2; Zhong, Bao 1,2; Wang, Qing 1; Chan, Zhulong 1
刊名	SCIENTIA HORTICULTURAE
	2015-10-14
卷号	194 页码:215-221
关键词	Purslane Drought stress Rehydration ROS Antioxidant enzyme
ISSN号	0304-4238
DOI	10.1016/j.scienta.2015.08.023
英文摘要	Purslane (Portulaca oleracea L.) is a herbaceous fleshy plant, which is relatively more tolerant to drought than other species. So far, there is little information on the combined response of this plant to drought and rehydration. In this study, physiological changes were measured under drought stress and rehydration conditions in purslane. Soil water content (SWC), leaf water content (LWC), malondialdehyde (MDA), proline, electrolyte leakage (EL), chlorophyll content, O-2(center dot-), SOD and POD activities were determined at designated time periods (5 d, 10 d, 15 d, 22 d after drought and 3 h, 1 d, 3 d after rehydration). Progressive drought treatment for 10 d significantly increased MDA, proline, EL, O-2(center dot-), and activities of SOD and POD, while rehydration for 1-3 d caused decline of these parameters. Conversely, drought stress decreased LWC and chlorophyll content, while rehydration increased LWC quickly and chlorophyll content gradually. The present study indicated that the purslane has a great capability to cope with drought stress and activate many physiological mechanisms, which allow more efficient recovery during rehydration. These results provided the first physiological evidences that the harvest time for purslane was within 5-10 d of drought or 1-3 d after rehydration. (C) 2015 Elsevier B.V. All rights reserved.
资助项目	"the Hundred Talents Program", the Knowledge Innovative Key Program of Chinese Academy of Sciences[Y154761O01076] ; "the Hundred Talents Program", the Knowledge Innovative Key Program of Chinese Academy of Sciences[Y329631O0263]
WOS研究方向	Agriculture
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000364251300028
内容类型	期刊论文
源URL	[http://202.127.146.157/handle/2RYDP1HH/190]
专题	中国科学院武汉植物园
通讯作者	Chan, Zhulong
作者单位	1.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Plant Germplasm Enhancement & Specialty A, Wuhan 430074, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Jin, Rui,Shi, Haitao,Han, Chunyu,et al. Physiological changes of purslane (Portulaca oleracea L.) after progressive drought stress and rehydration[J]. SCIENTIA HORTICULTURAE,2015,194:215-221.
APA	Jin, Rui,Shi, Haitao,Han, Chunyu,Zhong, Bao,Wang, Qing,&Chan, Zhulong.(2015).Physiological changes of purslane (Portulaca oleracea L.) after progressive drought stress and rehydration.SCIENTIA HORTICULTURAE,194,215-221.
MLA	Jin, Rui,et al."Physiological changes of purslane (Portulaca oleracea L.) after progressive drought stress and rehydration".SCIENTIA HORTICULTURAE 194(2015):215-221.