Effects of Whole-root and Half-root Water Stress on Gas Exchange and Chlorophyll Fluorescence Parameters in Apple Trees

doi:10.21273/JASHS.138.5.395

	Effects of Whole-root and Half-root Water Stress on Gas Exchange and Chlorophyll Fluorescence Parameters in Apple Trees
	Yuan, Jinhong 1,2; Xu, Man 1,2; Duan, Wei 1,2; Fan, Peige 1,2; Li, Shaohua
	2013
发表期刊	JOURNAL OF THE AMERICAN SOCIETY FOR HORTICULTURAL SCIENCE
ISSN	0003-1062
卷号	138 期号:5 页码:395-402
摘要	The responses of photosynthesis, chlorophyll fluorescence, and de-epoxidation state of the xanthophyll cycle pigments (DEPS) of micropropagated apple trees (Mains xdomestica) were investigated under whole-root water stress (WRS) and half-root water stress (HRS) induced by polyethylene glycol 6000 to simulate whole and partial root zone drying. Compared with control plants without water stress, plants under WRS and HRS exhibited reduced leaf net photosynthetic rate (P-n) and stomatal conductance (g(S)) with a greater reduction in WRS than in HRS plants. However, intercellular CO2 concentration (Ci) increased under WRS as water stress was prolonged, signifying a non-stomatal limitation of P-n. Regarding HRS, decreased P-n was mainly the result of a stomatal limitation explained by a relatively low Ci. Changes in photosynthesis and chlorophyll parameters indicate that severe and slight damage occurred to the photosynthetic apparatus of WRS and HRS leaves, respectively, starting at Day 3 after initiating water stress. This damage was not evident on the donor side but was expressed as a reduced capacity of the acceptor side of the photosystem II reaction centers. To prevent damage from excess light, the DEPS of WRS leaf increased. Decreased g(S) could explain reduced water use under an irrigation strategy of partial root zone drying in fruit trees.
学科领域	Horticulture
DOI	10.21273/JASHS.138.5.395
收录类别	SCI
语种	英语
WOS关键词	MEHLER-PEROXIDASE REACTION ; XANTHOPHYLL CYCLE ; USE EFFICIENCY ; PHOTOSYSTEM-II ; HOT PEPPER ; LEAVES ; RESPONSES ; PLANTS ; PHOTOINHIBITION ; PHOTOCHEMISTRY
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000333230300009
出版者	AMER SOC HORTICULTURAL SCIENCE
文献子类	Article
出版地	ALEXANDRIA
EISSN	2327-9788
资助机构	National Natural Science Foundation of China(National Natural Science Foundation of China (NSFC))
作者邮箱	Yuan, Jinhong/AAF-7715-2019
作品OA属性	gold
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/28015
专题	中科院北方资源植物重点实验室
作者单位	1.Chinese Acad Sci, Key Lab Plant Germplasm Enhancement & Special Agr, Wuhan Bot Garden, Wuhan 430074, Peoples R China 2.Chinese Acad Sci, Beijing Key Lab Grape Sci & Enol, Inst Bot, Beijing 100093, Peoples R China 3.Chinese Acad Sci, Key Lab Plant Resource Sci, Inst Bot, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Yuan, Jinhong,Xu, Man,Duan, Wei,et al. Effects of Whole-root and Half-root Water Stress on Gas Exchange and Chlorophyll Fluorescence Parameters in Apple Trees[J]. JOURNAL OF THE AMERICAN SOCIETY FOR HORTICULTURAL SCIENCE,2013,138(5):395-402.
APA	Yuan, Jinhong,Xu, Man,Duan, Wei,Fan, Peige,&Li, Shaohua.(2013).Effects of Whole-root and Half-root Water Stress on Gas Exchange and Chlorophyll Fluorescence Parameters in Apple Trees.JOURNAL OF THE AMERICAN SOCIETY FOR HORTICULTURAL SCIENCE,138(5),395-402.
MLA	Yuan, Jinhong,et al."Effects of Whole-root and Half-root Water Stress on Gas Exchange and Chlorophyll Fluorescence Parameters in Apple Trees".JOURNAL OF THE AMERICAN SOCIETY FOR HORTICULTURAL SCIENCE 138.5(2013):395-402.

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