干旱区生态环境知识资源中心(Arid): Contrasting adaptation of xylem to dehydration in two Vitis vinifera L. sub-species

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DOI	10.5073/vitis.2020.59.53-61
	Contrasting adaptation of xylem to dehydration in two Vitis vinifera L. sub-species
	Pouzoulet, J.1,2; Pivovaroff, A. L.1,3; Scudiero, E.4; De Guzman, M. E.1; Rolshausen, P. E.1; Santiago, L. S.1
通讯作者	Pouzoulet, J.
来源期刊	VITIS
ISSN	0042-7500
出版年	2020
卷号	59 期号:2 页码:53-61
英文摘要	Xylem hydraulic properties of agricultural crop species can be linked to their region of origin, but because crop systems are often irrigated to reach optimum quality and yield, key differences in drought resistance are not often considered. We investigated how hydraulic conductivity and xylem vulnerability to drought-induced cavitation of two grapevine cultivars correspond to their centers of domestication with 'Merlot' (Vitis vinifera subspecies occidentalis) having been domesticated in a temperate forest region, and 'Thompson Seedless' (Vitis vinifera subspecies orientalis) domesticated in a semi-arid region. We used anatomical measurements and xylem vulnerability curves to evaluate hydraulic traits and drought resistance. Our results showed that 'Thompson Seedless' was significantly more vulnerable to drought-induced cavitation than 'Merlot'. Bench dehydration produced significantly different estimations of xylem vulnerability to cavitation in each cultivar. This result was consistent with anatomical measurement, with 'Thompson Seedless' stems having greater maximum stem-specific hydraulic conductivity, more vessels, higher vessel density and a greater lumen fraction than 'Merlot'. The relatively large amount of xylem vessels and lumen area in 'Thompson Seedless' is consistent with domestication in a semi-arid habitat where a greater number and size diversity of xylem vessels would be needed to transport water and meet evaporative demand as opposed to cultivars that were domesticated in temperate forest regions like 'Merlot'. These differences appear to expose 'Thompson Seedless' to high xylem vulnerability to cavitation.
英文关键词	center of domestication drought resistance grapevine hydraulic conductivity Vitis vinifera vulnerability curve wine xylem
类型	Article
语种	英语
国家	USA ; France
收录类别	SCI-E
WOS记录号	WOS:000524972000002
WOS关键词	APPLIED WATER AMOUNTS ; HYDRAULIC CONDUCTIVITY ; GENETIC DIVERSITY ; CLIMATE-CHANGE ; DEFICIT IRRIGATION ; DROUGHT SURVIVAL ; TREE MORTALITY ; GRAPEVINE ; VULNERABILITY ; EMBOLISM
WOS类目	Horticulture
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315692
作者单位	1.Univ Calif Riverside, Bot & Plant Sci, Riverside, CA 92521 USA; 2.INRA, Inst Sci Vigne & Vin, UMR Ecophysiol & Genom Fonct Vigne, F-33882 Villenave Domon, France; 3.Pacific Northwest Natl Lab, Richland, WA 99352 USA; 4.USDA ARS, US Salin Lab, 4500 Glenwood Dr, Riverside, CA 92501 USA
推荐引用方式 GB/T 7714	Pouzoulet, J.,Pivovaroff, A. L.,Scudiero, E.,et al. Contrasting adaptation of xylem to dehydration in two Vitis vinifera L. sub-species[J],2020,59(2):53-61.
APA	Pouzoulet, J.,Pivovaroff, A. L.,Scudiero, E.,De Guzman, M. E.,Rolshausen, P. E.,&Santiago, L. S..(2020).Contrasting adaptation of xylem to dehydration in two Vitis vinifera L. sub-species.VITIS,59(2),53-61.
MLA	Pouzoulet, J.,et al."Contrasting adaptation of xylem to dehydration in two Vitis vinifera L. sub-species".VITIS 59.2(2020):53-61.