干旱区生态环境知识资源中心(Arid): Variation in leaf xeromorphism in the desert palm genus Washingtonia (Arecaceae)

Arid

DOI	10.1016/j.jaridenv.2020.104412
	Variation in leaf xeromorphism in the desert palm genus Washingtonia (Arecaceae)
	Perez, Vanessa; Arevalo, Andrea; Villanueva-Almanza, Lorena; Ezcurra, Exequiel
通讯作者	Villanueva-Almanza, L (corresponding author), Univ Calif Riverside, Dept Bot & Plant Sci, Riverside, CA 92521 USA.
来源期刊	JOURNAL OF ARID ENVIRONMENTS
ISSN	0140-1963
EISSN	1095-922X
出版年	2021
卷号	186
英文摘要	Washingtonia palms occur scattered in oases and canyons of the larger Sonoran Desert from lat. 24 degrees to lat. 34 degrees N. Northern oases have an arid temperate climate while those in the south experience seasonally dry, tropical conditions. A marked latitudinal cline in morphological characters has been described within the genus. We hypothesized that aridity-adapted leaf traits in Washingtonia palms, such as amphistomaty and isolaterality, could exhibit a predictable trend along the 1300-km-long gradient, allowing us to test whether the evolution of leaf xeromorphism is correlated with environmental aridity. We took measurements of anatomical and functional traits of leaves in 16 oases spanning the whole distributional range of the genus in Mexico and the US. Using regression models, we examined the response of specific leaf area, leaf greenness, delta C-13, stomatal size, and stomatal density to latitude, site, and landform. We used Principal Components Analysis and correlation matrices to identify bioclimatic variables that might be playing a role in the observed latitudinal patterns. Palms at northern sites have waxy, glaucous, thick, leaves and exhibit xeromorphic traits such as amphistomaty and isolaterality. Palms at more tropical sites have glossy green, thin leaves that do not show xeromorphic traits. Leaf xeromorphism, a morphological and physiological syndrome in Washingtonia palms, increases with aridity.
英文关键词	Arecaceae Amphistomaty Carbon isotope composition Epicuticular wax Stomata Xeromorphic syndrome
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000611829600003
WOS关键词	INTRASPECIFIC VARIATION ; ADAPTIVE SIGNIFICANCE ; STOMATAL DENSITY ; BAJA-CALIFORNIA ; GRADIENT ; AREA ; VARIABILITY ; MOISTURE ; TRAITS ; OASES
WOS类目	Ecology ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/347977
作者单位	[Perez, Vanessa; Arevalo, Andrea; Villanueva-Almanza, Lorena; Ezcurra, Exequiel] Univ Calif Riverside, Dept Bot & Plant Sci, Riverside, CA 92521 USA
推荐引用方式 GB/T 7714	Perez, Vanessa,Arevalo, Andrea,Villanueva-Almanza, Lorena,et al. Variation in leaf xeromorphism in the desert palm genus Washingtonia (Arecaceae)[J],2021,186.
APA	Perez, Vanessa,Arevalo, Andrea,Villanueva-Almanza, Lorena,&Ezcurra, Exequiel.(2021).Variation in leaf xeromorphism in the desert palm genus Washingtonia (Arecaceae).JOURNAL OF ARID ENVIRONMENTS,186.
MLA	Perez, Vanessa,et al."Variation in leaf xeromorphism in the desert palm genus Washingtonia (Arecaceae)".JOURNAL OF ARID ENVIRONMENTS 186(2021).