干旱区生态环境知识资源中心(Arid): Phylogenetic signal and climatic niche of stem photosynthesis in the mediterranean and desert regions of California and Baja California Peninsula

Arid

DOI	10.1002/ajb2.1572
	Phylogenetic signal and climatic niche of stem photosynthesis in the mediterranean and desert regions of California and Baja California Peninsula
	Avila-Lovera, Eleinis; Garcillan, Pedro P.
通讯作者	Avila-Lovera, E
来源期刊	AMERICAN JOURNAL OF BOTANY
ISSN	0002-9122
EISSN	1537-2197
英文摘要	PREMISE Woody plants with photosynthetic stems are common in the drylands of the world; however, we know little about the origin(s) and geographical distribution of photosynthetic stems. Therefore, we set to answer the following questions: (1) Is stem photosynthesis phylogenetically conserved? (2) Do green-stemmed and fleshy-stemmed species have identifiable climatic niches? METHODS We mapped the photosynthetic stem trait onto a phylogeny of 228 mediterranean and desert species and calculated indices of phylogenetic signal and created climatic niche models of 28 species belonging to three groups: green, fleshy, and green-and-fleshy stemmed species. RESULTS We found phylogenetic signal in the fleshy stem trait, but not in the green stem trait. Fleshy-stemmed species occupy areas associated with high isothermality, high precipitation seasonality, and high mean temperature of the wettest quarter, whereas green-stemmed species occupy areas associated with high precipitation of driest month, high precipitation of coldest quarter, high mean diurnal temperature range and high maximum temperature of the warmest month. CONCLUSIONS Despite the fact that both photosynthetic stem types help cope with water shortage, having fleshy stems allows plants to cope with greater precipitation seasonality than is possible with green stems. Green stems require a lot of water to be stored in the soil to maintain net photosynthesis during the dry season, so they inhabit areas with higher and more predictable precipitation.
英文关键词	corticular photosynthesis environmental niche models MaxEnt photosynthetic stems sarcocaulescent stem net photosynthesis stem recycling photosynthesis subtropical drylands
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000595810000001
WOS关键词	CO2 FIXATION ; EVOLUTION ; SUCCULENT ; PATTERNS ; EXCHANGE ; ANATOMY ; TROPICS ; STORAGE ; LEAVES ; XYLEM
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/2XILL650/328571
作者单位	[Avila-Lovera, Eleinis] Chapman Univ, Schimd Coll Sci & Technol, One Univ Dr, Orange, CA 92866 USA; [Garcillan, Pedro P.] Ctr Invest Biol Noroeste, Av Inst Politecn Nacl 195, La Paz 23096, Bcs, Mexico
推荐引用方式 GB/T 7714	Avila-Lovera, Eleinis,Garcillan, Pedro P.. Phylogenetic signal and climatic niche of stem photosynthesis in the mediterranean and desert regions of California and Baja California Peninsula[J].
APA	Avila-Lovera, Eleinis,&Garcillan, Pedro P..
MLA	Avila-Lovera, Eleinis,et al."Phylogenetic signal and climatic niche of stem photosynthesis in the mediterranean and desert regions of California and Baja California Peninsula".AMERICAN JOURNAL OF BOTANY