干旱区生态环境知识资源中心(Arid): Local adaptation along a sharp rainfall gradient occurs in a native Patagonian grass, Festuca pallescens, regardless of extensive gene flow

Arid

DOI	10.1016/j.envexpbot.2019.103933
	Local adaptation along a sharp rainfall gradient occurs in a native Patagonian grass, Festuca pallescens, regardless of extensive gene flow
	Lopez, Aldana S.1; Lopez, Dardo R.2; Caballe, Gonzalo 1; Siffredi, Guillermo L.1; Marchelli, Paula 1
通讯作者	Lopez, Aldana S.
来源期刊	ENVIRONMENTAL AND EXPERIMENTAL BOTANY
ISSN	0098-8472
EISSN	1873-7307
出版年	2020
卷号	171
英文摘要	Increasing global aridity combined with changing environmental conditions might cause irreparable alterations in arid and semiarid ecosystems. Knowledge of within-species genetic diversity and adaptive responses, especially along climatic gradients, becomes critical to inform management, conservation and restoration efforts. We combine the analysis of neutral (microsatellites) and adaptive divergence (morphological traits in common garden experiments) between populations along a sharp precipitation gradient in the native Patagonian grass Festuca pallescens, to disentangle patterns of local adaptation and genetic diversity. The identification of genetically based traits under divergent selection denoted the existence of local adaptation in spite of extensive gene flow. Two plant growth patterns were detected associated with two ecological regions. In arid environments, a trade-off between not resigning foliage production, and reducing the exposure to drying agents resulted in a compacted plant architecture; while in dry subhumid environments, populations exhibited a wide architecture to cope with rainfall and radiation interception. Increasing aridity and grazing might favor a compact plant architecture, and fragmentation might reduce genetic diversity across these environments. Being a widely distributed species, F. pallescens is an excellent model species to study adaptive responses across environmental gradients facing climate change predictions, especially in dryland rangelands that maintain multiple ecosystem functions.
英文关键词	Drylands Environmental gradients Festuca pallescens Local adaptation Neutral genetic diversity Phenotypic variation
类型	Article
语种	英语
国家	Argentina
收录类别	SCI-E
WOS记录号	WOS:000510111700012
WOS关键词	PHENOTYPIC PLASTICITY ; CLIMATE-CHANGE ; POPULATION DIFFERENTIATION ; DIVERGENCE ; DIVERSITY ; DROUGHT ; MARKERS ; RANGE ; ANDES ; RESTORATION
WOS类目	Plant Sciences ; Environmental Sciences
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314412
作者单位	1.Consejo Nacl Invest Cient & Tecn, INTA, IFAB, Inst Invest Forestales & Agropecuarias Bariloche, Modesta Victoria 4450, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina; 2.INTA, EF Villa Dolores, Cordoba, Argentina
推荐引用方式 GB/T 7714	Lopez, Aldana S.,Lopez, Dardo R.,Caballe, Gonzalo,et al. Local adaptation along a sharp rainfall gradient occurs in a native Patagonian grass, Festuca pallescens, regardless of extensive gene flow[J],2020,171.
APA	Lopez, Aldana S.,Lopez, Dardo R.,Caballe, Gonzalo,Siffredi, Guillermo L.,&Marchelli, Paula.(2020).Local adaptation along a sharp rainfall gradient occurs in a native Patagonian grass, Festuca pallescens, regardless of extensive gene flow.ENVIRONMENTAL AND EXPERIMENTAL BOTANY,171.
MLA	Lopez, Aldana S.,et al."Local adaptation along a sharp rainfall gradient occurs in a native Patagonian grass, Festuca pallescens, regardless of extensive gene flow".ENVIRONMENTAL AND EXPERIMENTAL BOTANY 171(2020).