干旱区生态环境知识资源中心(Arid): Desert-like badlands and surrounding (semi-)dry grasslands of Central Germany promote small-scale phenotypic and genetic differentiation in Thymus praecox

Arid

DOI	10.1002/ece3.5844
	Desert-like badlands and surrounding (semi-)dry grasslands of Central Germany promote small-scale phenotypic and genetic differentiation in Thymus praecox
	Karbstein, Kevin 1,2,3; Tomasello, Salvatore 3; Prinz, Kathleen 1,2,4
通讯作者	Karbstein, Kevin
来源期刊	ECOLOGY AND EVOLUTION
ISSN	2045-7758
出版年	2019
卷号	9 期号:24 页码:14066-14084
英文摘要	Environmental heterogeneity among sites can generate phenotypic and genetic variation facilitating differentiation and microevolution of plant populations. Badlands are desert-like, predominantly vegetation-poor habitats often embedded in (semi-)dry grasslands. The desert-like conditions of badlands demand extreme adaptation of plants, that is, phenotypic modifications in short-term and/or natural adaptation in long-term. However, detailed knowledge is missing about both plant phenotypic and genetic differentiation in this unique and widely occurring habitat type. The present study focused on the largest known badlands systems in Central Europe located in the Drei Gleichen region, a designated nature conservation area in Central Germany. Locations were suitable for this study in terms of having co-occurring badlands and (semi-)dry grassland habitats (sites) occupied by the pioneer plant Thymus praecox. Here, we studied the environmental preferences, morphological and functional trait variation, and genetic variation using microsatellite markers of T. praecox. Results revealed significant, mainly site-dependent environmental, phenotypic, and genetic differentiation. In general, individuals in badlands are shorter in height and have lower patch sizes (length x width), relative growth rates, and smaller stomata. The PCA additionally unveiled slightly increased leaf robustness, trichome density, decreased stomatal conductance, fewer females, and earlier phenology in badlands. We interpret differentiation patterns as adaptive responses to light, temperature, drought, and nutrient stress conditions supported by reviewed literature. Genetic differentiation was strongest between local badlands and grassland sites, and clearly weaker among locations and between sites (in total) as indicated by G(ST), AMOVA, PCoA, and population structure. Our study supports the importance of small-scale microhabitat conditions as a driver of microevolutionary processes, and the population's need for sufficient phenotypic plasticity and genetic resources to deal with environmental changes. We demonstrated that badlands are an appropriate model system for testing plant response to extreme habitats and that more research is needed on these fascinating landscapes.
英文关键词	badlands Central Germany genetic differentiation grasslands phenotypic differentiation Thymus praecox
类型	Article
语种	英语
国家	Germany
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000500059100001
WOS关键词	PLANT FUNCTIONAL TRAITS ; ESSENTIAL OIL ; WATER-STRESS ; LEAF-AREA ; STOMATAL DEVELOPMENT ; CHEMICAL-COMPOSITION ; VEGETATION COVER ; DROUGHT STRESS ; CLIMATE-CHANGE ; POPULATION
WOS类目	Ecology ; Evolutionary Biology
WOS研究方向	Environmental Sciences & Ecology ; Evolutionary Biology
EI主题词	2019-12-02
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311478
作者单位	1.Friedrich Schiller Univ Jena, Inst Ecol & Evolut Plants, Systemat Bot Herbarium Haussknecht, Jena, Germany; 2.Friedrich Schiller Univ Jena, Bot Garden, Jena, Germany; 3.Univ Goettingen, Dept Systemat Biodivers & Evolut Plants Herbarium, Albrecht von Haller Inst Plant Sci, Untere Karspuele 2, D-37073 Gottingen, Germany; 4.Landschaftspflegeverband Suedharz Kyffhaeuser eV, Nordhausen, Germany
推荐引用方式 GB/T 7714	Karbstein, Kevin,Tomasello, Salvatore,Prinz, Kathleen. Desert-like badlands and surrounding (semi-)dry grasslands of Central Germany promote small-scale phenotypic and genetic differentiation in Thymus praecox[J],2019,9(24):14066-14084.
APA	Karbstein, Kevin,Tomasello, Salvatore,&Prinz, Kathleen.(2019).Desert-like badlands and surrounding (semi-)dry grasslands of Central Germany promote small-scale phenotypic and genetic differentiation in Thymus praecox.ECOLOGY AND EVOLUTION,9(24),14066-14084.
MLA	Karbstein, Kevin,et al."Desert-like badlands and surrounding (semi-)dry grasslands of Central Germany promote small-scale phenotypic and genetic differentiation in Thymus praecox".ECOLOGY AND EVOLUTION 9.24(2019):14066-14084.