干旱区生态环境知识资源中心(Arid): Variation in number of root tips influences survival in competition with an invasive grass

Arid

DOI	10.1016/j.jaridenv.2020.104189
	Variation in number of root tips influences survival in competition with an invasive grass
	Foxx, Alicia J.; Kramer, Andrea T.
通讯作者	Foxx, AJ
来源期刊	JOURNAL OF ARID ENVIRONMENTS
ISSN	0140-1963
EISSN	1095-922X
出版年	2020
卷号	179
英文摘要	Roots are the first line for interactions between plants and the soil environment. Understanding root traits has important implications for species used in arid land restoration. Intraspecific root trait variation can have important competitive and performance ramifications that can impact the ability of a population to establish. So, we tested whether populations exhibit variation in number of root tips and whether root tip variation leads to differential interaction outcomes. We grew seedlings of eight Elymus elymoides populations from the western United States in vitro, and selected two populations with contrasting number of root tips for a greenhouse competition study with an invasive annual grass (Bromus tectorum) to assess whether differences in number of root tips affected Elymus elymoides seedling performance under competition. We found significant variation in number of root tips by population and the population with the greatest number of root tips ((x) over bar = 16.3 +/- 8.9) had a higher proportion of individuals survive longer in competition with Bromus tectorum than the population with fewer root tips ((x) over bar = 7.5 +/- 3.1). These results highlight the need for research on intraspecific trait variation in roots for species commonly used in restoration projects to help guide the selection of appropriate source material in dry environments.
英文关键词	Bromus tectorum Elymus elymoides Intraspecific trait variation Lateral roots
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000533505000013
WOS关键词	PLANT ; TRAITS ; ESTABLISHMENT ; RESTORATION
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/2XILL650/324471
作者单位	[Foxx, Alicia J.] Northwestern Univ, Dept Plant Biol & Conservat, 2205 Tech Dr, Evanston, IL 60201 USA; [Foxx, Alicia J.; Kramer, Andrea T.] Negaunee Inst Plant Conservat Sci & Act, Chicago Bot Garden, 1000 Lake Cook Rd, Glencoe, IL 60022 USA
推荐引用方式 GB/T 7714	Foxx, Alicia J.,Kramer, Andrea T.. Variation in number of root tips influences survival in competition with an invasive grass[J],2020,179.
APA	Foxx, Alicia J.,&Kramer, Andrea T..(2020).Variation in number of root tips influences survival in competition with an invasive grass.JOURNAL OF ARID ENVIRONMENTS,179.
MLA	Foxx, Alicia J.,et al."Variation in number of root tips influences survival in competition with an invasive grass".JOURNAL OF ARID ENVIRONMENTS 179(2020).