干旱区生态环境知识资源中心(Arid): Fairy circles in Namibia are assembled from genetically distinct grasses

Arid

DOI	10.1038/s42003-020-01431-0
	Fairy circles in Namibia are assembled from genetically distinct grasses
	Kappel, Christian; Illing, Nicola; Huu, Cuong Nguyen; Barger, Nichole N.; Cramer, Michael D.; Lenhard, Michael; Midgley, Jeremy J.
通讯作者	Lenhard, M (corresponding author), Univ Potsdam, Inst Biochem & Biol, Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany. ; Midgley, JJ (corresponding author), Univ Cape Town, Dept Biol Sci, ZA-7701 Rondebosch, South Africa.
来源期刊	COMMUNICATIONS BIOLOGY
EISSN	2399-3642
出版年	2020
卷号	3 期号:1
英文摘要	Fairy circles are striking regularly sized and spaced, bare circles surrounded by Stipagrostis grasses that occur over thousands of square kilometres in Namibia. The mechanisms explaining their origin, shape, persistence and regularity remain controversial. One hypothesis for the formation of vegetation rings is based on the centrifugal expansion of a single individual grass plant, via clonal growth and die-back in the centre. Clonality could explain FC origin, shape and long-term persistence as well as their regularity, if one clone competes with adjacent clones. Here, we show that for virtually all tested fairy circles the periphery is not exclusively made up of genetically identical grasses, but these peripheral grasses belong to more than one unrelated genet. These results do not support a clonal explanation for fairy circles. Lack of clonality implies that a biological reason for their origin, shape and regularity must emerge from competition between near neighbor individuals within each fairy circle. Such lack of clonality also suggests a mismatch between longevity of fairy circles versus their constituent plants. Furthermore, our findings of lack of clonality have implications for some models of spatial patterning of fairy circles that are based on self-organization. Christian Kappel et al. examine the genetic composition of fairy circles, regular circular patterns of grasses in the Namib Desert, using ddRAD-seq. They find that these grasses are made up of multiple unrelated genets rather than genetically identical grasses, suggesting non-clonality.
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000594955800001
WOS关键词	DESERT ; HYPOTHESES ; DISCOVERY ; GRASSLAND ; FORMAT ; PLANTS
WOS类目	Biology ; Multidisciplinary Sciences
WOS研究方向	Life Sciences & Biomedicine - Other Topics ; Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/348787
作者单位	[Kappel, Christian; Huu, Cuong Nguyen; Lenhard, Michael] Univ Potsdam, Inst Biochem & Biol, Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany; [Illing, Nicola] Univ Cape Town, Dept Mol & Cell Biol, ZA-7701 Rondebosch, South Africa; [Barger, Nichole N.] Univ Colorado, Dept Ecol & Evolutionary Biol, 1900 Pleasant St, Boulder, CO 80302 USA; [Cramer, Michael D.; Midgley, Jeremy J.] Univ Cape Town, Dept Biol Sci, ZA-7701 Rondebosch, South Africa
推荐引用方式 GB/T 7714	Kappel, Christian,Illing, Nicola,Huu, Cuong Nguyen,et al. Fairy circles in Namibia are assembled from genetically distinct grasses[J],2020,3(1).
APA	Kappel, Christian.,Illing, Nicola.,Huu, Cuong Nguyen.,Barger, Nichole N..,Cramer, Michael D..,...&Midgley, Jeremy J..(2020).Fairy circles in Namibia are assembled from genetically distinct grasses.COMMUNICATIONS BIOLOGY,3(1).
MLA	Kappel, Christian,et al."Fairy circles in Namibia are assembled from genetically distinct grasses".COMMUNICATIONS BIOLOGY 3.1(2020).