干旱区生态环境知识资源中心(Arid): Dispersal and genetic differentiation of Syntrichia caninervis populations across different desert regions in China

Arid

DOI	10.1111/plb.12979
	Dispersal and genetic differentiation of Syntrichia caninervis populations across different desert regions in China
	Yin, B.1,2; Zhang, Y.2; Zhang, T.1; Lin, L.1; Lou, A.1
通讯作者	Lou, A.
来源期刊	PLANT BIOLOGY
ISSN	1435-8603
EISSN	1438-8677
出版年	2019
卷号	21 期号:4 页码:706-714
英文摘要	The moss Syntrichia caninervis is widely distributed in cool temperate and cold deserts where environmental pressures create a dependence on asexual reproduction (fragment reproduction). However, when compared to sporophyte-producing mosses, there is a lack of evidence to support the capacity of drought-tolerant mosses that predominantly fragment and produce protonema to disperse over long distances. We used 20 microsatellite loci to study genetic variation and structure in six populations (five natural populations and one population from a regeneration site) in three contrasting and widely separated regions of China. The genetic diversity and expected heterozygosity were lower in populations from the Tengger Desert than in populations from the other regions. Using PCoA, UPGMA and Structure analysis, the genetic grouping divided the three regions into three distinct groups. This may indicate that in regions where S. caninervis reproduces predominantly asexually, propagules are spread mainly by short-distance dispersal. The genetic diversity of the population from the regeneration site in the Tengger Desert was slightly higher than that of the nearby, naturally occurring population, and included some input from the Pamir Plateau almost 2,300 km to the west, suggesting long-distance dispersal of S. caninervis propagules across the region. Predominantly asexually reproducing populations of S. caninervis are mainly dependent on short-distance dispersal. Long-distance dispersal of S. caninervis propagules across the region is difficult. Establishment of populations with dominant asexual reproduction will eventually result in genetic differentiation.
英文关键词	Asexual reproduction bryophyte free niche genetic diversity haploid
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000473626000016
WOS关键词	MULTILOCUS GENOTYPE DATA ; BIOLOGICAL SOIL CRUSTS ; MOJAVE DESERT ; SEX EXPRESSION ; BIOCHEMICAL CHARACTERISTICS ; NORTHERN-HEMISPHERE ; LEAF REGENERATION ; VASCULAR PLANTS ; MOSS ; SIZE
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
来源机构	中国科学院新疆生态与地理研究所 ; 北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218009
作者单位	1.Beijing Normal Univ, Coll Life Sci, Minist Educ, Key Lab Biodiversty Sci & Ecol Engn, Beijing 100875, Peoples R China; 2.Xinjiang Inst Ecol & Geog, CAS Key Lab Biogeog & Bioresource Arid Land, Urumqi, Peoples R China
推荐引用方式 GB/T 7714	Yin, B.,Zhang, Y.,Zhang, T.,et al. Dispersal and genetic differentiation of Syntrichia caninervis populations across different desert regions in China[J]. 中国科学院新疆生态与地理研究所, 北京师范大学,2019,21(4):706-714.
APA	Yin, B.,Zhang, Y.,Zhang, T.,Lin, L.,&Lou, A..(2019).Dispersal and genetic differentiation of Syntrichia caninervis populations across different desert regions in China.PLANT BIOLOGY,21(4),706-714.
MLA	Yin, B.,et al."Dispersal and genetic differentiation of Syntrichia caninervis populations across different desert regions in China".PLANT BIOLOGY 21.4(2019):706-714.