Genome origins in Leymus (Poaceae: Triticeae): evidence of maternal and paternal progenitors and implications for reticulate evolution

doi:10.1007/s00606-010-0341-y

	Genome origins in Leymus (Poaceae: Triticeae): evidence of maternal and paternal progenitors and implications for reticulate evolution
	Zhou, Xincheng; Yang, Xinming; Li, Xiuquan; Li, Lihui
刊名	PLANT SYSTEMATICS AND EVOLUTION
	2010
卷号	289 期号:3-4 页码:165-179
关键词	Leymus Psathyrostachys rpoA rbcL DMC1 Genome origins
ISSN号	0378-2697
DOI	10.1007/s00606-010-0341-y
通讯作者	Zhou, Xincheng
英文摘要	The polyploid Leymus species have the Ns nuclear genomes evolved from Psathyrostachys and the Xm nuclear genomes from unknown origins. Currently, little is known about the cytoplasmic genomes of Leymus, and the species of Psathyrostachys that transferred the Ns genome to Leymus remain elusive. To determine the origins of the plastid and nuclear genome for Leymus species, sequences of two chloroplast genes, rpoA and rbcL, and partial sequences of the nuclear gene DMC1 of 15 Leymus species were phylogenetically analyzed with those of 71 accessions belonging to 19 monogenomic genera in Triticeae. Both rpoA and rbcL sequences revealed that Psathyrostachys juncea, P. lanuginosa, and P. stoloniformis had close phylogenetic relationships with the Eurasian and one North American Leymus accessions, L. cinereus. Three American Leymus species, L. erianthus, L. triticoides, and L. innovatus had different maternal origins from Eurasian Leymus species. DMC1 sequences of Leymus were grouped into several phylogenetically distant clades indicating that either Ns or Xm originated from different lineages. These results suggest multiple contributions to the chloroplast as well as nuclear genomes in Leymus species. The comprehensive data indicate reticulate evolution in polyploid Leymus.
学科主题	Plant Sciences ; Evolutionary Biology ; EVOLUTIONARY BIOLOGY ; PLANT SCIENCES
语种	英语
出版者	SPRINGER WIEN
WOS记录号	WOS:000283471400005
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/5384]
专题	作物科学研究所_种质资源保存与研究中心
作者单位	Chinese Acad Agr Sci, Inst Crop Sci, Natl Key Facil Crop Gene Resources & Genet Improv, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Xincheng,Yang, Xinming,Li, Xiuquan,et al. Genome origins in Leymus (Poaceae: Triticeae): evidence of maternal and paternal progenitors and implications for reticulate evolution[J]. PLANT SYSTEMATICS AND EVOLUTION,2010,289(3-4):165-179.
APA	Zhou, Xincheng,Yang, Xinming,Li, Xiuquan,&Li, Lihui.(2010).Genome origins in Leymus (Poaceae: Triticeae): evidence of maternal and paternal progenitors and implications for reticulate evolution.PLANT SYSTEMATICS AND EVOLUTION,289(3-4),165-179.
MLA	Zhou, Xincheng,et al."Genome origins in Leymus (Poaceae: Triticeae): evidence of maternal and paternal progenitors and implications for reticulate evolution".PLANT SYSTEMATICS AND EVOLUTION 289.3-4(2010):165-179.