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学科主题: 生物科学::植物学
题名: Genome size variation among and within Ophiopogoneae species by flow cytometric analysis
作者: Wang, GY (Wang, Guangyan)1, 2, 3, 4, 5; Meng, Y (Meng, Ying)2, 3; Yang, YP (Yang, Yongping)2, 3, 4
通讯作者: Yang, YP
关键词: NUCLEAR-DNA CONTENT ; FLOWERING PLANTS ; C-VALUES ; INTRASPECIFIC VARIATION ; CHROMOSOME-NUMBERS ; EVOLUTION ; ANGIOSPERMS ; MODEL ; POPULATIONS ; MECHANISMS
刊名: BRAZILIAN JOURNAL OF BOTANY
发表日期: 2017
DOI: 10.1007/s40415-016-0358-8
卷: 40, 期:2, 页:529-537
收录类别: SCI
合作性质: 国内
文章类型: Article
类目[WOS]: Plant Sciences ; Plant Sciences
研究领域[WOS]: Plant Sciences
英文摘要: Genome size variation in a taxonomic group reflects evolutionary processes. DNA contents of Ophiopogoneae (40 populations of 31 species) were estimated by flow cytometry. Ploidy levels of Ophiopogon (ten species), Liriope (two species), and Peliosanthes (three species) were determined based on the DNA contents. The genus Peliosanthes showed significant larger genome sizes than Ophiopogon (P < 0.01), and Ophiopogon also significant larger than Liriope (P < 0.05). Intraspecific variation in genome size was mainly chromosome difference. The ITS sequence phylogeny splitted Ophiopogon into two clades, clade I comprising sect. Ophiopogon with diploids and tetraploids, and clade II including transitional species and sects. Ophiopogon and Peliosanthoides with diploids. The trend seemed to increase in genome size from Ophiopogon sect. Peliosanthoides (13.45 pg) to Ophiopogon sect. Ophiopogon (14.27 pg). Polyploidization may be evolutionary direction of Ophiopogon. Our results also suggested that the 'increase' hypothesis for genome size evolutionary may hold true in the genus Ophiopogon.
语种: 英语
WOS记录号: WOS:000405085900016
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/8200
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Anqing Normal Univ, Prov Key Lab Biodivers Study & Ecol Conservat Sou, Sch Life Sci, Anqing 246133, Anhui, Peoples R China.
2.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Div & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China.
3.Chinese Acad Sci, Kunming Inst Bot, Plant Germplasm & Genom Ctr, Germplasm Bank Wild Species, Kunming 650201, Yunnan, Peoples R China.
4.Chinese Acad Sci, Kunming Inst Bot, Inst Tibetan Plateau Res Kunming, Kunming 650201, Yunnan, Peoples R China.
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China.

Recommended Citation:
Wang, GY ,Meng, Y ,Yang, YP . Genome size variation among and within Ophiopogoneae species by flow cytometric analysis[J]. BRAZILIAN JOURNAL OF BOTANY,2017,40(2):529-537.
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