全球变化知识资源中心

Knowledge Resources Center for Global Change


Email:
Passwd
验证:
	换一张
Have you forgotten your password? Stay signed in Log In

globalchange > 过去全球变化的重建

DOI:	10.1371/journal.pone.0085266
论文题名:	Karyotypic Changes through Dysploidy Persist Longer over Evolutionary Time than Polyploid Changes
作者:	Marcial Escudero; Santiago Martín-Bravo; Itay Mayrose; Mario Fernández-Mazuecos; Omar Fiz-Palacios; Andrew L. Hipp; Manuel Pimentel; Pedro Jiménez-Mejías; Virginia Valcárcel; Pablo Vargas; Modesto Luceño
刊名:	PLOS ONE
ISSN:	1932-6203
出版年:	2014
发表日期:	2014-1-9
卷:	9, 期:1
语种:	英语
英文关键词:	Chromosomes ; Polyploidy ; Chromosomal disorders ; Flowering plants ; Phylogenetics ; Paleogenetics ; Aneuploidy ; Speciation
英文摘要:	Chromosome evolution has been demonstrated to have profound effects on diversification rates and speciation in angiosperms. While polyploidy has predated some major radiations in plants, it has also been related to decreased diversification rates. There has been comparatively little attention to the evolutionary role of gains and losses of single chromosomes, which may or not entail changes in the DNA content (then called aneuploidy or dysploidy, respectively). In this study we investigate the role of chromosome number transitions and of possible associated genome size changes in angiosperm evolution. We model the tempo and mode of chromosome number evolution and its possible correlation with patterns of cladogenesis in 15 angiosperm clades. Inferred polyploid transitions are distributed more frequently towards recent times than single chromosome gains and losses. This is likely because the latter events do not entail changes in DNA content and are probably due to fission or fusion events (dysploidy), as revealed by an analysis of the relationship between genome size and chromosome number. Our results support the general pattern that recently originated polyploids fail to persist, and suggest that dysploidy may have comparatively longer-term persistence than polyploidy. Changes in chromosome number associated with dysploidy were typically observed across the phylogenies based on a chi-square analysis, consistent with these changes being neutral with respect to diversification.
URL:	http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0085266&type=printable
Citation statistics:
资源类型:	期刊论文
标识符:	http://119.78.100.158/handle/2HF3EXSE/18973
Appears in Collections:	过去全球变化的重建影响、适应和脆弱性科学计划与规划气候变化与战略全球变化的国际研究计划气候减缓与适应气候变化事实与影响

Files in This Item:	Download All

File Name/ File Size	Content Type	Version	Access	License
journal.pone.0085266.PDF（156KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	View Download

作者单位:

Molecular Biology and Biochemical Engineering, Pablo de Olavide University, Seville, Spain;Herbarium, The Morton Arboretum, Lisle, Illinois, United States of America;Botany, The Field Museum, Chicago, Illinois, United States of America;Molecular Biology and Biochemical Engineering, Pablo de Olavide University, Seville, Spain;Molecular Biology and Ecology of Plants, Tel Aviv University, Tel Aviv, Israel;Biodiversity and Conservation, Real Jardín Botánico CSIC, Madrid, Spain;Systematic Biology, Uppsala University, Uppsala, Sweden;Herbarium, The Morton Arboretum, Lisle, Illinois, United States of America;Botany, The Field Museum, Chicago, Illinois, United States of America;Plant and Animal Biology and Ecology, University of A Coruña, A Coruña, Spain;Molecular Biology and Biochemical Engineering, Pablo de Olavide University, Seville, Spain;Biodiversity and Conservation, Real Jardín Botánico CSIC, Madrid, Spain;Biology, Universidad Autónoma de Madrid, Madrid, Spain;Biodiversity and Conservation, Real Jardín Botánico CSIC, Madrid, Spain;Molecular Biology and Biochemical Engineering, Pablo de Olavide University, Seville, Spain

Recommended Citation:

Marcial Escudero,Santiago Martín-Bravo,Itay Mayrose,et al. Karyotypic Changes through Dysploidy Persist Longer over Evolutionary Time than Polyploid Changes[J]. PLOS ONE,2014-01-01,9(1)

Service
	Recommend this item
	Sava as my favorate item
	Show this item's statistics
	Export Endnote File
Google Scholar
	Similar articles in Google Scholar
	[Marcial Escudero]'s Articles
	[Santiago Martín-Bravo]'s Articles
	[Itay Mayrose]'s Articles
百度学术
	Similar articles in Baidu Scholar
	[Marcial Escudero]'s Articles
	[Santiago Martín-Bravo]'s Articles
	[Itay Mayrose]'s Articles
CSDL cross search
	Similar articles in CSDL Cross Search
	[Marcial Escudero]‘s Articles
	[Santiago Martín-Bravo]‘s Articles
	[Itay Mayrose]‘s Articles
Related Copyright Policies
Null
收藏/分享