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globalchange > 过去全球变化的重建

DOI:	10.1371/journal.pone.0164584
论文题名:	Multi-Phase US Spread and Habitat Switching of a Post-Columbian Invasive, Sorghum halepense
作者:	U. Uzay Sezen; Jacob N. Barney; Daniel Z. Atwater; Gary A. Pederson; Jeffrey F. Pederson; J. Mike Chandler; T. Stan Cox; Sheila Cox; Peter Dotray; David Kopec; Steven E. Smith; Jill Schroeder; Steven D. Wright; Yuannian Jiao; Wenqian Kong; Valorie Goff; Susan Auckland; Lisa K. Rainville; Gary J. Pierce; Cornelia Lemke; Rosana Compton; Christine Phillips; Alexandra Kerr; Matthew Mettler; Andrew H. Paterson
刊名:	PLOS ONE
ISSN:	1932-6203
出版年:	2016
发表日期:	2016-10-18
卷:	11, 期:10
语种:	英语
英文关键词:	Population genetics ; Sorghum ; Phylogeography ; Gene flow ; Phylogenetic analysis ; Invasive species ; Genetic loci ; Weeds
英文摘要:	Johnsongrass (Sorghum halepense) is a striking example of a post-Columbian founder event. This natural experiment within ecological time-scales provides a unique opportunity for understanding patterns of continent-wide genetic diversity following range expansion. Microsatellite markers were used for population genetic analyses including leaf-optimized Neighbor-Joining tree, pairwise FST, mismatch analysis, principle coordinate analysis, Tajima’s D, Fu’s F and Bayesian clusterings of population structure. Evidence indicates two geographically distant introductions of divergent genotypes, which spread across much of the US in <200 years. Based on geophylogeny, gene flow patterns can be inferred to have involved five phases. Centers of genetic diversity have shifted from two introduction sites separated by ~2000 miles toward the middle of the range, consistent with admixture between genotypes from the respective introductions. Genotyping provides evidence for a ‘habitat switch’ from agricultural to non-agricultural systems and may contribute to both Johnsongrass ubiquity and aggressiveness. Despite lower and more structured diversity at the invasion front, Johnsongrass continues to advance northward into cooler and drier habitats. Association genetic approaches may permit identification of alleles contributing to the habitat switch or other traits important to weed/invasive management and/or crop improvement.
URL:	http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0164584&type=printable
Citation statistics:
资源类型:	期刊论文
标识符:	http://119.78.100.158/handle/2HF3EXSE/23905
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

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journal.pone.0164584.PDF（2140KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	View Download

作者单位:

Plant Genome Mapping Lab., Athens, GA, United States of America;Virginia Tech, Blacksburg, VA, United States of America;Virginia Tech, Blacksburg, VA, United States of America;USDA-ARS, PGRCU, Griffin, GA, United States of America;USDA-ARS and University of Nebraska-Lincoln, Lincoln, NE, United States of America;Texas A&M University, College Station, TX, United States of America;The Land Institute, Salina, KS, United States of America;The Land Institute, Salina, KS, United States of America;Texas Tech University, Lubbock, TX, United States of America;University of Arizona, Tucson, AZ, United States of America;University of Arizona, Tucson, AZ, United States of America;New Mexico State University, Las Cruces, NM, United States of America;University of California Davis, Davis CA, United States of America;State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, China Academy of Sciences, Beijing, China;Plant Genome Mapping Lab., Athens, GA, United States of America;Plant Genome Mapping Lab., Athens, GA, United States of America;Plant Genome Mapping Lab., Athens, GA, United States of America;Plant Genome Mapping Lab., Athens, GA, United States of America;Plant Genome Mapping Lab., Athens, GA, United States of America;Plant Genome Mapping Lab., Athens, GA, United States of America;Plant Genome Mapping Lab., Athens, GA, United States of America;Plant Genome Mapping Lab., Athens, GA, United States of America;Plant Genome Mapping Lab., Athens, GA, United States of America;Plant Genome Mapping Lab., Athens, GA, United States of America;Plant Genome Mapping Lab., Athens, GA, United States of America

Recommended Citation:

U. Uzay Sezen,Jacob N. Barney,Daniel Z. Atwater,et al. Multi-Phase US Spread and Habitat Switching of a Post-Columbian Invasive, Sorghum halepense[J]. PLOS ONE,2016-01-01,11(10)

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