Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.3732/ajb.1200373 |
DEEP SEQUENCING OF AMPLICONS REVEALS WIDESPREAD INTRASPECIFIC HYBRIDIZATION AND MULTIPLE ORIGINS OF POLYPLOIDY IN BIG SAGEBRUSH (ARTEMISIA TRIDENTATA; ASTERACEAE) | |
Richardson, Bryce A.1; Page, Justin T.2; Bajgain, Prabin2,3; Sanderson, Stewart C.1; Udall, Joshua A.2 | |
通讯作者 | Richardson, Bryce A. |
来源期刊 | AMERICAN JOURNAL OF BOTANY
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ISSN | 0002-9122 |
EISSN | 1537-2197 |
出版年 | 2012 |
卷号 | 99期号:12页码:1962-1975 |
英文摘要 | Premise of the study: Hybridization has played an important role in the evolution and ecological adaptation of diploid and polyploid plants. Artemisia tridentata (Asteraceae) tetraploids are extremely widespread and of great ecological importance. These tetraploids are often taxonomically identified as A. tridentata subsp. wyomingensis or as autotetraploids of diploid subspecies tridentata and vaseyana. Few details are available as to how these tetraploids are formed or how they are related to diploid subspecies. Methods: We used amplicon sequencing to assess phylogenetic relationships among three recognized subspecies: tridentata, vaseyana, and wyomingensis. DNA sequence data from putative genes were pyrosequenced and assembled from 329 samples. Nucleotide diversity and putative haplotypes were estimated from the high-read coverage. Phylogenies were constructed from Bayesian coalescence and neighbor-net network analyses. Key results: Analyses support distinct diploid subspecies of tridentata and vaseyana in spite of known hybridization in ecotones. Nucleotide diversity estimates of populations compared to the total diversity indicate the relationships are predominately driven by a small proportion of the amplicons. Tetraploids, including subspecies wyomingensis, are polyphyletic occurring within and between diploid subspecies groups. Conclusions: Artemisia tridentata is a species comprising phylogenetically distinct diploid progenitors and a tetraploid complex with varying degrees of phylogenetic and morphological affinities to the diploid subspecies. These analyses suggest tetraploids are formed locally or regionally from diploid tridentata and vaseyana populations via autotetraploidy, followed by introgression between tetraploid groups. Understanding the phylogenetic vs. ecological relationships of A. tridentata subspecies will have bearing on how to restore these desert ecosystems. |
英文关键词 | Artemesia tridentata Asteraceae gene discordance haplotype clustering networks phylogeny pyrosequencing reticulate evolution |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000312951600020 |
WOS关键词 | NARROW HYBRID ZONE ; SUBGENUS TRIDENTATAE ; PHYLOGENETIC ANALYSIS ; MAXIMUM-LIKELIHOOD ; EVOLUTIONARY ; SELECTION ; AUTOPOLYPLOIDY ; BRASSICACEAE ; SPECIATION ; ADAPTATION |
WOS类目 | Plant Sciences |
WOS研究方向 | Plant Sciences |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/171131 |
作者单位 | 1.US Forest Serv, Rocky Mt Res Stn, USDA, Provo, UT 84606 USA; 2.Brigham Young Univ, Plant & Wildlife Sci Dept, Provo, UT 84602 USA; 3.Univ Minnesota, Dept Agron & Plant Genet, St Paul, MN 55108 USA |
推荐引用方式 GB/T 7714 | Richardson, Bryce A.,Page, Justin T.,Bajgain, Prabin,et al. DEEP SEQUENCING OF AMPLICONS REVEALS WIDESPREAD INTRASPECIFIC HYBRIDIZATION AND MULTIPLE ORIGINS OF POLYPLOIDY IN BIG SAGEBRUSH (ARTEMISIA TRIDENTATA; ASTERACEAE)[J],2012,99(12):1962-1975. |
APA | Richardson, Bryce A.,Page, Justin T.,Bajgain, Prabin,Sanderson, Stewart C.,&Udall, Joshua A..(2012).DEEP SEQUENCING OF AMPLICONS REVEALS WIDESPREAD INTRASPECIFIC HYBRIDIZATION AND MULTIPLE ORIGINS OF POLYPLOIDY IN BIG SAGEBRUSH (ARTEMISIA TRIDENTATA; ASTERACEAE).AMERICAN JOURNAL OF BOTANY,99(12),1962-1975. |
MLA | Richardson, Bryce A.,et al."DEEP SEQUENCING OF AMPLICONS REVEALS WIDESPREAD INTRASPECIFIC HYBRIDIZATION AND MULTIPLE ORIGINS OF POLYPLOIDY IN BIG SAGEBRUSH (ARTEMISIA TRIDENTATA; ASTERACEAE)".AMERICAN JOURNAL OF BOTANY 99.12(2012):1962-1975. |
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