Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1071/BT17046 |
Measuring genome-wide genetic variation to reassess subspecies classifications in Dodonaea viscosa (Sapindaceae) | |
Christmas, Matthew J.1; Biffin, Ed2; Lowe, Andrew J.3,4 | |
通讯作者 | Lowe, Andrew J. |
来源期刊 | AUSTRALIAN JOURNAL OF BOTANY |
ISSN | 0067-1924 |
EISSN | 1444-9862 |
出版年 | 2018 |
卷号 | 66期号:4页码:287-297 |
英文摘要 | Subspecies are traditionally defined on the basis of geographic discontinuities in phenotypic traits, and their circumscription is useful to distinguish morphologically differentiated populations. However, the robustness of morphology-based subspecies classifications in the genomics era is coming under increasing scrutiny, and phylogenies inferred from molecular data may not match with morphological approaches. The division of the shrub Dodonaea viscosa into seven subspecies within Australia has been based mainly on variation in leaf shape, which is a notably variable phenotypic character in this species. So as to assess the alignment between genetic variation and subspecies assignment, we genotyped 67 D. viscosa plants, including representatives from each of the seven subspecies, for 941 single nucleotide polymorphisms. Weused network-and Bayesian-based methods to assess genetic relatedness between sampled individuals. Structure analysis identified two genetic clusters, with a further substructure being identified within one of the clusters. Genetic clusters partially aligned with subspecies classifications, particularly for the three most morphologically distinct subspecies (ssp. mucronata, ssp. viscosa and ssp. burmanniana). Subspecies inhabiting the arid zone (ssp. mucronata and ssp. angustissima) exhibited the most distinct genetic clustering. For subspecies inhabiting more temperate regions of its range (ssp. angustifolia, ssp. cuneata and ssp. spatulata), genetic groups did not correspond well with subspecies classifications, but rather were better explained by the geographic origin of individuals. We suggest that the current subspecific classification of the hopbush does not accurately reflect the evolutionary history of this species, and recommend that phenotypic variation be reassessed in light of the genetic structure we describe here. The roles of environmental change, selection and geographic isolation are discussed in an attempt to explain the contemporary distribution of genetic variation in D. viscosa in Australia. |
类型 | Article |
语种 | 英语 |
国家 | Sweden ; Australia |
收录类别 | SCI-E |
WOS记录号 | WOS:000441025000001 |
WOS关键词 | POPULATION-STRUCTURE ; PHYLOGENETIC NETWORKS ; TARGETED CAPTURE ; HISTORY ; EVOLUTIONARY ; AUSTRALIA ; PATTERNS ; WIDESPREAD ; EUCALYPTUS ; DISCOVERY |
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/2XILL650/208014 |
作者单位 | 1.Uppsala Univ, Dept Med Biochem & Microbiol, Sci Life Lab, S-75123 Uppsala, Sweden; 2.State Herbarium South Australia, Hackney Rd, Adelaide, SA 5000, Australia; 3.Univ Adelaide, Environm Inst, North Terrace, SA 5005, Australia; 4.Univ Adelaide, Sch Biol Sci, North Terrace, SA 5005, Australia |
推荐引用方式 GB/T 7714 | Christmas, Matthew J.,Biffin, Ed,Lowe, Andrew J.. Measuring genome-wide genetic variation to reassess subspecies classifications in Dodonaea viscosa (Sapindaceae)[J],2018,66(4):287-297. |
APA | Christmas, Matthew J.,Biffin, Ed,&Lowe, Andrew J..(2018).Measuring genome-wide genetic variation to reassess subspecies classifications in Dodonaea viscosa (Sapindaceae).AUSTRALIAN JOURNAL OF BOTANY,66(4),287-297. |
MLA | Christmas, Matthew J.,et al."Measuring genome-wide genetic variation to reassess subspecies classifications in Dodonaea viscosa (Sapindaceae)".AUSTRALIAN JOURNAL OF BOTANY 66.4(2018):287-297. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。