质体基因组序列有助于提升樟科具三脉叶物种的系统位置。
Plastome sequences help to improve the systematic position of trinerved species in the family Lauraceae.
作者信息
Tian Xiangyu, Ye Junwei, Song Yu
机构信息
Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, College of Life Sciences, Beijing Normal University, Beijing, China.
Germplasm Bank of Wild Species in Southwest China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, China.
出版信息
PeerJ. 2019 Oct 7;7:e7662. doi: 10.7717/peerj.7662. eCollection 2019.
is a genus (c. 100 spp.) of trees belonging to the "core Laureae" group in the family Lauraceae. It is often confused with , and the systematics of the genus is unclear. Here, total 10 complete plastomes from nine trinerved species and another species (sect. Meissn.) were sequenced. Nine highly variable regions, -GUG/, /-GUC, /, , -UAG/, and , were identified among the 10 species. In addition, a total of 1,836 mutation events including six micro-inversions, 156 indels, and 1,674 substitutions, were also summarized. Comparing our sequences with other available plastomes in the "core Laureae," we put forward that six hypervariable loci, -GUG/, , /, UAG, , and , could potentially be used as plastid barcode candidates for species identification. Further phylogenetic analyses were conducted using 49 complete Lauraceae plastomes. The results supported a close relationship among trinerved species and suggested an improved trinerved group comprising species of trinerved species and .
是樟科“核心樟亚科”组中的一个属（约100种）。它常与混淆，该属的系统分类尚不清楚。在此，对来自9种具三出脉的物种和另一个物种（梅氏组）的总共10个完整质体基因组进行了测序。在这10个物种中鉴定出9个高度可变区域，即-GUG/、/-GUC、/、、-UAG/和。此外，还总结了总共1836个突变事件，包括6个微倒位、156个插入缺失和1674个替换。将我们的序列与“核心樟亚科”中其他可用的质体基因组进行比较，我们提出6个高变位点，即-GUG/、、/、UAG、和，有可能用作物种鉴定的质体条形码候选位点。使用49个完整的樟科质体基因组进行了进一步的系统发育分析。结果支持具三出脉的物种之间存在密切关系，并表明一个改进的具三出脉类群包括具三出脉的物种和的物种。
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