Positive Selection Driving Cytoplasmic Genome Evolution of the Medicinally Important Ginseng Plant Genus Panax.
Positive Selection Driving Cytoplasmic Genome Evolution of the Medicinally Important Ginseng Plant Genus Panax.
复制标题
正选择驱动药用重要人参植物人参的细胞质基因组进化
DOI：
10.3389/fpls.2018.00359
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发表时间：
2018
影响因子：
5.6
通讯作者：
Li LF
中科院分区：
文献类型：
--
作者：
Jiang P;Shi FX;Li MR;Liu B;Wen J;Xiao HX;Li LF
Panax L. (the ginseng genus) is a shade-demanding group within the family Araliaceae and all of its species are of crucial significance in traditional Chinese medicine. Phylogenetic and biogeographic analyses demonstrated that two rounds of whole genome duplications accompanying with geographic and ecological isolations promoted the diversification of Panax species. However, contributions of the cytoplasmic genomes to the adaptive evolution of Panax species remained largely uninvestigated. In this study, we sequenced the chloroplast and mitochondrial genomes of 11 accessions belonging to seven Panax species. Our results show that heterogeneity in nucleotide substitution rate is abundant in both of the two cytoplasmic genomes, with the mitochondrial genome possessing more variants at the total level but the chloroplast showing higher sequence polymorphisms at the genic regions. Genome-wide scanning of positive selection identified five and 12 genes from the chloroplast and mitochondrial genomes, respectively. Functional analyses further revealed that these selected genes play important roles in plant development, cellular metabolism and adaptation. We therefore conclude that positive selection might be one of the potential evolutionary forces that shaped nucleotide variation pattern of these Panax species. In particular, the mitochondrial genes evolved under stronger selective pressure compared to the chloroplast genes.
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影响因子：
10.7
作者：
Gong, Lei;Olson, Mischa;Wendel, Jonathan F.
通讯作者：
Wendel, Jonathan F.
影响因子：
2
作者：
Choi, Hong-Il;Kim, Nam-Hoon;Yang, Tae-Jin
通讯作者：
Yang, Tae-Jin
DOI：
10.1073/pnas.1421372112
发表时间：
2015-08-18
影响因子：
11.1
作者：
Bjorkholm, Patrik;Harish, Ajith;Andersson, Siv G. E.
通讯作者：
Andersson, Siv G. E.
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影响因子：
2.6
作者：
Chen, Jun-Wen;Kuang, Shuang-Bian;Yang, Sheng-Chao
通讯作者：
Yang, Sheng-Chao
高、低光照条件下喜荫植物三七的光合作用、光能分配及光保护
影响因子：
3
作者：
Chen, Jun-Wen;Kuang, Shuang-Bian;Zhang, Guang-Hui
通讯作者：
Zhang, Guang-Hui