Molecular evolution and positive Darwinian selection of the chloroplast maturase matK.

Journal of Plant Research
Da Cheng HaoPei Gen Xiao

Abstract

It is not clear whether matK evolves under Darwinian selection. In this study, 70 plant groups, representing 2,279 species at various evolutionary levels, were used to illustrate the molecular adaptation and evolutionary dynamics of gene divergence in matKs. Selective influences were investigated using standard dN/dS ratio methods. Analyses revealed the presence of positive selection in matKs of 32 plant groups. More positively selected sites were detected in the N-terminal region than in the RT domain and domain X of matK. Moreover, removing amino acid sites that are under positive selection has a significant effect on the bootstrap values of phylogenetic reconstruction. Our results suggest that the rapidly evolving matK evolves under positive selection in some lineages of land plants. Several regions of matK have experienced molecular adaptation, which fine-tunes maturase performance.

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Citations

Jun 23, 2011·Frontiers of Medicine·Shilin ChenQiushi Li
Sep 17, 2014·Molecular Ecology·Dan G BockLoren H Rieseberg
Jun 25, 2016·Genome Biology·Henry DaniellWan-Jung Chang
Sep 25, 2020·Plants·Wanapinun NawaeWirulda Pootakham
Jun 16, 2019·International Journal of Molecular Sciences·Ming YanZhaohe Yuan
Nov 21, 2019·Functional & Integrative Genomics·Aidi ZhangXiujun Zhang
Jun 16, 2019·Current Genetics·Giovanni ZeccaTengiz Beridze
Jul 15, 2020·Scientific Reports·Piotr AndrosiukIrena Giełwanowska

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