Hybridisation and chloroplast capture between distinct Themeda triandra lineages in Australia.
Hybridisation and chloroplast capture between distinct Themeda triandra lineages in Australia.
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DOI：
10.1111/mec.16691
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发表时间：
2022-11
影响因子：
4.9
通讯作者：
Jobson, Richard W.
中科院分区：
文献类型：
--
作者：
Dunning, Luke T.;Olofsson, Jill K.;Papadopulos, Alexander S. T.;Hibdige, Samuel G. S.;Hidalgo, Oriane;Leitch, Ilia J.;Baleeiro, Paulo C.;Ntshangase, Sinethemba;Barker, Nigel;Jobson, Richard W.
生态类型是一个物种内适应特定环境条件的不同种群。了解这些生态类型是如何建立的，以及它们在团聚时如何相互作用，对于阐明生态适应是如何维持的至关重要。本研究的重点是Themeda triandra，亚洲，非洲和澳大利亚的优势草地物种。它是澳大利亚分布最广的植物，在那里它有不同的生态类型，通常限于潮湿和凉爽的沿海地区或干燥和炎热的内陆地区。我们为T.利用全基因组测序技术对80多份Themeda种质进行了系统的进化历史重建。三蕊花属和相关分类群。通过细胞器的形态学观察，证实了澳大利亚曾被T. triandra两次，在到达澳大利亚之前，生态型之间的划分。核基因组提供了优势倍性水平和生态型之间基因流差异的证据。在北方昆士兰州，似乎有一个混合核基因组和共享叶绿体单倍型的生态型之间的杂交区。相反，在西澳大利亚的开裂粘土层中，具有沿海叶绿体和内部进化枝核基因组的个体存在细胞核不一致。这种叶绿体捕获可能是适应性渐渗的结果，在与水分利用效率相关的rpoC2基因中检测到选择。T. triandra是澳大利亚分布最广的植物，这似乎是独特的生态型遗传变异和基因组复制的结果，每种变异的重要性取决于所考虑的地理范围。
Ecotypes are distinct populations within a species that are adapted to specific environmental conditions. Understanding how these ecotypes become established, and how they interact when reunited, is fundamental to elucidating how ecological adaptations are maintained. This study focuses on Themeda triandra, a dominant grassland species across Asia, Africa and Australia. It is the most widespread plant in Australia, where it has distinct ecotypes that are usually restricted to either wetter and cooler coastal regions or the drier and hotter interior. We generate a reference genome for T. triandra and use whole genome sequencing for over 80 Themeda accessions to reconstruct the evolutionary history of T. triandra and related taxa. Organelle phylogenies confirm that Australia was colonized by T. triandra twice, with the division between ecotypes predating their arrival in Australia. The nuclear genome provides evidence of differences in the dominant ploidal level and gene‐flow among the ecotypes. In northern Queensland there appears to be a hybrid zone between ecotypes with admixed nuclear genomes and shared chloroplast haplotypes. Conversely, in the cracking claypans of Western Australia, there is cytonuclear discordance with individuals possessing the coastal chloroplast and interior clade nuclear genome. This chloroplast capture is potentially a result of adaptive introgression, with selection detected in the rpoC2 gene which is associated with water use efficiency. The reason that T. triandra is the most widespread plant in Australia appears to be a result of distinct ecotypic genetic variation and genome duplication, with the importance of each depending on the geographic scale considered.
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在一个孤立的岛屿上维持密切相关的四倍体寄生虫（Orobanchaceae）的物种差异。
影响因子：
10.5
作者：
Becher H;Brown MR;Powell G;Metherell C;Riddiford NJ;Twyford AD
通讯作者：
Twyford AD
影响因子：
4.4
作者：
Hu S;Sablok G;Wang B;Qu D;Barbaro E;Viola R;Li M;Varotto C
通讯作者：
Varotto C
DOI：
10.1111/evo.12329
发表时间：
2014-04
期刊：
Evolution; international journal of organic evolution
影响因子：
--
作者：
Butlin RK;Saura M;Charrier G;Jackson B;André C;Caballero A;Coyne JA;Galindo J;Grahame JW;Hollander J;Kemppainen P;Martínez-Fernández M;Panova M;Quesada H;Johannesson K;Rolán-Alvarez E
通讯作者：
Rolán-Alvarez E
影响因子：
9.4
作者：
GARBUTT, K;BAZZAZ, FA
通讯作者：
BAZZAZ, FA
DOI：
10.1093/bioinformatics/btp348
发表时间：
2009-08-01
期刊：
Bioinformatics (Oxford, England)
影响因子：
--
作者：
Capella-Gutiérrez S;Silla-Martínez JM;Gabaldón T
通讯作者：
Gabaldón T