Size is not everything: rates of genome size evolution, not C-value, correlate with speciation in angiosperms
Size is not everything: rates of genome size evolution, not C-value, correlate with speciation in angiosperms
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大小并不代表一切：基因组大小进化速率，而不是 C 值，与被子植物的物种形成相关
DOI：
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
P. Donoghue
中科院分区：
文献类型：
--
作者：
Mark N. Puttick;James W. Clark;P. Donoghue
被子植物是进化成功的关键例子之一，它们的多样性使其他陆地植物相形见绌;这种成功部分与基因组大小和全基因组复制事件等现象有关。然而，虽然被子植物表现出显着的基因组大小的广度，证据连接整体基因组大小的多样性是模棱两可的，在最好的。在这里，我们表明，物种形成和基因组大小进化的速率在陆地植物中是紧密相关的，被子植物的物种形成和基因组大小进化的速率最高，而在它们相对物种贫乏的姐妹群裸子植物中，物种形成和基因组大小进化的速率非常慢。没有证据表明整体基因组大小和物种形成率之间存在联系。在被子植物中，单子叶植物和真双子叶植物都表现出最高的物种形成和基因组大小进化速率，这些数据为被子植物的巨大多样性提供了一个潜在的解释。很难将高多样性率与不同类型的多倍性联系起来，但高进化率可能与基因组复制后较小的基因组大小相关。被子植物的多样性，部分原因可能是由于受益于全基因组复制，转座因子和一般的基因组可塑性的能力，以增加进化。
Angiosperms represent one of the key examples of evolutionary success, and their diversity dwarfs other land plants; this success has been linked, in part, to genome size and phenomena such as whole genome duplication events. However, while angiosperms exhibit a remarkable breadth of genome size, evidence linking overall genome size to diversity is equivocal, at best. Here, we show that the rates of speciation and genome size evolution are tightly correlated across land plants, and angiosperms show the highest rates for both, whereas very slow rates are seen in their comparatively species-poor sister group, the gymnosperms. No evidence is found linking overall genome size and rates of speciation. Within angiosperms, both the monocots and eudicots show the highest rates of speciation and genome size evolution, and these data suggest a potential explanation for the megadiversity of angiosperms. It is difficult to associate high rates of diversification with different types of polyploidy, but it is likely that high rates of evolution correlate with a smaller genome size after genome duplications. The diversity of angiosperms may, in part, be due to an ability to increase evolvability by benefiting from whole genome duplications, transposable elements and general genome plasticity.
DOI：
10.1111/nph.13491
发表时间：
2015-07
期刊：
The New phytologist
影响因子：
--
作者：
David C. Tank;J. Eastman;Matthew W. Pennell;P. Soltis;D. Soltis;Cody E. Hinchliff;Joseph W. Brown;Emily B. Sessa;L. Harmon
通讯作者：
David C. Tank;J. Eastman;Matthew W. Pennell;P. Soltis;D. Soltis;Cody E. Hinchliff;Joseph W. Brown;Emily B. Sessa;L. Harmon
影响因子：
6.5
作者：
Landis, Michael J.;Schraiber, Joshua G.;Liang, Mason
通讯作者：
Liang, Mason
影响因子：
10.7
作者：
Barker, Michael S.;Kane, Nolan C.;Rieseberg, Loren H.
通讯作者：
Rieseberg, Loren H.