Ascomycota has a faster evolutionary rate and higher species diversity than Basidiomycota
Ascomycota has a faster evolutionary rate and higher species diversity than Basidiomycota
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子囊菌门比担子菌门具有更快的进化速度和更高的物种多样性
DOI：
10.1007/s11427-010-4063-8
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发表时间：
2010-10
影响因子：
9.1
通讯作者：
Wang HaiYing
中科院分区：
文献类型：
--
作者：
Guo ShouYu;Huang ManRong;Wei JiangChun;Thorsten, Lumbsch H.;Wang HaiYing
核苷酸或氨基酸取代率的差异在主要的生物群体中被反复发现并得到了很好的记录。越来越多的证据表明，种群内中性分子变化的速率与物种多样性的进化之间存在联系。超过98%的陆生真菌属于子囊菌门或担子菌门。前者在物种数量上比后者丰富得多。我们获得了地衣化真菌Roccus placa chrysoleuca的21个蛋白质编码基因的DNA序列，并将它们与GenBank中的序列一起用于随后的分析。利用三个数据集来检验子囊菌门和担子菌门与子囊菌门内的比率差异：（i）13个分类群，包括105个蛋白质编码基因，（ii）9个分类群，包括21个蛋白质编码基因，和（iii）299种真菌的核LSU rDNA。基于对105个蛋白质编码基因和核LSU rDNA数据集的分析，我们发现子囊菌门的进化速率高于担子菌门。子囊菌门和担子菌门的替代率差异显著。在子囊菌门中，种类丰富的囊壳菌门的进化速度最快，而Leotiomycetes的进化速度最慢。我们的研究结果表明，子囊菌门较高的替代率的主要贡献不是来自互惠共生，生态条件，不育，代谢率或较短的世代时间，但可能是由创始人效应。这是物种数量和进化速率之间相关性的另一个例子，这与创始人效应是不同进化枝中加速替代速率的假设一致。
Differences in rates of nucleotide or amino acid substitutions among major groups of organisms are repeatedly found and well documented. A growing body of evidence suggests a link between the rate of neutral molecular change within populations and the evolution of species diversity. More than 98% of terrestrial fungi belong to the phyla Ascomycota or Basidiomycota. The former is considerably richer in number of species than the latter. We obtained DNA sequences of 21 protein-coding genes from the lichenized fungusRhizoplaca chrysoleucaand used them together with sequences from GenBank for subsequent analyses. Three datasets were used to test rate discrepancies between Ascomycota and Basidiomycota and that within Ascomycota: (i) 13 taxa including 105 protein-coding genes, (ii) nine taxa including 21 protein-coding genes, and (iii) nuclear LSU rDNA of 299 fungal species. Based on analyses of the 105 protein-coding genes and nuclear LSU rDNA datasets, we found that the evolutionary rate was higher in Ascomycota than in Basidiomycota. The differences in substitution rates between Ascomycota and Basidiomycota were significant. Within Ascomycota, the species-rich Sordariomycetes has the fastest evolutionary rate, while Leotiomycetes has the slowest. Our results indicate that the main contribution to the higher substitution rates in Ascomycota does not come from mutualism, ecological conditions, sterility, metabolic rate or shorter generation time, but is possibly caused by the founder effect. This is another example of the correlation between species number and evolutionary rates, which is consistent with the hypothesis that the founder effect is responsible for accelerated substitution rates in diverse clades.
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影响因子：
2.8
作者：
J. Spatafora;G. Sung;Desiree Johnson;C. Hesse;B. O’Rourke;M. Serdani;R. Spotts;F. Lutzoni;V. H
通讯作者：
J. Spatafora;G. Sung;Desiree Johnson;C. Hesse;B. O’Rourke;M. Serdani;R. Spotts;F. Lutzoni;V. H
影响因子：
56.9
作者：
A. J. Webster;R. Payne;M. Pagel
通讯作者：
A. J. Webster;R. Payne;M. Pagel
影响因子：
2.8
作者：
J. Miadlikowska;F. Kauff;V. Hofstetter;E. Fraker;M. Grube;J. Hafellner;Valérie Reeb;B. Hodkinson
通讯作者：
J. Miadlikowska;F. Kauff;V. Hofstetter;E. Fraker;M. Grube;J. Hafellner;Valérie Reeb;B. Hodkinson
影响因子：
16.8
作者：
D. Rand
通讯作者：
D. Rand
影响因子：
6.1
作者：
D. Kohne
通讯作者：
D. Kohne