Genome-scale phylogenetic analyses confirm Olpidium as the closest living zoosporic fungus to the non-flagellated, terrestrial fungi.
Genome-scale phylogenetic analyses confirm Olpidium as the closest living zoosporic fungus to the non-flagellated, terrestrial fungi.
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基因组规模的系统发育分析证实，Olpidium是最接近于非鞭毛陆地真菌的活着的游动孢子菌。
DOI：
10.1038/s41598-021-82607-4
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发表时间：
2021-02-05
影响因子：
4.6
通讯作者：
Spatafora JW
中科院分区：
文献类型：
--
作者：
Chang Y;Rochon D;Sekimoto S;Wang Y;Chovatia M;Sandor L;Salamov A;Grigoriev IV;Stajich JE;Spatafora JW
游动孢子专性内生真菌Olpidium对于重建真菌中的鞭毛丢失具有关键的地位，这是与早期真菌在陆地上定居有关的关键形态转变之一。我们从Bornovanus的非无菌游动孢子中产生了基因组和转录组数据，并使用元基因组方法提取了具有系统发育信息的真菌标记。我们的系统发育重建有力地支持Olpidium作为非鞭毛陆生真菌的游动孢子近亲。超比对分析将Olpidium分解为非鞭毛陆地真菌的姊妹种，而超树方法恢复了Olpidium的不同位置，但没有强有力的支持。进一步的研究发现，样本标记之间几乎没有相互冲突的信号，但在早期真菌进化中发现了与Olpidium、Zoopagmycota和Mucormycota之间的分支顺序相关的潜在的多样性。确定这些谱系进化关系的分支具有分支长度短和系统发育含量低的特点，并从单个标记获得了对替代系统发育假说的模棱两可的支持。这些节以重要的形态创新为标志，包括向菌丝生长的过渡和鞭毛的丧失，这使得早期真菌能够探索新的生态位，并导致几个真菌门的祖先在寒武纪前迅速和暂时地多样化。
The zoosporic obligate endoparasites, Olpidium, hold a pivotal position to the reconstruction of the flagellum loss in fungi, one of the key morphological transitions associated with the colonization of land by the early fungi. We generated genome and transcriptome data from non-axenic zoospores of Olpidium bornovanus and used a metagenome approach to extract phylogenetically informative fungal markers. Our phylogenetic reconstruction strongly supported Olpidium as the closest zoosporic relative of the non-flagellated terrestrial fungi. Super-alignment analyses resolved Olpidium as sister to the non-flagellated terrestrial fungi, whereas a super-tree approach recovered different placements of Olpidium, but without strong support. Further investigations detected little conflicting signal among the sampled markers but revealed a potential polytomy in early fungal evolution associated with the branching order among Olpidium, Zoopagomycota and Mucoromycota. The branches defining the evolutionary relationships of these lineages were characterized by short branch lengths and low phylogenetic content and received equivocal support for alternative phylogenetic hypotheses from individual markers. These nodes were marked by important morphological innovations, including the transition to hyphal growth and the loss of flagellum, which enabled early fungi to explore new niches and resulted in rapid and temporally concurrent Precambrian diversifications of the ancestors of several phyla of fungi.
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影响因子：
3.3
作者：
Chang Y;Wang S;Sekimoto S;Aerts AL;Choi C;Clum A;LaButti KM;Lindquist EA;Yee Ngan C;Ohm RA;Salamov AA;Grigoriev IV;Spatafora JW;Berbee ML
通讯作者：
Berbee ML
影响因子：
1.7
作者：
Jurka, J;Kapitonov, VV;Walichiewicz, J
通讯作者：
Walichiewicz, J
DOI：
10.1093/dnares/dsx051
发表时间：
2018-04-01
期刊：
DNA research : an international journal for rapid publication of reports on genes and genomes
影响因子：
--
作者：
Beaudet D;Chen ECH;Mathieu S;Yildirir G;Ndikumana S;Dalpé Y;Séguin S;Farinelli L;Stajich JE;Corradi N
通讯作者：
Corradi N
影响因子：
--
作者：
Hoff, Katharina J;Stanke, Mario
通讯作者：
Stanke, Mario
影响因子：
6
作者：
Berbee, Mary L.;Taylor, John W.
通讯作者：
Taylor, John W.