Phylogenomic Analyses Indicate that Early Fungi Evolved Digesting Cell Walls of Algal Ancestors of Land Plants.
Phylogenomic Analyses Indicate that Early Fungi Evolved Digesting Cell Walls of Algal Ancestors of Land Plants.
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DOI：
10.1093/gbe/evv090
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发表时间：
2015-05-14
影响因子：
3.3
通讯作者：
Berbee ML
中科院分区：
文献类型：
--
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
作为分解者，真菌是全球碳循环中回收植物材料的关键参与者。我们假设，早期分歧真菌的基因组可能继承了果胶酶的祖先物种，已经能够提取营养物质的含果胶的陆地植物和他们的藻类盟友（链霉菌）。我们的目的是推断，基于果胶酶基因的扩增和生物体发育，植物-真菌协会的地质时间。我们分析了40个真菌基因组，其中三个，包括Gonapodya prolifera，进行了测序。在来自136个管家位点的生物体进化中，Rozella首先从所有其他真菌中分化出来。Gonapodya prolifera是壶菌门中主要的水生鞭毛真菌。壶菌门的姐妹是主要的陆生真菌，包括壶菌门I和壶菌门II，以及沿着的子囊菌和担子菌，构成了Dikarya。Gonapodya基因组有27个基因，代表真菌中已知的七种果胶特异性酶中的五种。这些酶中的大多数与来自Dikarya的果胶酶具有共同的祖先。表明功能和序列相似性，Gonapodya，像许多Dikarya一样，可以使用果胶作为纯培养生长的碳源。Dikarya和Gonapodya共有的果胶酶提供了证据，表明即使是古老的水生真菌也适应了从绿色谱系的植物中提取营养物质。这意味着7.5亿年，含果胶链霉菌的最大起源年龄代表壶菌门从包括Dikarya在内的谱系中分化的最大年龄。
As decomposers, fungi are key players in recycling plant material in global carbon cycles. We hypothesized that genomes of early diverging fungi may have inherited pectinases from an ancestral species that had been able to extract nutrients from pectin-containing land plants and their algal allies (Streptophytes). We aimed to infer, based on pectinase gene expansions and on the organismal phylogeny, the geological timing of the plant–fungus association. We analyzed 40 fungal genomes, three of which, including Gonapodya prolifera, were sequenced for this study. In the organismal phylogeny from 136 housekeeping loci, Rozella diverged first from all other fungi. Gonapodya prolifera was included among the flagellated, predominantly aquatic fungal species in Chytridiomycota. Sister to Chytridiomycota were the predominantly terrestrial fungi including zygomycota I and zygomycota II, along with the ascomycetes and basidiomycetes that comprise Dikarya. The Gonapodya genome has 27 genes representing five of the seven classes of pectin-specific enzymes known from fungi. Most of these share a common ancestry with pectinases from Dikarya. Indicating functional and sequence similarity, Gonapodya, like many Dikarya, can use pectin as a carbon source for growth in pure culture. Shared pectinases of Dikarya and Gonapodya provide evidence that even ancient aquatic fungi had adapted to extract nutrients from the plants in the green lineage. This implies that 750 million years, the estimated maximum age of origin of the pectin-containing streptophytes represents a maximum age for the divergence of Chytridiomycota from the lineage including Dikarya.
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影响因子：
18.3
作者：
Gingras, Murray;Hagadorn, James W.;Konhauser, Kurt O.
通讯作者：
Konhauser, Kurt O.
影响因子：
4.1
作者：
Kueck, Patrick;Meusemann, Karen
通讯作者：
Meusemann, Karen
影响因子：
6.5
作者：
Lemmon, Alan R.;Brown, Jeremy M.;Lemmon, Emily Moriarty
通讯作者：
Lemmon, Emily Moriarty
影响因子：
3.4
作者：
Hedges, SB;Blair, JE;Shoe, JL
通讯作者：
Shoe, JL
影响因子：
3.7
作者：
Fiz-Palacios O;Romeralo M;Ahmadzadeh A;Weststrand S;Ahlberg PE;Baldauf S
通讯作者：
Baldauf S