No jacket required - new fungal lineage defies dress code
No jacket required - new fungal lineage defies dress code
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DOI：
10.1002/bies.201100110
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发表时间：
2012-02-01
期刊：
影响因子：
4
通讯作者：
Berbee, Mary L.
中科院分区：
文献类型：
--
作者：
James, Timothy Y.;Berbee, Mary L.
对环境DNA的分析提供了关于rozellida或cryptomycota的诱人证据，这是一种大多未描述且分歧很大的水生真菌分支。在这里，我们把隐菌门的角度通过考虑Rozella，唯一的分支成员在文化中生长。这是及时的，因为在自然杂志上发表了来自环境污染的未培养隐真菌的第一张图像，其中分子探针显示了非运动的囊状结构和运动的孢子，所有这些都缺乏典型的真菌几丁质细胞壁。目前对Rozella的研究可以补充这些来自环境样本的零碎观察。Rozella具有真菌特异性几丁质合成酶，其休眠孢子囊具有似乎含有几丁质的壁。隐菌门，包括Rozella，在吸收食物时缺乏细胞壁，但像其他一些真菌一样，它们可能通过收敛失去了晚餐外套。而不是进化中间体，隐菌门可能是奇怪的，分歧的真菌，从一个祖先进化而来，具有几乎完整的一套经典真菌特有的特征。
Analyses of environmental DNAs have provided tantalizing evidence for rozellida or cryptomycota, a clade of mostly undescribed and deeply diverging aquatic fungi. Here, we put cryptomycota into perspective through consideration of Rozella, the only clade member growing in culture. This is timely on account of the publication in Nature of the first images of uncultured cryptomycota from environmental filtrates, where molecular probes revealed non-motile cyst-like structures and motile spores, all lacking typical fungal chitinous cell walls. Current studies of Rozella can complement these fragmentary observations from environmental samples. Rozella has a fungal-specific chitin synthase and its resting sporangia have walls that appear to contain chitin. Cryptomycota, including Rozella, lack a cell wall when absorbing food but like some other fungi, they may have lost their dinner jacket through convergence. Rather than evolutionary intermediates, the cryptomycota may be strange, divergent fungi that evolved from an ancestor with a nearly complete suite of classical fungal-specific characters.