New and rare taxa in Agaricus section Bivelares (Duploannulati)
New and rare taxa in Agaricus section Bivelares (Duploannulati)
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DOI：
10.3852/08-019
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发表时间：
2008-11
期刊：
影响因子：
2.8
通讯作者：
R. Kerrigan;P. Callac;L. Parra
中科院分区：
文献类型：
--
作者：
R. Kerrigan;P. Callac;L. Parra
正在进行的野外和实验室研究使我们在Agaricus组Bivelares中发现了新的分类单元，这是一个最近的组合，现在是Duploannulati组最早的同名和正确的名称。Agaricus cupreshorilus和A.tlaxcalensis，以及黑蘑菇A.agrinus、A.Devoniensis subsp.Brighamii和姬松茸Agaricus subsubsubsis的新种。絮状蘑菇是一种典型的菌种。用ITS1+2 DNA序列的系统发育重建方法来确定新分类群的合适位置。总而言之，这些新的分类群和系统发育组合代表了我们对Bivelares组的认识的实质性的增强和澄清；根据所描述的，北半球的已测序的种级分类群从6个增加到10个，一个明显的亚组谱系被揭示，并提高了在A.Devoniens内的种下分辨率。一个异常的ITS1+2序列被记录在一个亚种的集合中。还提供了来自法国的另一个新成员Bivelares的初步数据。这些分类群中有几个是罕见的，突显了记录这一组生物多样性的机遇和挑战。文中还提供了对最近PUBLICATIONS中处理的相关分类群的补充意见。
Ongoing field and laboratory studies have led to our recognition of new taxa in Agaricus section Bivelares, a recent combination and now the earliest synonym and correct name of section Duploannulati. Agaricus cupressophilus and A. tlaxcalensis, in the new Agaricus subsection Cupressorum, and A. agrinferus, A. devoniensis subsp. bridghamii, and A. subsubensis in Agaricus subsection Hortenses, are described. Agaricus subfloccosus is lectotypified. Phylogeny reconstruction methods with ITS1+2 DNA sequences were used to determine appropriate placements of the new taxa. Collectively these new taxa and phylogenetic associations represent a substantial augmentation and clarification of our knowledge of section Bivelares; described, sequenced species-level taxa in the northern hemisphere are increased from six to 10, a distinct subsectional lineage is revealed and infraspecific resolution within A. devoniensis is improved. An anomalous ITS1+2 sequence is documented in one collection of A. subsubensis. Preliminary data on another novel member of Bivelares from France also are provided. Several of these taxa are rare, highlighting opportunities and challenges for documenting biodiversity in this group. Additional comments on related taxa treated in recentPUBLICations are also provided.