Zangia, a new genus of Boletaceae supported by molecular and morphological evidence
Zangia, a new genus of Boletaceae supported by molecular and morphological evidence
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Zangia，牛肝菌科的一个新属，得到分子和形态学证据的支持
DOI：
10.1007/s13225-011-0096-y
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发表时间：
2011-07-01
期刊：
影响因子：
20.3
通讯作者：
Yang, Zhu L.
中科院分区：
文献类型：
--
作者：
Li, Yan Chun;Feng, Bang;Yang, Zhu L.
基于分子和形态学数据，提出了一个新的独特的牛肝菌目 Zangia 属，其表型与 Tylopilus 属相似。基于最大简约性、最大似然性和贝叶斯分析，使用两个核基因和三个线粒体基因高度支持 Zangia 的单系性。从形态上看，Zangia与其他牛肝菌谱系的区别在于其具有皱纹的菌盖、粉红色至粉红色的子实菌、粉红色至粉棕色的孢子沉积物、菌柄上粉红色的粗糙鳞片、铬黄至金黄色的菌柄基部、铬黄至金黄色的菌丝体、菌柄基部的铬黄至金黄色的菌丝体、伞菌上皮、无毛孢子和某些物种的菌柄发生蓝色变化。从地理上看，桑吉亚目前仅见于中国南部、东南部和西南部，以壳斗科与松科混合的森林为主。六个物种，包括 4 个新物种和 2 个新组合，都有完整的记录，并附有分类学描述和插图。提供了赞吉亚物种的钥匙。有人认为，随着喜马拉雅山脉东部和横断山脉的隆起，一些物种可能在最近才开始相互分化，菌根宿主的特异性或偏好以及地理分离可能导致它们的持续分化。
A new distinct genus of Boletales,Zangia, with phenotypic similarities to the genusTylopilus, is proposed based on molecular and morphological data. The monophyly ofZangiawas highly supported using two nuclear and three mitochondrial genes based on Maximum Parsimony, Maximum Likelihood and Bayesian analyses. Morphologically,Zangiais distinguished from other boletoid lineages by its combination of rugose pileus, pinkish to pink hymenophore, pink to pinkish brown spore deposit, pink scabrous squamules on the stipe, chrome yellow to golden yellow stipe base, chrome yellow to golden yellow mycelia on the base of the stipe, ixohyphoepithelium pileipellis, glabrous spores and bluish colour changes in the stipe in some species. Geographically,Zangiais currently only known from southern, southeastern and southwestern China under forests dominated by Fagaceae mixed with Pinaceae. Six species, including 4 new ones and 2 new combinations, are fully documented with taxonomic descriptions and illustrations. A key to the species inZangiais provided. It is suggested that some of the species might have started diverging from each other relatively recently with the uplifts of the eastern Himalayas and Hengduan Mountains, and both the mycorrhizal host specificity or preference and geographic separation could contribute to their ongoing divergence.