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首页> 外文期刊>Mycologia >Imaia, a new truffle genus to accommodate Terfezia gigantea.
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Imaia, a new truffle genus to accommodate Terfezia gigantea.

机译：Imaia ，一种新的松露属，可以容纳 Terfezia gigantea 。

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摘要

Originally described from Japan by Sanshi Imai in 1933, the hypogeous ascomycete Terfezia gigantea was subsequently discovered in the Appalachian Mountains of the USA. Morphological, electron microscopic, and phylogenetic studies of specimens collected in both regions revealed that, despite this huge geographic disjunction, (1) the Japanese and Appalachian specimens are remarkably similar both in morphology and the sampled rDNA sequences, (2) the species unambiguously falls into the Morchellaceae and is separated from the genus Terfezia in the Pezizaceae, (3) its spores are much larger than those of Terfezia spp. and are enclosed in a unique, electron-semitransparent, amorphous epispore that appears to be permeated with minute, meandering strands or canals. In addition to the molecular phylogenetic results, the numerous nuclei in ascospores, the dome shaped, striate ascus septal plugs and the long cylindric Woronin bodies also strengthen the family assignment to the Morchellaceae. Moreover, the species occurs in moist, temperate forests as opposed to the xeric to arid habitats of other Terfezia spp. We propose the new, monotypic genus Imaia to accommodate the species.
机译：伪劣的子囊虫 Terfezia gigantea 最初于1933年在日本被日本人描述，随后在美国的阿巴拉契亚山脉被发现。在这两个地区收集的标本的形态，电子显微镜和系统发育研究表明，尽管地理差异很大，但（1）日本标本和阿巴拉契亚标本在形态和采样rDNA序列上都非常相似，（2）该物种明确地落下进入 Morchellaceae 并与 Terfezia 中的 Terfezia 分离，（3）它的孢子比 Terfezia的大得多 spp。并被包裹在一个独特的，电子半透明的，无定形的孢子囊中，该孢子似乎渗透着细小的曲折链或运河。除了分子系统发育结果外，子囊孢子中无数的核，圆顶形，条纹状的曲柄中隔塞和长圆柱形的沃洛宁体也加强了对 Morchellaceae 的家族分配。此外，该物种出现在湿润的温带森林中，而不是其他特尔非西亚种的干生干旱环境。我们提出了新的单型属 Iiaia 以适应该物种。

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