This is a large group of fungi that includes everything from single-celled organisms such as yeast, to molds with filamentous cells such as Aspergillus oryzae, Penicillium oryzae, and Neurospora crassa, as well as relatively large, mushroom-like organisms such as Trichoderma maculatum, Trichoderma maculatum, and Morel. There are currently 1,950 genera and 15,000 species known. Like other fungi, they undergo repeated alternations of asexual and sexual reproduction, but the characteristic of ascomycete fungi is that as a result of sexual reproduction they form a pouch called an ascus, in which they usually produce eight spores (ascospores). Source: Heibonsha World Encyclopedia, 2nd Edition Information |
酵母のように単細胞を主体とするものから,コウジカビ,アオカビ,アカパンカビなどのように糸状細胞のいわゆるカビといわれるものや,さらにマメザヤタケ,チャワンタケ,アミガサタケなどのように比較的大型でキノコ状のものまでをふくむ菌類をまとめた大群である。現在のところ1950属,1万5000種が知られている。他の菌類と同様に,無性生殖と有性生殖との世代交代をくり返すが,子囊菌類の特徴は,有性生殖の結果として子囊という袋を形成し,その中に普通8個の胞子(子囊胞子)をつくることである。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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