Askus

Japanese: ascus
Askus

…(1) A botanical term. A pouch-like sporangium that is produced after sexual reproduction in Ascomycetes. It is often cylindrical or club-shaped and contains eight ascospores inside. …

From [Sporangium]

…In algae and fungi, they are unicellular and the same size as or larger than vegetative cells. In ascocysts such as Aspergillus oryzae, they are called ascus, and in basidiomycetes such as Tricholoma matsutake, they are called basidium. In terrestrial mosses and vascular plants, they are multicellular sac-like structures. …

*Some of the terminology that mentions "ascus" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…(1)植物学用語。子囊菌類において有性生殖の後に生じる袋状の胞子囊ascus。多くの場合,円筒形または棍棒状で内部に8個の子囊胞子ascosporeを生じる。…

【胞子囊】より

…藻類や菌類では単細胞性で,栄養細胞と同形かそれより大きい。コウジカビなどの子囊菌類では子囊ascus,マツタケなどの担子菌類では担子器basidiumと呼ばれる。陸上生活をするコケ植物と維管束植物では多細胞性の囊状構造である。…

※「ascus」について言及している用語解説の一部を掲載しています。

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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