...Even in the semi-aquatic variety of the fern, the Yakushima fern, stomata have been lost in response to the simplification of the cell layers on the leaf surface. In mosses, stomata are found in the sporophytes of hornworts, and in Marchantiales and other plants, air chambers are formed in the gametophytes, with vertical cracks in the cell walls opening as breathing holes. R. Florin conducted a comparative study of the structure of stomata in gymnosperms and revealed that there are two types of stomata formation process, and showed that the difference corresponds to the process of phylogenetic differentiation of gymnosperms. ... *Some of the terminology that refers to "air chamber" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…ホウビシダの半水生変種であるヤクシマホウビシダでも,葉面の細胞層の単純化に対応して気孔が失われている。コケ植物では,ツノゴケ類の胞子体に気孔がみられ,ゼニゴケ類などでは配偶体に気室air chamberがつくられ,細胞壁の垂直方向の割れ目が呼吸口として開口する。フロリンR.Florinは裸子植物の気孔の構造を比較研究し,その形成過程に2型あることを明らかにしたが,その差が裸子植物の系統分化の過程と一致していることを示した。… ※「air chamber」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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