Ultrastructure of the spore in four Japanese species ofPtychomitriumFürnr. (Musci)

Autor:	Tomio Yamaguchi, Hironori Deguchi, Belén Estébanez
Rok vydání:	2006
Předmět:	Polarity (international relations) food.ingredient biology Plant Science Grimmia biology.organism_classification Moss Spore Taxon food Genus Botany Ultrastructure Ptychomitrium Ecology Evolution Behavior and Systematics
Zdroj:	Grana. 45:61-70
ISSN:	1651-2049 0017-3134
Popis:	The ultrastructure of the mature spore in four Japanese species of the acrocarpous moss genus Ptychomitrium is presented. In all species the spores have a similar pattern: there is no recognisable aperture nor sporoderm polarity, exine and perine are poorly developed, cytoplasm only occasionally shows polarity, and plastids have a well developed inner membrane system. The presence of frequent intine protrusions is a remarkable feature of this genus. A multilaminar structure of the exine, already observed in Grimmia, occurs also in these species although here it is less pronounced. The significance of these features is discussed within these species, as well as in comparison to other taxa, especially the genus Grimmia.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3cbf662af58f5f13d6281bd1fb854697 https://doi.org/10.1080/00173130600555722 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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