Charophyceae


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Charophyceae

[‚kar·ə′fīs·ē‚ē]
(botany)
A class of green algae in the division Chlorophyta.
References in periodicals archive ?
aquabot.2018.01.003 (AEP, V, Charophyceae, Chara, Ecol).
(AEP, Gu, V, Ecol, Charophyceae, Bacillariophyceae, Chlorophyceae, Cyanophyceae)
aquabot.2017.01.003 (AEP, A, V, Charophyceae, Chara, Ecol).
Las Charophyceae son consideradas como el grupo de algas mas estrechamente relacionadas a las plantas terrestres (Karol, McCourt, Cimino, & Delwiche, 2001; Turmel, Otis, & Lemieux, 2006; McCourt, Delwiche, & Karol, 2004), no obstante, en la actualidad su posicion filogenetica es controversial (Turmel et al., 2006; Lemieux, Otis, & Turmel, 2007; Wodniok et al., 2011; Timme, Bachvaroff, & Delwiche, 2012).
Las Charophyceae se caracterizan por la complejidad de su morfologia vegetativa y reproductiva, lo cual hace que su taxonomia sea compleja y dificil de discernir (van den Hoek, Mann, & Jahns, 1995; Graham, Wilcox, & Graham, 2009; Bueno, Bicudo, Biolo, & Meurer, 2009; Urbaniak, 2011; Sato, Sakayama, Sato, Ito, & Sekimoto, 2014; Schneider, Rodrigues, Moe, & Ballot, 2015).
La reproduccion sexual en las Charophyceae es oogamica, es decir, se debe a estructuras sexuales complejas y especializadas conocidas como gametangios, distinguibles por su morfologia y tamano.
There is convincing evidence that, among Chlorophyta (s.l.), members of the Charophyceae (e.g., Coleochaete, Nitella, Chara) possibly offer critically important clues to landplant origin (Prescott, 1968; Graham, 1984, 1993); some authors (e.g., Bold et al., 1987) recognize the Charophyceae as "Charophyta," a division distinct from Chlorophyta, perhaps more closely related to embryophyte plants (than other green algae).
The apical biflagellation of bryophytes and most lycopods is perhaps traceable to a similar pattern in green algae (Bold & Wynne, 1985; Gifford & Foster, 1989; Van den Hoek et al., 1995), including members of the Charophyceae. Flagellation of sperm in land plants is a trait retained to achieve fertilization in aquatic (or past aquatic) environments.
A possible exception, the Silurian genus Parka, is parenchymatous and padlike (Taylor & Taylor, 1993) and, if eventually demonstrated to be a gametophyte, may be concluded to resemble Coleochaete (Charophyceae).
Walker, "Biomineralization in the Charophyceae sensu lato," in Biomineralization in Lower Plants and Animals, B.
(AEP, Espana, Chara, Nitella, Tolypella, Charophyceae, Veget, Bioin).