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Abstract:

The ultrastructure of zoospores of Asterococcus superbus (Cienk.) Scherffel was studied to provide ultrastructural data relevant to the systematic position of the genus. Our results demonstrated that the motile cells of A. superbus were similar to those of the tetrasporalean algae, such as Tetraspora sp. and Tetrasporidium javanicum Moebius. The flagellar apparatus of A. superbus had the same clock-wise orientation of basal bodies and the V-shaped alignment of basal bodies as Tetraspora cylindrica (Wahlb.) Ag. and T. lubrica (Roth) Ag., but differed by having rhizoplasts. The motile cells of A. superbus displayed chlamydomonadal ultrastructure, similar to Chlamydomonas reinhardtii Dangeard, including the absolute configuration of the flagellar apparatus. The pyrenoid matrix in A. superbus, however, showed a large lateral invagination occupied by chloroplast stroma, a characteristic that has never been observed in Chlorophyta.

Registro:

Documento: Artículo
Título:Fine structure of biflagellate zoospores of Asterococcus superbus (Tetrasporales, Chlorophyceae), including the absolute configuration of the flagellar apparatus
Autor:Leonardi, P.I.; Rodríguez, M.C.; Cáceres, E.J.
Filiación:Lab. de Ficologia y Micologia, Depto. de Biol., Bioquim. y Farmacia, Universidad Nacional del Sur, 8000 Bahía Blanca, Argentina
Depto. de Ciencias Biológicas, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina
Palabras clave:Absolute configuration; Asterococcus; Asterococcus superbus; Chlamydomonadales; Fine structure; Flagellar apparatus; Pyrenoid; Tetrasporales; Volvocales; Zoospores; Asterococcus superbus; Chlamydomonas reinhardtii; Tetraspora; Tetraspora cylindrica; Tetraspora lubrica; Tetrasporidium javanicum
Año:2000
Volumen:36
Número:4
Página de inicio:714
Página de fin:722
DOI: http://dx.doi.org/10.1046/j.1529-8817.2000.99074.x
Título revista:Journal of Phycology
Título revista abreviado:J. Phycol.
ISSN:00223646
CODEN:JPYLA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00223646_v36_n4_p714_Leonardi

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Citas:

---------- APA ----------
Leonardi, P.I., Rodríguez, M.C. & Cáceres, E.J. (2000) . Fine structure of biflagellate zoospores of Asterococcus superbus (Tetrasporales, Chlorophyceae), including the absolute configuration of the flagellar apparatus. Journal of Phycology, 36(4), 714-722.
http://dx.doi.org/10.1046/j.1529-8817.2000.99074.x
---------- CHICAGO ----------
Leonardi, P.I., Rodríguez, M.C., Cáceres, E.J. "Fine structure of biflagellate zoospores of Asterococcus superbus (Tetrasporales, Chlorophyceae), including the absolute configuration of the flagellar apparatus" . Journal of Phycology 36, no. 4 (2000) : 714-722.
http://dx.doi.org/10.1046/j.1529-8817.2000.99074.x
---------- MLA ----------
Leonardi, P.I., Rodríguez, M.C., Cáceres, E.J. "Fine structure of biflagellate zoospores of Asterococcus superbus (Tetrasporales, Chlorophyceae), including the absolute configuration of the flagellar apparatus" . Journal of Phycology, vol. 36, no. 4, 2000, pp. 714-722.
http://dx.doi.org/10.1046/j.1529-8817.2000.99074.x
---------- VANCOUVER ----------
Leonardi, P.I., Rodríguez, M.C., Cáceres, E.J. Fine structure of biflagellate zoospores of Asterococcus superbus (Tetrasporales, Chlorophyceae), including the absolute configuration of the flagellar apparatus. J. Phycol. 2000;36(4):714-722.
http://dx.doi.org/10.1046/j.1529-8817.2000.99074.x