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Titolo:
MITOSIS IN THE YEAST PHASE OF AGARICOSTILBUM-PULCHERRIMUM AND ITS EVOLUTIONARY SIGNIFICANCE
Autore:
FRIEDERS EM; MCLAUGHLIN DJ;
Indirizzi:
UNIV MINNESOTA,DEPT PLANT BIOL,1445 GORTNER AVE ST PAUL MN 55108
Titolo Testata:
Canadian journal of botany
fascicolo: 9, volume: 74, anno: 1996,
pagine: 1392 - 1406
SICI:
0008-4026(1996)74:9<1392:MITYPO>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
SPINDLE-POLE BODY; FUNGUS NECTRIA-HAEMATOCOCCA; SOMATIC NUCLEAR DIVISION; HETEROBASIDIOMYCETOUS YEASTS; ULTRASTRUCTURAL BASIS; USTILAGO-VIOLACEA; FUSARIUM-SOLANI; RIBOSOMAL-RNA; SEXUAL STAGE; SMUT FUNGUS;
Keywords:
BASIDIOMYCETE; CELL CYCLE; CYTOSKELETON; IMMUNOFLUORESCENCE; PHYLOGENY; SPINDLE POLE BODY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
46
Recensione:
Indirizzi per estratti:
Citazione:
E.M. Frieders e D.J. Mclaughlin, "MITOSIS IN THE YEAST PHASE OF AGARICOSTILBUM-PULCHERRIMUM AND ITS EVOLUTIONARY SIGNIFICANCE", Canadian journal of botany, 74(9), 1996, pp. 1392-1406

Abstract

Agaricostilbum pulcherrimum is an anomaly and is difficult to place systematically. It possesses a yeast phase, and as in most basidiomycetous yeasts, mitosis has not been investigated cytologically. Yeast cells of A. pulcherrimum were prepared for immunofluorescence and transmission electron microscopy by a freeze-substitution method. A cladisticanalysis of cell cycle characters among A. pulcherrimum and two ascomycetous and two basidiomycetous yeasts, performed with phylogenetic analysis using parsimony, revealed that A. pulcherrimum is basal within these basidiomycetes. Spindle pole bodies are multilayered discs and appear to be intranuclear during early division, similar to meiotic division. Spindle initiation and early elongation occur in the parent, a situation unreported in basidiomycetous yeasts. The site of spindle initiation, the position of the nucleus during division, and the patternof astral microtubules demonstrate that the mode of nuclear division in A, pulcherrimum is intermediate between those of the investigated ascomycetous and basidiomycetous yeasts.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/07/20 alle ore 20:57:02