Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Cell structure and asexual reproduction in Lagynion delicatulum (Stylococcaceae, Chrysophyceae)
Autore:
OKelly, CJ; Wujek, DE;
Indirizzi:
Bigelow Lab Ocean Sci, W Boothbay Harbor, ME 04575 USA Bigelow Lab Ocean Sci W Boothbay Harbor ME USA 04575 Harbor, ME 04575 USA Cent Michigan Univ, Dept Biol, Mt Pleasant, MI 48859 USA Cent Michigan Univ Mt Pleasant MI USA 48859 ol, Mt Pleasant, MI 48859 USA
Titolo Testata:
EUROPEAN JOURNAL OF PHYCOLOGY
fascicolo: 1, volume: 36, anno: 2001,
pagine: 51 - 59
SICI:
0967-0262(200102)36:1<51:CSAARI>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
FLAGELLAR APPARATUS; ALGAE;
Keywords:
algal morphology; Chromulinales; Chrysomonadida; Chrysophyceae; flagellar apparatus; Hibberdia; Hibberdiales; Lagynian delicatulum; Stylococcaceae; ultrastructure;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: O'Kelly, CJ Bigelow Lab Ocean Sci, W Boothbay Harbor, ME 04575 USA BigelowLab Ocean Sci W Boothbay Harbor ME USA 04575 4575 USA
Citazione:
C.J. O'Kelly e D.E. Wujek, "Cell structure and asexual reproduction in Lagynion delicatulum (Stylococcaceae, Chrysophyceae)", EUR J PHYC, 36(1), 2001, pp. 51-59

Abstract

Lagynion delicatulum Skuja is a first record for New Zealand freshwaters. Individual vegetative cells in nature and culture were sessile, aflagellate, and surrounded by a hyaline lorica lacking mineral deposits. Cells were uninucleate, had one or two chloroplasts with girdle lamellae and ring nucleoids, several mitochondria, and two to four basal-body-like centrioles, Cell division was followed by the release of one or both progeny from the parent lorica as biflagellate zoospores without eyespots. The anterior flagellum bore a tomentum of fine fibrils and two balanced rows of tripartite tubular hairs. The posterior flagellum was short, scarcely visible with light microscopy. A paraflagellar rod and paraflagellar vanes were associated with its axoneme. The flagellar apparatus consisted of two basal bodies and three microtubular roots. The coplanar basal bodies diverged from each other atan angle of approximately 130 degrees. Simple transitional helices were present. No root that could be identified with the R3 root of other stramenapiles was present. Settling zoospores produced a few Long pseudopods, and lost flagella by abscission. Cells forming loricas had a circumferential array of numerous short pseudopodia. Similarities in morphology and reproduction suggest that at least those Stylococcaceae with apparently uniflagellate swarmers form a monophyletic group. Flagellar apparatus similarities between Lagynion and Hibberdia suggest a relationship, but this is not supported by previously-published phylogenies reconstructed from molecular sequences. Convergent evolution of flagellar apparatus architecture is a possibility.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/04/20 alle ore 08:00:24