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Titolo:
STUDIES ON INITIATION AND DEVELOPMENT OF THE PARTNER ASSOCIATION IN GEOSIPHON PYRIFORME (KUTZ) V WETTSTEIN, A UNIQUE ENDOCYTOBIOTIC SYSTEM OF A FUNGUS (GLOMALES) AND THE CYANOBACTERIUM NOSTOC-PUNCTIFORME (KUTZ) HARIOT
Autore:
MOLLENHAUER D; MOLLENHAUER R; KLUGE M;
Indirizzi:
FORSCH INST SENCKENBERG,AUSSENSTELLE LOCHMUHLE D-63599 BIEBERGEMUND GERMANY TH DARMSTADT,INST BOT D-6100 DARMSTADT GERMANY
Titolo Testata:
Protoplasma
fascicolo: 1-4, volume: 193, anno: 1996,
pagine: 3 - 9
SICI:
0033-183X(1996)193:1-4<3:SOIADO>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Keywords:
CYANOBACTERIA; ENDOCYTOBIOSIS; ENDOSYMBIOSIS; GEOSIPHON; NOSTOC; PHAGOCYTOSIS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
24
Recensione:
Indirizzi per estratti:
Citazione:
D. Mollenhauer et al., "STUDIES ON INITIATION AND DEVELOPMENT OF THE PARTNER ASSOCIATION IN GEOSIPHON PYRIFORME (KUTZ) V WETTSTEIN, A UNIQUE ENDOCYTOBIOTIC SYSTEM OF A FUNGUS (GLOMALES) AND THE CYANOBACTERIUM NOSTOC-PUNCTIFORME (KUTZ) HARIOT", Protoplasma, 193(1-4), 1996, pp. 3-9

Abstract

Phagocytosis of Nostoc filaments by Geosiphon, a fungus closely related to AM forming Glomales, was observed under light microscopes. Incorporation can only be performed if Nostoc primordia come into contact with growing hyphal rips of the fungus. The fungal wall just below the apex softens, and fungal cytoplasm is bulged out repeatedly covering the vegetative Nostoc cells but not the heterocytes. New heterocytes are differentiated by the internalised filament whose cells can increaseup to ten times in volume after recovering from incorporation strain. The Nostoc cells are coated stepwise by short finger-shaped protuberances of the fungal hypha. These hernia-like outgrowths first remain separated, after 1 to 2 days they merge. Adjacent hyphal walls inside the complex covering disintegrate. Periphal fungal wall portions are united to form a smooth strong outer envelope. Internalisation is categorised as phagocytosis. The partnership is partly specific, Nostoc strains capable of living endocytobiotically are often partners in other symbioses besides Geosiphon.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 08/07/20 alle ore 07:10:38