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Titolo:
SUPPRESSION OF LAMINARIA SPORELINGS BY ALLELOCHEMICALS FROM CORALLINERED ALGAE
Autore:
DENBOH T; SUZUKI M; MIZUNO Y; ICHIMURA T;
Indirizzi:
HOKKAIDO UNIV,FAC SCI,INST ALGOL RES MURORAN HOKKAIDO 051 JAPAN HOKKAIDO UNIV,GRAD SCH ENVIRONM EARTH SCI,DIV MAT SCI SAPPORO HOKKAIDO 060 JAPAN
Titolo Testata:
Botanica marina
fascicolo: 3, volume: 40, anno: 1997,
pagine: 249 - 256
SICI:
0006-8055(1997)40:3<249:SOLSBA>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
GREEN SEA-URCHIN; LARVAL SETTLEMENT; STRONGYLOCENTROTUS-DROEBACHIENSIS; PSEUDOCENTROTUS-DEPRESSUS; ANTHOCIDARIS-CRASSISPINA; METAMORPHOSIS; INDUCTION; MACROALGAE; PILULIFERA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
15
Recensione:
Indirizzi per estratti:
Citazione:
T. Denboh et al., "SUPPRESSION OF LAMINARIA SPORELINGS BY ALLELOCHEMICALS FROM CORALLINERED ALGAE", Botanica marina, 40(3), 1997, pp. 249-256

Abstract

We investigated whether allelochemicals that could suppress other algae were released from the coralline red algae, Corallina pilulifera and Pneophyllum zostericolum, Bialgal cultures were composed of either of the two coralline species and Laminaria sporelings in a millicell-CMinsert. Higher culture temperatures tended to increase suppressive activities of both coralline algae against female gametophyte maturationand normal sporophyte formation of Laminaria. Even if dissolved iron,which is known to be required for the gametophyte maturation, was amply supplied to PES medium, the suppressive activity was still recognized. In bialgal cultures, when C. pilulifera and L. japonica sporelingswere horizontally placed, the suppressive activity decreased comparedto those vertically placed. Suppressive effects against the female gametophyte maturation in the conditioned medium of C. pilulifera was apparently lower than those in bialgal cultures. These results led us toassume that allelochemicals released from the coralline algae suppressed development of Laminaria sporelings and that they were volatile and/or labile substances. Three kinds of volatile halomethanes known to be released from C. pilulifera: bromoform, dibromochloromethane, and dibromomethane, were examined for suppressive effects on the development of L. angustata sporelings. Bromoform at a concentration as low as 3ppm apparently reduced the normal sporphyte formation. Dibromochloromethane and dibromomethane showed weaker toxicities; both halomethanes contain less bromine atoms than bromoform. However, since we could detect only extremely low concentrations of bromoform in the cultures of C. pilulifera, we came to the conclusion that the actual allelochemicals in the bialgal cultures could not be the above halomethanes.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 21:58:56