Results 151 to 160 of about 1,742 (179)

Bioactive volatile organic compounds from Antarctic (sponges) bacteria

New Biotechnology, 2013
Antarctic bacteria represent a reservoir of unexplored biodiversity, which, in turn, might be correlated to the synthesis of still undescribed bioactive molecules, such as antibiotics. In this work we have further characterized a panel of four marine Antarctic bacteria able to inhibit the growth of human opportunistic multiresistant pathogenic bacteria
Maria Cristiana Papaleo, Gianluca Bartolucci, Elena Perrin   +2 more
exaly   +7 more sources

Antagonistic interactions between psychrotrophic cultivable bacteria isolated from Antarctic sponges: a preliminary analysis

Research in Microbiology, 2009
The present work was aimed at studying antagonistic interactions existing among cultivable bacteria associated with the Antarctic sponges Anoxycalyx joubini and Lissodendoryx nobilis.
Santina Mangano, Luigi Michaud, Matteo Brilli   +2 more
exaly   +2 more sources

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A New Sesquiterpene Alcohol from an Antarctic sponge

Natural Product Letters, 1995
An Antarctic sponge, has yielded the antibiotic sesquiterpene alcohol (8). The relative stereostructure of (8) was secured by detailed spectroscopic analysis, while the absolute configuration was tentatively assigned by examination of the CD spectrum.
Urban, S, Wilton, H, Lu, CC, Capon, RJ
openaire   +4 more sources

Are diatoms a food source for Antarctic sponges?

Chemistry and Ecology, 2004
Living diatoms are commonly found within Antarctic Porifera, and generally interpreted as additional food source, or as mutualists or parasites of sponge tissues. However, no data are available about temporal variations of the abundance of diatoms inside sponges especially during the winter period.
CERRANO, CARLO, CALCINAI B, CUCCHIARI E, DI CAMILLO C, NIGRO M, REGOLI M, SARA A, SCHIAPARELLI, STEFANO, TOTTI C, BAVESTRELLO, GIORGIO   +9 more
openaire   +3 more sources

Diatom invasion in the antarctic hexactinellid sponge Scolymastra joubini

Polar Biology, 2000
Sponges often host large amounts of symbionts, mainly represented by cyanobacteria and dinoflagellates. Recent findings show a widespread presence of symbiotic diatoms living inside antarctic demosponges. In this paper, the invasion by large populations of the diatom Melosira sp.
CERRANO C., ARILLO, ATTILIO, BAVESTRELLO, GIORGIO, CALCINAI B., CATTANEO VIETTI, RICCARDO, PENNA A., SARA' M., TOTTI C.   +7 more
openaire   +3 more sources

Alkaloids from the antarctic sponge Kirkpatrickia varialosa.

Tetrahedron, 1994
Abstract Variolin B (1), a new type of pyridopyrrolopyrimidine alkaloid with antitumour and antiviral properties, has been isolated from the Antarctic sponge Kirkpatrickia varialosa, and its structure determined by X-ray crystallography. A degradation product, variolin D (2), has been identified from its spectroscopic data.
Nigel B. Perry, Laurent Ettouati, Marc Litaudon, John W. Blunt, Murray H.G. Munro, Sean Parkin, Hakon Hope   +6 more
openaire   +1 more source

Do hexactinellids structure antarctic sponge associations?

Ophelia, 1992
Abstract This paper presents an idea on the possible structuring effect of hex actinellids on Antarctic sponge associations. To this end, information derived from underwater photography performed on the eastern Weddell Sea shelf is reported and original trawl data are presented.
openaire   +3 more sources

Bispecific Chimerid Sponges from the Antarctic

Nature, 1966
IT is not unusual to find two different sponge species growing together intimately. One sponge often uses another as substrate, either encrusting, growing up from it, or surrounding it laterally. Topsent1 and Kirkpatrick2 have each reported a case in which one sponge is completely surrounded by another, with only its osculae projecting to the exterior.
openaire   +1 more source

New Sesterterpenes from the Antarctic Sponge Suberites sp.

Journal of Natural Products, 2004
Suberitenones C and D and suberiphenol, three new sesterterpenes of the suberitane class, were isolated from the sponge Suberites sp. collected from Antarctica. The structures of these compounds were determined on the basis of combined spectral and chemical analyses.
Hyi-Seung, Lee, Jong-Woong, Ahn, Youn-Ho, Lee, Jung-Rae, Rho, Jongheon, Shin   +4 more
openaire   +2 more sources

Viviparous development in the Antarctic sponge Stylocordyla borealis Loven, 1868

Polar Biology, 2002
The complete larval development of the deep-sea sponge Stylocordyla borealis (from eggs to young sponges) was followed in sponges from the Antarctic waters of Terra Nova Bay. S. borealis shows a viviparous strategy which leads to young complete sponges incubated in the mother body, with cortex, spicules and choanocyte chambers.
SARA, CERRANO, CARLO, SARA M.
openaire   +2 more sources