Max Freudenthal : gestorben 10. Juli 1937

Aaron Freimann

Max Freudenthal [Rezension]

J. S.

Herr A. Freudenthal aus Nakel

H. C.

Jakob Freudenthal [Illustration] : (Porträt)

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Prof. Dr. Jacob Freudenthal [Illustration] : (Porträt)

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Freudenthal Max [Rezension]

-ld.

Dr. Max Freudenthal zu seinem 60. Geburtstag

Max Bernheimer

Nachtrag zu dem Aufsatz von Dr. Max Freudenthal: "Zum Jubiläum des ersten Talmuddrucks in Deutschland" [Nachricht]

Julian Landsberger

Gut Purim! [Illustration] : Aus der Kunstgewerbestube Freudenthal, Breslau

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Le-sana tova tikatevu [Neujahrsgruß] [Illustration] : Aus der Kunstgewerbestube Freudenthal, Breslau

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Dr. Max Freudenthal: Leipziger Messgäste ... [Rezension]

Kurt Wilhelm

Rapid isolation of high-quality RNA from symbiotic dinoflagellates

This report details a reliable and efficient RNA extraction protocol for the symbiotic dinoflagellate Symbiodinium microadriaticum Freudenthal (Gymnodiniales, Dinophyceae). The method typically gives yields of 500 mu g total RNA from 0.4 g wet weight of algae, and, in comparison to current protocols, it is technically simple and less time consuming. This method isolates high-quality, intact RNA from in vine cultured as well as host-isolated cells, as demonstrated by spectrophotometry, gel electrophoresis, and northern analysis. The total RNA obtained was suitable for reverse transcription and PCR amplification of Symbiodinium cDNAs. We have successfully applied our method to isolate total RNA from a different dinoflagellate, Amphidinium carterae Hulburt (Gymnodiniales, Dinophyceae), found in symbiotic association with marine invertebrates.

Low symbiont diversity in southern Great Barrier Reef corals, relative to those of the Caribbean

The specific identity of endosymbiotic dinoflagellates (Symbiodinium spp.) from most zooxanthellate corals is unknown. In a survey of symbiotic cnidarians from the southern Great Barrier Reef (GBR), 23 symbiont types were identified from 86 host species representing 40 genera. A majority (>85%) of these symbionts belong to a single phylogenetic clade or subgenus (C) composed of closely related (as assessed by sequence data from the internal transcribed spacer region and the ribosomal large subunit gene), yet ecologically and physiologically distinct, types. A few prevalent symbiont types, or generalists, dominate the coral community of the southern GBR, whereas many rare and/or specific symbionts, or specialists, are found uniquely within certain host taxa. The comparison of symbiont diversity between southern GBR and Caribbean reefs shows an inverse relationship between coral diversity and symbiont diversity, perhaps as a consequence of more-rapid diversification of Caribbean symbionts. Among clade C types, generalists C1 and C3 are common to both Caribbean and southern GBR symbiont assemblages, whereas the rest are regionally endemic. Possibly because of environmental changes in the Caribbean after geographic isolation through the Quaternary period, a high proportion of Caribbean fauna associate with symbiont taxa from two other distantly related Symbiodinium clades (A and B) that rarely occur in Pacific hosts. The resilience of Porites spp. and the resistance of Montipora digitata to thermal stress and bleaching are partially explained by their association with a thermally tolerant symbiont type, whereas the indiscriminant widespread bleaching and death among certain Pacific corals, during El Nino Southern Oscillation events, are influenced by associations with symbionts possessing higher sensitivity to thermal stress.

Nordboarnes skepp och sjöfärder i forna dagar

Tekijä lopusta: A. O. F.

Finska kriget 1808-9

Tekijä lopusta: A. O. F.