Harmful or harmless: Biological effects of marennine on marine organisms.

Marennine is a water-soluble blue-green pigment produced by the marine diatom Haslea ostrearia. The diatom and its pigment are well known from oyster farming areas as the source of the greening of oyster gills, a natural process increasing their market value in Western France. Blooms of blue Haslea are also present outside oyster ponds and hence marine organisms can be exposed, periodically and locally, to significant amounts of marennine in natural environments.

Fungal Nomenclature at IMC10: Report of the Nomenclature Sessions.

Three Nomenclature Sessions were convened during the 10(th) International Mycological Congress (IMC10) in Bangkok on 3-8 August 2014. In addition a Questionnaire was given to all delegates. This Report reviews and summarizes the views expressed in the Sessions and in the responses to the Questionnaire.

Phylogenomic evidence for separate acquisition of plastids in cryptophytes, haptophytes, and stramenopiles.

According to the chromalveolate hypothesis (Cavalier-Smith T. 1999. Principles of protein and lipid targeting in secondary symbiogenesis: euglenoid, dinoflagellate, and sporozoan plastid origins and the eukaryote family tree.

Metabolomic analysis of Echinacea spp. by 1H nuclear magnetic resonance spectrometry and multivariate data analysis technique.

Introduction: The genus Echinacea (Asteraceae) comprises about 10 species originally distributed in North America. Three species are very well known as they are used worldwide as medicinal plants: Echinacea purpurea, E. pallida, E.

History and clinical features of atypical myopathy in horses in Belgium (2000-2005).

Background: The emergent nature of atypical myopathy or atypical myoglobinuria (AM) necessitates precise description of its clinical and epidemiologic features.

Purpose: To define key features of AM to help practitioners recognize the disease and to advise owners to take preventive measures.

Animals: Belgian cases of AM confirmed by histology (CC horses; n = 57) from autumn 2000 to spring 2005 were included in the study.

Madangolide and laingolide A, two novel macrolides from lyngbya bouillonii (Cyanobacteria).

Two new macrolide derivatives, madangolide (2) and laingolide A (3), have been isolated from the cyanobacterium Lyngbya bouillonii, collected in Papua New Guinea. Their structures (without stereochemistry) have been established by detailed high-field 1D and 2D NMR studies and, in the case of 3, by comparison with the spectroscopic data of laingolide (1), previously isolated from the same organism.

Overexpression, purification and characterization of Mycobacterium bovis BCG alcohol dehydrogenase.

A previous study of the effect of zinc deprivation on Mycobacterium bovis BCG pointed out the potential importance of an alcohol dehydrogenase for maintaining the hydrophobic character of the cell envelope. In this report, the effect of the overexpression of the M. bovis BCG alcohol dehydrogenase (ADH) in Mycobacterium smegmatis and M.

A parsimonay analysis of eukaryotic small subunit ribosomal RNA ("18 S") sequences.

Using the principles of Felsenstein's DNA parsimony analysis program (package PHYLIP 3.2), a program with the capacity to handle data sets of the magnitude of ss rRNA has been developed. With this program we applied an heuristic approach to 83 s rRNA sequences from the Antwerp data bank, compared along 4230 positions of their alignment.

The red algal-higher fungi phylogenetic link: the last ten years.

The review of the red algal theory for ancestry of Ascomycetes and Basidiomycetes published 10 years ago by the author is updated. Criticisms are answered and new data are discussed. The production of choline sulfate, lenthionine and lanosol are added to the biochemical similarities between red algae and higher fungi.

[Occurrence of lomasomes in the basidiospore of Hypholoma fasciculare (Huds. ex Fr.) kummer as revealed by freeze-etching].

Lomasomes were shown to be present in mature basidiospores of Hypholoma fasciculare using the freeze-etching technique. Grooves in the plasmalemma were also generally observed. It is suggested that lomasomes are related to the elaboration of the chitinous spore wall and, in accordance with the views of Campbell, plasmalemma grooves are connected with the melanisation of its outer parts.

[A proposed method for detection of phenoloxydases and peroxydases in macromycetes. Application to several gasteromycetes].

A detection process for fungal phenoloxydases and peroxydases is proposed. According to the material available, an accurate method or faster tests can be used. Special attention is given to the optimum pH, a frequently neglected factor.