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Chinese Journal of Biotechnology ; (12): 1223-1233, 2013.
Article in Chinese | WPRIM | ID: wpr-242487


Mannosylerythritol lipids (MELs), mainly produced by Ustilago and Pseudozyma, are surface active compounds that belong to the glycolipid class of biosurfactants. MELs have potential application in food, pharmaceutical and cosmetics industries due to their excellent surface activities and other peculiar bioactivities. In recent years, the research field of MELs has regained much attention abroad. However, MELs are rarely studied in China. In this review, the producing microorganisms and production conditions, diverse structures, biochemical properties, structure-function relationship and biosynthetic pathways of MELs are described. Some research problems and prospects are summarized and discussed as well.

Glycolipids , Genetics , Metabolic Networks and Pathways , Genetics , Surface-Active Agents , Metabolism , Ustilaginales , Classification , Genetics , Metabolism , Ustilago , Genetics , Metabolism
The Korean Journal of Laboratory Medicine ; : 284-288, 2010.
Article in English | WPRIM | ID: wpr-164236


A yeast-like strain was isolated from the brain abscess of a patient diagnosed with astrocytoma. Morphological and molecular analysis on D1/D2 domain in the 26S rRNA gene and internal transcript spacer region of the strain revealed that the strain belonged to the genus Pseudozyma. To the best of our knowledge, this is the first report on the isolation of a Pseudozyma strain from brain abscess.

Aged , Humans , Male , Astrocytoma/complications , Brain Abscess/complications , Brain Diseases/complications , DNA, Fungal/genetics , Mycological Typing Techniques , Phylogeny , RNA, Ribosomal/genetics , Ustilaginales/classification
Indian J Exp Biol ; 2000 Jun; 38(6): 525-39
Article in English | IMSEAR | ID: sea-57927


Karnal bunt of wheat, incited by a phytopathogen Tilletia indica (Syn. Neovossia indica) is a floret infecting disease. In the floral tissues fungus proliferates and produces massive amount of black spores. In smut fungi, belonging to order Ustilaginales, communication between cells is necessary to regulate growth, differentiation and monokaryotic to dikaryotic transition during pathogenic and sexual development. Neighbouring cells are able to communicate with each other by direct cell to cell contact through plasma membrane bound signaling molecules or through formation of gap junctions and alternatively through secretion of chemical signals if cells are some distance away. Current research efforts toward understanding of pathogenic and sexual development in phytopathogenic fungi, offer a number of opportunities. These include the analysis of molecular signal(s) for direct contribution of sexual interactions to ability of smut and bunt pathogens to cause disease. These efforts will provide not only to explore the mechanisms of pathogenesis, but also to enhance knowledge of basic cellular biology of an economically important group of fungi.

Cell Communication , Forecasting , Fungal Proteins/genetics , Gap Junctions/physiology , Models, Biological , Plant Diseases/microbiology , Plant Growth Regulators/physiology , Plant Proteins/physiology , Protein Kinases/physiology , Reproduction , Signal Transduction , Spores, Fungal , Triticum/microbiology , Ustilaginales/cytology , Virulence