AEM
Home Help [Feedback] [For Subscribers] [Archive] [Search] [Contents]
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrowReprints and Permissions
Right arrow Copyright Information
Right arrow Books from ASM Press
Right arrow MicrobeWorld
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Arai, T.
Right arrow Articles by Mikami, Y.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Arai, T.
Right arrow Articles by Mikami, Y.
Agricola
Right arrow Articles by Arai, T.
Right arrow Articles by Mikami, Y.

 Previous Article  |  Next Article 

Appl Environ Microbiol. 1972 November; 24(5): 768-771
Copyright © 1972 American Society for Microbiology. All Rights Reserved.

Chromogenesis mirabilis in Streptomyces griseus

Tadashi Arai and Yuzuru Mikami

Department of Antibiotics, Institute of Food Microbiology, Chiba University, Narashino, Chiba, Japan

ABSTRACT

A number of chromogenic Streptomyces, producing diffusible melanoid pigment on complex organic media, fail to form melanin pigment on conventionally used synthetic tyrosine agar. By means of our new melanin formation test, almost all the chromogenic streptomyces can now be detected in chemically defined medium. In contrast to ordinary chromogenic streptomyces, two streptomyces species of the International Streptomyces Project, S. griseus ISP 5236 and S. ornatus ISP 5307, produce melanin pigment only on synthetic tyrosine agar, without showing chromogenicity on complex organic media. From the results obtained with S. griseus ISP 5236 and S. phaeochromogenes ISP 5073, it was revealed that melanin formation by Streptomyces, in general, is inhibited by L-cysteine present in organic nitrogen sources incorporated into natural media. Most chromogenic species of streptomyces produce a higher level of tyrosinase and rapidly utilize L-cysteine in the culture media which result in the manifestation of good chromogenicity on natural media. Peculiarity of chromogenicity of S. griseus and S. ornatus might be due to the lower ability to produce tyrosinase and to utilize L-cysteine in the culture medium.

Appl Environ Microbiol. 1972 November; 24(5): 768-771
Copyright © 1972 American Society for Microbiology. All Rights Reserved.





Home Help [Feedback] [For Subscribers] [Archive] [Search] [Contents]
J. Bacteriol. Microbiol. Mol. Biol. Rev. Eukaryot. Cell All ASM Journals

Copyright © 1972 by the American Society for Microbiology. All rights reserved.