ePrints@IIScePrints@IISc Home | About | Browse | Latest Additions | Advanced Search | Contact | Help

New pathway for the biodegradation of indole in Aspergillus niger

Kamath, AV and Vaidyanathan, CS (1990) New pathway for the biodegradation of indole in Aspergillus niger. In: Applied and Environmental Microbiology, 56 (1). pp. 275-280.

[img] PDF
Path.pdf - Published Version
Restricted to Registered users only

Download (1254Kb) | Request a copy
Official URL: http://aem.asm.org/cgi/content/abstract/56/1/275

Abstract

Indole and its derivatives form a class of toxic recalcitrant environmental pollutants. The growth of Aspergillus niger was inhibited by very low concentrations (0.005 to 0.02%) of indole, even when 125- to 500-fold excess glucose was present in the medium. When 0.02% indole was added, the fungus showed a lag phase for about 30 h and the uptake of glucose was inhibited. Indole was metabolized by a new pathway via indoxyl (3-hydroxyindole), N-formylanthranilic acid, anthranilic acid,2,3-dihydroxybenzoic acid, and catechol, which was further degraded by ortho cleavage. The enzymes N-formylanthranilate deformylase, anthranilate hydroxylase, 2,3-dihydroxybenzoate decarboxylase, and catechol dioxygenase were induced by indole as early as after 5 h of growth, and their activities were demonstrated in a cell-free system.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to American Society for Microbiology.
Department/Centre: Division of Biological Sciences > Biochemistry
Date Deposited: 27 Apr 2011 05:10
Last Modified: 27 Apr 2011 05:10
URI: http://eprints.iisc.ernet.in/id/eprint/35028

Actions (login required)

View Item View Item