COMPARATIVE ASSESSMENT OF MACROSCOPIC AND MICROSCOPIC CHARACTERISTICS OF PATHOGENIC AND POTENTIALLY PATHOGENIC STRAINS OF ASPERGILLI

Abstract

Macroscopic features of colonies and microscopic characteristics of certain strains of
the aspergilli− A. flavus and A. niger- isolated from soil, air and patients suffering
from aspergillosis were examined. The samples obtained from patients yielded A.
flavus and A. niger, not A. fumigatus which is the leading cause of aspergillosis in
certain geographical areas of the world. Different media supported the growth of the
strains to different extent. The strains of A. niger exhibited exudation on PDA and
green velvety growth on RSA medium. The pathogenic strains of A. flavus exhibited
white and fluffy margins on CSNAM and SA upto 15 days