Gram-negative and gram-positive bacteria are themost
common types of bacteria in most soil habitats. Only
two genera of bacteria, Mycobacterium and Nocardia, are
known to have an acid-fast envelope (5). Mycobacterium
and Nocardia are present in many soils, and several
species are pathogenic to animals or humans. Both groups
are classified with the actinomycetes, a distinctive group
of soil bacteria.
Landwirtschaftliche Anwendung
Mycobacterium is a bacterium which produces and gives
out an easily detectable amount of niacin into an agar
medium. It is a member of a group of bacteria which
include human pathogens responsible for diseases like
tuberculosis or leprosy.
