Accession Number:

ADA222771

Title:

Survival of Microorganisms and Bacterial Predation and Competition in Nature

Descriptive Note:

Final rept. 1 Apr 1985-31 Mar 1990,

Corporate Author:

PENNSYLVANIA STATE UNIV UNIVERSITY PARK

Personal Author(s):

Report Date:

1990-05-01

Pagination or Media Count:

8.0

Abstract:

In general, both predator and prey bacterial species in soil are dormant much of the time. This seems to be a means of avoiding starvation, desiccation, and predation. For many species of soil bacteria, the breaking of dormancy is controlled by small amounts of either magnesium or copper. The cells need the metal to allow breaking of dormancy. However, there usually isnt enough of the respective metal that is readily available in the environment. Therefore, the cells produce a specific peptide growth initiation factor GIF which chelates the respective metal scavenges if from the environment to make it available to the cells. The cells then break dormancy and start growth. The cells do not need the GIF for their growth, however only to initiate growth. JES

Subject Categories:

  • Microbiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE