Relation to copper of N-1, a nonobligate bacterial predator

Journal Article · Wed Jul 01 00:00:00 EDT 1987 · Appl. Environ. Microbiol.; (United States)

OSTI ID:5968720

Casida, Jr, L E

Nonobligate bacterial predator strain N-1 was highly resistant to copper. In fact, it required more than minimal amounts of copper to initiate growth, but not for growth that followed growth initiation. Strain N-1 made a peptide growth initiation factor (GIF) to marshal copper from its environment for growth initiation. Production of this GIF occurred before the onset of growth initiation, but production was shut down if excess copper was present. At high copper levels, the time required for onset of growth initiation was directly related to the amount of copper that was present. At low copper levels, a similar graded response occurred for increments of added GIF. Agromyces ramosus is a predator in its own right, but it also is a prey species for strain N-1. A. ramosus was found to be very sensitivity to copper and to the copper GIF produced by N-1. It is possible that the copper GIF is the means used by N-1 to kill A. ramosus.

• Research Organization: Pennsylvania State Univ., University Park
• OSTI ID: 5968720
• Journal Information: Appl. Environ. Microbiol.; (United States), Vol. 53:7
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BACTERIA
GROWTH
SENSITIVITY
COPPER
TOXICITY
GROWTH FACTORS
PREDATOR-PREY INTERACTIONS
ELEMENTS
METALS
MICROORGANISMS
MITOGENS
ORGANIC COMPOUNDS
PROTEINS
TRANSITION ELEMENTS
560300* - Chemicals Metabolism & Toxicology