Stimulation by Hyphopichia burtonii and Bacillus amyloliquefaciens of aflatoxin production by Aspergillus flavus in irradiated maize and rice grains

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

OSTI ID:6352374

Cuero, R G; Smith, J E; Lacey, J

Aspergillus flavus was grown on maize and rice extract agars and on irradiated viable cracked maize and rice grains, either in pure culture or in dual culture with wild strains of either Hyphopichia burtonii or Bacillus amyloliquefaciens. Aflatoxin production by A. flavus and its growth and interactions with the other microorganisms were studied at three water activities (a/sub w/) (0.98, 0.95, and 0.90) and two temperatures (25 and 16/sup 0/C). Both H. burtonii and B. amyloliquefaciens markedly stimulated growth and aflotoxin production by A. flavus on cracked maize, especially at 25/sup 0/C and 0.95 and 0.98 a/sub w/. No aflatoxin was detected in pure cultures of A. flavus on cracked rice after 12 days of incubation at 25/sup 0/C, but some was produced by mixed cultures at 16/sup 0/C and 0.98 a/sub w/. The morphological interactions among A. flavus, H. burtonii, and B. amyloliquefaciens were also examined on maize and rice extract agars under similar controlled conditions.

• Research Organization: Univ. of Strathclyde, Glasgow, Scotland
• OSTI ID: 6352374
• Journal Information: Appl. Environ. Microbiol.; (United States), Vol. 53:5
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
60 APPLIED LIFE SCIENCES
AFLATOXIN
SYNTHESIS
ASPERGILLUS
GROWTH
BACTERIA
SEEDS
IRRADIATION
BACILLUS
MAIZE
MORPHOLOGY
RICE
ANTIGENS
CEREALS
FUNGI
GRASS
MATERIALS
MICROORGANISMS
PLANTS
TOXIC MATERIALS
TOXINS
560140* - Radiation Effects on Plants
553003 - Agriculture & Food Technology- Pest & Disease Control- (1987-)