+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Morphological characteristics and physiological properties of aflatoxin B1 producing and non-producing Aspergillus flavus strains



Morphological characteristics and physiological properties of aflatoxin B1 producing and non-producing Aspergillus flavus strains



Mycopathologia 91(3): 181-186



Comparison between about 80 strains of Aspergillus flavus, belonging to the series flavus and oryzae, obtained from international collections but also isolated from French or African substrates revealed the following observations: 1. Cultural and morphological characteristics of toxicogenic and atoxicogenic strains of A. flavus are similar. However, the former produce a diffusible yellow pigment in 83% of isolates. 2. The two groups of conidiospores have the same resistance to UV irradiation (254 nm, 5 and 10 min). All the strains are equally sensitive to 4 antifungal antibiotics: nystatine, ketoconazole, clotrimazole and amphotericine. 3. A difference was seen in the capacity to produce enzymes as alpha-galactosidase, beta-galactosidase and beta-glucosidase, implicated in the glucid metabolism. The specific hydrolytic activity has been confirmed by the characterization of a large amount of beta-galactosidase and by a diauxic growth on glucose medium supplemented by lactose. Possible relationship between these characters and aflatoxin B1 production by A. flavus strains is discussed.

Please choose payment method:






(PDF emailed within 1 workday: $29.90)

Accession: 040738463

Download citation: RISBibTeXText

PMID: 3932861


Related references

Use of aflatoxin-producing ability medium to distinguish aflatoxin-producing strains of Aspergillus flavus. Applied and Environmental Microbiology 41(3): 697-699, 1981

Electrophoretic comparisons of mycelial enzymes from aflatoxin-producing and non-producing strains of Aspergillus flavus and Aspergillus parasiticus. Canadian Journal of Microbiology 23(1): 60-67, 1977

Studies on the mycological characteristics of aflatoxin-producing strains belonging to the A. flavus group. I. A new medium and method for detecting aflatoxin-producing abilities of strains. Report of the Research Institute of Brewing, Tokyo (145): 1-7, 1973

Differentiation of aflatoxin-producing and non-producing strains of Aspergillus flavus group. Letters in Applied Microbiology 33(4): 291-295, 2001

Phosphatases in aflatoxin-producing and non-producing strains of Aspergillus flavus Link. Current Science 93(10): 1362-1363, 2007

Comparative studies on growth patterns and metabolic status of aflatoxin-producing and non-producing strains of Aspergillus flavus. Current Science 82(12): 1425-1426, 2002

Morphological and enzymatic differences between Aspergillus flavus strains producing and not producing aflatoxins. Anales de Biologia 1(Special Section 1): 109-114, 1984

Detection of transcripts of the aflatoxin genes aflD, aflO, and aflP by reverse transcription-polymerase chain reaction allows differentiation of aflatoxin-producing and non-producing isolates of Aspergillus flavus and Aspergillus parasiticus. International Journal of Food Microbiology 98(2): 201-210, 2005

Studies on the mycological characters of aflatoxin-producing strains belonging to the A. flavus group. II. Isolation of aflatoxin-producing strains from corn field in USA. Reports of the the Research Institute of Brewing, Tokyo (145): 8-12, 1973

Aflatoxin-producing strains of Aspergillus flavus from spices. Industrie Alimentari 34(342): 1147-1151, 1995

Aflatoxin-Producing Strains of Aspergillus flavus in Yogurt. Journal of Food Protection 52(11): 823-824, 1989

Ecology of aflatoxin B1-producing Aspergillus flavus strains. Zeitschrift für die Gesamte Hygiene und ihre Grenzgebiete 29(9): 515-517, 1983

The ecology of aflatoxin B1 producing Aspergillus flavus strains. Zeitschrift fur die Gesamte Hygiene und ihre Grenzgebiete 29(9): 515-517, 1983

Aflatoxin-producing strains of Aspergillus flavus isolated from cheese. Journal of Food Protection 60(2): 192-194, 1997

Susceptibility of aflatoxin-producing strains of aspergillus flavus to a range of fungicides. Canadian Journal of Plant Science 48(4): 377-379, 1968