Occurrence of fusaproliferin and beauvericin in Fusarium-contaminated livestock feed in Iowa

Article Abstract:

A study was conducted to analyze Fusarium fungal contaminants and related mycotoxins in maize feed livestock samples. Single-conidium isolates were cultured in autoclaved yellow maize kernels adjusted to about 45% moisture in Erlenmeyer flasks. High performance liquid chromatography was then carried out to dt amounts of beauvericin and fusaproliferin in the feed samples. Results indicated the natural occurrence of fusaproliferin outside Italy and of the natural occurrence of beauvericin in North America.

Livestock, Feed research

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Fusaproliferin production by Fusarium subglutinans and its toxicity to Artemia salina, SF-9 Insect cells, and IARC/LCL 171 human B lymphocytes

Article Abstract:

Fusarium subglutinans produces a sesterterpene, fusaproliferin, which is cytotoxic to lepidopteran Spodoptera frugiperda SF-9 cells, Artemia salina and IARC/LCL 171 cells in human B lymphocytes. The amount of fusaproliferin ranges from 30 to 1500 micrograms/gram of dried ground substrate, with 33 of the 67 Fusarium subglutinans strains producing more than 500 micrograms/gram. Experiments on cells exposed to seeding show that there may be a cytotoxic effect at subtoxic concentrations.

Physiological aspects, B cells, Microbial toxins, Artemia, Brine shrimps, Lepidoptera

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Species diversity of and toxin production by Gibberella fujikuroi species complex strains isolated from native prairie grasses in Kansas

Article Abstract:

Species diversity and toxin production displayed by Gibberella fujikurou species complex strains that were isolated from native prairie grasses in Kansas were studied. The Fusarium community contains some species that are probably undescribed and could probably be important and useful in the field of agricultural research.

Science & research, Kansas, Bacterial toxins, Gibberellins

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