INVESTIGADORES
CHULZE Sofia Noemi
artículos
Título:
Impact of cycling temperatures on Fusarium verticillioides and Fusarium graminearum growth and mycotoxins production in soybean
Autor/es:
GARCIA D.; BARROS G.G.; CHULZE , S.N; RAMOS, A; SANCHIS, V; MARIN, S
Revista:
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
Editorial:
JOHN WILEY & SONS LTD
Referencias:
Lugar: LOndres; Año: 2012
ISSN:
0022-5142
Resumen:
BACKGROUND: Fusarium graminearum and F. verticillioides are two very important mycotoxigenic species as they cause diversediseases in crops. The effects of constant and cycling temperatures on growth and mycotoxin production of these species were studied on soybean basedmedium and on irradiated soya beans.RESULTS: F. graminearum grew better when was incubated at 15, 20 and 15?20 ◦C (isothermal or cycling temperature) during21 days of incubation. Maximum levels of zearalenone and deoxynivalenol (39.25 and 1040.4 ìg g−1, respectively) were detected on soya beans after 15 days of incubation and the optimal temperature for mycotoxin production was 15 ◦C for zearalenone and 20 ◦C for deoxynivalenol. F. verticillioides grew better at 25 ◦C in culture medium and at 15?20 ◦C, 15?25 ◦C o n soybean seeds. Fumonisin B1 was produced only in culture medium, and the maximum level (7.38 ìg g−1) was found at 15 ◦C after 7 days of incubation. CONCLUSION: When growth and mycotoxin production under cycling temperatures were predicted from the results under constant conditions, observed values were different from calculated for both species and substrate medium. Therefore, care should be taken if data at constant temperature conditions are to be extrapolated to real field conditions CONCLUSION: When growth and mycotoxin production under cycling temperatures were predicted from the results under constant conditions, observed values were different from calculated for both species and substrate medium. Therefore, care should be taken if data at constant temperature conditions are to be extrapolated to real field conditions Fusarium graminearum and F. verticillioides are two very important mycotoxigenic species as they cause diversediseases in crops. The effects of constant and cycling temperatures on growth and mycotoxin production of these species were studied on soybean basedmedium and on irradiated soya beans.RESULTS: F. graminearum grew better when was incubated at 15, 20 and 15?20 ◦C (isothermal or cycling temperature) during21 days of incubation. Maximum levels of zearalenone and deoxynivalenol (39.25 and 1040.4 ìg g−1, respectively) were detected on soya beans after 15 days of incubation and the optimal temperature for mycotoxin production was 15 ◦C for zearalenone and 20 ◦C for deoxynivalenol. F. verticillioides grew better at 25 ◦C in culture medium and at 15?20 ◦C, 15?25 ◦C o n soybean seeds. Fumonisin B1 was produced only in culture medium, and the maximum level (7.38 ìg g−1) was found at 15 ◦C after 7 days of incubation. CONCLUSION: When growth and mycotoxin production under cycling temperatures were predicted from the results under constant conditions, observed values were different from calculated for both species and substrate medium. Therefore, care should be taken if data at constant temperature conditions are to be extrapolated to real field conditions