PATHOGENE AND SAPROFITIC FUNGUS PRESENT IN THE MAIZE KERNELS SPERMOSPHERE, AS POTENTIAL PRODUCER OF MYCOTOXICOSIS ON MAN AND DOMESTIC ANIMALS PUBLISHED

A. BORCEAN, Simona NIŢĂ, L. MOLNAR
Storing maize as cobs or directly as seed is one of the most important technological phases,both for agriculture and animal husbandry and food industry. Many of fungi and bacteria can be foundon seeds when they are placed in silos but mostly in farmer’s family granary, where the storage can beunder the optimal technical level of control and ventilation could have as result a temperature andhumidity increase in seed mass. This may lead to compromise of that stored seeds amount. On the otherhand it should be noted that the microorganisms which can cause potential problems are placed instorage warehouses together with seeds because those seeds contain on the seminal skin or seeds insidethose pathogens. Infections in this case have as point of origin directly from the field pathogensdissemination, or from indirect infections produced by transport or even handling the mass of seedsbefore storing. Maize biggest trouble can be caused by fungi of the genera Fusarium, Nigrospora,Aspergillus, Penicillium, and also Ustilagozeae. Even in small amounts some of these fungi spores whenare placed in the good conditions of temperature and humidity for infection, will lead to the developmentof "molds" that emit dangerous mycotoxins such as aflatoxins, deoxynivalenol (DON or vomitoxin),fumonisin, trichothecenes, ohratoxins, citrinin, cyclopianozic acid, and sterigmatocystin. Or if the seedsare used to make concentrate forage for animal husbandry and this forage are kept in poor conditions,toxicosis caused by this fungi toxins are unavoidable and even products made from these animals are alsotoxic. In present paper we propose to show results of our research concerning the amount of potentiallytoxigenic fungi species in seed parties harvested in 2012, from several wheat varieties. Working methodwe used to determine the spores of these pathogens was extended Wageningen method with method of E.Rădulecu and A. Negru. Results clearly indicates the presence on the seeds coat of fungal spores fromgenera Aspergillus, Fusarium and Alternaria together f with Ustilagozeae which can cause trouble whenusing these seed farmers.
corn seeds, pathogens spores, Alternaria sp., Fusariumroseum, Ustilagozeae.
Presentation: oral

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