By Hisashi Miyagawa, Masakazu Okada (auth.), Rajeev K. Upadhyay (eds.)
Microbial pollution are secondary metabolites that acquire within the organism and, to a wide quantity, are metabolically inactive in the direction of the organism that produces them. the invention of penicillin, a secondary metabolite of Penicillium notatum West (= P. chrysogenum Thom), in 1929 marked a milestone within the improvement of antibiotics (microbial toxins). within the in depth stories that this discovery, scientists chemically characterised numerous new molecules (toxins) from secondary metabolites of microbes, a few having a distinct functionality in inflicting pathogenesis in crops. pollution also are identified to playa major position in inciting animal (human) and bug illnesses and as plant progress regulators. Many universal pollutants have additionally been remoted from diverse microbes displaying a large spectrum of organic job. pollution are largely divisible into a number of attribute groupings - polyketides, oxygen heterocyclic compounds, pyrons, terpenoidS, amino acids - diketopiperazines, polypeptides and so forth. fresh examine has indicated that those pollution play an incredible position in plant pathogenesis, illness epidemics, plant breeding, organic keep watch over of plant pathogens and bug pests, precipitated resistance, plant-pathogen interactions and so forth. pollution produced through weed pathogens are exploited as lead molecules in constructing environmentally pleasant herbicides.
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Additional info for Advances in Microbial Toxin Research and Its Biotechnological Exploitation
1997) noted that DONproducer caused more severe symptoms of infection than the mutant. , 1997). Toxins are only one of the factors of the virulence. The interest in trichothecene toxins in the past has been due to their being an important component of damage associated with grain toxicity for a man and farm animals. Besides, the mycotoxins are the convenient scorer for the investigation ofexternal conditions influencing intraspecific diversity in fimgus. Therefore, they attract particular attention.
70125, Bari, Italy; 1 Dipartimento di Scienze degli Alimenti, Universita' di Napoli "Federico II", 80055, Portici (NA), Italy; and 2 Dept. ofClinical Immunology and Allergology, University of Bari, 70124 Bari, Italy 1. INTRODUCTION Mycotoxin contamination of cereal crops is of a worldwide concern since about 35% of cereal crop products contain measurable amount ofmycotoxins. Beauvericin is one toxic metabolite recently reported as product of some important phytopathogenic Fusarium species. We have described in this multidisciplinary and collaborative report the chemistry, the biological toxicity, the natural occurrence as contaminant of cereals and the main Fusarium species involved in their production.
1991). Another work showed that also the murine J774 cell line (macrophage-like) was sensitive to beauvericin, which induced decrease in viability in cultures exposed for 24 h, with a CCSO of approx. , 1992). , 1995) led to consider the possibility that the toxic cyclodepsipetide may enter the food chain and bear yet unexplored consequences on the health of domestic animals and humans alike. These concerns, further strengthened by recognition ofa possible role for beauvericin in contamination of wheat, rice and other important commodities, led to focus on cytotoxicity to mammalian cells with renewed interest.