Co-Authors:
Barkai-Golan, R., Department of Postharvest Science of Fresh Produce, The Volcani Center, Agricultural Research Organization, Bet Dagan 50250, Israel
Abstract:
Alternaria toxigenicity in fruits varies not only with the fungal species or strain, but also with the host fruit species or cultivar and with the conditions under which the toxin is synthesized. Alternaria species are among the most common postharvest pathogens of fruits and vegetables. During pathogenesis several species are capable of producing several mycotoxins that elicit adverse effects in humans and animals. These mycotoxins include tenuazonic acid, alternariol, alternariol methyl ether, altenuen, and altertoxins. Although A. alternata is regarded as the major mycotoxin-producing species, other species such as A. citri, A. solani, A. longipes, and the A. tenuissima, A. arborescens, and A. infectoria species-groups also produce the characteristic Alternaria mycotoxins. Alternaria mycotoxins transferred from a rotten part of the fruit into the surrounding sound tissue result in the presence of mycotoxins in fruit tissue, even in the absence of fungal mycelium. Alternaria species naturally contaminate the aerial parts of plants, and are easily isolated from decaying matter. © 2008 Elsevier Inc. All rights reserved.
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