International Commission for the Taxonomy of Fungi (ICTF)
International Union of Microbiological Societies (IUMS, Mycology Division)
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Posted on 2004-10-25, sourse: PMID: 15035008

Trichoderma species--opportunistic, avirulent plant symbionts. Harman GE, Howell CR, Viterbo A, Chet I, Lorito M.

Nat Rev Microbiol. 2004 Jan;2(1):43-56.

Trichoderma species--opportunistic, avirulent plant symbionts.

Harman GE, Howell CR, Viterbo A, Chet I, Lorito M.

Departments of Horticultural Sciences and Plant Pathology, Cornell University, Geneva, New York 14456, USA. geh3@cornell.edu

Abstract

Trichoderma spp. are free-living fungi that are common in soil and root ecosystems. Recent discoveries show that they are opportunistic, avirulent plant symbionts, as well as being parasites of other fungi. At least some strains establish robust and long-lasting colonizations of root surfaces and penetrate into the epidermis and a few cells below this level. They produce or release a variety of compounds that induce localized or systemic resistance responses, and this explains their lack of pathogenicity to plants. These root-microorganism associations cause substantial changes to the plant proteome and metabolism. Plants are protected from numerous classes of plant pathogen by responses that are similar to systemic acquired resistance and rhizobacteria-induced systemic resistance. Root colonization by Trichoderma spp. also frequently enhances root growth and development, crop productivity, resistance to abiotic stresses and the uptake and use of nutrients.

Copyright: Irina Druzhinina & Alexey Kopchinskiy 2004 - 2008