Trichoderma species -: Opportunistic, avirulent plant symbionts

被引:2190
作者
Harman, GE [1 ]
Howell, CR
Viterbo, A
Chet, I
Lorito, M
机构
[1] Cornell Univ, Dept Hort Sci & Plant Pathol, Geneva, NY 14456 USA
[2] ARS, USDA, SPARC, College Stn, TX 77845 USA
[3] Weizmann Inst Sci, IL-76100 Rehovot, Israel
[4] Univ Naples Federico II, Dipartimento Arboricoltura Bot & Patol Vegetale, I-10080055 Portici, Italy
[5] Ist CNR IPP, I-10080055 Portici, Italy
关键词
D O I
10.1038/nrmicro797
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
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.
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页码:43 / 56
页数:14
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