Biocontrol Efficacy Among Strains of Pochonia chlamydosporia Obtained from a Root-Knot Nematode Suppressive Soil.

作者: Jiue-in Yang , Angelo Loffredo , James Borneman , J. Ole Becker

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摘要: Three Pochonia chlamydosporia var. strains were isolated from a Meloidogyne incognita-suppressive soil, and then genetically characterized with multiple Pochonia-selective typing methods based on analysis of s-tubulin, rRNA internal transcribed spacer (ITS), small subunit (SSU), enterobacterial repetitive intergenic consensus (ERIC) PCR. All exhibited different patterns the ERIC analysis. Strains 1 4 similar PCR s-tubulin ITS. The strains' potential as biological control agents against root-knot nematodes examined in greenhouse trials. three P. significantly reduced numbers nematode egg masses. When chlamydospores used inoculum, strain tomato roots by almost 50%, showed effects J2 nematode-caused root-galling. A newly developed SSU-based differentiated others, could therefore potentially be screening tool for identifying other effective biocontrol chlamydosporia.

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