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Acta Scientiarum. Agronomy

Print version ISSN 1679-9275On-line version ISSN 1807-8621

Abstract

DALLEMOLE-GIARETTA, Rosangela et al. Pochonia chlamydosporia promotes the growth of tomato and lettuce plants. Acta Sci., Agron. [online]. 2015, vol.37, n.4, pp.417-423. ISSN 1679-9275.  https://doi.org/10.4025/actasciagron.v37i4.25042.

The fungus Pochonia chlamydosporia is one of the most studied biological agents used to control plant-parasitic nematodes. This study found that the isolates Pc-3, Pc-10 and Pc-19 of this fungus promote the growth of tomato and lettuce seedlings. The isolate Pc-19 colonized the rhizoplane of tomato seedlings in only 15 days and produced a large quantity of chlamydospores. This isolate was able to use cellulose as a carbon source, in addition to glucose and sucrose. Scanning electron microscopy (SEM) revealed that hyphae of the P. chlamydosporia isolate Pc-10 penetrated the epidermal cells of the tomato roots. These three P. chlamydosporia isolates promote the growth of tomato and lettuce.

Keywords : Lactuca sativa; nematophagous fungus; rhizosphere colonization; Solanum lycopersicum; Verticillium chlamydosporium.

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