Identification of the causal agent of vanilla basal stem rot in crops under greenhouse shed conditions from Colombia
DOI:
https://doi.org/10.33885/sf.2012.3.1096Keywords:
Vanilla planifolia, Fusarium oxysporum, molecular Identification, morphological identification, sequencingAbstract
Due to its high added value, vanilla (Vanilla planifolia) is a promising crop for the
colombian agroindustry. Unfortunately, there is very little knowledge on the agronomical and
phytosanitary management of this plant. One of the main issues concerning this crop is the basal
stem rot. The objective of this work was to determine the causal agent of this disease in vanilla
plantations under greenhouse shed conditions in western Antioquia. A total of 20 fungal isolates
were obtained from infected stems and five of them were used in pathogenicity tests. Our results
suggest that Fusarium oxysporum f. sp. vanillae is the causal agent of basal stem rot in Colombia.
Phoma sp., Lasiodiplodia sp. and Bionectria sp. were also identified as associated to vanilla
crops; future work should address their involvement in disease. This work will serve as the basis of
plant disease management programs aimed at increasing the cultivated area of this orchid in
Colombia.
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