Nadson de Carvalho Pontes

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Lasiodiplodia theobromae was found causing stem rot on commercial production of Begonia x elatior in São Paulo, Brazil. Illustrations, morphological and molecular description are provided. Based on the morphology, this fungus was recognized as L. theobromae. However, L. theobromae has high similarity with other Lasiodiplodia species, some of which are not(More)
Plants of Nicandra physaloides, Solanum americanum and Euphorbia heterophylla with leaf lesions have been found naturally grown among tomato plants in commercial fields in Brazil. Tomato bacterial spot was occurring in these fields. Xanthomonad-like isolates were obtained from affected weed leaf samples. These isolates were species identified using BOX-PCR(More)
This study analyses two methods for establishing bacterial spot xanthomonad infection on processing tomatoes and three assessment methods to measure bacterial spot severity. These methods were evaluated at different crop stages under field conditions. The trials were conducted in 2010 and 2011. Three cultivars with known resistance to bacterial spot were(More)
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