Abstract
Pachira glabra (Malvaceae) occurs naturally in Brazil’s Atlantic Forest and is used to recover degraded areas of permanent preservation. Symptoms of leaf spot caused by Diaporthe spp. have been observed in P. glabra saplings in a Brazilian forest nursery. The aim of this study was to identify the fungal species employing morphological characteristics, pathogenicity tests, and DNA sequence comparisons for the internal transcribed spacer region (ITS), β-tubulin (TUB), translation elongation factor 1-α (TEF1), and calmodulin (CAL) gene regions. A novel species was identified and described, named here as Diaporthe pachirae. Furthermore, this is the first report of a species belonging to Diaporthe on P. glabra in Brazil. The current study revealed that documentation of new fungi is a relevant forerunner to any research with natural forests.
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