Abstract
Three Pestalotiopsis isolates were obtained from leaves of Coffea arabica and Rhodomyrtus tomentosa. Among them, two isolates produced versicolorous conidia, and the other produced concolorous conidia. Phylogenetic analysis based on a combination of ITS, β-tubulin and tef1 gene sequence data clearly confirms that they belong to two species and distinguishes them from other species in this genus, with ex-type sequence data in GenBank. On the basis of evidence from morphology and molecular phylogeny they are described as new species, Pestalotiopsis coffeae-arabicae sp. nov. and P. rhodomyrtus sp. nov.
Highlights
Species in the genus Pestalotiopsis have received much attention in recent years, because of their role as plant pathogens, and as common endophytes, which have been shown to produce a wide range of chemically novel metabolites (Xu et al 2010, Debbab et al 2011, 2012, Maharachchikumbura et al 2011, 2013)
The colonies were transferred to 2% potato-dextrose agar (PDA) medium and incubated at room temperature (25°C)
The alignment file resulted in a data set comprising 2,020 characters including gaps (ITS: 1–548, β-tubulin: 549–1,015 and tef1: 1,016–2,020)
Summary
Species in the genus Pestalotiopsis have received much attention in recent years, because of their role as plant pathogens, and as common endophytes, which have been shown to produce a wide range of chemically novel metabolites (Xu et al 2010, Debbab et al 2011, 2012, Maharachchikumbura et al 2011, 2013). We surveyed the Pestalotiopsis diversity in southern China. Among them were two undescribed species, described below, which were isolated from Coffea arabica and Rhodomyrtus tomentosa leaves. Morphological details are provided and a comparison made with related species. Molecular characteristics based on the DNA sequences of three gene loci (ITS, β-tubulin and tef1) were determined
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