Novel species of Cercospora and Pseudocercospora (Capnodiales, Mycosphaerellaceae) from Australia

Abstract

MycologyPhylogeny Systematics Taxonomy a b s t r a c t Novel species of Cercospora and Pseudocercospora are described from Australian native plant species. These taxa are Cercospora ischaemi sp. nov. on Ischaemum australe (Poaceae); Pseudocercospora airliensis sp. nov. on Polyalthia nitidissima (Annonaceae); Pseudocercospora proiphydis sp. nov. on Proiphys amboinensis (Amaryllidaceae); and Pseudocercospora jagerae sp. nov. on Jagera pseudorhus var. pseudorhus (Sapindaceae). These species were characterised by morphology and an analysis of partial nucleotide sequence data for the three gene loci, ITS, LSU and EF-1a. Recent divergence of closely related Australian species of Pseudocercospora on native plants is proposed.Crown

Identification and Characterization ofPseudocercosporaSpecies Causing Grapevine Leaf Spot in China

“…For molecular studies, isolations of the species concerned and cultures are essential (Shivas et al. ). Correct species identification of plant pathogenic genera is essential to have effective control measures (Rossman and Palm‐Hernández ; Nilsson et al.…”

“…Future taxonomic studies on Pseudocercospora should be based on host association, morphology and sequence data . For molecular studies, isolations of the species concerned and cultures are essential (Shivas et al 2014). Correct species identification of plant pathogenic genera is essential to have effective control measures (Rossman and Palm-Hern andez 2008;Nilsson et al 2014).…”

“…() were represented by 48 species in the LSU analysis, including the four newly described species by Shivas et al. (). dnastar V.5.1 and seqman V.5.00 were used to obtain consensus sequences from sequences generated from forward and reverse primers.…”

“…The systemic placement of taxa in this paper is based on the phylogeny of LSU region ) and the combine analysis of ITS and ACT gene data. The 14 clades recovered by Crous et al (2013) were represented by 48 species in the LSU analysis, including the four newly described species by Shivas et al (2014). DNASTAR V.5.1 and SEQMAN V.5.00 were used to obtain consensus sequences from sequences generated from forward and reverse primers.…”

“…Phylogenetic trees were constructed using sequences of our 12 isolates with those that originated from Crous et al (2013) and Shivas et al (2014) ( Table 1). The tree topologies recovered by ML (Fig.…”