Neopestalotiopsis Species Associated with Flower Diseases of Macadamia integrifolia in Australia

Macadamia (Macadamia integrifolia) is native to eastern Australia and produces an edible nut that is extensively cultivated in commercial orchards in several countries. Little is known about the diversity of fungi associated with diseases of macadamia inflorescences. A survey of fungi associated with the dry flower disease of macadamia detected several isolates of Neopestalotiopsis (Pestalotiopsidaceae, Sordariomycetes). Five new species of Neopestalotiopsis were identified based on molecular phylogenetic analyses of concatenated gene sequences of the internal transcribed spacer (ITS), beta-tubulin (TUB), and the translation elongation factor 1-alpha (TEF1 alpha). The new species are named Neopestalotiopsis drenthii, N. maddoxii, N. olumideae, N. vheenae, and N. zakeelii, and are described by molecular, morphological, and cultural characteristics. The ecology of the isolates and their pathogenic, saprophytic, or commensal ability were not determined.

Automated summary

Macadamia, native to eastern Australia, produces edible nuts and is cultivated in commercial orchards in several countries. A survey on fungi associated with dry flower disease of macadamia identified five new species of Neopestalotiopsis, but little is known about the ecology and pathogenicity of these isolates.