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Phyllosticta species on orchids (Orchidaceae), introducing Phyllosticta speewahensis sp. nov. (Phyllostictaceae, Ascomycota) from northern Australia

Shivas, R. G. and Tan, YuPei and Grice, K. R. E. (2013) Phyllosticta species on orchids (Orchidaceae), introducing Phyllosticta speewahensis sp. nov. (Phyllostictaceae, Ascomycota) from northern Australia. Sydowia, 65 (1). pp. 139-146.

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Article Link(s): http://www.sydowia.at/index.htm

Abstract

Several species of Phyllosticta (syn. Guignardia) have been described from orchids worldwide. A new species, Phyllosticta speewahensis, is proposed for a specimen isolated from leaf spots on a hybrid Vanda orchid in northern Queensland, Australia. Phylogenetic analysis of the nrDNA internal transcribed spacer region (ITS) and partial translation elongation factor 1-alpha (TEF1) gene sequences showed that P. speewahensis is most closely related to P. hostae. The likelihood that orchids harbour further cryptic species of endophytic and pathogenic Phyllosticta species is discussed.

Item Type:Article
Business groups:Biosecurity Queensland
Additional Information:Author Affiliation: Plant Pathology Herbarium, Ecosciences Precinct, GPO Box 267, Brisbane, Qld 4001, Australia. Author Email: roger.shivas@daff.qld.gov.au
Keywords: cryptic species, Phyllosticta, molecular phylogeny, taxonomy, Orchidaceae.
Subjects:Plant culture > Flowers and flower culture. Ornamental plants
Plant pests and diseases
Science > Biology
Deposited On:24 Sep 2014 05:36
Last Modified:24 Sep 2014 05:36

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