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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Endophytic and pathogenic Phyllosticta species, with reference to those associated with Citrus Black spot
Persoonia: Molecular Phylogeny and Evolution of Fungi, Volume 26, Year 2011
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Description
We investigated the identity and genetic diversity of more than 100 isolates belonging to Phyllosticta (teleomorph Guignardia), with particular emphasis on Phyllosticta citricarpa and Guignardia mangiferae s.l. occurring on Citrus. Phyllosticta citricarpa is the causal agent of Citrus Black Spot and is subject to phytosanitary legislation in the EU. This species is frequently confused with a taxon generally referred to as G. mangiferae, the presumed teleomorph of P. capitalensis, which is a non-pathogenic endophyte, commonly isolated from citrus leaves and fruits and a wide range of other hosts. DNA sequence analysis of the nrDNA internal transcribed spacer region (ITS1, 5.8S nrDNA, ITS2) and partial translation elongation factor 1-alpha (TEF1), actin and glyceraldehyde-3-phosphate dehydrogenase (GPDH) genes resolved nine clades correlating to seven known, and two apparently undescribed species. Phyllosticta citribraziliensis is newly described as an endophytic species occurring on Citrus in Brazil. An epitype is designated for P. citricarpa from material newly collected in Australia, which is distinct from P. citriasiana, presently only known on C. maxima from Asia. Phyllosticta bifrenariae is newly described for a species causing leaf and bulb spots on Bifrenaria harrisoniae (Orchidaceae) in Brazil. It is morphologically distinct from P. capitalensis, which was originally described from Stanhopea (Orchidaceae) in Brazil; an epitype is designated here. Guignardia mangiferae, which was originally described from Mangifera indica (Anacardiaceae) in India, is distinguished from the non-pathogenic endophyte, P. brazilianiae sp. nov., which is common on M. indica in Brazil. Furthermore, a combined phylogenetic tree revealed the P. capitalensis s.l. clade to be genetically distinct from the reference isolate of G. mangiferae. Several names are available for this clade, the oldest being P. capitalensis. These results suggest that endophytic, non-pathogenic isolates occurring on a wide host range would be more correctly referred to as P. capitalensis. However, more genes need to be analysed to fully resolve the morphological variation still observed within this clade. © 2011 Nationaal Herbarium Nederland & Centraalbureau voor Schimmelcultures.
Authors & Co-Authors
Glienke, Chirlei
Brazil, Curitiba
Universidade Tecnológica Federal do Paraná
Pereira, Olinto Liparini
Brazil, Vicosa
Universidade Federal de Vicosa
Galli-Terasawa, Lygia Vitória
Brazil, Curitiba
Universidade Tecnológica Federal do Paraná
Cunnington, James Henry
Unknown Affiliation
Shivas, Roger G.
Australia, Brisbane
Agri-science Queensland
Groenewald, Johannes Zacharias Ewald
Netherlands, Utrecht
Westerdijk Fungal Biodiversity Institute - Knaw
Crous, Pedro Willem
Netherlands, Utrecht
Westerdijk Fungal Biodiversity Institute - Knaw
Netherlands, Utrecht
Universiteit Utrecht
Netherlands, Wageningen
Wageningen University & Research
Statistics
Citations: 142
Authors: 7
Affiliations: 6
Identifiers
Doi:
10.3767/003158511X569169
ISSN:
00315850
Research Areas
Cancer
Genetics And Genomics