Diversity and pathogenicity of the Ceratocystidaceae associated with cacao agroforests in Cameroon

dc.contributor.authorMbenoun, Michael
dc.contributor.authorWingfield, Michael J.
dc.contributor.authorBoyoguenoa, Begoude
dc.contributor.authorAmougou, F. Nsouga
dc.contributor.authorTigang, Petchayo
dc.contributor.authorTen Hoopen, G.M.
dc.contributor.authorMfegue, C.V.
dc.contributor.authorDibog, L.
dc.contributor.authorNyassé, S.
dc.contributor.authorWingfield, Brenda D.
dc.contributor.authorRoux, Jolanda
dc.contributor.emailjolanda.roux@fabi.up.ac.zaen_ZA
dc.date.accessioned2016-05-03T09:54:16Z
dc.date.issued2016-01
dc.description.abstractKnowledge of the diversity and ecology of plant pathogenic fungi in cacao agroforests and surrounding natural ecosystems can inform the development of sustainable management strategies for new cacao disease outbreaks. In this study, we investigated the occurrence of fungi related to the Ceratocystisdaceae and their nitidulid beetle vectors in cacao agroforests in Cameroon, under diverse agroecological conditions. The fungi and their vectors were collected from artificially induced stem wounds on cacao and associated shade trees. Collections were also made from abandoned cacao pod husks and other tree wounds within and around plantations. Fungal isolates were identified using DNA sequence-based phylogenies and morphological comparisons, and two representatives of each species were evaluated for pathogenicity on cacao. Five species of Ceratocystidaceae were recovered, including Huntiella chlamydoformis sp. nov., H. pycnanthi sp. nov. and H. moniliformis, as well as Thielaviopsis cerberus and Th. ethacetica. The incidence of these fungi appeared to be influenced by the prevailing agroecological conditions. Nitidulid beetles in the genus Brachypeplus were found to be their most common insect associates on cacao. Both Th. ethacetica and H. pycnanthi produced extensive lesions after inoculation on branches of mature cacao trees, while Th. ethacetica also caused pod rot. Although their impact remains unknown, fungi in the Ceratocystidaceae and their nitidulid beetle vectors are common and likely contribute to the parasitic pressure in Cameroonian cacao agrosystems.en_ZA
dc.description.departmentForestry and Agricultural Biotechnology Institute (FABI)en_ZA
dc.description.departmentGeneticsen_ZA
dc.description.departmentMicrobiology and Plant Pathologyen_ZA
dc.description.embargo2017-01-31
dc.description.librarianhb2016en_ZA
dc.description.sponsorshipNRF-DST Centre of Excellence in Tree Health Biotechnology (CTHB) of South Africa and the Department of Corporate International Relations of the University of Pretoria through a postgraduate ‘study abroad grant’.en_ZA
dc.description.urihttp://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1365-3059en_ZA
dc.identifier.citationMbenoun, M, Wingfield, MJ, Boyogueno, ADB, Amougou, FN, Tigang, SP, Ten Hoopen, GM, Mfegue, CV, Dibog, L, Nyasse, S, Wingfield, BD & Roux, J 2016, 'Diversity and pathogenicity of the Ceratocystidaceae associated with cacao agroforests in Cameroon', Plant Pathology, vol. 65, no. 1, pp. 64-78.en_ZA
dc.identifier.issn0032-0862 (print)
dc.identifier.issn1365-3059 (online)
dc.identifier.other10.1111/ppa.12400
dc.identifier.urihttp://hdl.handle.net/2263/52228
dc.language.isoenen_ZA
dc.publisherWileyen_ZA
dc.rights© 2016 British Society for Plant Pathology. This is the pre-peer reviewed version of the following article : Diversity and pathogenicity of the Ceratocystidaceae associated with cacao agroforests in Cameroon, Plant Pathology, vol. 65, no.1, pp. 64-78, 2016. doi : 10.1111/ppa.12400. The definite version is available at : http://onlinelibrary.wiley.comjournal/10.1111/(ISSN)1365-3059.en_ZA
dc.subjectCeratocystisen_ZA
dc.subjectCrop protectionen_ZA
dc.subjectEmerging diseasesen_ZA
dc.subjectFungal pathogensen_ZA
dc.subjectNitidulid beetlesen_ZA
dc.titleDiversity and pathogenicity of the Ceratocystidaceae associated with cacao agroforests in Cameroonen_ZA
dc.typePostprint Articleen_ZA

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