The primary goal of the CTHB is to promote the health of trees native to South Africa through the use of biotechnology. To accomplish this, CTHB projects typically consider the pathogens and pests that are associated with native trees and woody hosts. The CTHB also explores the possible effects that factors such as climate change, society, natural forest health and plant genetics may have on the health of native woody resources and ecosystems.

The CTHB is hosted by the Forestry and Agricultural Biotechnology Institute (FABI) at the University of Pretoria. Within FABI it is intimately linked to the Tree Protection Cooperative Programme (TPCP), a research programme that has a track record of more than two decades in dealing with the pests and diseases of commercially important forestry species.

The CTHB is structured as a virtual Centre of Excellence that conducts scientific research via a collaborative network, with the node of the network represented by researchers at UP. In addition to the UP group, this network involves researchers and their postgraduate students from other Higher Education Institutions in South Africa. These institutions include the Agricultural Research Council, University of Stellenbosch, University of Cape Town, University of the Witwatersrand, University of the Free State and Rhodes University.

New Publications

Visagie CM, Yilmaz N, Vanderwolf K, Renaud JB, Sumarah MW, Houbraken J, Assebgui R, Seifert KA, Malloch D. (2020) Penicillium diversity in Canadian bat caves, including a new species, P. speluncae. Fungal Systematics and Evolution 5:1-15. 10.3114/fuse.2020.05.01
Yin M, Wingfield MJ, Zhou X, Linnakoski R, de Beer ZW. (2019) Taxonomy and phylogeny of the Leptographium olivaceum complex (Ophiostomatales, Ascomycota), including descriptions of six new species from China and Europe. MycoKeys 60:93-123. 10.3897/mycokeys.60.39069
Allison JD, Bernard Slippers, Marc Bouwer, Hurley BP. (2019) Simulated leks increase the capture of female Sirex noctilio in the absence of host volatiles. International Journal of Pest Management 10.1080/09670874.2019.1695074
Granados GM, McTaggart AR, Rodas CA, Roux J, Wingfield MJ. (2019) Species of Cryphonectriaceae occupy an endophytic niche in the Melastomataceae and are putative latent pathogens of Eucalyptus. European Journal of Plant Pathology 10.1007/s10658-019-01887-9
Hirsch H, Wingfield MJ, van Wilgen B, Ruwanza S, Klein H, Keet JH, Jones W, Hurley BP, Harding G, Geldenhuys CJ, Geerts S, Cheek M, Canavan S, Allsopp MH, Richardson DM. (2019) Eucalyptus camaldulensis in South Africa - past, present, future. Transactions of the Royal Society of South Africa 10.1080/0035919X.2019.1669732
Haavik LJ, Slippers B, Hurley BP, Dodds KJ, Scarr T, Turgeon JJ, Allison JD. (2019) Influence of the community of associates on Sirex noctilio brood production is contextual. Ecological Entomology 10.1111/een.12810
Katumanyane A, Malan AP, Tiedt LR, Hurley BP. (2019) Steinernema bertusi n. sp. (Rhabditida: Steinernematidae), a new entomopathogenic nematode from South Africa. Nematology 10.1163/15685411-00003309
Magadlela A, Morcillo RFL, Kleinert A, Venter M, Steenkamp E, Valentine A. (2019) Glutamate dehydrogenase is essential in the acclimation of Virgilia divaricata, a legume indigenous to the nutrient-poor Mediterranean-type ecosystems of the Cape Fynbose. Journal of Plant Physiology 243 10.1016/j.jplph.2019.153053. PDF
Bose T, Roux J, Burgess TI, Shaw C, Wingfield MJ. (2019) Susceptibility of Eucalyptus grandis and Acacia mearnsii seedlings to five Phytophthora species common in South African plantations. Forest Pathology :e12560. 10.1111/efp.12560
Messal M, Slippers B, Naidoo S, Bezuidt O, Kemler M. (2019) Active fungal communities in asymptomatic Eucalyptus grandis stems differ between a susceptible and resistant clone. Microorganisms 7(10):375. 10.3390/microorganisms7100375
Aylward J, Havenga M, Dreyer LL, Roets F, Wingfield BD, Wingfield MJ. (2019) Genomic characterization of mating type loci and mating type distribution in two apparently asexual plantation tree pathogens. . Plant Pathology 10.1111/ppa.13094 PDF
Wingfield BD, van Heerden CJ, van der Nest MA, Steenkamp ET, Roets F, Geiser DM, Duong TA, Dreyer LL, Coetzee MPA, Barnes I, Aylward J, Bushula-Njah VS, Simpson MC, Fourie A, Wingfield MJ. (2019) Draft genome sequences of Fusarium xylarioides, Teratosphaeria gauchensis and T. zuluensis and genome annotation for Ceratocystis fimbriata.. IMA Fungus 10(13) 10.1186/s43008-019-0013-7 PDF
Visser EA, Wegrzyn JL, Steenkamp ET, Myburg AA, Naidoo S. (2019) Dual RNA-Seq Analysis of the Pine-Fusarium circinatum Interaction in Resistant (Pinus tecunumanii) and Susceptible (Pinus patula) Hosts. Microorganisms 7:315. 10.3390/microorganisms7090315 PDF
Tchotet Tchoumi JM, Coetzee MPA, Rajchenberg M, Roux J. (2019) Taxonomy and species diversity of Ganoderma species in the Garden Route National Park of South Africa inferred from morphology and multilocus phylogenies. Mycologia 10.1080/00275514.2019.1635387
van Wyk S, Harrison CH, Wingfield BD, De Vos L, van der Merwe NA, Steenkamp ET. (2019) The RIPper, a web-based tool for genome-wide quantification of Repeat-Induced Point (RIP) mutations. PeerJ 7:e7447. 10.7717/peerj.7447 PDF
Schröder ML, Slippers B, Wingfield MJ, Hurley BP. (2019) Invasion history and management of Eucalyptus snout beetles in the Gonipterus scutellatus species complex. Journal of Pest Science 10.1007/s10340-019-01156-y PDF
Vainio EJ, Bezos D, Braganca H, Cleary M, Fourie G, Georgieva M, Ghelardini L, Hunnunen S, Ioos R, Martin-Garcia J, Martinez-Alvarez P, Mullet M, Oszako T, Papazova-Anakieve I, Piskur B, Romeralo C, Sanz-Ros A, Steenkamp ET, Tubby K, Wingfield MJ, Diez JJ. (2019) Sampling and detection strategies for the Pine Pitch Canker (PPC) disease pathogen Fusarium circinatum in Europe. Forests 10(723):1-28. 10.3390/f10090723 PDF
Bophela KN, Venter SN, Wingfield MJ, Duran A, Tarigan M, Coutinho TA. (2019) Xanthomonas perforans: A tomato and pepper pathogen associated with bacterial blight and dieback of Eucalyptus pellita seedlings in Indonesia. . Australasian Plant Pathology 10.1007/s13313-019-00657-9 PDF
Wang QC, Chen SF. (2019) Calonectria pentaseptata causes severe leaf disease on cultivated Eucalyptus in Leizhou Peninsula of southern China. Plant Disease 10.1094/PDIS-05-19-1009-RE PDF
Crous PW, Wingfield MJ, Cheewangkoon R, Carnegie AJ, Burgess T, Sumerell BA, Edwards J, Taylor PWJ, Groenewald JZ. (2019) Foliar pathogens of Eucalyptus.. Studies in Mycology 94:125-298. 10.1016/j.simyco.2019.08.001 PDF
Postma A, Mlonyeni OX, Clasen F, Joubert F, Slippers B. (2019) The draft genome of Deladenus siricidicola. Journal of Nematology 51:e2019-36. 10.21307/jofnem-2019-036
Jami F, Marincowitz S, Slippers B, Crous PW, Le Roux JJ, Richardson DM, Wingfield MJ. (2019) Botryosphaeriaceae associated with Acacia heterophylla (La Reunion) and Acacia koa (Hawaii). Fungal Biology 10.1016/j.funbio.2019.07.001 PDF
Abate BA, Slippers B, Wingfield MJ, Conlong DE, Burger DA, Hurley BP. (2019) Virulence and survival of native entomopathogenic nematodes for the management of white grubs in South Africa. Biological Control 10.1016/j.biocontrol.2019.104043 PDF
Hoang MTV, Irinyi L, Chen SCA, Sorrell TC, TIBoMFWG, Meyer W, Arabatzis M, Arthur I, Cano-Lira JF, Cardinali G, Castañón LR, Chen W, Chindamporn A, Colombo AL, Desnos-Ollivier M, de Beer W, de Hoog S, Dromer F, Garcia-Hermoso D, Gryzenhout M, Guarro J, Halliday C, Hendrickx M, Huhndorf S, Irinyi L, Levesque CA, Meyer W, Luiza Moretti M, de Medeiros Muniz M, de Azevedo Melo AS, Satie Nishikaku A, Normand A-C, Pais C, Piarroux R, Ranque S, Robbertse B, Robert V, Schoch CL, Seifert KA, de Almeida Soares CM, Sorrell TC, Spouge JL, Stubbe D, Lucia Taylor M, Toriello C, Velegraki A, Yurayart C, Maria Zancopé-Oliveira R. (2019) Dual DNA Barcoding for the Molecular Identification of the Agents of Invasive Fungal Infections. Frontiers in Microbiology 10(1647) 10.3389/fmicb.2019.01647
van der Nest A, Wingfield MJ, Janoušek J, Barnes I. (2019) Lecanosticta acicola: A growing threat to expanding global pine forests and plantations. Molecular Plant Pathology 10.1111/mpp.12853 PDF
Estrada-de los Santos P, Palmer M, Steenkamp ET, Maluk M, Beukes C, Hirsch AM, James EK, Venter SN. (2019) Trinickia dabaoshanensis sp. nov., a new name for a lost species. Archives in Microbiology 10.1007/s00203-019-01703-2
Andjic V, Carnegie AJ, Pegg GS, Hardy GEStJ, Maxwell A, Crous PW, Perez C, Wingfield MJ, Burgess TI. (2019) 23 Years of research on Teratosphaeria leaf blight of Eucalyptus.. Forest Ecology and Management 443:19-27. 10.1016/j.foreco.2019.04.013 PDF
Queffelec J, Wooding AL, Greef JM, Garnas JR, Hurley BP, Wingfield MJ, Slippers B. (2019) Mechanisms that influence sex ratio variation in the invasive hymenopteran Sirex noctilio in South Africa. Ecology and Evolution :1-8. 10.5061/dryad.f3p8j8g PDF
Fourie A, van der Nest MA, De Vos L, Wingfield MJ, Wingfield BD, Barnes I. (2019) QTL mapping of mycelial growth and aggressiveness to distinct hosts in Ceratocystis pathogens. Fungal Genetics and Biology 131:103242. 10.1016/j.fgb.2019.103242 PDF
van der Nest A, Wingfield MJ, Ortiz PC, Barnes I. (2019) Biodiversity of Lecanosticta pine-needle blight pathogens suggests a Mesoamerican Centre of origin.. IMA Fungus 1:2 10.1186/s43008-019-0004-8 PDF
Beukes CW, Boshoff FS, Phalane FL, Hassen AI, le Roux MM, Stępkowski T, Venter SN, Steenkamp ET. (2019) Both alpha- and beta-rhizobia occupy the root nodules of Vachellia karroo in South Africa. 10.3389/fmicb.2019.01195 PDF
Ioos R, Aloi F, Piskur B, Guinet C, Mullet M, Berbegal M, Braganca H, Cacciola SO, Oskay F, Cornejo C, Adamson K, Douanla-Meli C, Kacergius A, Martinez-Alvarez P, Nowakowska JA, Luchi N, Vettraino AM, Ahumada R, Pasquali M, Fourie G, Kanetis L, Alves A, Ghelardini L, Dvorak M, Sanz-Ros A, Diez JJ, Baskarathevan J, Aguayo J. (2019) Transferability of PCR-based diagnostic protocols: An international collaborative case study assessing protocols targeting the quarantine pine pathogen Fusarium circinatum. Scientific Reports 10.1038/s41598-019-44672-8
Beukes CW, Sereme TK, Phalane FL, Mthombeni LS, Palmer M, Hassen AI, Chan WY, Avontuur J, van Zyl E, Steenkamp ET, Venter SN. (2019) Paraburkholderia strydomiana sp. nov. and Paraburkholderia steynii sp. nov.: rhizobial symbionts of the fynbos legume Hypocalyptus sophoroides. Antonie van Leeuwenhoek 10.1007/s10482-019-01269-5
Wilson AM, van der Nest MA, Wilken PM, Wingfield MJ, Wingfield BD. (2019) It’s All in the Genes: The Regulatory Pathways of Sexual Reproduction in Filamentous Ascomycetes. Genes 10(5):330. 10.3390/genes10050330 PDF
Palmer M, Venter SN, McTaggart AR, Coetzee MPA, Van Wyk S, Avontuur JR, Beukes CW, Fourie G, Santana QC, Van der Nest MA, Blom J, Steenkamp ET. (2019) The synergistic effect of concatenation in phylogenomics: the case in Pantoea. PeerJ 10.7717/peerj.6698 PDF
Wingfield BD, Millar B. (2019) How the open access model hurts academics in poorer countries. The Conversation https://bit.ly/2Gn3skG
Fell S, De Beer ZW. (2019) The impact of the Polyphagous Shot Hole Borer on Pecan trees in South Africa. SA Pecan 82:11-13. https://bit.ly/2U2Nyj6 PDF
Avontuur JR, Palmer M, Beukes CW, Chan WY, Coetzee MPA, Blom J, Stępkowski T, Kyrpides NC, Woyke T, Shapiro N, Whitman WB, Venter SN, Steenkamp ET. (2019) Genome-informed Bradyrhizobium taxonomy: where to from here?. Systematic and Applied Microbiology 10.1016/j.syapm.2019.03.006
Bradshaw RE, Sim AD, Chettri P, Dupont P-Y, Guo Y, Hunziker L, McDougal RL, van der Nest A, Fourie A, Wheeler D, Cox MP, Barnes I. (2019) Global population genomics of the forest pathogen Dothistroma septosporum reveal chromosome duplications in high dothistromin-producing strains. Molecular Plant Pathology 10.1111/mpp.12791
Naidoo S, Slippers B, Plett JM, Coles D, Oates CN. (2019) The road to resistance in forest trees. Frontiers in Plant Science 10:273. 10.3389/fpls.2019.00273
Slippers B, Alisic E. (2019) African science needs more leaders. Here’s how to develop them. The Conversation
Martın-Garcia J, Zas R, Solla A, Woodward S, Hantula J, Vainio EJ, Mullett M, Morales-Rodrıguez M, Vannini A, Martınez-Alvarez P, Pinto G, Alves A, Amaral J, Wingfield MJ, Fourie G, Steenkamp ET, Ahumada R, Sera B, Sanz-Ros AV, Raposo R, Elvira-Recuenco M, Iturritxa E, Gordon TR , Diez JJ. (2019) Environmentally friendly methods for controlling pine pitch canker . Plant Pathology 10(723):1-28. 10.1111/ppa.13009 PDF
Sadiković D, Piškur B, Barnes I, Hauptman T, Diminić D, Wingfield MJ, Jurc D. (2019) Genetic diversity of the pine pathogen Lecanosticta acicola, in Slovenia and Croatia. Plant Pathology 10.1111/ppa.13017 PDF
Haavik LJ, Hurley BP, Allison JD. (2019) Effect of Sirex noctilio (Hymenoptera: Siricidae) attack density on Pinus sylvestris (Pinaceae) survival. Canadian Entomologist 10.4039/tce.2019.12
Wondafrash M, Slippers B, Hurley BP, Garnas J. (2019) Local antagonism and resource partitioning between two invasive pine plantation pests. Agricultural and Forest Entomology 10.1111/afe.12330 PDF
Van den Berg N, Du Toit M, Morgan SW, Fourie G, De Beer ZW. (2019) First Report of Fusarium euwallaceae on Persea americana in South Africa. Plant Disease 10.1094/PDIS-10-18-1818-PDN
Nel WJ, Duong TA, De Beer ZW, Wingfield MJ. (2019) Black root rot: A long known but little understood disease. Plant Pathology 68(5):834-842. 10.1111/ppa.13011 PDF
van der Nest MA, Wingfield MJ, McTaggart AR, Van Wyk S, De Vos L, Trollip C, Santana QC, Naidoo K, Dong TA, Wilken PM, Chan W-Y, Palmer M, Soal NA, Roodt D, Steenkamp ET, Wingfield BD. (2019) Genomic analysis of the aggressive tree pathogen Ceratocystis albifundus. Fungal Biology 10.1016/j.funbio.2019.02.002 PDF
Zlatkovic M, Wingfield MJ, Jami F, Slippers B. (2019) Genetic uniformity characterizes the invasive spread of Neofusicoccum parvum and Diplodia sapinea in the Western Balkans. Forest Pathology 49:e12491. 10.1111/efp.12491 PDF
Zumaquero A, Martinez-Ferri E, Matas AJ, Reeksting B, Olivier NA, Pliego-Alfaro F, Barcelo A, van den Berg N, Pliego C. (2019) Rosellinia necatrix infection induces differential gene expression between tolerant and susceptible avocado rootstocks. PLoS ONE 14(2):e0212359. 10.1371/journal.pone.0212359