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Department

Microbiology and Plant Pathology
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My research focuses on the evolutionary processes involved in microbial speciation. These include horizontal gene transfer between unrelated taxa, hybridization, as well as vegetative compatibility and sexual reproduction. Our experiments therefore typically involve conventional genetic and microbiological procedures, as well as contemporary genomics approaches.

At the species-population interface we examine the geographic and ecological distribution of certain microbial groups, primarily to learn more about the factors and mechanisms driving the observed patterns. As these studies are often severely affected by incomplete taxonomic sampling, we also explore the diversity of specific groups of microbes in native environments with the aim of discovering new taxa.

My research activities are closely aligned with the objectives of the Tree Protection Cooperative Programme (TPCP) and the DST-NRF Centre of Excellence in Tree Health Biotechnology (CTHB).

As a member of lecturing staff in the Department of Microbiology and Plant Pathology, I also teach at the undergraduate level.  Here I am specifically responsible for the 3rd year course on Bacterial Genetics.  This module introduces students to the various aspects of the biology of bacteria, with special emphasis on the molecular genetic principles underlying their development, growth and evolution.

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Book Chapters
Phalane FL, Steenkamp ET, Law IJ, Botha WF. 2008. The Diversity of Root Nodule Bacteria Associated with Lebeckia Species in South Africa. In: Biological Nitrogen Fixation: Towards Poverty Alleviation through Sustainable Agriculture. Springer, Dordrecht, The Netherlands, pp 119-120.
Steenkamp ET, Baldauf SL. 2004. Origin and evolution of animals, fungi and their unicellular allies (Opisthokonta). In: Organelles, Genomes and Eukaryote Phylogeny An Evolutionary Synthesis in the Age of Genomics. CRC Press-Taylor and Francis group , Boca Raton, USA, pp 109-129.
Wingfield MJ, Wingfield BD, Coutinho TA, Viljoen A, Britz H, Steenkamp ET. 1999. Pitch Canker: A South African Perspective. In: Current and potential impacts of pitch canker in radiata pine. Proceedings of the IMPACT Monterey Workshop, California, USA, vol. 30. pp 62-69. PDF
Wingfield MJ, Wingfield BD, Coutinho TA, Viljoen A, Britz H, Steenkamp ET. 1999. Pitch canker: A South African perspective. In: Proceedings of the IMPACT Monterey Workshop, Monterey California. CSIRO Forestry and Forest Products Technical Report NO 112. Devey M, Matheson C, Gordon T. (eds). pp 62-69.
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Publication
Palmer M, Steenkamp ET, Coetzee MPA, Chan W-Y, Van Zyl E, De Maayer P, Coutinho TA, Blom J, Smits THM, Duffy B, Venter SN. (2017) Phylogenomic resolution of the bacterial genus Pantoea and its relationship with Erwinia and Tatumella. Antonie van Leeuwenhoek 10.1007/s10482-017-0852-4
Aylward J, Steenkamp ET, Dreyer LL, Roets F, Wingfield BD, Wingfield MJ. (2017) A plant pathology perspective of fungal genome sequencing. IMA FUNGUS 8(1):1-15. 10.5598/imafungus.2017.08.01.01
Fru FF, Emma Steenkamp, Michael J. Wingfield, Santana QC , Roux J. (2017) Unique clones of the pitch canker fungus, Fusarium circinatum, associated with a new disease outbreak in South Africa. European Journal of Plant Pathology :1-11. 10.1007/s10658-016-1073-9
Wingfield BD, Duong TA, Hammerbacher A, van der Nest MA, Wilson A, Chang R, de Beer ZW, Steenkamp ET, Wilken PM, Naidoo K, Wingfield MJ. (2016) IMA Genome-F 7 Draft genome sequences for Ceratocystis fagacearum, C. harringtonii, Grosmannia penicillata, and Huntiella bhutanensis. IMA Fungus 7(2):317-323. 10.5598/imafungus.2016.07.02.11 PDF
Wingfield BD, Ambler JM, Coetzee MPA, De Beer ZW, Duong TA, Joubert F, Hammerbacher A, McTaggart AR, Naidoo K, Nguyen HDT, Ponomareva E, Santana QS, Seifert KA, Steenkamp ET, Trollip C, Van der Nest MA, Visagie CM, Wilken PM, Wingfield MJ, Yilmaz N. (2016) IMA Genome-F 6: Draft genome sequences of Armillaria fuscipes, Ceratocystiopsis minuta, Ceratocystis adiposa, Endoconidiophora laricicola, E. polonica and Penicillium freii DAOMC 242723. IMA Fungus 7(1):217-227. 10.5598/imafungus.2016.07.01.11 PDF
Kanzi AM, Wingfield BD, Steenkamp ET, Naidoo S, Van der Merwe NA. (2016) Intron derived size polymorphism in the mitochondrial genomes of closely related Chrysoporthe species. PLOS ONE 11(6):e0156104. 10.1371/journal.pone.0156104
McTaggart AR, van der Nest MA, Steenkamp ET, Roux J, Slippers B, Shuey LS, Wingfield MJ, Drenth A. (2016) Fungal Genomics Challenges the Dogma of Name-Based Biosecurity. PLoS Pathogens 12(5):e1005475. 10.1371/journal.ppat.1005475 PDF
Beukes CW, Stepkowski T, Venter SN, Clapa T, Phalane FL, le Roux MM, Steenkamp ET. (2016) Crotalarieae and Genisteae of the South African Great Escarpment are nodulated by novel Bradyrhizobium species with unique and diverse symbiotic loci. Molecular Phylogenetics and Evolution 100:206-218. 10.1016/j.ympev.2016.04.011
Palmer M, De Maayer P, Poulsen M, Steenkamp ET, Van Zyl E, Coutinho TA, Venter SN. (2016) Draft genome sequences of Pantoea agglomerans and Pantoea vagans isolates associated with termites. Standards in Genomic Sciences 11(23) 10.1186/s40793-016-0144-z PDF
Aylward J, Steenkamp ET, Dreyer LL, Roets F, Wingfield BD, Wingfield MJ. (2016) Genome sequences of Knoxdaviesia capensis and K. proteae (Fungi: Ascomycota) from Protea trees in South Africa. Standards in Genomic Sciences 11(1):1-7. 10.1186/s40793-016-0139-9 PDF
Santana QC, Coetzee MPA, Wingfield BD, Wingfield MJ, Steenkamp ET. (2016) Nursery linked plantation‐outbreaks and evidence for multiple introductions of the pitch canker pathogen Fusarium circinatum into South Africa. Plant Pathology 65:357–368. 10.1111/ppa.12437
Maphosa MN, Steenkamp ET, Wingfield BD. (2016) Genome-based selection and characterization of Fusarium circinatum-specific sequences. G3: Genes|Genomes|Genetics 6(3):631-639. 10.1534/g3.115.025817
Aylward J, Steenkamp ET, Dreyer LL, Roets F, Wingfield MJ, Wingfield BD. (2016) Genetic basis for high population diversity in Protea-associated Knoxdaviesia. Fungal Genetics and Biology 96:47-57. 10.1016/j.fgb.2016.10.002
Magadlela A, Vardien W, Kleinert A, Steenkamp ET, Valentine AJ. (2016) Variable P supply affects N metabolism in a legume tree, Virgilia divaricata, from nutrient-poor Mediterranean-type ecosystems. Functional Plant Biology 43(3):287-297. 10.1071/FP15262
Vardien W, Steenkamp ET, Valentine AJ. (2016) Legume nodules from nutrient-poor soils exhibit high plasticity of cellular phosphorus recycling and conservation during variable phosphorus supply. Journal of Plant Physiology 191:73-81. 10.1016/j.jplph.2015.12.002
Visser EA, Wegrzyn JL, Steenkamp ET, Myburg AA, Naidoo S. (2015) Combined de novo and genome guided assembly and annotation of the Pinus patula juvenile shoot transcriptome. BMC Genomics 16:1057. 10.1186/s12864-015-2277-7 PDF
van der Nest MA, Wingfield MJ, Wilken PM, Coetzee MPA, Naidoo K, Roodt D, Sauerman E, Godlonton T, Trollip C, McTaggart AR, Steenkamp ET, Wingfield BD. (2015) Saprophytic and pathogenic fungi in the Ceratocystidaceae differ in their ability to metabolize plant-derived sucrose. BMC Evolutionary Biology 15:273. 10.1186/s12862-015-0550-7 PDF
Wingfield BD, Barnes I, De Beer ZW, De Vos L, Duong TA, Kanzi AM, Naidoo K, Nguyen HDT, Santana QC, Sayari M, Seifert KA, Steenkamp ET, Trollip C, Van der Merwe N, Van der Nest MA, Wilken PM, Wingfield MJ. (2015) Draft genome sequences of Ceratocystis eucalypticola, Chrysoporthe cubensis, C. deuterocubensis, Davidsoniella virescens, Fusarium temperatum, Graphilbum fragrans, Penicillium nordicum, and Thielaviopsis musarum. IMA Fungus 6(2):493-506. 10.5598/imafungus.2015.06.02.13 PDF
Aylward J, Dreyer LL, Steenkamp ET, Wingfield MJ, Roets F. (2015) Knoxdaviesia proteae is not the only Knoxdaviesia-symbiont of Protea repens. IMA Fungus 6(2):471-476. 10.5598/imafungus.2015.06.02.10 PDF
Steenkamp ET, van Zyl E, Beukes CW, Avontuur J, Chan W-Y, Palmer M, Mthombeni LS, Phalane FL, Sereme TK, Venter SN. (2015) Burkholderia kirstenboschensis sp. nov. nodulates papilionoid legumes indigenous to South Africa. Systematic and Applied Microbiology 38(8):545-554. 10.1016/j.syapm.2015.09.003
Wingfield BD, Ades PK, Al-Naemi FA, Beirn LA, Bihon W, Crouch JA, De Beer ZW, De Vos L, Duong TA, Fields CJ, Fourie G, Kanzi AM, Malapi-Wight M, Pethybridge SJ, Radwan O, Rendon G, Slippers B, Santana QC, Steenkamp ET, Taylor PWJ, Vaghefi N, Van der Merwe NA, Veltri D, Wingfield MJ. (2015) IMA Genome-F 4. Draft genome sequences of Chrysoporthe austroafricana, Diplodia scrobiculata, Fusarium nygamai, Leptographium lundbergii, Limonomyces culmigenus, Stagonosporopsis tanaceti, and Thielaviopsis punctulata. IMA Fungus 6(1):233-248. 10.5598/imafungus.2015.06.01.15 PDF
Wilson AM, Wilken PM, van der Nest MA, Steenkamp ET, Wingfield MJ, Wingfield BD. (2015) Homothallism: An umbrella term for describing diverse sexual behaviours. IMA Fungus 6(1):207-214. 10.5598/imafungus.2015.06.01.13 PDF
Herron DA, Wingfield MJ, Wingfield BD, Rodas CA, Marincowitz S, Steenkamp ET. (2015) Novel taxa in the Fusarium fujikuroi species complex from Pinus spp.. Studies in Mycology 80:131-150. 10.1016/j.simyco.2014.12.001 PDF
Aylward J, Dreyer LL, Steenkamp ET, Wingfield MJ, Roets F. (2015) Long-distance dispersal and recolonization of a fire-destroyed niche by a mite-associated fungus. Fungal Biology 119(4):245-256. 10.1016/j.funbio.2014.12.010
Roberts R, Steenkamp ET, Pietersen G. (2015) Three novel lineages of ‘Candidatus Liberibacter africanus’ associated with native rutaceous hosts of Trioza erytreae in South Africa. International Journal of Systematic and Evolutionary Microbiology 65:723-731. 10.1099/ijs.0.069864-0
De Vos L, Steenkamp ET, Martin SH, Santana QC, Fourie G, Van der Merwe NA, Wingfield MJ, Wingfied BD. (2014) Genome-wide macrosynteny among Fusarium species in the Gibberella fujikuroi complex revealed by amplified fragment length polymorphisms. PLoS ONE 9(12):e114682. 10.1371/journal.pone.0114682 PDF
Morris AR, Fourie G, Greyling I, Steenkamp ET, Jones NB. (2014) Re-use of seedling containers and Fusarium circinatum association with asymptomatic Pinus patula planting stock. Southern Forests: a Journal of Forest Science 76(3):177-187. 10.2989/20702620.2014.957491
Aylward J, Dreyer LL, Steenkamp ET, Wingfield MJ, Roets F. (2014) Panmixia defines the genetic diversity of a unique arthropod-dispersed fungus specific to Protea flowers. Ecology and Evolution 4(17):3444-3455. 10.1002/ece3.1149 PDF
Vardien W, Mesjasz-Przybylowicz J, Przybylowicz WJ, Wang Y, Steenkamp ET, Valentine AJ. (2014) Nodules from Fynbos legume Virgilia divaricata have high functional plasticity under variable P supply levels. Journal of Plant Physiology 171:1732-1739. 10.1016/j.jplph.2014.08.005
Swett CL, Porter B, Fourie G, Steenkamp ET, Gordon TR, Wingfield MJ. (2014) Association of the pitch canker pathogen Fusarium circinatum with grass hosts in commercial pine production areas of South Africa. Southern Forests: a Journal of Forest Science 76(3):161-166. 10.2989/20702620.2014.916087 PDF
Van der Nest MA, Bihon W, De Vos L, Naidoo K, Roodt D, Rubagotti E, Slippers B, Steenkamp ET, Wilken PM, Wilson A, Wingfield MJ, Wingfield BD. (2014) Draft genome sequences of Diplodia sapinea, Ceratocystis manginecans, and Ceratocystis moniliformis. IMA Fungus 5(1):135-140. 10.5598/imafungus.2014.05.01.13 PDF
Fourie G, Wingfield MJ, Wingfield BD, Jones NB, Morris AR, Steenkamp ET. (2014) Culture-independent detection and quantification of Fusarium circinatum in a pine-producing seedling nursery. Southern Forests 76(3):137-143. 10.2989/20702620.2014.899058 PDF
Mitchell RG, Wingfield MJ, Steenkamp ET, Roux J, Verryn S, Coutinho TA. (2014) Comparison of the tolerance of Pinus patula seedlings and established trees to infection by Fusarium circinatum. Southern Forests 76(3):151-159. 10.2989/20702620.2014.899061 PDF
Wilken PM, Steenkamp ET, Wingfield MJ, De Beer ZW, Wingfield BD. (2014) DNA loss at the Ceratocystis fimbriata mating locus results in self-sterility. PLoS ONE 9(3):e92180. 10.1371/journal.pone.0092180 PDF
Aylward J, Dreyer LL, Steenkamp ET, Wingfield MJ, Roets F. (2014) Development of polymorphic microsatellite markers for the genetic characterisation of Knoxdaviesia proteae (Ascomycota: Microascales) using ISSR-PCR and pyrosequencing. Mycological Progress 13(2):439-444. 10.1007/s11557-013-0951-1 PDF
Steenkamp ET, Makhari OM, Coutinho TA, Wingfield BD, Wingfield MJ. (2014) Evidence for a new introduction of the pitch canker fungus Fusarium circinatum in South Africa. Plant Pathology 63(3):530-538. 10.1111/ppa.12136 PDF
Wilken PM, Steenkamp ET, Wingfield MJ, De Beer ZW, Wingfield BD. (2013) Draft nuclear genome sequence for the plant pathogen, Ceratocystis fimbriata. IMA Fungus 4:357-358. 10.5598/imafungus.2013.04.02.14 PDF
Van Wyk N, Trollope KM, Steenkamp ET, Wingfield BD, Volschenk H. (2013) Identification of the gene for beta-fructofuranosidase from Ceratocystis moniliformis CMW 10134 and characterization of the enzyme expressed in Saccharomyces cerevisiae. BMC Biotechnology 13:100. 10.1186/1472-6750-13-100
Beukes CW, Venter SN, Law IJ, Phalane FL, Steenkamp ET. (2013) South African papilionoid legumes are nodulated by diverse Burkholderia with unique nodulation and nitrogen-fixation loci. PLos ONE 8(7):e68406. 10.1371/journal.pone.0068406 PMCID: PMC3708930 PDF
van der Nest MA, Steenkamp ET, Wilken MP, Stenlid J, Wingfield MJ, Wingfield BD, Slippers B. (2013) Mutualism and asexual reproduction influence recognition genes in a fungal symbiont. Fungal Biology 117:439-450. 10.1016/j.funbio.2013.05.001 PDF
Fitza K, Payn KG, Steenkamp ET, Myburg AA, Naidoo S. (2013) Chitosan application improves resistance to Fusarium circinatum in Pinus patula. South African Journal of Botany 85:70-78.
Fourie G, van der Merwe NA, Wingfield BD, Bogale M, Tudzynski B, Wingfield MJ, Steenkamp ET. (2013) Evidence for inter-specific recombination among the mitochondrial genomes of Fusarium species in the Gibberella fujikuroi complex. BMC Genomics 14:605. 10.1186/1471-2164-14-605 PDF
Geiser DM, Aoki T, Bacon CW, Baker SE, Bhattacharyya MK, Brandt ME, Brown DW, Burgess LW, Chulze S, Coleman JJ, Correll JC, Covert SF, Crous PW, Cuomo CA, De Hoog GS, Di Pietro A, Elmer WH, Epstein L, Frandsen RJN, Freeman S, Gagkaeva T, Glenn AE, Gordon TR, Gregory NF, Hammond-Kosack KE, Hanson LE, del Mar Jímenez-Gasco M, Kang S, Kistler HC, Kuldau GA, Leslie JF, Logrieco A, Lu G, Lysøe E, Ma L-J, McCormick SP, Migheli Q, Moretti A, Munaut F, O’Donnell K, Pfenning L, Ploetz RC, Proctor RH, Rehner SA, Robert VARG, Rooney AP, bin Salleh B, Scandiani MM, Scauflaire J, Short DPG, Steenkamp E, Suga H, Summerell BA, Sutton DA, Thrane U, Trail F, Van Diepeningen A, VanEtten HD, Viljoen A, Waalwijk C, Ward TJ, Wingfield MJ, Xu J-R, Yang X-B, Yli-Mattila T, Zhang N. (2013) One Fungus, One Name: Defining the Genus Fusarium in a Scientifically Robust Way That Preserves Longstanding Use. Phytopathology 103(5):400-408. 10.1094/PHYTO-07-12-0150-LE
Martin SH, Steenkamp ET, Wingfield MJ, Wingfield BD. (2013) Mate-recognition and species boundaries in the ascomycetes. Fungal Diversity 58:1-12. 10.1007/s13225-012-0217-2 PDF
Mitchell RG, Wingfield MJ, Hodge GR, Steenkamp ET, Coutinho TA. (2013) The tolerance of Pinus patula × Pinus tecunumanii, and other pine hybrids, to Fusarium circinatum in greenhouse trials. New Forests 44:443-456. 10.1007/s11056-012-9355-3 PDF
Naidoo K, Steenkamp ET, Coetzee MPA, Wingfield MJ, Wingfield BD. (2013) Concerted Evolution in the Ribosomal RNA Cistron. PLoS ONE 8 10.1371/journal.pone.0059355 PDF
Steenkamp ET, Wingfield MJ. (2013) Global forest research, science education and community service positively impacted by a unique Centre of Excellence in Tree Health Biotechnology. Southern Forests 75:71-80. 10.2989/20702620.2013.800757 PDF
Van der Merwe NA, Steenkamp ET, Rodas C, Wingfield BD, Wingfield MJ. (2013) Host switching between native and non-native trees in a population of the canker pathogen Chrysoporthe cubensis from Colombia. Plant Pathology 62:642-648. 10.1111/j.1365-3059.2012.02657.x PDF
Wilken PM, Steenkamp ET, Hall TA, De Beer ZW, Wingfield MJ, Wingfield BD. (2012) Both mating types in the heterothallic fungus Ophiostoma quercus contain MAT1-1 and MAT1-2 genes. Fungal Biology 116(3):427-437. 10.1016/j.funbio.2012.01.002 PDF
Wingfield BD, Steenkamp ET, Santana QC, Coetzee MPA, Bam S, Barnes I, Beukes CW, Chane W-Y, de Vos L, Fourie G, Friend M, Gordon TR, Herron DA, Holt C, Korf I, Kvas M, Martin SH, Mlonyeni XO, Naidoo K, Phasha MM, Postma A, Reva O, Roos H, Simpson M, Slinski S, Slippers B, Sutherland R, van der Merwe NA, van der Nest MA, Venter SNV, Wilken PM, Yandell M, Zipfel R, Wingfield MJ. (2012) First fungal genome sequence from Africa: a preliminary analysis. South African Journal of Science 108:104-122. 10.4102/sajs.v108i1/2.537 PDF
Stepkowski T, Watkin E, McInnes A, Gurda D, Gracz J, Steenkamp ET. (2012) Distinct Bradyrhizobium communities nodulate legumes native to temperate and tropical monsoon Australia. Molecular Phylogenetics and Evolution 63:265-277. 10.1016/j.ympev.2011.12.020 PDF
Mitchell RG, Wingfield MJ, Hodge GR, Steenkamp ET, Coutinho TA. (2012) Selection of Pinus spp. in South Africa for tolerance to infection by the pitch canker fungus. New Forests 43:473-489. 10.1007/s11056-011-9293-5 PDF
Mitchell RG, Coutinho TA, Steenkamp E, Herbert M, Wingfield MJ. (2012) Future outlook for Pinus patula in South Africa in the presence of the pitch canker fungus (Fusarium circinatum). Southern Forests 74:203-210. 10.2989/20702620.2012.741792 PDF
Mitchell RG, Wingfield MJ, Steenkamp ET, Coutinho TA. (2012) Tolerance of Pinus patula full-sib families to Fusarium circinatum in a greenhouse study. Southern Forests 74:247-252. 10.2989/20702620.2012.741788 PDF
Steenkamp ET, Rodas CA, Kvas M, Wingfield MJ. (2012) Fusarium circinatum and pitch canker of Pinus in Colombia. Australasian Plant Pathology 41:483-491. 10.1007/s13313-012-0120-z PDF
Fourie G, Steenkamp ET, Ploetz RC, Gordon TR, Viljoen A. (2011) Current status of the taxonomic position of Fusarium oxysporum formae specialis cubense within the Fusarium oxysporum complex. Infection, Genetics and Evolution 11:533-542. 10.1016/j.meegid.2011.01.012 PDF
Iturritxa E, Ganley RJ, Wright J, Heppe E, Steenkamp ET, Gordon TR, Wingfield MJ. (2011) A genetically homogenous population of Fusarium circinatum causes pitch canker of Pinus radiata in the Basque Country, Spain. Fungal Biology 115:288-295. 10.1016/j.funbio.2010.12.014 PDF
Madoroba E, Steenkamp ET, Theron J, Scheirlinck I, Cloete ET, Huys G. (2011) Diversity and dynamics of bacterial populations during spontaneous sorghum fermentations used to produce ting, a South African food. Systematic and Applied Microbiology 34:227-234. 10.1016/j.syapm.2010.11.016 PDF
Martin SH, Wingfield BD, Wingfield MJ, Steenkamp ET. (2011) Structure and evolution of the Fusarium mating type locus: New insights from the Gibberella fujikuroi complex. Fungal Genetics and Biology 48(7):731-740. 10.1016/j.fgb.2011.03.005 PDF
Martin SH, Wingfield BD, Wingfield MJ, Steenkamp ET. (2011) Causes and consequences of variability in peptide mating pheromones of ascomycete fungi. Molecular Biology and Evolution 28(7):1987-2003. 10.1093/molbev/msr022 PDF
Mitchell RG, Steenkamp ET, Coutinho TA, Wingfield MJ. (2011) The pitch canker fungus, Fusarium circinatum: Implications for South African forestry. Southern Forests 73(1):1-13. 10.2989/20702620.2011.574828 PDF
van der Nest MA, Steenkamp ET, Slippers B, Mongae A, van Zyl K, Stenlid J, Wingfield MJ, Wingfield BD. (2011) Gene expression associated with vegetative incompatibility in Amylostereum areolatum. Fungal Genetics and Biology 48(11):1034-1043. 10.1016/j.fgb.2011.08.001 PDF
van der Merwe NA, Gryzenhout M, Steenkamp ET, Wingfield BD, Wingfield MJ. (2010) Multigene phylogenetic and population differentiation data confirm the existence of a cryptic species within Chrysoporthe cubensis. Fungal Biology 114(11-12):966-979. 10.1016/j.funbio.2010.09.007 PDF
Bogale M, Steenkamp ET, Wingfield MJ, Wingfield BD. (2009) Diverse Fusarium solani isolates colonise agricultural environments in Ethiopia. European Journal of Plant Pathology 124(3):369-378. 10.1007/s10658-008-9422-y PDF
Fourie G, Steenkamp ET, Gordon TR, Viljoen A. (2009) Evolutionary Relationships among the Fusarium oxysporum f. sp. cubense Vegetative Compatibility Groups. Applied and Environmental Microbiology 75(14):4770-4781. 10.1128/AEM.00370-09 PDF
Kvas M, Marasas WFO, Wingfield BD, Wingfield MJ, Steenkamp ET. (2009) Diversity and evolution of Fusarium species in the Gibberella fujikuroi complex. Fungal Diversity 34:1-21. PDF
Lui Y, Steenkamp ET, Brinkmann H, Forget L, Philippe H, Lang BF. (2009) Phylogenomic analyses predict sistergroup relationship of nucleariids and Fungi and paraphyly of zygomycetes with significant support. BMC Evolutionary Biology 9:272. PDF
Madoroba E, Steenkamp ET, Theron J, Huys G, Scheirlinck I, Cloete ET. (2009) Polyphasic taxonomic characterization of lactic acid bacteria isolated from spontaneous sorghum fermentations used to produce ting, a traditional South African food. African Journal of Biotechnology 8(3):458-463. PDF
Santana QC, Coetzee MPA, Steenkamp ET, Mlonyeni OX, Hammond GNA, Wingfield MJ, Wingfield BD. (2009) Microsatellite discovery by deep sequencing of enriched genomic libraries. BioTechniques 46:217-223. 10.2144/000113085 PDF
van der Nest MA, Slippers B, Steenkamp ET, De Vos L, Van Zyl K, Stenlid J, Wingfield MJ, Wingfield BD. (2009) Genetic linkage map for Amylostereum areolatum reveals an association between vegetative growth and sexual and self-recognition. Fungal Genetics and Biology 46(9):632-641. 10.1016/j.fgb.2009.06.002 PDF
van der Nest MA, Slippers B, Steenkamp ET, De Vos L, van Zyl K, Stenlid J, Wingfield MJ, Wingfield BD. (2009) Genetic linkage map for Amylostereum areolatum reveals an association between vegetative growth and sexual and self recognition. Fungal Genetics and Biology 46:632-641. PDF
Steenkamp ET, Stepkowski T, Przymusiak A, Botha WJ, Law IJ. (2008) Cowpea and peanut in southern Africa are nodulated by diverse Bradyrhizobium strains harboring nodulation genes that belong to the large pantropical clade common in Africa. Molecular Phylogenetics and Evolution 48:1131-1144. 10.1016/j.ympev.2008.04.032 PDF
Kvas M, Steenkamp ET, Al Adawi AO, Deadman ML, Al Jahwari AA, Marasas WFO, Wingfield BD, Ploetz RC, Wingfield MJ. (2008) Fusarium mangiferae associated with mango malformation in the Sultanate of Oman. European Journal of Plant Pathology 121(2):195-199. 10.1007/s10658-007-9231-8 PDF
Wingfield MJ, Hammerbacher A, Ganley RJ, Steenkamp ET, Gordon TR, Wingfield BD, Coutinho TA. (2008) Pitch canker caused by Fusarium circinatum - A growing threat to pine plantations and forests worldwide. Australasian Plant Pathology 37(4):319-334. 10.1071/AP08036 PDF
Bogale M, Wingfield BD, Wingfield MJ, Steenkamp ET. (2007) Species-specific primers for Fusarium redolens and a PCR-RFLP technique to distinguish among three clades of Fusarium oxysporum. FEMS Microbiology Letters 271(1):27-32. 10.1111/j.1574-6968.2007.00687.x PDF
Coutinho TA, Steenkamp ET, Mongwaketsi K, Wilmot M, Wingfield MJ. (2007) First outbreak of pitch canker in a South African pine plantation. Australasian Plant Pathology 36(3):256-261. 10.1071/AP07017 PDF
Kvas M, Steenkamp ET, Wingfield BD, Wingfield MJ, Marasas WFO. (2007) Fusarium species associated with Syzygium cordatum floral malformation. South African Journal of Science 103(1-2):XI-XI. PDF
Bogale M, Wingfield BD, Wingfield MJ, Steenkamp ET. (2006) Characterization of Fusarium oxysporum isolates from Ethiopia using AFLP, SSR and DNA sequence analyses. Fungal Diversity 23:51-66. PDF
Marasas WFO, Ploetz RC, Wingfield MJ, Wingfield BD, Steenkamp ET. (2006) Mango malformation disease and the associated Fusarium species. Phytopathology 96(6):667-672. 10.1094/PHYTO-96-0667 PDF
Steenkamp ET, Wright J, Baldauf SL. (2006) The Protistan Origins of Animals and Fungi. Molecular Biology and Evolution 23(1):93-106. 10.1093/molbev/msj011 PDF
Bogale M, Wingfield BD, Wingfield MJ, Steenkamp ET. (2005) Simple sequence repeat markers for species in the Fusarium oxysporum complex. Molecular Ecology Notes 5(3):622-624. 10.1111/j.1471-8286.2005.01015.x PDF
Steenkamp ET, Van Der Nest MA, Wingfield MJ, Wingfield BD. (2003) Detection of hybrids in commercially propagated Eucalyptus using 5S rDNA sequence. Forest Genetics 10:195-205. PDF
Britz H, Steenkamp ET, Coutinho TA, Wingfield BD, Marasas WFO, Wingfield MJ. (2002) Two new species of Fusarium section Liseola associated with mango malformation. Mycologia 94(4):722-730. PDF
Steenkamp ET, Wingfield BD, Desjardins AE, Marasas WFO, Wingfield MJ. (2002) Cryptic speciation in Fusarium subglutinans. Mycologia 94(6):1032-1043. PDF
Roux J, Steenkamp ET, Marasas WFO, Wingfield MJ, Wingfield BD. (2001) Characterization of Fusarium graminearum from Acacia and Eucalyptus using β-tubulin and histone gene sequences. Mycologia 93(4):704-711. PDF
Steenkamp ET, Coutinho TA, Desjardins AE, Wingfield BD, Marasas WFO, Wingfield MJ. (2001) Gibberella fujikuroi mating population E is associated with maize and teosinte. Molecular Plant Pathology 2:215-221. 10.1046/j.1464-6722.2001.00072.x PDF
Steenkamp ET, Wingfield BD, Coutinho TA, Zeller KA, Wingfield MJ, Marasas WFO, Leslie JF. (2000) PCR-based identification of MAT-1 and MAT-2 in the Gibberella fujikuroi species complex. Applied and Environmental Microbiology 66(10):4378-4382. PDF
van der Nest M, Steenkamp ET, Wingfield BD, Wingfield MJ. (2000) Development of simple sequence repeat (SSR) markers in Eucalyptus from amplified inter-simple sequence repeats (ISSR). Plant Breeding 119 :433-436.
Steenkamp E, Britz H, Coutinho T, Wingfield B, Marasas W, Wingfield M. (2000) Molecular characterization of Fusarium subglutinans associated with mango malformation. Molecular Plant Pathology 1(3):187-193. PDF
Van der Nest MA, Steenkamp ET, Wingfield BD, Wingfield MJ. (2000) Development of simple sequence repeat (SSR) markers in Eucalyptus from amplified inter-simple sequence repeats (ISSR). Plant Breeding 119(5):433-436. 10.1046/j.1439-0523.2000.00515.x PDF
Steenkamp ET, Wingfield BD, Coutinho TA, Wingfield MJ, Marasas WFO. (1999) Differentiation of Fusarium subglutinans f. sp. pini by histone gene sequence data. Applied and Environmental Microbiology 65(8):3401-3406. PDF
Steenkamp ET, Wingfield BD, Swart WJ, Wingfield MJ. (1998) Double-stranded RNA and associated virulence in South African isolates of Sphaeropsis sapinea. Canadian Journal of Botany 76(8):1412-1417. PDF