FABI-9.jpg


Senior Lecturer

Department

Genetics
This email address is being protected from spambots. You need JavaScript enabled to view it.

Research Profiles

My Links


Co Supervisor
Omotayo Adenigba

Bio

My scientific interest is in population genetics and phylogeography of plant pathogenic fungi and the plants they infect. I use Chrysoporthe austroafricanaC. deuterocubensis and C. cubensis as fungal models to test hypotheses about how plant pathogens evolved, how they spread from one area to another, and what the future impact of anthropogenic phenomena such as climate change might be.

I am investigating the population genetics of these fungi from various countries and continents, using molecular markers to infer statistics describing populations' outcrossing abilities, recombination rates and linkage disequilibrium, and gene flow. I also have a special interest in gene trees and coalescent theory as applied to these fungi.

An exciting era is about to dawn on forest tree and pathogen genetics, and I am proud and priviledged to be a part of it. As Prof. Michio Kaku said, we are moving from scientific discovery to scientific mastery, and I believe that the current efforts by FABI and its programmes will play a crucial role in realizing this dream.

Teaching

Current Courses:

  • (2014-) GTS354: Genome Evolution & Phylogenetics

Past Courses:

  • (2014-2015) GTS367: Advanced Population Genetics
  • (2010-2013) GTS353: Population Genetics & The Evolution of Quantitative Traits
  • (2010-2013) GTS366: Plant Genetics & Biotechnology
Export to RIS
Publication
Masumba EA, Kapinga F, Mkamilo G, Salum K, Kulembeka H, Rounsley S, Bredeson JV, Lyons JB, Rokhsar DS, Kanju E, Katari MS, Myburg AA, van der Merwe NA, Ferguson ME. (2017) QTL associated with resistance to cassava brown streak and cassava mosaic diseases in a bi-parental cross of two Tanzanian farmer varieties, Namikonga and Albert. Theoretical and Applied Genetics 10.1007/s00122-017-2943-z
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
Chen SF, van der Merwe NA, Wingfield MJ, Roux J. (2016) Population structure of Holocryphia capensis (Cryphonectriaceae) from Metrosideros angustifolia and its pathogenicity to Eucalyptus species. Australasian Plant Pathology 45(2):201-207. 10.1007/s13313-016-0399-2
Robbertse L, Baron S, van der Merwe NA, Madder M, Stoltsz WH, Maritz-Olivier C. (2016) Genetic diversity, acaricide resistance status and evolutionary potential of a Rhipicephalus microplus population from a disease-controlled cattle farming area in South Africa. Ticks and Tick-borne Diseases 10.1016/j.ttbdis.2016.02.018
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
Baron S, Van der Merwe NA, Madder M, Maritz-Olivier C. (2015) SNP analysis infers that recombination is involved in the evolution of Amitraz resistance in Rhipicephalus microplus. PLoS ONE 10(7):e0131341. 10.1371/journal.pone.0131341 PDF
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
Crous PW, Wingfield MJ, Guarro J, Hernandez-Restrepo M, Sutton DA, Acharya K, Barber PA, Boekhout T, Dimitrov RA, Duenas M, Dutta AK, Gene J, Gouliamova DE, Groenewald M, Lombard L, Morozova OV, Sarkar J, Smith MTh, Stchigel AM, Wiederhold NP, Alexandrova AV, Antelmi I, Armengol J, Barnes I, Cano-Lira JF, Castaneda Ruiz RF, Contu M, Courtecuisse PrR, Da Silveira AL, Decock CA, De Goes A, Edathodu J, Ercole E, Firmino AC, Fourie A, Fournier J, Furtado EL, Geering ADW, Gershenzon J, Giraldo A, Gramaje D, Hammerbacher A, He X-L, Haryadi D, Khemmuk W, Kovalenko AE, Krawczynski R, Laich F, Lechat C, Lopes UP, Madrid H, Malysheva EF, Marin-Felix Y, Martin MP, Mostert L, Nigro F, Pereira OL, Picillo B, Pinho DB, Popov ES, Rodas Pelaez CA, Rooney-Latham S, Sandoval-Denis M, Shivas RG, Silva V, Stoilova-Disheva MM, Telleria MT, Ullah C, Unsicker SB, Van der Merwe NA, Vizzini A, Wagner H-G, Wong PTW, Wood AR, Groenewald JZ. (2015) Fungal Planet description sheets: 320–370. Persoonia 34:167-266. 10.3767/003158515X688433
Woudenberg JC, van der Merwe NA, Jurjević Z, Groenewald JZ, Crous PW. (2015) Diversity and movement of indoor Alternaria alternata across the mainland USA. Fungal Genetics and Biology 81:62-72. 10.1016/j.fgb.2015.05.003 PDF
Lombard L, van der Merwe NA, Groenewald JZ, Crous PW. (2015) Generic concepts in Nectriaceae. Studies in Mycology 80:189-245. 10.1016/j.simyco.2014.12.002 PDF
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
Lombard L, Van der Merwe NA, Groenewald JZ, Crous PW. (2014) Lineages in Nectriaceae: re-evaluating the generic status of Ilyonectria and allied genera. Phytopathologia Mediterranea 53(3):515-532. 10.14601/Phytopathol_Mediterr-14976 PDF
De Vos L, van der Merwe NA, Wingfield MJ, Myburg AA, Wingfield BD. (2013) Transmission ratio distortion in an interspecific cross between Fusarium circinatum and Fusarium subglutinans. Genes and Genomics 35:1-7. 10.1007/s13258-013-0066-8 PDF
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
Louw E, van der Merwe NA, Neitz AWH, Maritz-Olivier C. (2013) Evolution of the tissue factor pathway inhibitor-like Kunitz domain-containing protein family in Rhipicephalus microplus. International Journal for Parasitology 43:81-94. 10.1016/j.ijpara.2012.11.006 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
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
De Vos L, van der Nest MA, van der Merwe NA, Myburg AA, Wingfield MJ, Wingfield BD. (2011) Genetic analysis of growth, morphology and pathogenicity in the F1 progeny of an interspecific cross between Fusarium circinatum and Fusarium subglutinans. Fungal Biology 115(9):902-908. 10.1016/j.funbio.2011.07.003 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
Hunter GC, Van Der Merwe NA, Burgess TI, Carnegie AJ, Wingfield BD, Crous PW, Wingfield MJ. (2008) Global movement and population biology of Mycosphaerella nubilosa infecting leaves of cold-tolerant Eucalyptus globulus and E. nitens. Plant Pathology 57(2):235-242. 10.1111/j.1365-3059.2007.01756.x PDF
Van Wyk M, Van Der Merwe NA, Roux J, Wingfield BD, Kamgan GN, Wingfield MJ. (2006) Population genetic analyses suggest that the Eucalyptus fungal pathogen Ceratocystis fimbriata has been introduced into South Africa. South African Journal of Science 102(5-6):259-263. PDF
Gryzenhout M, Myburg H, Van Der Merwe NA, Wingfield BD, Wingfield MJ. (2004) Chrysoporthe, a new genus to accommodate Cryphonectria cubensis. Studies in Mycology 50:119-141. PDF
Van Der Merwe NA, Wingfield BD, Wingfield MJ. (2003) Primers for the amplification of sequence-characterized loci in Cryphonectria cubensis populations. Molecular Ecology Notes 3(4):494-497. 10.1046/j.1471-8286.2003.00508.x PDF
Van der Merwe NA, Myburg H, Wingfield BD, Rodas C, Wingfield MJ. (2001) Identification of Cryphonectria cubensis from Colombia based on rDNA sequence data. South African Journal of Science 97(7-8):295-296. PDF