Co-Supervisor
Primary Supervisor
Co-Supervisor
Deputy Director of FABI
My primary research interests are bacterial evolution, systematics and diversity. I am specifically interested in how knowledge of these aspects of bacteriology can be applied to answer specific research questions related to the functioning of bacteria and bacterial communities in different environments. During the past few years my research group have focused mainly on the use of molecular, sequencing and genomics approaches when addressing these questions and the two main focus areas are bacteria associated with plants and aquatic environments.
My own research group focuses on applied bacterial genomics. We currently have numerous genomes available (one or more genome representing nearly all the species of Pantoea, Mixta, ParaburkholderiaandCaballeronia).Most of these genomes have been sequenced in-house or in caollaboration with the JGI. Our comparative and evolutionary studies is currently focused on how this genomic data could be used for the delineation of species.
My experience in the area of systematics has initially focused on the genus Pantoea which contains both clinical, plant pathogenic and natural environmental isolates.Based on the phylogenetic evaluation (MLSA) of various plant pathogenic genera within the Enterobacteriaceae (together with various international collaborators) we have described 14 new species, established 3 new genera and revised the taxonomy of several species.
In a joint Centre of Excellence in Tree Health Biotechnology project with Prof Emma Steenkamp, I am currently focusing on the descriptions of a large collection of nitrogen fixing Paraburkholderia strains isolated from indigenous papilionoid legume species by providing the taxonomic expertise. We have also been able to show that the symbiotic abilities of these undescribed species have unique African ancestries.
Seale T, Brözel VS, Potgieter SC, Rupp O, Blom J, Steenkamp ET, Venter SN. (2025) Diversity of Environmental Escherichia coli in Subtropical Freshwater Systems of South Africa. Current Microbiology 10.1007/s00284-025-04402-y
Maake MM, Beukes CW, van der Nest MA, Avontuur JR, Muema EK, Stepkowski T, Venter SN, Steenkamp ET. (2025) Argyrolobium legumes from an African centre of endemism associate with novel Bradyrhizobium species harbouring unique sets of symbiosis genes. Molecular Phylogenetics and Evolution 10.1016/j.ympev.2025.108471
Mavima L, Steenkamp ET, Beukes CW, Palmer M, De Meyer SE, James EK, Venter SN, Coetzee MPA. (2025) Estimated timeline for the evolution of symbiotic nitrogen fixing Paraburkholderia. Molecular Phylogenetics and Evolution 10.1016/j.ympev.2025.108447
Venter SN , Rodriguez-R LM, Chuvochina M, Palmer M, Hugenholtz P, Steenkamp ET. (2024) Options and considerations for validation of prokaryotic names under the SeqCode. Systematic and Applied Microbiology 10.1016/j.syapm.2024.126554
Coutinho TA, Carstensen G, Venter SN, Chen SF, Tarigan M, Wingfield MJ. (2024) Bacterial community in apparently healthy and asymptomatic Eucalyptus trees and those with symptoms of bacterial wilt. Journal of Plant Pathology 10.1007/s42161-024-01697-x
Van Lill M, Venter SN, Muema EK, Palmer M., Beukes CW, Chan WY, Steenkamp ET. (2024) SeqCode facilitates naming of South African rhizobia left in limbo. Systematics and Applied Microbiology 10.1016/j.syapm.2024.126504
Fourie, A, Venter, SN, Slippers, B, Fourie G. (2023) Pantoea bathycoeliae sp. nov and a Sodalis sp. are core gut microbiome symbionts of the two-spotted stink bug. Frontiers in Microbiology 10.3389/fmicb.2023.1284397
Avontuur JR, Wilken PM, Palmer M, Coetzee MPA, Stępkowski T, Venter SN, Steenkamp ET. (2023) Complex evolutionary history of photosynthesis in Bradyrhizobium. Microbial Genomics 10.1099/mgen.0.001105
Claassens R, Venter SN, Beukes CW, Stępkowski T, Chan WY, Steenkamp ET. (2023) Bradyrhizobium xenonodulans sp. nov. isolated from nodules of Australian Acacia species invasive to South Africa. Systematic and Applied Microbiology 10.1016/j.syapm.2023.126452
Wanjofu EI, Venter SN, Beukes CW, Steenkamp ET, Gwata ET, Muema EK. (2022) Nodulation and Growth Promotion of Chickpea by Mesorhizobium Isolates from Diverse Sources. MDPI-Microorganisms
Primary Supervisor
Co-Supervisor