The Avocado Research Programme (ARP; previously the Fruit Tree Biotechnology Programme) was established in 2008 as a collaborative initiative between the Hans Merensky Foundation (HMF), Westfalia Technological Services and researchers from the Forestry and Agricultural Biotechnology Institute (FABI). In 2020, under the leadership of by Professor Noëlani van den Berg, the Hans Merensky Chair in Avocado Research was established within the ARP, marking a substantial increase in support for the programme from both HMF and the University of Pretoria.

Research within the ARP is characterised by both industry specific and scholastic queries. The most prominent of which has been improving our understanding, on a molecular level, of the interaction between avocado and the root rot pathogen Phytophthora cinnamomi. Additionally, the ARP’s involvement in the development of industry leading research tools and techniques are accelerating research focused on this pathosystem, along with that of emerging pests and diseases. As such, research at the ARP has grown to include the distribution and impact of Rosellinia necatrix, Avocado sunblotch viroid as well as potentially threatening Ambrosia beetles and their fungal symbionts in South African orchards. Moreover, a disease clinic has been established within the programme, to service the increasing need for pest and pathogen identification in South African avocado orchards. Given the economic importance of the South African avocado industry and the increased threat from pests and pathogen, the ARP’s mission is to stay ahead of potential threats and continually improve avocado orchard health and productivity. Most importantly, the ARP is passionate about training young researchers to be successful and productive members of society, in keeping with the vision of Dr Hans Merensky.

 

New Publications

Wingfield BD, Berger DK, Coetzee MPA, Duong TA, Martin A, Pham NQ, Van den Berg N, Wilken PM, Arun-Chinnappa KS, Barnes I, Buthelezi S, Dahanayaka BA, Durán A, Engelbrecht J, Feurtey A, Fourie A, Fourie G, Hartley J, Kabwe ENK, Maphosa M, Narh Mensah DL, Nsibo DL, Potgieter L, Poudel B, Stukenbrock EH, Thomas C, Vaghefi N, Welgemoed T, Wingfield MJ. (2022) IMA genome‑F17. 13:19. 10.1186/s43008-022-00104-3
Wienk R, Mostert‑O’Neill M, Abeysekara N, Manosalva P, Freeman B, van den Berg N. (2022) Genetic diversity, population structure and clonal verification in South African avocado cultivars using single nucleotide polymorphism (SNP) markers. Tree Genetics and Genomes 18(41) 10.1007/s11295-022-01573-8 PDF
Joubert M, van den Berg N, Theron J, Swart V. (2022) Transcriptomics Advancement in the Complex Response of Plants to Viroid Infection. International Journal of Molecular Sciences 23(7677) 10.3390/ijms23147677 PDF
Backer R, Engelbrecht J, van den Berg N. (2022) Differing Responses to Phytophthora cinnamomi Infection in Susceptible and Partially Resistant Persea americana (Mill.) Rootstocks: A Case for the Role of Receptor-Like Kinases and Apoplastic Proteases. Frontiers in Plant Science 13 10.3389/fpls.2022.928176 PDF
Hartley J, Engelbrecht J, Van den Berg N. (2022) Detection and prevalence of Rosellinia necatrix in South African avocado orchards. European Journal of Plant Pathology 10.1007/s10658-022-02532-8
Fick A, Swart V, Van den Berg N. (2022) The ups and downs of plant NLR expression during pathogen infection. Frontiers in Plant Science 13:921148. 10.3389/fpls.2022.921148
Midgley KA, van den Berg N, Swart V. (2022) Unraveling plant cell death during Phytophthora Infection. Microorganisms 10(6) 10.3390/microorganisms10061139 PDF
Miyambo TM, Backer R, Engelbrecht J, Joubert F, van der Merwe NA, van den Berg N. (2022) The Identification and Characterization of Endopolygalacturonases in a South African Isolate of Phytophthora cinnamomi. Microorganisms 10(1061) 10.3390/microorganisms10051061 PDF
Fick A, Swart V, Backer R, Bombarely A, Engelbrecht J, van den Berg N. (2022) Partially Resistant Avocado Rootstock Dusa® Shows Prolonged Upregulation of Nucleotide Binding-Leucine Rich Repeat Genes in Response to Phytophthora cinnamomi Infection. Frontiers in Plant Science 13:793644. 10.3389/fpls.2022.793644
Engelbrecht J, Duong TA, Paap T, Hulbert JM, Hanneman J, Van den Berg N. (2022) Population genetic analyses of Phytophthora cinnamomi reveals three lineages and movement between natural vegetation and avocado orchards in South Africa. 10.1094/PHYTO-10-21-0414-R