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Chinese president JinTao Hu visits University of Pretoria. |
Chinese State Counsellor (former Minister of Education) Madam ZiLi Chen visits FABI. |
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| Prof. Mike Wingfield meets and competes with rector XiaoYan Chen (South China Agricultural University). | Mr. YangGen Wei (head of education division of Chinese embassy in SA) meets rector Prof. Calie Pistorius (University of Pretoria), and Dr. XuDong Zhou. |
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| CFEPP team (from left to right): JiaGuang Cao, XuDong Zhou, Mike Wingfield, ShuaiFei Chen, and ShiChao Zhang. | Canker found on Eucalyptus grandis in China caused by the destructive pathogen Kirramyces zuluense. This pathogen was first found and described in South Africa and is now known to have a wide distribution in Eucalypt-growing parts of the world. |
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| Quambalaria leaf blight found on Corymbia citriodora in China. Discovery of the pathogen Quambalaria pitereka in China marks its first detection outside Australia, where it is believed to be native. | Phaeophleospora destructans found on Eucalyptus hybrids in China. This is one of the most destructive leaf and shoot blight pathogens of Eucalyptus, first found in North Sumatra and now having spread throughout SE Asia. |
FABI News
12 Dec 2022
EPPI team undertakes a greenhouse inoculation trial
The EPPI team has been undertaking a large-scale greenhouse trial running for a third consecutive year since 2020.
6 Dec 2022
Interns present a research seminar
Members of the FABI Internship in Phytosanitation and Biotechnology programme presented a research seminar.
1 Dec 2022
Unmanned Aerial Vehicles to track Gonipterus sp. n. 2 damage
A team of FABIans travelled to Melmoth to assess Gonipterus sp. n. 2 damage levels on both young and old Eucalyptus dunnii compartments using a UAV.
30 Nov 2022
RGE-FABI THP research seminar hosted in Indonesia
The annual RGE-FABI Tree Health Programme Symposium took place in Indonesia on Thursday 24 November.
29 Nov 2022
Book fun at MMM
Monday Morning Meeting ‘Book Fun’ has become a tradition in the Institute and when FABIans can share with their peers the books they enjoyed reading.
FABI in a nutshell
Research Features
Da Vinci's Yeast: FABIans Prof. Cobus Visagie, Dr Neriman Yilmaz, and their collaborators have recently described and named a newly discovered yeast species of the famous Italian painter, draughtsman, engineer, scientist, theorist, sculptor, and architect Leonardo da Vinci.
The potential economic impact of the PSHB invasion in South Africa has been calculated to be a massive R275 billion over the next ten years, if nothing is done to stop the spread of this invasive beetle. Researchers from FABI collaborated with Stellenbosch University ecologists and economists to model the unmitigated economic impact of this invasion.
A recently published paper in the journal Current Forestry Reports documents a collaboration between an international team of forest pathologists and invasion scientists. Led by Dr Trudy Paap, the authors present a framework for conceptualizing and managing invasive forest pathogens.
A recently published review article by Dr Andi Wilson in a special issue of the journal 'Microbiology & Molecular Biology Reviews' provides details of the genes that are essential to the sexual cycle in filamentous Ascomycete fungi and further describes their functions in a variety of model and non-model species.
Penicillium section Canescentia re-evaluated and five new species described from the fynbos biome in South Africa.
In November 2019, the DSI-NRF Centre of Excellence for Invasion Biology hosted a workshop on ‘Frameworks used in Invasion Science’. The workshop led to a NeoBiota special issue on this theme, and includes a review by FABI researchers and international colleagues, exploring frameworks in the context of forest pathology.
A doctoral study in FABI confirms for the first time the presence of Xylosandrus crassiusculus, a polyphagous ambrosia beetle and its fungal symbiont, Ambroseilla roeperi, in three provinces in South Africa. The authors warn that this beetle species could be a threat to native and plantation trees.
A review on invasive gall-forming wasps that threaten non-native Eucalyptus plantations by researchers in the TPCP appears in Agricultural and Forest Entomology. They profile several species of likely Australian origin that have established on non-native Eucalyptus plantations globally and discuss various challenges to their management.
A study in the TPCP confirms the identity of seven novel fungal species associated with Dendroctonus valens, the red turpentine beetle. The study follows on surveys on the fungal associates of the beetle in China and North America. Results from this work appear in Persoonia.
A postdoctoral study in the TPCP describes two novel Huntiella species in the African clade, bringing the number of known species in the genus to 31. Though closely related, the two species display different mating systems. Outcomes from this study appear in the journal MycoKeys.
A review of the invasion history and global management strategies of Eucalyptus snout beetles in the Gonipterus scutellatus species complex by researchers in the TPCP appears in the Journal of Pest Science.
In a collaborative venture with Dr Jos Houbraken (Westerdijk Fungal Biodiversity Institute, the Netherlands), Prof. Cobus M Visagie, Dr Neriman Yilmaz (both from FABI) and others have recently completed and published a major study updating the taxonomy of the Eurotiales.
A study in the Forest Molecular Genetics (FMG) Programme at FABI interrogates the benefits of implementing genomic selection for growth and wood quality traits in an established Eucalyptus grandis breeding programme in South Africa. Outcomes from this study appear in an article.
The first study on alternative weed and cultivated hosts of Spongospora subterraneaf. sp. subterranea (Sss), in southern Africa identifies two species as ideal trap crops for rotation with potatoes. The study also introduces three new families to the known hosts of Sss in the region.
A consortium of microbiologists from around the globe, FABI included, is pushing for an overhaul in how scientific names are assigned to uncultivated bacteria and archaea. Despite their ecological, agricultural and medical importance, these organisms traditionally have not been recognized by the international body governing the nomenclature of prokaryotes.
Professor Cobus Visagie is a researcher in the Applied Mycology group at FABI. One of the group’s research goals is to discover fungal diversity in South Africa, and Cobus’ research is strongly focussed on the economically important genera Aspergillus, Penicillium and Talaromyces.
Postdoctoral research by Dr Norman Muzhinji in the Potato Pathology Programme at the Forestry and Agricultural Biotechnology Institute (FABI) sheds light on the genetic structure and diversity of Spongospora subterranea f. sp. subterranea in four potato-growing regions in South Africa, providing valuable insights on its management.
An MSc study by Kira Lynn in the RGE-FABI Tree Health Programme at the University of Pretoria has described a new Fusarium species, Fusarium rekanum sp. nov., associated with Euwallacea perbrevis, an ambrosia beetle species infesting Acacia crassicarpa plantations in Riau, Indonesia.
FABI postdoctoral Fellow Dr Andi Wilson has established a CRISPR-Cas9-based genome editing protocol for use in Huntiella omanensis, a tree-inhabiting fungus belonging to the Ceratocystidaceae family.
Research undertaken as part of a PhD study by Molly Malefo at the University of Pretoria’s Department of Plant and Soil Sciences and Forestry and Agricultural Biotechnology Institute sheds more light on the role of protease inhibitors in plants under drought stress.
The South African National Biodiversity Institute (SANBI) has funded a postdoctoral research project dedicated to monitoring plant health in botanical gardens and arboreta across South Africa. Two postdoctoral Fellows at the University of Pretoria’s Forestry and Agricultural Biotechnology Institute have held these fellowships.
The first comprehensive study mapping the distribution and genetic diversity of invasive Eucalyptus insect pests in sub-Saharan Africa confirms the presence of five major foliage-feeding species in 14 countries. The results of this study have implications on the quarantine, future research and management of these pests on the continent and beyond.
Dr Joey Hulbert broke new ground when he became the first candidate at the Forestry and Agricultural Biotechnology Institute to complete a PhD study incorporating citizen science. Citizen science is an approach that involves members of the public as active participants in scientific research.
FABI technology unravels the genetics behind fungal genome evolution The RIPper is a bioinformatics tool for the for quantifying genome-wide RIP mutations in fungal genomes. The strength of this software lies in the automation of laborious techniques to study the mutation process called Repeat-Induced Point mutations (RIP). The RIPper applies these technique
With the increased availability in genome data, inferences regarding evolutionary relationships among taxa can now be performed on a genome-wide scale. But it is widely accepted that not all parts of such massive datasets support the same evolutionary hypothesis. Because of this, a group of researchers at FABI recently investigated the effect of this.
The use of genome data to characterize species and elucidate relationships, particularly between problematic taxa, has become routine practice in bacteria. Recently, researchers from FABI joined in an international effort to describe two novel genera and characterize these within the larger context of the important bacterial group Burkholderia.
A PhD student in FABI, Runlei Chang, has discovered and described 19 new fungal species from China as part of the research for his thesis. These fungi are all associated with conifer-infesting bark beetles and their mites and belong to well-known genera such as Ophiostoma and Leptographium.
Two research papers from FABI were selected as cover stories in two consecutive issues of the international journal, Plant Pathology. The journal is published by Wiley for the British Society of Plant Pathology.
Plastids play an integral role in wood formation, and yet they are routinely ignored in the study of xylogenesis in forest trees. Desre Pinard and Dr Eshchar Mizrachi have published a review highlighting the unique biology of plastids in wood, suggesting that a new type of plastid, the xylopast, exists.
Approaches for characterizing metabolic potential from genomic sequences have previously been predicted to be useful in the description of bacterial taxa. Dr Marike Palmer, has recently employed these approaches for identifying biological processes contributing to the divergence of bacteria with a variety of lifestyles.
Comparative genomics is shaping our notion of what fungal species are. Based on current data, these unique evolutionary units are separated from one another by boundaries that are porous under certain conditions. This affects our expectations regarding their population biology and evolution, and our strategies for recognizing and controlling them.
The Polyphagous Shot Hole Borer is an ambrosia beetle native to Southeast Asia. In 2017 this pest was detected in South Africa. Its presence has since been confirmed in all provinces except Limpopo. The beetle has a symbiotic relationship with the fungus Fusarium euwallaceae, which causes branch die-back and death of susceptible trees.
New Publications
Bose T, Dovey S, Brachmann A, Witfeld F, Begerow D, Kemler M, Roux J, Slippers B, Vivas M, Wingfield MJ. (2023) Retention of post-harvest residues enhances soil fungal biodiversity in Eucalyptus plantations. Forest Ecology and Management 532:120806.
10.1016/j.foreco.2023.120806
David Read, Bernard Slippers, Emma Steenkamp. (2022) Genomic characterization of a novel potyvirus infecting Barleria repens in South Africa. Archives of Virology
10.1007/s00705-022-05662-w
Bian C, Takashi H, Houbraken J, Visagie CM, Ban S, Yaguchi T, D'hooge E, Sklenár F, Kusuya Y, Hubka V. (2022) Reducing the number of accepted species in Aspergillus series Nigri. Studies in Mycology 102:95–132.
10.3114/sim.2022.102.03
David Read, Ronel Roberts, Goddy Prinsloo, Genevieve Thompson. (2022) Genomic and phylogenetic characterization of wheat yellows virus, a novel tenuivirus infecting wheat in South Africa. Archives of Virology
10.1007/s00705-022-05649-7
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 10(12):1-16.
Osborn RK, Castro J, Duong TA, Hulcr J, Li Y, Martínez M, Cognato AI. (2022) Symbiotic Fungi Associated With Xyleborine Ambrosia Beetles (Coleoptera: Curculionidae: Scolytinae) and the Imperative of Global Collaboration. Annals of the Entomological Society of America
10.1093/aesa/saac024
Pham NQ, Marincowitz S, Chen SF, Rodas CA, Wingfield MJ. (2022) Soil-borne Calonectria (Hypocreales, Nectriaceae) associated with Eucalyptus plantations in Colombia. MycoKeys 94:17-35.
10.3897/mycokeys.94.96301
Visagie CM, Yilmaz N. (2022) Along the footpath of Penicillium discovery: Six new species from the Woodville Big Tree Forest Trail. Mycologia
10.1080/00275514.2022.2135915
Chang J, Duong TA, Schoeman C, Ma X, Roodt D, Barker N, Li Z, Van de Peer V, Mizrachi E. (2022) The Genome of the King Protea, Protea cynaroides. The Plant Journal
10.1111/tpj.16044
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