Health-based Consumer Quality Traits in Tomato and Potato (EUSOL)

FABI News

News Archive

26 Jul 2024

FABI and FAO co-host a webinar on invasive plants affecting Africa’s natural and planted forests

FABIans Prof. Brett Hurley and Dr Mesfin Gossa recently co-organised and hosted a FISNA webinar focusing on invasive plants affecting Africa's natural and planted forests.

24 Jul 2024

FABIans pitch in to clear invasive woody plants on Mandela Day

An enthusiastic group of FABIans spent 67 minutes clearing invasive plants on the Innovation Africa @UP campus in celebration of Mandela Day.

19 Jul 2024

Mycological journal FUSE dedicates a volume in honour of Prof. Mike Wingfield

Prof. Mike Wingfield has been uniquely honoured for his significant achievements and scientific contributions to the field of Mycology, on the occasion of his recent 70^th birthday

19 Jul 2024

Well done Demissew!

Congratulations to Demissew Teshome on the successful completion of his PhD as part of the Eucalyptus Pine Pathogen Interaction (EPPI) research group.

18 Jul 2024

(ex)FABIans attend International Conference on Plant Pathogenic Bacteria (ICPPB) and Biocontrol 2024

FABIan, Prof. Lucy Moleleki, gave a keynote address at the recent International Conference of Plant Pathogenic Bacteria and Biocontrol Meeting.

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FABI Events

29 July 08h30

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Research Features

Archive

A new study reveals the presence of Mycotoxins in Eastern Cape maize in South Africa.

Eurotiales update: FABIans Prof. Cobus Visagie and Dr Neriman Yilmaz and their collaborators have published a review of recently described Eurotiales species, including the economically important Aspergillus, Penicillium, Paecilomyces and Talaromyces.

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.

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Dr Antoinette van Schalkwyk, Dr Boney Kuriakose, Erika Viljoen

Quality and wholesomeness of food and food products are two issues addressed prominently by society especially in relation to obesity (and atherosclerosis), the most important cause of cardiovascular disease and age-related diseases, such as cancer and diabetes. Module 2 is dedicated to screen tomato and potato for variation in levels and/or composition of antioxidants, other health-related nutraceuticals and minerals. This involves targeted analyses of (i) antioxidant metabolites, such as carotenoids, vitamin C and E, flavonoids and other phenolics, (ii) folate and (iii) minerals, such as Fe and Zn, as well as an untargeted screening for (novel) antioxidants. Genes/QTLs responsible for the formation and accumulation of these nutraceuticals will be mapped and screened. Subsequently the molecular and regulatory mechanisms underlying the biosynthesis, accumulation and degradation of these metabolites, using all available X-omics technologies, will be elucidated. The most relevant traits (metabolites) and genotypes will be identified for further analysis and the influence of development (fruit, tuber) and growing conditions assessed on these traits. Tomato and potato collections will be profiled for neutraceuticals and the most relevant traits and lines identified and confirmed for breeding.

For further information visit the EU-SOL webpage.

Workshops & Symposia

Archive

Workshop On The Biophysics Of Fungal Spore Dispersal

New Publications

Twiddy D, Fouché A, Akinsanmi OA, Fourie G. (2024) Biology and pathogenicity of fungi causing husk rot of macadamia in South Africa. European Journal of Plant Pathology :1-18. 10.1007/s10658-024-02915-z

Liu QL, Wingfield MJ, Duong TA, Wingfield BD, Chen SF. (2024) Diversity of Calonectria species from leaves and soils in diseased southern China Eucalyptus plantation. Fungal Biology 128:2007-2021. 10.1016/j.funbio.2024.07.007

Visagie CM, Yilmaz N, Allison JD, Barreto RW, Boekhout T, Boers J, Delgado MA, Dewing C, Fitza KNE, Furtado ECA, Gaya E, Hill R, Hobden A, Hu DM, Hülsewig T, Khonsanit A, Luangsa-Ard JJ, Mthembu A, Pereira CM, Price J-L, Pringle A, Qikani N, Sandoval-Denis M, Shumacher RK, Seifert KA, Slippers B, Tennakoon DS, Thanakitpipattana D, vanVuuren N, Groenewald JZ, Crous PW. (2024) New and Interesting Fungi. 7.. Fungal Systematics and Evolution 13:441–494. 10.3114/fuse.2024.13.12

Bhunjun C, Chen Y, Phukhamsakda C, Boekhout T, Groenewald J, McKenzie E, Francisco E, Frisvad J, Groenewald M, Hurdeal V, Luangsa-ard J, Perrone G, Visagie C, Bai F, Błaszkowski J, Braun U, D Souza F, De Q, Dutta A, Gonkhom D, Goto B, Guarnaccia V, Hagen F, Houbraken J, Lachance M, Li J, Luo K, Magurno F, Mongkolsamrit S, Robert V, Roy N, Tibpromma S, Wanasinghe D, Wang D, Wei D, Zhao C, Aiphuk W, Ajayi-Oyetunde O, Arantes T, Araujo J, Begerow D, Bakhshi M, Barbosa R, Behrens F, Bensch K, Bezerra J, Bilański P, Bradley C, Bubner B, Burgess T, Buyck B, Čadež N, Cai L, Calaça F, Campbell L, Chaverri P, Chen Y, Chethana K, Coetzee B, Costa M, Chen Q, Custódio F, Dai Y, Damm U, De Azevedo-Santiago A, De Miccolis-Angelini R, Dijksterhuis J, Dissanayake A, Doilom M, Dong W, Alvarez-Duarte E, Fischer M, Gajanayake A, Gené J, Gomdola D, Gomes A, Hausner G, He M, Hou L, Iturrieta-González I, Jami F, Jankowiak R, Jayawardena R, Kandemir H, Kiss L, Kobmoo N, Kowalski T, Landi L, Lin C, Liu J, Liu X, Loizides M, Luangharn T, Maharachchikumbura S, Makhathini Mkhwanazi G, Manawasinghe I, Marin-Felix Y, McTaggart A, Moreau P, Morozova O, Mostert L, Osiewacz H, Pem D, Phookamsak R, Pollastro S, Pordel A, Poyntner C, Phillips A, Phonemany M, Promputtha I, Rathnayaka A, Rodrigues A, Romanazzi G, Rothmann L, Salgado-Salazar C, Sandoval-Denis M, Saupe S, Scholler M, Scott P, Shivas R, Silar P, Souza-Motta C, Silva-Filho A, Spies C, Stchigel A, Sterflinger K, Summerbell R, Svetasheva T, Takamatsu S, Theelen B, Theodoro R, Thines M, Thongklang N, Torres R, Turchetti B, Van den Brule T, Wang X, Wartchow F, Welti S, Wijesinghe S, Wu F, Xu R, Yang Z, Yilmaz N, Yurkov A, Zhao L, Zhao R, Zhou N, Hyde K, Crous P. (2024) What are the 100 most cited fungal genera?. Studies in Mycology 108:1-411. 10.3114/sim.2024.108.01

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

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