Ms Claudette Dewing

PhD student


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Primary Supervisor
Cobus Visagie

Co Supervisor
Emma Steenkamp
Brenda Wingfield
Neriman Yilmaz

The fungal diversity of grain related samples and animal feed in South Africa is unknown for many emerging farms. To address this problem, a basic understanding of the fungal communities associated with these samples are required. Foundational knowledge of the fungal communities associated with grain and animal feed is essential for successfully developing a more efficient way of monitoring fungi and their mycotoxin production. Current studies identifying the fungal communities within samples are based on the use of next-generation sequencing (NGS) technologies to target the ITS region. However, the ITS region is not equally variable in all groups of fungi and therefore identify fungi only to a genus level. This emphasise the need for secondary barcode markers to increase resolution at species level but also to provide confidence in the identification. This project will be complemented with three aims: (1) to develop a novel NGS approach to discover and explore biodiversity associated with grain related samples, (2) compare the culture-dependent and culture-independent approaches, including the shared fungal community and (3) asses NGS methods from (1) as a potential use for rapid diagnostics.

I began my journey with FABI in 2017 during my Honours degree in the Microbiology department at the University of Pretoria. My project was based on comparative genomics to identify and characterise genes involved in promoting host-specificity in agriculturally important Fusarium species from the American clade of the Fusarium fujikuroi species complex. My Masters degree (2018-February 2020) followed up on my Honours project and was completed with a distinction.

I am currently doing my Doctoral degree in Microbiology under the primary supervision of Prof. Cobus Visagie and co-supervision of Dr. Neriman Yilmaz, and Profs. Emma Steenkamp and Brenda Wingfield.

My Galeries


SASM conference 2018

Culture collection

SPOOF 2018

Social Club 2018/2019


FABI opens its doors for undergraduate students to “meet the scientists”

The CTHB Outreach Team at FABI hosted “Meet the scientists” information sessions for undergraduate students at the University of Pretoria on 26 and 27 February.

CTHB welcomes 20 students into its Mentorship Programme

Twenty undergraduate students will gain hands-on scientific research experience as mentees in the CTHB Mentorship Programme.

FABIans flexed their green fingers at 2019’s first tree planting session

A team of about 40 students spent the morning on 21 March replanting 1600 cuttings into potting bags at the FABI nursery on the University of Pretoria’s experimental farm.

FABI attends the Fungal Genetics meeting

Eight Fabians attended the Fungal Genetics meeting in Asilomar, California during March 2019.

Busy week in the field for the TPCP

In the week of 4 March, the TPCP had three different field trips to the KwaZulu-Natal, Midlands.

Mammoth inoculation trial of pine seedlings

Late in 2018, 14 FABIans banded together for the mammoth task of inoculating and disease assessment of 6,360 Pinus patula seedlings with 159 Fusarium circinatum isolates.


In March 2018 four FABIans won prizes at the South African Society of Microbiology Congress.

Export to RIS
Dewing C, van der Nest MA, Santana QC, Proctor RH, Wingfield BD, Steenkamp ET, De Vos L. (2022) Characterization of host-specific genes from Pine- and grass-associated species of the Fusarium fujikuroi species complex. Pathogens 11:858. 10.3390/pathogens11080858