Latest News Archive

Please select Category, Year, and then Month to display items

Prof Botma Visser takes on rust diseases threatening South Africa’s wheat

09 September 2025 | Story Martinette Brits | Photo Stephen Collett

Safeguarding one of the world’s most vital staple foods was at the heart of the inaugural lecture delivered by Prof Botma Visser, Professor in the Department of Plant Sciences at the University of the Free State (UFS), on Wednesday 3 September 2025. Prof Visser shared insights from nearly two decades of research into wheat rust – a devastating crop disease that threatens both South Africa’s harvests and global food security.

“Wheat production in South Africa is threatened by three fungal pathogens that cause rust disease on the crop. Understanding the factors that contribute to virulence on locally grown cultivars is crucial to ensure continued wheat production,” said Prof Visser.

The fight against evolving wheat rusts

For the past 17 years, Prof Visser’s research has focused on the genetic structure of rust populations and the risks they pose to food security. His work has shown that these populations are dynamic and constantly changing due to genetic mutations within existing races, as well as the introduction of new races into South Africa.

“Computer modelling showed that rust can spread over vast distances by prevailing winds. During the 20th Century, at least four Southern African stem rust races managed to move across the Indian Ocean from Southern Africa to Australia. South Africa, in turn, received multiple new races from mid-Africa across Zambia and Zimbabwe, without any means of stopping these introductions,” he explained.

To respond to this challenge, his team recently implemented MARPLE (Mobile And Real-time Plant disEase) diagnostics using fourth-generation nanopore sequencing technology. This approach allows the rapid characterisation of fungal isolates, specifically targeting genes linked to fungicide resistance and virulence.

“This work,” Prof Visser noted, “is part of an effort to safeguard global wheat production.”

His research is a collaborative effort with Prof Willem Boshoff (Department of Plant Sciences, UFS) and Dr Tarekegn Terefe (Agricultural Research Council – Small Grain, Bethlehem). Together, their work has positioned the UFS as an internationally recognised centre of excellence in wheat rust research.

About Prof Botma Visser

Prof Botma Visser obtained his BSc in Botany and Microbiology (1988), BSc Honours in Microbiology (1989), and MSc in Botany (1993) at the University of the Free State, where he also completed his PhD in Botany in 2004.

His career spans more than 18 years of research into wheat rust pathogens, combining annual surveys, race pathotyping, molecular genetics, and cutting-edge sequencing technologies. His expertise has not only advanced understanding of rust population dynamics in South Africa but also contributed to global collaborative studies on crop disease.

News Archive

Juan Odendaal on his way to World Champs

2015-03-23

Juan Odendaal
Photo: BOOGS Photography, Andrew McFadden

UFS’s athletes with disabilities are currently excelling in cycling and athletics.

The UFS Para-cyclist, Juan Odendaal, will soon make his debut for South Africa at the 2015 Union Cyclist International (UCI) Para-cycling Track World Championships in Apeldoorn, The Netherlands, from 26-29 March 2015.

The Championship event will provide an excellent foundation for re-building the international competitiveness of South Africa’s Para-cycling track team in the build-up to Rio 2016. In a situation where the UCI has hosted relatively few international track competitions over the past three years, the 2015 World Championships will serve as a stepping-stone to the 2016 grand season, when it is expected that the country’s top riders will reach their peak competitive condition.

As the youngest member of the South African team, Odendaal will use the opportunity of competing in the individual time trial and team sprint events to build a platform for an international career will certainly span many years to come.

Another UFS student, Musa Simelane, are excelling and was chosen for the SA Wheelchair Rugby tean, known as the "Wheelboks". They will compete in the 2015 World Wheelchair Rugby Challenge in London in October and after that head to Japan to compete in the 2015 Asia Oceania Championships.

On a local level, earlier in March this year, other UFS athletes with disabilities also performed well on the athletics track.

Blind athlete and member of the Bloemfontein Campus Student Representative Council (SRC), Louzanne Coetzee, also had a good 1500m race in the beginning of March when she qualified easily for the World Championships, which will take place in Toronto, Canada, later this year. Coetzee and her guide, Rouxné Jacobs, set up a time of 5:45.86, which is well under the required standard of 6 minutes.

The other blind UFS athlete, Danie Breitenbach, alongside his guide Marius Wessels, broke his own national record for the 800m again on Friday 6 March 2015. In November 2014, Breitenbach’s record stood at 2:15.17. This record now stands at 2:13.57. Chances now are that Breitenbach will reach his goal of running the 800m under 2:10 at the Nedbank National Championship for the Physically Disabled at the end of March 2015.

The other Kovsie stars who will be participating at the Nedbank National Championship for the Physically Disabled are as follows:

Athletes:
• Dineo Mokhosoa
• Louzanne Coetzee
• Danie Breitenbach
• Juanré Jenkinson
• Diederich Kleynhans
• Jacques de Bruyn

Swimmer:
• Johann van Heerden

Back

Economic and Management Sciences

Education

Health Sciences

The Humanities

Law

Natural and Agricultural Sciences

Theology and Religion

Open Distance Learning

Business School

We use cookies to make interactions with our websites and services easy and meaningful. To better understand how they are used, read more about the UFS cookie policy. By continuing to use this site you are giving us your consent to do this.

Accept