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

Report card for UFS outlines major achievements

2005-02-04

Staff at the University of the Free State (UFS) have received above-inflation increases in remuneration averaging 18,2 percent since the year 2000, according to the Rector and Vice-Chancellor, Prof Frederick Fourie.

Delivering a keynote speech at the Official Opening of the UFS today, Prof Fourie gave a report card for the UFS which he said indicated significant progress in salaries and promotions as well as capital expenditure and infrastructure development on the campus.

“The aggregate extra earnings of staff (money in their pockets above inflation) from 2000 to 2005 amount to R75 million in salaries. This is the result of the hard work of all staff and we pay tribute to them,” he said.

Prof Fourie said that several categories of staff are better off than before the financial turn-around strategy was implemented in 2000 which aimed to make the UFS a financially sustainable campus.

The lowest paid workers and professors had received an additional structural correction, which gave professors at the UFS a 27% above-inflation increase (on total remuneration package) since 2000.

He said there had also been a dramatic increase in promotions to associate professor and full professor during the last 6 years.

From 1999 to December 2001, there were only 9 promotions to associate professor. From January 2002 to January 2005, there were 37 such promotions to associate professor, four times as many.

Regarding promotions to full professor, from 1999 to December 2001 there were 7 promotions. From January 2002 to January 2005, there were 31 promotions to full professor, more than four times as many.

“We have also created a new category of senior professor to give due recognition to the outstanding work of our leading academics in many fields,” Prof Fourie said.

The UFS has introduced numerous new and innovative learning programmes, together with an increasing number of community service modules which enhanced the UFS as a leader in service learning and helped to make it a university engaged with its surrounding community.

According to Prof Fourie the number of support staff had also grown along with the professionalisation of the support services.

He said management was aware that there still several challenges regarding staff overload and staff development but that these were being addressed

Media release
Issued by: Lacea Loader
Media Representative
Tel: (051) 401-2584
Cell: 083 645 2454
E-mail: loaderl.stg@mail.uovs.ac.za
4 February 2005

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