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09 September 2025 | Story Martinette Brits | Photo Stephen Collett
Prof Botma Visser
Prof Botma Visser delivered his inaugural lecture at the University of the Free State, highlighting nearly two decades of research on wheat rust and global food security.

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

New guidelines to increase diversity in student residences at the UFS
2007-06-08

As from 2008, the University of the Free State (UFS) will implement new policy guidelines for student residences so as to increase diversity on the Main Campus of the UFS in Bloemfontein.

These new policy guidelines were approved by the Council of the UFS today (Friday 8 June 2007) after consultations with a range of stakeholders, especially students currently in residences, student leaders and student organisations, with inputs received from alumni and parents as well.

According to a statement by the Chairperson of the UFS Council, Judge Faan Hancke, and the Rector and Vice-Chancellor of the UFS, Prof. Frederick Fourie, the guidelines are based on an educational rationale with a definite educational objective.

“What the UFS seeks to do with these new policy guidelines, is to overcome the racial divides of the past and equip students in residences with the knowledge and skills to understand people from other cultures, appreciate other languages and to respect differences in religion but also economic background,” Judge Hancke and Prof. Fourie said in their statement.

“This will give students in UFS residences a distinct advantage over many other work seekers in South Africa, because the workplace today is a very diverse place with people of many backgrounds,” Judge Hancke and Prof. Fourie said in their statement.
They said the UFS wanted to establish a new model of residence life in which students will voluntarily embrace diversity and learn about diversity so as to add value to their educational experience in a residence.

In the late 1990s the UFS made the first attempt to integrate its residences which led to violent clashes between white and black students. A compromise agreement was reached based on freedom of association but this has over the years led to the current situation of largely white and largely black residences.

To support students during the implementation of the new policy guidelines, the management of the UFS will establish several mechanisms and programmes for students to empower them, to build their capacity and to facilitate a smooth transition to a new model of student life in the residences.

Judge Hancke and Prof. Fourie said the decision is another important milestone in the ongoing transformation of the UFS and in the provision of quality higher education for all UFS students, and that the decision had been taken in the best interests of the students.

“This is a very carefully managed transition to bring about a non-racial character to our student residences in line with the Constitution and the ethos of a democratic South Africa,” Judge Hancke and Prof. Fourie said.

How the new policy will work in practice

As from 2008, the new policy aims to bring about an important shift in the way first-years are placed in a residence. From 2008 first-year students are to be placed to achieve a minimum diversity level of 30% in each junior residence.

In senior residences a mix of approximately 50-50 will be the goal from 2008.
Residences will be responsible for placing 50% of first-years, which gives them the scope to increase diversity. The university’s accommodation service will place the other 50%. All these placements must occur in accordance with the educational rationale and the related diversity objective.

If a residence cannot reach the diversity objectives, the university will use the 50% of placements that it controls to achieve sufficient diversity in a particular residence.

Support mechanisms for students

According to Dr Ezekiel Moraka, Vice-Rector: Student Affairs, students in the residences will not be left on their own to deal with the issues of diversity. The management of the UFS has identified several important areas where the process may need support, especially in the early stages of implementation. Students and student leadership will be involved in the further design and finalisation of the implementation details.

These areas where support will be finalised are the following:

  • Providing properly trained and qualified personnel (such as live-in wardens, residence heads etc.) to supervise the implementation of the policy on a 24-hour basis;
  • Ongoing orientation workshops for all students in residences to deal with diversity in a mature way;
  • Support to deal with language issues, including interpreting services so that language rights of all students can be respected; and
  • Assistance with the review of residence governance, administrative and other procedures that have been used in residences up to now.

“There can therefore be no doubt that the management is committed to the well-supported and successful implementation of this new policy and to giving the best possible education to all our students,” Judge Hancke and Prof Fourie said.

Media release
Issued by: Lacea Loader
Assistant Director: Media Liaison
Tel: 051 401 2584
Cell: 083 645 2454
E-mail: loaderl.stg@ufs.ac.za
8 June 2007
 

 
 

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