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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

UFS satisfied with proceedings of EFF National People’s Assembly
2014-12-17

The University of the Free State (UFS) is happy about another successful hosting of a political party; this time, the Economic Freedom Fighters (EFF). In the recent past (December 2012), the UFS hosted the African National Congress (ANC) with the same energy, support and selfless commitment as with the EFF.

“The fact that the EFF paid the required amount for the use of the university’s venues in full before the congress commenced, bears testimony to this. For the past two months, the UFS’s working team worked closely with the EFF’s logistics team to thoroughly plan for a smooth and successful National People’s Assembly,” says Dr Choice Makhetha, Acting Rector of the UFS.

The hard work and commitment invested in the preparation process paid off. The 1st EFF National People’s Assembly, held 13-16 December 2014 on the Bloemfontein Campus, was a huge success.

“It is with great excitement that I can report that all premises of the UFS have been left the way they were found on arrival; no damage to any property and no littering.”

“Thank you to the UFS staff members who worked selflessly on a daily basis: the cleaning staff who started very early in the morning and went home very late at night; garden staff who made sure that the grounds were exceptionally clean every day and the flowers bright; student volunteers who worked shifts of over 24 hours on the first day, making sure that EFF delegates were checked into residences; staff members at the Visitors Centre who were ready to share information about the university and provide support to EFF delegates; staff members at the Odeion (which served as media centre) who ensured that the national and international media houses were comfortable and that the media conferences ran smoothly; safety and security personnel who provided protection for all the people on campus and also ensuring safety of the buildings; the health and safety officers supported by our partners from ER24 emergency services; and the South African Police Services (SAPS). To the electricians, the plumbers and other colleagues from Physical Resources who assisted with any task, even beyond the call of duty, we say thank you. For all the support and extra miles travelled – we appreciate your passion for the work you do; you are all very important to us at the UFS.”

“As the University of the Free State, we would like to express our gratitude to the leadership of the EFF, the delegates, guests and partners, as well as the media houses. The level of discipline among delegates was impressive. The UFS staff members appreciate the level of professionalism and respect shown by the EFF leadership and delegates. All the best for the future!,” says Dr Makhetha.

The UFS will continue to host political parties, interest groups, associations and more in their diversity, provided there is availability of venues, events are held outside the academic period and payment is received well ahead of hosting. As a public institution of higher learning, the university has a responsibility to promote democracy and help deepen the principles thereof. A university is a perfect platform for differing views and diverse political formations to find expression.

“To the UFS community, thank you for the trust you showed in the working team as it prepared to host the EFF’s 1st National People’s Assembly. To Mangaung Metropolitan Municipality and the Free State Province – we appreciate the support. As the University of the Free State, we know we can always count on you!”, says Dr Makhetha.  

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