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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 launches a Small and Medium Enterprise (SME) Observatory, first of its kind in South Africa
2013-12-04

In cooperation with its partners, the Centre for Development Support at the University of the Free State (UFS), launched the SME Observatory at a function on the Bloemfontein Campus. This initiative is the first of its kind in South Africa. 
 
According to Willem Ellis, Director of the Centre for Development Support, this is a public-private partnership between the UFS, the International Labour Organisation (ILO) and the Department of Economic Development, Tourism and Environmental Affairs (detea), which aims to gather information for research on small and medium enterprises. “With this research we will endeavour to empower policy formulators to make the right decisions in terms of development on a local, provincial and national level,” Ellis said. 
 
Presentations and the panel discussion at the launch covered topics such as: 
  • How many enterprises can survive in a town?
  • Are entrepreneurs being set up for failure? 
  • Is SMEs the answer to the unemployment question? 
  • The cost of red tape: is SMEs being tied down? 

To demonstrate the applicability of the enterprise architect for issues relating to enterprise policy, as well as entrepreneurship strategies, it was decided to focus the pilot phase of the observatory on towns in the Free State. Dr Daan Toerien, research associate at the Centre for Development Support, and Johannes Wessels, Project Manager of the SME Observatory, compiled the report: “50 Towns in the Free State: What the Enterprise Architecture of these towns is telling us about Entrepreneurial Space.” 
 
In his presentation at the launch, Dr Toerien said: “The Enterprise Observatory’s prime goal is to present valuable facts and insights about enterprises in the domains it is observing.” He has developed a database that contains information on a large number of South African towns. He said that studying the enterprise architecture of towns will contribute significantly to inform the policy and strategy debate on LED and enterprise development. “These activities will add valuable data and insights to approach entrepreneurship in the Free State and, after the pilot phase, also in other provinces in South Africa. The Free State government, district and local municipalities, and the consultant fraternity serving them, should find the SME observatory’s activities of value,” he said. 
 
Wessels said that the SME Observatory of South Africa is dedicated to base its arguments on sound theory, science and applied research; to engage policy and decision makers on an evidence-based approach; operate in a politically non-aligned mode in order to mirror truthfully the impact of policies and decisions and to partner with policy makers, entrepreneurs, public administration, think tanks, research institutions, business representatives and NGOs on building networks and alliances to promote an open and competitive enterprise environment.

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