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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 academic delivers inaugural lecture on challenges confronting political science in the 21st century
2012-10-12

Prof. Hussein Solomon.
Photo: Stephen Collett
12 October 2012

This week Prof. Hussein Solomon, Senior Professor in the Department of Political Studies and Governance delivered his inaugural lecture on the Bloemfontein Campus of the University of the Free State (UFS).

In his lecture, “Challenges confronting political science in the 21st century, A South African perspective”, Prof. Solomon explored five challenges to academic political science in general and to South African political scientists in particular.

The challenges include the need to localise international relations theory with an emphasis on the emancipatory dimensions; exploring the nexus between technology and politics; incorporating political anthropology into mainstream political science syllabi; rising to the challenge of governing Africa’s cities; and the dangers of over-specialisation in an era that demands the use of a broader academic lens.

According to Prof. Solomon, political science has come a long way from those heady days in 1950 when Lasswell could confidently state that politics was about who gets what, when and how.

“Indeed, the world of 2012 scarcely resembles the world of 1950. Immanuel Wallerstein was correct in his assessment that the modern world system is coming to an end. As political scientists, we need to interrogate our existing knowledge constructs in relation to this rapidly changing reality. We need to indigenise international relations theory and emphasise creating an emancipatory and counter-hegemonic discourse.

We need to explore the nexus between technology and politics to deepen our democracy by empowering the margins in our societies. We need to embrace political anthropology as we strive to understand non-Western forms of governance. We need to use these understandings of traditional societies as we create hybrid forms of urban governance that stress inclusivity as we overcome the politics of identity and difference. We need to heed the call of De Tocqueville and create a new political science to understand the new times by supplementing disciplinary insights with those from other disciplines. In doing so, political science will once more regain its relevance to humanity in the twenty-first century,” Prof. Solomon said.
 

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