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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

Mellon Foundation awards R10 million research grant to Trauma, Forgiveness and Reconciliation Studies
2015-02-20

Prof Pumla Gobodo-Madikizela, Senior Research Professor in Trauma, Forgiveness and Reconciliation Studies, and Dr Saleem Badat, Programme Director at the Mellon Foundation.
Photo: Johan Roux

Through her profound insight, vast experience, and unfaltering belief in humanity, Prof Pumla Gobodo-Madikizela, has secured a R10 million grant from one of the world’s most prestigious foundations funding human sciences research.

“This is one of the biggest grants that the Andrew W. Mellon Foundation has awarded to a university”, said Dr Saleem Badat, Program Director: International Higher Education and Strategic Projects at the Mellon Foundation. Prof Badat attended the press event that took place on 16 February 2015 on our Bloemfontein Campus.

UFS Trauma, Forgiveness, and Reconciliation Studies, spearheaded by Prof Gobodo-Madikizela, will manage the research project.

Prof Jonathan Jansen, Vice-Chancellor and Rector of the UFS, expressed great excitement “about this particular grant and the subject on which it focuses is so incredibly timely and germane to our own situation.”

Trauma, Memory and Representations of the Past: Transforming Scholarship in the Humanities and Arts

This new-found partnership between the Mellon Foundation and the UFS will enable a five-year research programme. The focus area of this initiative will be ‘Trauma, Memory and Representations of the Past: Transforming Scholarship in the Humanities and Arts’.

The research will pivot specifically around the question of how trauma is transmitted from one generation to the next. “South Africa lends itself to these questions,” Prof Gobodo-Madikizela said, “because we are now dealing with a generation of young people who were born after the traumas of the past.” These past experiences, though, are “passed on to the younger generation and become their own stories and narratives as if they themselves experienced the traumas directly.”

“This is an investment in how we can in fact create a different kind of community,” Prof Jansen said, “in which we eventually recognise each other – not by the accident of our skin, but by that elusive sense of a common humanity.”

Arts and theatre

Other aspects critical to this study are the inclusion of the arts and theatre. Many people have great difficulty in expressing their experiences of trauma in the spoken word. The arts and theatre provide an ideal platform to engage the public and stimulate conversation. As an example of the power these platforms possess, Prof Gobodo-Madikizela highlighted the success of the Johannes Stegmann Art Gallery – situated on the Bloemfontein Campus and curated by Angela de Jesus – in engaging the public in very productive ways.

Participants

Some of the artists, directors and scholars who will join in this project include:

• Lara Foot-Newton, Director/Playwright
• Sue Williamson, Activist Artist
• Angela de Jesus, Visual Artist/Curator
• Dr Buhle Zuma, Social Psychology Research
• Dr Shose Khessi, Social Psychology Research
• Prof Tamara Shefer, Women’s and Gender Studies
• Prof Kopano Ratele, Gender/Men and Masculinities
• Prof Jan Coetzee, Sociology of Developing Societies
• Prof Helene Strauss, Literary and Cultural Studies

New intellectual frontiers

“There is an aspiration in this proposal,” Dr Saleem Badat said. “We were born through this pain of colonialism and apartheid; we even went through the TRC. Our scholars in this country, our universities, should be at the forefront of this research. This is not research we can leave to the institutions in the north.”

Prof Gobodo-Madikizela agreed. “The overarching theme of this work is new knowledge production, focusing on the experiences in South Africa as experiences that can teach us something new.”

This will serve not only South Africa, but can also establish support for, and inform, countries facing similar dilemmas. In fact, “any part of the world in which genocide and murder and racism remains as legacies from the past,” Dr Badat said.

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