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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

Doing what must be done – Fourth Reconciliation Lecture by Colm McGivern
2015-03-17

Colm McGivern
Photo: Johan Roux

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Fourth Reconciliation Lecture: Audio

McGivern: speech (pdf)

The UFS Annual Reconciliation Lecture brings leaders, scholars, and the broader community together in a shared vision for social change and conflict transformation. This event is organised by Prof Pumla Gobodo-Madikizela, Senior Research Professor in Trauma, Forgiveness and Reconciliation Studies. In 2012, Nadine Gordimer, Nobel Prize Laureate for Literature, was the first speaker to deliver the lecture. This year, at the Fourth Annual Reconciliation Lecture held on the Bloemfontein Campus, Colm McGivern, Director of the British Council in South Africa, continued the legacy.

Doing what must be done
'I get down on my knees and do what must be done
And kiss Achilles' hand, the killer of my son.'
(Ceasefire by Michael Longley)

Using this poem to powerful effect, McGivern showed what reconciliation asks of each and every citizen: to do what must be done. “I think that peace and reconciliation are mutually dependent,” he said. “You can’t maintain one over the long run without attending to the other.”

South Africa’s history has tracked along a similar path to that of Northern Ireland. “And lessons from other places can be powerful and instructive,” McGivern said. Sometimes reconciliation needs a focal point for people to clearly see its power, as Madiba has for South Africa. But at other times, reconciliation needs everyday citizens to “kiss Achilles’ hand’”.

McGivern mentioned Candice Mama and her family, who  have recently forgiven Eugene de Kock,. Or as Gordon Wilson did after his daughter, Mary, died holding his hand in the 1987 Enniskillen bombing in Ireland. In a TV interview mere hours later, Wilson forgave the killers of his daughter, and  hope rippled across Ireland.

Learning from others
“People’s capability,” McGivern said, “to reconcile their own differences, however stark, can be boosted by learning from others in other places, internationally or perhaps just beyond their own identity group.” A powerful truth now being pursued in a joined initiative between the British Council and Teaching Divided Histories.

As an example, McGivern referred to the short film, ‘In Peace Apart’ where one Catholic and one Protestant girl decide to swop school uniforms. Harnessing the potential of moving images and digital media, the initiative enables teachers to explore contentious issues of history and identity in the classroom. This international field of conflict education draws lessons “from activities in Sierra Leone, India, Lebanon, and, of course, South Africa.”

Resuscitation of the national spirit of magnanimity
Here in South Africa, Archbishop Desmund Tutu has “called for a resuscitation of the national spirit of magnanimity and common purpose”, McGivern quoted. In the book, 80 Moments that Shaped the World, South Africa appears four times, McGivern pointed out. And as Archbishop Tutu wrote in the foreword of the book, “no act is unforgivable; no person or country is beyond redemption and the world needs more people to reach out to one another.”

 

For more information or enquiries contact news@ufs.ac.za.

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