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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.

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Farewell to the Class of 2015
2016-12-07

Description:Class of 2015 Tags: Class of 2015 longdesc=


Some of the students from the Class of 2015

The First Year Leadership for Change programme (F1 L4C) hosted its final graduation ceremony for the class of 2015.

Launched in 2010, the programme gives first-year students international exposure to top universities across the world, providing invaluable opportunities to explore the concepts of transformational leadership, global citizenship and social cohesion.

The 32 students and six staff mentors visited various universities which included, New York University, Rutgers University, Edmonds Community College and Washington University ­- all in the US, Mahasarakham University in Thailand and Vrije University in the Netherlands.

Making a change through critical thinking

Pura Mgolombane, Dean of Student Affairs at the University of the Free State (UFS), challenged the students to think about making a change and to critically think about themselves and how they see the world.

The graduation function, which took place on 16 November 2016, saw the class of 2015 come together to celebrate their accomplishments over the year and allowed the class representative, Tammy Fray, to reflect on all of the valuable lessons learnt.

Special announcement to end the evening

Throughout the evening, representatives from previous years testified to the impact the programme had on their personal development, leadership pathways and their learning communities. The audience was charmed with a song by Stefan Lotter, current chair of the F1 Fellowship Association, and the Delicate Artistry Band.

The evening ended with a special word by Prof Nicky Morgan, acting Rector of the UFS, who convinced by alumni’s testimonies, acknowledged what the exceptional programme had delivered over the past six years. Although it was at the end of its lifetime, he said that in review, ideas emerging from the programme should be explored to give birth to something new.  Watch this space!

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