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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

From Architecture graduate to fashion sensation
2016-11-14

Description:Paul Whitehead  Tags: Paul Whitehead  longdesc=

Paul Whitehead, owner and founder of
Major John.
Photo: Supplied

Paul Whitehead never thought the small business he started in his hostel room at the University of the Free State (UFS) in Huis Abraham Fischer on the Bloemfontein Campus would develop into something of magnitude.

Paul, who completed his Honours degree in Architecture in 2015 at the UFS, is currently taking a gap year due to the rapid growth of his business. Major John started back in December 2012, with Love Warrior becoming Paul’s first outlet. In 2014 Paul started manufacturing his first series of timber bow ties and after that, sales started booming.

Supplier to 16 outlets in South Africa

“We currently supply 16 outlets throughout South Africa with a range of products such as timber bow ties, genuine leather suspenders and concrete and timber desk lamps, as well as other leather products,” Paul says.

He says that a new range of nine timber bow ties is launched every four months. “The timber is recycled and the fabric is handpicked from around the country to ensure quality, thus the bow ties are hand-crafted and unique,” Paul says.

Trust your gut feeling and believe in yourself

His main goal with the timber bow ties is to expand while the unique quality of the product is not compromised. “We are also in a process of expanding the range of our products in the exclusive market.”

Paul attributes his success to delivering excellent service to people who appreciate his pride and joy, his Major John collection. He encourages future entrepreneurs to listen to others’ advice, but to trust their own gut feeling and always believe in themselves.

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