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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 launches history book
2007-02-02

 

Attending the launch of the UFS history book were, from the left: Prof Stef Coetzee, Prof Francois Retief, Prof Wynand Mouton, Mr Pieter Cox (Chairperson on Sasol) and Prof Frederick Fourie (Rector and Vice-Chancellor of the UFS). Profs Coetzee, Retief and Mouton are former rectors of the UFS.
UFS launches history book
 
The University of the Free State (UFS) today launched its history book titled, From Grey to Gold, on the Main Campus in Bloemfontein.
 
“The history of the UFS is one of faith, hope, struggle and determination. The book tells a fascinating story that stretches over a 100 years. It is divided into five main phases, which tells about the growth of the UFS from a poor Free State community to a mature university. Interesting stories about student days, sport, rag and hostel activities are included in each phase,” Prof Frederick Fourie, Rector and Vice-Chancellor said during the launch of the book.
 
“One cannot know where you are going if you don’t know where you are coming from. You have a clearer idea of the issues facing an institution if you know the history. A book like this one is also an important source of reference for staff on the campus,” said Prof Fourie.
 
The first research for the book was done from 1999-2003 by Prof Leo Barnard from the Department of History and a team of researchers. They also compiled the first manuscript. 
 
During the last three years, Prof Fourie was closely involved with the writing of the final phase and finishing off the history book project. “It was an honour to be so closely involved with the story of the UFS because now I have a better understanding of the institution, its people, its culture and its way of thinking. For any rector of a university, such an understanding of its institution is a requirement,” Prof Fourie said.
 
The book is partly sponsored by Sasol. During the launch of the book, Mr Pieter Cox, Chairperson of Sasol said the company and the UFS have been partners for 57 years. “Both Sasol and the UFS are striving for excellence – Sasol for excellence in technology and the UFS for excellence in education,” said Mr Cox. 
 
“It was an easy decision when the UFS approached Sasol for financial support of the history book. Its a formidable piece of work, something Prof Fourie and the UFS can be proud of,” said Mr Cox.
 
The book consists of more than 500 pages with hundreds of photos and a wide range of supplements of office-bearers, awards and achievements (including national and sporting colours). A timeline framework, putting the history of the UFS in context with the history of the Free State, South Africa and of the world, is also included.
 
Besides the supplements, the history book also tells the story of amongst others the establishment of the UFS; the role of its founding fathers; black pioneers of transformation; the establishment and development of academic departments and faculties; student numbers; pioneers and trends in research; academic entrepreneurs; campus issues and campus politics; interesting facts and stories about student life (rag, intervarsity and cheerleaders, sport and the Springboks, hostel traditions); the admission of black students and anguish about race; language and culture; the development of the Main Campus; the Tickey and the Banana and much more.
 
Emphasis is placed on a very high level of quality. “It is not every day that the university becomes hundred years old and the institution will be measured by the quality of the book. We cannot say the UFS is a university of excellence if the book does not reflect that,” Ms Edma Pelzer, Director: Physical Resources and Special Projects said. Ms Pelzer managed the project as part of the last mentioned part of her portfolio.
 
The search for photographs was an important aspect of the book and it was a big task to find photographs and write captions. It took almost a year to translate and prepare the English edition and almost ten months to ensure the accuracy thereof, especially to correctly translate the typical Free State and UFS terminology and naturally to complete the English manuscript’s layout and proofreading. In the mean time the cover pages were designed and in September 2006 the manuscript went into the final print process. The Afrikaans title is: Van Sink tot Sandsteen tot Graniet.  
 
The cost of the book is R380 per copy. Those who already ordered the book will soon receive their copy. Orders can be placed by contacting Mr Dawid Kriel at UFS Marketing on 051 401 3409 or on the UFS web site at www.ufs.ac.za. The book is also available at Van Schaik Book Store on the Thakaneng Bridge, UFS Main Campus and at Fascination Books in Mimosa Mall, Bloemfontein.
 
Media release
Issued by: Lacea Loader
Media Representative
Tel: (051) 401-2584
Cell: 083 645 2454
2 February 2007

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