Latest News Archive

Please select Category, Year, and then Month to display items

Prof Botma Visser takes on rust diseases threatening South Africa’s wheat

09 September 2025 | Story Martinette Brits | Photo Stephen Collett

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

Spotlight on Excellence in Teaching and Learning

2012-11-08

Dr Lynette van der Merwe and Mr Fred Mudanvanhu
Photo: Stephen Collett
08 November 2012

Dr Lynette van der Merwe from the Department of Basic Medical Sciences was announced as the winner of the Vice-Chancellor’s award for Teaching and Learning 2012. This award celebrates the excellent work done by academics in their classrooms. Mr Fred Mudanvanhu from the Computer Science and Informatics Department was named winner of the Excellence in Teaching and Learning award on the Qwaqwa Campus. They received their awards during the first Excellence in Teaching and Learning Week held on the Bloemfontein Campus from 29 October to 1 November 2012.

Hosted by the Centre for Teaching and Learning, the week was a showcase of scholarly teaching in various disciplines and innovation in teaching and learning practice. Some of the top academics at the university exhibited and presented their scholarly contributions in the form of presentations, short videos and electronic posters. This celebration of excellent work done by academics started on 24 October 2012, with the Excellence in Teaching and Learning Day on the Qwaqwa Campus.

Dr Francois Strydom, Director for the Centre for Teaching and Learning, said presentations made during Excellence in Teaching and Learning Week, especially those by the candidates for the Vice-Chancellor’s award for Teaching and Learning, demonstrated cutting edge, reflective scholarship.

He said Dr Van der Merwe’s innovative practises in teaching and learning stem from her Ph.D. research on Generation-Y learners and what their specific preferences are within the context of the Faculty of Health Sciences. “She illustrated how important it is for lecturers to reflect on the characteristics of the students that they are teaching to find the optimal balance between face-to-face interaction and the use of technology to engage the current generation.”

Mr Mudanvanhu was singled out for his research that contrasted the impact of different types of combinations of peer facilitated learning with the technology to improve students’ success.

Speaking at the teaching and learning awards function,Prof.Driekie Hay, Vice Rector:Academics, said the celebration of excellence indicates the pursuit towards developing the next generation of teachers, doctors, architects, scientists and researchers, to name a few. “The graduate that we educate today is the next president, the next Nobel prize winner or your grandchildren’s teacher.”

Back

Economic and Management Sciences

Education

Health Sciences

The Humanities

Law

Natural and Agricultural Sciences

Theology and Religion

Open Distance Learning

Business School

We use cookies to make interactions with our websites and services easy and meaningful. To better understand how they are used, read more about the UFS cookie policy. By continuing to use this site you are giving us your consent to do this.

Accept