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

State of our campuses: UFS extends vacation as from 28 September until 7 October 2016

2016-09-28

In solidarity with the call for free education for the poor and missing middle, a discussion was held with the University Management Committee this morning, in consultation with the student leadership, and after careful assessment of operational matters on all three campuses of the University of the Free State (UFS), we agreed upon the following:

1.    All classes, tests, and assignments will be suspended until Friday 7 October 2016. This means that the university will close on Wednesday 28 September 2016 for an extended vacation until 7 October 2016. The academic programme will resume on Monday 10 October 2016.

2.    This will allow the entire university time to demonstrate solidarity, in collaboration with student leadership, academic and support staff, and the broader community in support of free higher education for the poor and missing middle.

3.    The administration of the university will continue on Thursday 29
September 2016, and staff will have access to their offices to plan the additional academic support for students, to consider the re-scheduling of the academic calendar, to engage with the Department of Higher Education and Training in relation to the students’ demands, and to continue with support services during the extended vacation.

4.    The university management and student leadership will also, over the next three days, engage in discussions to provide for a platform that is conducive to continued collaboration between students and the university leadership.

5.    The suspension of tests, classes, and assignments will also allow time for a social compact and code of ethics for protests to be agreed upon and signed between student leadership and the university management.

In respect of the Qwaqwa Campus, some protesting students yesterday intimidated others and forcibly removed staff, as well as security personnel. Today, university property was burnt. In view of our commitment to the safety of staff, students, and university property at the campus, it was necessary to evacuate the campus – including residences – with immediate effect. However, residential students are allowed to remain on campus until midday tomorrow (28 September 2016).

The university leadership again wants to emphasise its support for a national policy of free education for the poor and missing middle and stresses its support for peaceful protests on matters that are of concern to our students.

We further understand the frustration of many students and their parents/guardians at the closure of the campuses and the impact it has on academic staff, staff in the Support Services, our security personnel, teaching, learning, projects, assignments, lectures, tests, fieldwork, and the academic calendar in general, and commit to do all in our power to ensure the delivery of quality education to all our students under difficult circumstances.

Released by:
Lacea Loader (Director: Communication and Brand Management)
Telephone: +27 51 401 2584 | +27 83 645 2454
Email: news@ufs.ac.za | loaderl@ufs.ac.za
Fax: +27 51 444 6393

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