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

UFS staff to get a minimum of 4,71 percent salary increase

2005-11-25

The University of the Free State (UFS) management and trade unions have agreed on a minimum of 4,71 percent salary increase for 2006 as well as a once-off non-pensionable bonus of R1200 payable in December 2005.

The agreement was signed today by representatives of the UFS management and the trade unions, UVPERSU and NEHAWU, in Bloemfontein.

Prof Niel Viljoen, Chief Director: Operations at the UFS and chairperson of the UFS Council’s representatives, and Prof Johan Grobbelaar, chairperson of the joint Union Forum, said: “The bonus is payable in December 2005 in recognition of the role that staff played during the year to promote the UFS as a university of excellence.”

He said the intention is to pass the maximum benefit possible on to staff without exceeding the limits of financial sustainability of the institution.
For this reason the negotiating parties reaffirmed their commitment to the Multiple-year Income-related Remuneration Improvement Model used as a framework for negotiations.

Proff Viljoen and Prof Grobbelaar said one of the factors that influence the model and therefore the negotiations is the level of subsidy the UFS receives from the government.

“As the state subsidy level is unfortunately not yet known, remuneration could vary several percentage points between a window of 4,71 and 5,5 percent. Should the state subsidy be such that the increase would fall outside this window then the parties will renegotiate.”

Proff Viljoen and Prof Grobbelaar said the R1200 bonus is payable to staff members who were in the employ of the UFS on UFS conditions of service on 21 November 2005 and who assumed duties before 1 October 2005. There are however some exceptions.

The agreement signed today also provides for restructuring funds of R752 000 to address partial backlogs in support services, including an increase in the medical allowance of 640 staff members.

The implementation date for the salary adjustment is 1 January 2006, but could be implemented on a later date due to logistical arrangements.

Proff Viljoen and Prof Grobbelaar said the UFS and unions could reach an agreement despite the declining phase in income and the generally more difficult financial environment in which universities operate.

Prof Grobbelaar said salary negotiations are never easy, but the model is an important tool. The model made it possible to tie up salary negotiations for November 2006. “This is unique for any higher education institution.”

Media release
Issued by: Lacea Loader
Media Representative
Tel: (051) 401-2584
Cell: 083 645 2454
E-mail: loaderl.stg@mail.uovs.ac.za
24 November 2005

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