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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

SRC visits the US as part of Global Leadership Preparation Programme
2012-06-07

The Student Representative Councils (SRC) of the University of the Free State’s (UFS) Bloemfontein and Qwaqwa Campuses will be travelling to the United States from 10-24 June 2012 on an intensive leadership development programme.

The Global Leadership Preparation Programme, initiated by the Vice-Chancellor and Rector, Prof. Jonathan Jansen, has been designed to ensure that South Africa’s next generation of leaders understand their unique place in a global context, the interconnectedness of global and local society and various possibilities for change.
 
The group of 36 students will be visiting Washington DC, Boston and New York.
 
“As a university we recognise that students who lead on campus must be prepared to also lead the country, which requires amongst others greater understanding of the impact and influence of global developments (social, economic, political) on nation states and campuses. This includes knowledge to deepen democratic participation and real representation – issues we know that often are contested in important student governance structures such as SRCs,” says Mr Rudi Buys, Dean of Student Affairs.
 
The group will be studying among others the impact, influence and limits of the United Nations in global leadership; the impact of transnational companies on economic policies of African countries; the impact of American universities on African leadership; the impact of international philanthropy on African development and the impact of American public institutions on learning among the disadvantaged: lessons for South Africa.
 
The programme complements and strengthens other leadership preparation programmes of the UFS, such as the Leadership for Change Programme and the Gateway College Programme – an intensive orientation programme for all undergraduate students. It will give students a competitive advantage in leadership over more local programmes and initiatives that seldom look beyond the campus, or even beyond the country, in preparing the next generation of leadership.
 
“We value this initiative by the university leadership to give us the opportunity to explore and spread our wings and gather as much knowledge as we can get to raise the bar in terms of student governance and leadership. The university is amongst the few in the country that sees the need to strengthen and develop its student leadership by exposing it and allowing it to understand its role in a global context. This is a chance that we take seriously and we intend to use it to the betterment of the institution,” says Bongani Ngcanga, President of the Central SRC.
 
“While we welcomed the initiative taken by the university to design this programme, the SRC questioned and debated heavily on the merits and real contribution of such a programme. Only on approval of the academic and development profile of the programme did we accept its merits and now are excited about the value thereof. This opportunity goes beyond the term of the SRC and will develop and equip us for the great positions we will hold in the future. I am looking forward to meeting influential lobbyists, profound academics and strong politicians,” says Richard Chemaly, SRC President of the Bloemfontein Campus.
 
Upon their return, the SRCs will set a new benchmark for future councils, raising the bar to that of internationally acclaimed student leadership. One of the objectives of the programme is to produce written, reflective statements about the learning that resulted from the trip and to start dialogues in order to improve student governance and governance as a whole. Workshops will also be presented for aspirant student leaders on leadership lessons learnt from an international perspective.
 
Members of the SRCs are covering part in the cost of the programme and generous contributions have also been received from outside the university.

Media Release
07 June 2012
Issued by: Lacea Loader
Director: Strategic Communication
Tel: +27(0)51 401 2584
Cell: +27(0)83 645 2454
E-mail: news@ufs.ac.za

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