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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

Conference on religion and reconciliation
2011-07-25

 

At the conference were, from the left, front: Dr Frank Chikane, President of AFM International; Dr Mathole Motshekga, Chief Whip of the ANC; at the back: Rev. Maniraj Sukdaven, Head of our Department of Religion Studies; and Dr Alan Boesak, connected to our International Institute for Studies in Race, Reconciliation and Social Justice, as well as a minister in the United Reformed Church.

In recent times, reconciliation has mainly been politically driven, Dr Alan Boesak stated during a conference on religion and reconciliation. He was one of a number of prominent academic leaders from various religions who participated in the conference: Exploring religious understanding for reconciliation.The conference was presented by our Faculty of Theology and the International Institute for Studies in Race, Reconciliation and Social Justice at our university this week.

According to Dr Boesak, a theologian connected to our International Institute for Studies in Race, Reconciliation and Social Justice, reconciliation means much more than simply former enemies no longer attacking or killing one another; they also have co-exist with a positive attitude towards one another.
 
Speakers from, amongst others, the Christian, Jewish, Baha’i, Rastafarian, Islam and Buddhist religious communities shared their views on reconciliation with one another.Most of these speakers referred to the special value of humankind in each religion. A person’s life has a supernatural dimension, which ought to play a major role in the way in which people treat one another.
 
Dr Frank Chikane, President of AFM International, as well as a speaker at the event, stated that the religious community should and had to be more active in discussions about reconciliation.“If religious leaders do not talk about current issues, all kinds of voices with distorted perspectives will be heard instead,” Dr Chikane added.
 
Reconciliation can only truly take place if the contribution of each group in society is taken seriously. Apart from the high premium placed on rights in society, duties that have to be fulfilled should also be emphasised. Bishop Malusi Mpumlwana from the Ethiopian Episcopal Church is of the opinion that this sense of duty should be established in people’s frame of mind. Adv. Antony Osler pointed out from a Buddhist perspective how important it was to deal with reconciliation by living up to its principles.
 
Rev. Maniraj Sukdaven, Head of our Department of Religion Studies, is very satisfied with the high quality of the contributions during the conference.

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