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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

Researcher finds ways to serve justice efficiently
2016-01-07

Description: Prof Monwabisi Ralarala  Tags: Prof Monwabisi Ralarala

Prof Monwabisi Ralarala tackled the serving of justice from a linguistic viewpoint.
Photo: Supplied

In 2012, local and international media was saturated with reports of the Eugène Terre’Blanche murder trial. At the judgment, Judge John Horn read a lengthy extensive document, of which three pages were dedicated to voicing his concern about how police officers distort statements in the process of translation. Considering the fact that statements are the entry points to the criminal justice system, Prof Monwabisi Ralarala’s attention was drawn to the negative impact such distortion had insofar as the administration of justice was concerned. Of the three PhD degrees conferred by the University of the Free State (UFS) Faculty of Humanities at the 2015 Summer Graduation, one was in Language Practice with Prof Ralarala’s name on it.

Prof Ralarala’s research interests in language rights, forensic linguistics, and translation studies led him to use the Terre’Blanche trial as the basis for his second PhD case study titled: Implications and explications of police translation of complainants' sworn statements: evidence lost in translation. The doctoral dissertation focused on police stations in the Xhosa-speaking community of Khayelitsha in Cape Town.

Language and the law

When the victim of a crime approaches the South African Police Services (SAPS), the requirements are that a sworn statement be taken. However, as a prerequisite, the narration needs to be translated into English.  “The process unfolds in this manner: the complainant or the person laying the charges speaks in a language that they understand, and then the police officers translate that information into English because English is still the de facto language of record,” explained Prof Ralarala.

In the process of translation, the original narrative is lost, and so is some of the evidence. “They [the statements] have to be packaged in a certain way, in the form of a summary. As a police officer, you have to discard all the original narrative and create another narrative which is in English,” added the Associate Professor and Institutional Language Coordinator at the Cape Peninsula University of Technology.

Evidence is the basis of any court case and, when it is translated by police officers who do not hold the credentials of professional translators, a problem inevitably arises.

Because police officers are not trained in translation, “Some of the statements are filled with distortions, changing of information all together. In some cases, one would come across a case which was initially an assault but then - through the change and transformation, re-narration, retelling of the story by someone else - it becomes a case of attempted murder.”

Considering that a statement determines a suspect’s fate, it becomes all the more important to ensure that accuracy is upheld.

His internal and external supervisors, Prof Kobus Marais and Prof Russel Kaschula from the UFS and Rhodes University respectively stated that his PhD work has been hailed as a gem by international scholars. “According to one international assessor, he has made an exceptional contribution to the humanities and social sciences in general and to the fields of linguistics and translation studies in particular.”

Reshaping the landscape

According to Prof Ralarala, there are huge gaps in the translated versions of statements which create a problem when a ruling is made. Some of the recommendations put forward in his dissertation to bridge that gap are:

• to review the language policy insofar as the criminal justice system is concerned. The languages we speak are official and constitutionally embraced, and they hold the same status as English, hence they need to be used in criminal justice processes;
• to revisit the constitution and review if the provisions made for the Nguni languages are implemented;
• to supplement paper and pen with technology such as tape recorders. Statements can be revisited in cases where a controversy arises;
• to deploy professional translators and interpreters at police stations;
• to design a manual for police officers which contains all the techniques on how a statement should be taken.
• to enforce constitutional  provisions in order to reinforce the language implementation plan in as far as African languages are concerned .

These recommendations serve to undo or eliminate any perceived injustices perpetuated and institutionalised by current linguistic and formal practices in South Africa's criminal justice system.

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