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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

UFS policies want to help all students
2005-03-09

The death of Hannes van Rensburg, a first-year student from the JBM Hertzog residence, this past weekend, placed various aspects of student life in the spotlight.  Dr Natie Luyt, Dean:  Student Affairs at the University of the Free State (UFS), and the Student Representative Council (SRC) of the UFS explain which policies are in place to counter these practices.

At all tertiary institutions there are rules and policies to guide students and provide direction for certain behaviour and practices.  The same applies to the University of the Free State (UFS).

“At the beginning of the year the UFS provides every residence committee with a manual to establish a framework for meaningful and orderly relations within and among residences on the campus,” said Dr Natie Luyt.

However, it is one thing to set rules, but it is an impossible task to enforce all aspects thereof.  Policies currently in place include an alcohol policy, a policy on the induction of first years and a policy on banned practices in residence orientation. 

“The alcohol policy was compiled in cooperation with students and their input was constantly asked,” said Dr Luyt.  We also liaise on a continuous basis with residences and senior students to encourage the responsible use of alcohol, especially around activities like intervarsities and Rag. 

In the policy, recognition is given to the right and voluntary and informed choice of every individual to use alcohol on the UFS campus in a responsible way. 

Guidelines for the use of alcohol on campus include among others the following: 

Only authorised points of sale will be permitted on campus.  In this case it is the various league halls in most of the male residences on campus.

Alcohol will only be made available during fixed times and is not permitted in residence rooms.    

All alcohol-related functions are regulated and an application for a temporary alcohol license must be obtained from the Dean:  Student Affairs.     

The UFS obtained a liquor license in March 2004 which must be administered by senior leagues in various residences on campus.   Normal liquor license conditions and the county’s liquor laws apply.  Liquor can only be sold to members of the senior league (or special guests) and also to persons over the age of 18 years.  Liquor may not be used in public (outside the senior league) or on campus.    

The senior leagues may only be open three nights per week and within prescribed times.  No liquor could be used in any other place than the senior league halls.  Senior leagues could buy liquor from club monies generated by themselves. 

The right of senior leagues to serve liquor was suspended by the Rector and Vice-Chancellor the UFS, Prof Frederick Fourie, on Monday 7 March 2005 – pending an investigation of the recent events on campus. 

The policy on banned practices include among others that no swearing and shouting at first-years may take place, no first-year student may be targeted individually, no senior may enter the room of a first-year student without an invitation or permission from that first-year student and no senior under the influence of alcohol may have contact with first-year students. 

The induction of first-year students takes place by means of three functions, namely an information function (the introduction to the various facets and possibilities of the university system), an induction function (the first-year student becomes involved in various campus and residence activities) and a development function (the first-year student is motivated to take charge of his development potential). 

No first-year induction activity may commence before the residence committee’s contracting with the senior students is not completed.  This meeting is attended by the residence head and all senior students.  The induction policy, residence induction policy of first-year students and first-year rules are discussed.

The senior students sign an attendance list to show that he/she was informed about the policies.  A senior who does not sign, may not be involved with any induction session with first-year students.  

No physical contact is allowed during the conclusion of the first-year students’ official induction period.  The induction of first-year students as full members of the residence is a prestige event, presented by the residence committee.  No physical or degrading activities may take place. 

The Dean:  Student Affairs also has a daily meeting with the primarii of all the residences during the induction period.  This helps to monitor the situation and counter any problem behaviour or tendencies.

“Enforced behaviour – where a senior student forces a first-year student to do something against his/her own free wil – is not allowed.  Where there is any sign of this, it is met wortel en tak uitgeroei,” said Dr Luyt.

“In any group of people – whether it is a group of students or people at a workplace – there will always be those who will break the rules or those who would like to see how far they could push it.

The SRC, the UFS management and myself are and will stay committed to make each student’s life on this campus a school of learning and an experience which would be remembered for ever,” said Dr Luyt.

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