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25 March 2022 | Story Leonie Bolleurs | Photo Charl Devenish
Prof Liezel Herselman Inuagural Lecture
At the inaugural lecture were from the left: Prof Danie Vermeulen, Dean of the Faculty of Natural and Agricultural Sciences, Prof Liezel Herselman, Dr Adré Minnaar-Ontong, Senior Lecturer in the Department of Plant Sciences and Subject Head of Plant Breeding, and Dr Molapo Qhobela, Vice-Rector: Institutional Change, Strategic Partnerships and Societal Impact.

Prof Liezel Herselman, Academic Head of the Department of Plant Sciences at the University of the Free State (UFS),) delivered her inaugural lecture on the Bloemfontein Campus this week (24 March 2022). The theme of the lecture was the ongoing battle against destructive cereal killers. 

With 28 years of extensive experience as a researcher, her work focuses on marker-assisted disease resistance breeding in wheat within a South African context. When she joined the UFS in 2004, Prof Herselman decided to apply her research expertise in marker-assisted breeding to the problems faced by wheat producers in the Free State and Northern Cape. The Free State is one of the major dryland wheat production areas in South Africa, while irrigation wheat is produced along the major rivers in the Northern Cape. 

Protection against fungal diseases

Concentrating specifically on Fusarium head blight (or wheat scab) and three rust diseases – leaf rust, stem rust, and stripe rust – she has done work to provide wheat plants with ‘tools’ to protect themselves against these fungal diseases.

According to Prof Herselman, there are many genes available in different wheat genotypes and related grass species that provide excellent protection against various races of these diseases. “Some of these genes provide protection or resistance from the seedling stage, while others provide resistance at the adult plant stage. We are thus aiming to combine as many of these genes as possible into a single wheat cultivar, without compromising yield and bread-making quality.”

She says the genes are combined by making crosses between resistant and susceptible cultivars or lines. Conventionally, through a time-consuming process, the incorporation of these genes is tested in the greenhouse and field by infecting plants with the disease to see which plants are resistant and which are not.

They can, however, follow the transfer of these genes to newly developed lines by applying molecular markers. Prof Herselman explains: “A molecular marker is a genomic fragment linked to the gene, which we can follow in the offspring we create from the crosses using different DNA techniques in the laboratory. This enables us to select new wheat lines that contain the highest number of resistance genes. The identified best lines are then used in further crosses and/or released as pre-breeding lines to commercial wheat breeding companies.”

Impact on food security

Her research has an impact on society by providing food security to both commercial and small-scale producers, as well as the end users of wheat (people buying bread and other wheat products). As researcher, it is also important for her to send out students to the workplace who can continue with this task in future.

Prof Herselman believes that when cultivars with fungal-disease tolerance or resistance are released and used by producers, it not only reduces the cost of spraying against diseases, but also increases yields by protecting the crop against fungal diseases. “We live in a world where the population is increasing daily, but land available for agriculture is not increasing and some areas are even lost due to urban development. Increasing yield in available production areas will thus have a positive impact on food security,” she says.

Besides contributing to the country’s food security, she takes pleasure in every aspect of her work. Although she misses the hands-on part of the work as academic head of the department and getting her hands dirty, she still enjoys managing the different research projects (from the conceptualisation phase to data analysis and publishing of results). The part she loves the most is to see the growth in her postgraduate students – from the moment they enter the laboratory for the first time until the day they walk out of the laboratory with their degrees. 

“It adds purpose to my life knowing that I have made a difference in a student’s life and equipped him or her with the necessary tools to be successful in the marketplace. Being able to share your knowledge is a gift, but with that gift comes a lot of responsibility as well. I am, however, up for the challenge,” concludes Prof Herselman. 

News Archive

New residences officially open
2013-03-06

 
Celebrating the official opening of the two new residences, were Vusumzi Mesatywa, Prime of House Outeniqua and Sherilyn Roelofse, Prime of House ConLaurês.
Photo: Johan Roux
06 March 2013

 

  Video clip (YouTube)

The one implies dreams of victory; the name of the other means ‘bringers of honey’ in the Khoisan language.

With these unique names, two new residences, House ConLaurês and House Outeniqua, will create new memories for generations of Kovsie students. The two residences were officially opened on the Bloemfontein Campus of the University of the Free State, bringing the number of junior residences on the campus to 19.

Celebrating the new addition to residence life, Mr Quintin Koetaan, Director: Housing and Residence Affairs, told residents of House ConLaurês and House Outeniqua that they were part of history. He told guests that the residences will provide accommodation for a new generation of students and encouraged residents to breathe life into their respective abodes.

“Nobody thought that two residences could be built in a year,” he said about the short time between the planning and opening of the residences in January this year. The two residences welcomed 250 students each, with male and female students living under one roof, but in separate units.

Prof Jonathan Jansen, Vice-Chancellor and Rector, praised Koetaan and his team, as well as the developers, saying they have done something completely different on the campus. He said the two residences will create a place which students can call home. “It will create a place not just to eat and sleep, but also to learn. It will create memories for many years to come.”

Mr Rudi Buys, Dean: Student Affairs, said House ConLaurês and House Outeniqua is much more than simply residences. “It’s about the university putting its heart out there, showing what can be done.” He told guests that representatives from other universities and the Department of Higher Education and Training have visited the UFS to see what is being done here.

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