Latest News Archive

Please select Category, Year, and then Month to display items
Previous Archive
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

UFS academic appointed as team doctor for SA Olympic Team
2012-03-22

 

Dr Holtzhausen’s appointment reflects well on the quality of exercise and sports medicine presented at the university.
20 March 2012

Dr Louis Holtzhausen, Head of the university’s Department of Sports and Exercise Medicine, has been selected by the South African Sports Confederation and Olympic Committee (Sascoc) as team doctor for the more than 300 athletes that will represent South Africa at this year’s Olympic Games in London.

“This is definitely one of the most important highlights of my career, in which I’ve worked with professional athletes and top sporting people,” says Dr Holtzhausen, a recognised South African academic in Sports Medicine.

“It is not only an honour to be appointed as team doctor for the South African Olympic Team. It is also a privilege to represent the UFS. The fact that Sascoc approached me reflects well on the quality of exercise and sports medicine that we present here at the university,” says Dr Holtzhausen.

Dr Holtzhausen says he has already worked with some of the athletes in the Olympic Team. These include members of the South African boxing team, the hockey team, as well as track and field athletes that have been preparing for the Olympic Games at the university’s High Performance Unit.

There is, however, hard work ahead for Dr Holtzhausen. His work will start before the team leaves for London in July. “I have to ensure that all the athletes are healthy and that everyone’s immunisation programmes are up to date. We also have to ensure that no athlete takes banned substances,” he says.

During the Games, Dr Holtzhausen will keep an eye on the optimal functioning of every athlete. “Anything that could hamper them medically will be sorted – whether it’s a broken ankle or a cold,” he says.

He will also see to it that medical services are available during the competition. Immediate medical assistance will be available, especially at high contact sports like boxing.

Dr Holtzhausen has also been team doctor for Team South Africa at the All Africa Games, the biggest sporting event in Africa. He was recently appointed as a member of the International Committee and Coordinator for Africa of the worldwide Exercise is Medicine project. This project proposes that exercise be used in the prevention of chronic disease in the general population, as well as in the treatment of people with existing chronic diseases. Dr Holtzhausen is also an honorary member of the South African Sports Medicine Association (SASMA). This membership is awarded to members of the medical and scientific community who make significant contributions to the advancement of sports medicine.

Dr Holtzhausen is a member of the Vice-Chancellor’s Prestige Scholars Programme.
The goal with the Prestige Scholars Programme is to select no more than 100 of the most promising young scholars (typically holding lecturer status) and to make substantial investments in their development towards the professoriate. A tailored, intensive programme of support has been designed which combines international placement working alongside leading scholars in the discipline of the prestige scholar, with intensive mentorship and support from within the university.

We use cookies to make interactions with our websites and services easy and meaningful. To better understand how they are used, read more about the UFS cookie policy. By continuing to use this site you are giving us your consent to do this.

Accept