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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

Two research chairs awarded to UFS women
2015-09-15


Prof Pumla Gobodo-Madikizela

Two professors at the University of the Free State (UFS) have just been chosen as recipients of research chairs by the National Research Foundation’s South African Research Chair Initiative.

The research chairs are a massive financial injection for research in each of the relevant disciplines – that of Profs Pumla Gobodo-Madikizela from the Centre for Trauma, Forgiveness, and Reconciliation Studies at the UFS, and Felicity Burt from the Department of Medical Microbiology in the Faculty of Health Sciences.

Profs Gobodo-Madikizela and Burt are two of 42 female researchers in the country receiving research chairs as an initiative to give due recognition to women in research.

Profs Hendrik Swart, from our Departement of Physics and Melany Walker, Director, Centre for Research on Higher Education and Development, each also holds research chairs by the NRF. A third research chair has also been granted to the UFS Department of Plant Sciences for the research in field crops.


Prof Felicity Burt

The work of Prof Burt’s research chair is to investigate medically significant vector-borne and zoonotic viruses currently circulating; to define associations between these viruses and specific disease manifestations that have previously not been described in our region, to increase awareness of these pathogens; to further our understanding of host immune responses, which should facilitate development of novel treatments or vaccines and drug discovery.

Prof Gobodo-Madikizela, who has received international recognition for her work on forgiveness studies, will use this research chair to investigate historical trauma within two African contexts – those of South Africa and Rwanda. She hopes to gain insight into the role that memory plays in the formation of the experience of trauma, and to bring about healing of the trauma.

Prof Corli Witthuhn, Vice-Rector: Research at the UFS, expressed her pride on the announcement.

“We are extremely proud of the national recognition these two outstanding women researchers received.  The UFS strives for research excellence, and the five current NRF research chairs, as well as two NRF A-graded researchers who are at the forefront of their disciplines globally, indicates our continued commitment to innovating, relevant, and high-impact research.  We are excited about the progress of the past two years to position the UFS as a national leader in research.”

 

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