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The impact of cereal killers on food security

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 to get transformation plan for African context

2005-02-04

The University of the Free State is to draft a comprehensive Transformation Plan to give impetus to the process of making the UFS an inclusive, non-racial, non-sexist, multi-cultural and multi-lingual university within the African context.

Delivering a keynote speech at the Official Opening of the UFS today, the Rector and Vice-Chancellor, Prof Frederick Fourie, said the Transformation Plan would include aspects such as employment equity, institutional culture, academic excellence, and other elements.

He added that another aspect to be considered in the academic element of the Transformation Plan was the issue of the African context, of a university for Africa, in Africa, of the African university.

According to Prof Fourie, the best way of understanding the role of the UFS in Africa and for Africa, is for the university to become a truly engaged university that bridges the gap between the institution and the community. He said the UFS had for more than 10 years been at the forefront of transformation in higher education, and had gone through several phases of transformation. However the UFS needed to embark on a new phase of transformation which would be guided by a comprehensive Transformation Plan.

The Transformation Plan would be the result of an inclusive consultation process involving staff, students, alumni and other stakeholders. It would also be based on a review of current policies and practices.
The process would be led by a Transformation Plan Team, co-ordinated by the Vice-Rector: Academic Operations, Prof Teuns Verschoor, and the Vice-Rector: Student Affairs, Dr Ezekiel Moraka.

“Obviously we should also not underestimate the complexities of transformation and of building a new society, given our complex history and the legacies of poverty, underdevelopment, colonialism and apartheid.

“We must consider support for staff involved in these transformation steps, including appropriate staff development, capacity to support transformation processes, as well as flexible and supportive administrative practices,” Prof Fourie said.

He said the UFS management understood the urgency of transformation in the current democratic South Africa and the changing global environment and appealed to staff and students to participate fully in drafting the Transformation Plan for the UFS.

“Transformation at the UFS has been and will continue to be a process with many facets that seek to enhance excellence in all spheres of university life, and is much more than merely ensuring employment equity,” he said.

Prof Fourie said: “We have reached a historic moment in the life of the UFS where innovative thinking and bold steps yet again are necessary because failure is not an option.”

Media release
Issued by: Lacea Loader
Media Representative
Tel: (051) 401-2584
Cell: 083 645 2454
E-mail: loaderl.stg@mail.uovs.ac.za
4 February 2005

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