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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 academics will be sorely missed
2013-04-02

  

Prof Andrew Marston and Prof Bannie Britz
Photo: Supplied
02 April 2013

The staff and students of the University of the Free State (UFS) are deeply saddened by the recent passing in Bloemfontein of two of the university’s most esteemed and renowned academics, Prof Bannie Britz and Prof Andrew Marston.

Prof Britz was the Head of the Department of Architecture from 1992 to 2000. He was renowned in his field, winning numerous prizes for Architecture, including the Gold Medal for Architecture from the South African Academy of Arts and Sciences.

“As professional architect and urban designer, Prof Britz was a much awarded architect who received numerous award of merit from the South African Institute of Architects for buildings erected in South Africa over the years,” said Martie Bitzer, Head of the Department of Architecture.

Apart from his acclaim elsewhere, Prof Britz also played a major role in the day-to-day activities of university’s staff and students. He was responsible for the design of the many walkways on campus and the refurbishment of the Main Building on the Bloemfontein Campus. For the many contributions in his field, Prof Britz was awarded an Honorary Doctorate by the UFS in 2007.

Prof Andrew Marston, a specialist in natural product chemistry and methods associated with the isolation and analysis of medically important chemicals from plants, was appointed from Geneva, Switzerland in 2009 under the UFS Strategic Cluster for Advanced Biomolecular Research.

He obtained a B-rating from the National Research Foundation (NRF) in 2011, and was consequently appointed as a senior professor in die UFS Senior Professor Programme. “He has made valuable contributions to the UFS in terms of teaching and postgraduate supervision, as well as research. In his short stay at the UFS, he already co-authored more than ten papers in international chemistry literature,” said Prof André Roodt, Head of the Department of Chemistry.

His research group was part of a multilateral agreement in the European Union (EU) with a number of African and three European universities. He obtained new research funding from the Seventh Framework Programme of the EU for the Building Sustainable Research Capacity on Plants for Better Public Health in Africa project, from the Norwegian Research Council for bioprospecting and the isolation and structure determination of compounds from plants and algae, and from the South African Rooibos Tea Council.

The memorial service for Prof Britz took place on Friday 5 April 2013 in the Berg-en-Dal Dutch Reformed Church in Bloemfontein. The service for Prof Marston took place in the Trinity Church, Charles Street, Bloemfontein.

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