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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

New projects will enhance the infrastructure on our campuses

2011-02-04

Illustration:

The university's Main Gate in Nelson Mandela Avenue, as designed by The Roodt Partnership Architects.

A new entrance to the Main Campus, a high-performance centre, commercial gymnasium, rock-climbing wall, memorial garden for women and a botanical garden are but a few of the number of building and renovation projects that will take place at the Main Campus of the University of the Free State (UFS) in Bloemfontein. A number of projects are also being done on the Qwaqwa Campus.

On the Main Campus the entrance in Nelson Mandela Avenue is being adapted to match the university’s new corporative identity which was introduced last week. This project will be completed at the end of March 2011,

The creation of an environment conducive to the development of its students in the field of teaching, learning and research, as well as sports and culture is one of the main reasons why the UFS is renovating existing buildings and developing new infrastructure.

With the construction of a high-performance centre and commercial gymnasium, the university wants to create a work environment for its staff that will not only contribute to the cultivation of maximum work performance, but also to staff wellness. The centre with its foyer and administrative offices will furthermore consist of a health desk, university sports institute, sports sales, a spinning and aerobic centre, and dressing rooms. The total area will extend over 2114 m² and the construction will take approximately 18 months. This development will take place on the western side of the university’s Main Campus, directly opposite the Furstenburg Gate and next to the new student housing.

The UFS is also progressing well with other building projects which commenced last year. One of the projects is a new Education Building which is being constructed opposite the UFS Sasol Library. Upon completion this building will be used for the training of maths and science teachers in the Foundation Phase. It will include three classrooms for 100 students each and an auditorium for 225 students as well as an office block. The auditorium will also be used as a classroom. The building has been designed according to environmentally friendly principles to save water and use power effectively. It should be completed this year.

Planning for the construction of more student accommodation on the Main Campus as well as the Qwaqwa Campus is already well underway. On the Qwaqwa Campus, a residence with 200 beds is being constructed. This also includes a computer laboratory. According to the planning, this residence should be completed by the end of the first semester in 2011. Furthermore, four residences will be constructed on the Main Campus. These residences are in the planning phase.

In order to place technology within reach of Kovsie students and thereby empowering them, computer laboratories were installed at the respective residences. The computer laboratories will eventually make provision for approximately185 computers for student use. Proper security is also planned to safeguard the equipment.

Work to a new building for the Faculty of Health Sciences is also proceeding rapidly on the site where the vehicle pool and Hertz were previously used. This will include a lecture hall for 200 students, five venues for 100 students each, as well as offices. Students from the School for Medicine and Occupational Therapy will make use of these facilities.

The new building for the Faculty of Economic and Management Sciences between the Flippie Groenewoud Building and the Wynand Mouton Theatre is also coming along nicely.

On the university’s Qwaqwa Campus a new Education building is being constructed. This building will include a lecturing hall with 100 seats, four 50-seat classrooms, six offices, ablution facilities, a biology and science laboratory, as well as an information technology laboratory for 60 students.

In the meantime, existing buildings are being renovated on all the campuses. This includes, amongst others, improvements to the Architecture Building, the Biotechnology Building and the quarters for service workers on the Main Campus. Other improvements that have already been completed include the renovation of the Odeion’s foyer and the Callie Human Centre.

In future, students, staff and visitors to the UFS can also look forward to a rock-climbing wall at the Student Centre on the Thakaneng Bridge, a memorial park for women, residential accommodation within a sports environment, and a botanical garden.

Media Release
03 February 2011
Issued by: Lacea Loader
Director: Strategic Communication (actg)
Tel: 051 401 2584
Cell: 083 645 2454
E-mail: news@ufs.ac.za

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