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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 breakthrough on SRC

2005-06-10

The Council of the University of the Free State (UFS) today unanimously approved the establishment of a Central Student Representative Council (CSRC) to ensure the democratic participation of students at its three campuses in the governance of the university.

In a major breakthrough and transformation step for student governance, the Central SRC will include representatives of the main campus in Bloemfontein, the Vista campus and the Qwaqwa campus of the UFS.

The establishment of the Central SRC follows the incorporation of the Qwaqwa campus into the UFS in January 2003 and the incorporation of the Vista campus in Bloemfontein into the UFS in January 2004.

According to Dr Ezekiel Moraka, Vice-Rector: Student Affairs, today’s decision of Council is the result of a lengthy, negotiated agreement between the three campuses. Independent experts facilitated part of the process.

With the establishment of a Central SRC, the UFS has adopted a federal student governance model whereby the CSRC is the highest representative student body on matters of common concern for all students.

However, the three campuses of the UFS will retain autonomous SRC structures for each campus with powers and responsibilities for matters affecting the particular campus.

This arrangement will be reviewed after a year to make allowance for the phasing out of students at the Vista campus, as was agreed in the negotiations preceding the incorporation of that campus into the UFS.

The central SRC will have a maximum of 12 members made up of members of the campus SRCs, including the presidents of these three SRCs. In total, the main campus will have 5 representatives, the Qwaqwa campus will have 4 representatives and the Vista campus will have 3 representatives.

From these 12 members a central SRC president will be chosen on a quarterly basis to represent the general student body at Executive Management, Senate and Council.

In another key decision and significant step forward affecting student governance, the Council also approved amendments the constitution of the Student Representative Council (SRC) of the main campus. These amendments were the results of deliberations of student organizations, the SRC and the Student Parliament of the UFS main campus.

The amendments to the constitution of the main campus SRC determines that nine of the 18 SRC members must be elected by means of proportional representation and nine on the basis of an individual, first-past-the-post election.

This decision comes in the wake of calls by certain student organizations on main campus for proportional representation to be included as a means of electing student representatives.

The following portfolios of the main campus SRC will be contested by individual candidates on the basis of first past the post:

president
secretary
academic affairs
legal and constitutional affairs
student development
arts and culture
men’s internal liaison
ladies internal liaison
media, marketing and liaison

The following nine portfolios will be contested by affiliated organizations on a proportional representation basis.

two vice-presidents
treasurerdialogue and associations
transformation
campus affairs and recreation
sport
international affairs
community service

It also is a breakthrough to have all constitutional changes processed and approved at the June meeting of the Council, with all relevant student organizations having been part of the process and accepting the outcome of the process.

According to the chairperson of the UFS Council, Judge Faan Hancke, today’s unanimous decisions on student governance are an indication of how all UFS stakeholders represented in Council are committed to finding win-win solutions in the interest of the university.

“Once again the UFS has reached another milestone in its transformation and has shown the rest of the country that we are pioneers in the field of reaching intelligent solutions to complex situations,” Judge Hancke said.

According to Dr Moraka, the central SRC constitution will come into effect from the start of the second semester this year.

MEDIA RELEASE

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

10 June 2005

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