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Revolutionising wheat: Developing cultivars that maintain their quality in heat and drought

28 April 2023 | Story Leonie Bolleurs | Photo Supplied

UFS PhD student and food scientist Schae-Lee Olckers’ research could contribute to a stable supply of good quality wheat and bread, even in the face of climate change.

Follow your passion in order to find your purpose. This is the mantra of food scientist and University of the Free State (UFS) PhD student Schae-Lee Olckers, whose research is set to improve wheat quality by identifying which types of wheat are better able to tolerate stress, and which proteins are most important for producing high-quality bread.

“By grasping this, it is possible to ensure that we continue to have a stable supply of good quality wheat and bread, even in the face of climate change,” says Olckers, who believes wheat is one of the most important food grains in the human diet, and one of the most important staple cereal crops in the world.

Her PhD study, ‘The influence of abiotic stress on gluten protein and baking quality in bread wheat’, under the supervision of Dr Angie van Biljon and Prof Maryke Labuschagne in the Department of Plant Sciences, and Prof Garry Osthoff in the Department of Microbiology and Biochemistry, is investigating how different levels of heat and drought stress – mostly due to climate change – affect the gluten protein composition of high-yield bread wheat.

Olckers is a food scientist at StartWell Foods (Pty) Ltd, a non-profit organisation that produces high-quality extrusion products for feeding schemes around the country. The products help to eliminate stunted growth among children.

Improving wheat breeding programmes

This research could help us find ways to adapt to climate change and continue to produce high-quality wheat and bread for people around the world. – Schae-Lee Olckers

Her research focuses on examining different types of wheat and investigating how proteins are affected by stressors like heat and drought, to understand how these stressors impact the quality of bread. She uses new proteomic methods to look at the different proteins in the wheat flour, to gain a better appreciation of how gluten proteins react to stress.

In this study Olckers is able to see how the proteins change in the various wheat cultivars, helping us to understand how the different types of wheat perform in baking, and how the proteins affect the final product.

She collaborates with the International Maize and Wheat Improvement Center (CIMMYT) in Mexico, that releases new wheat cultivars for developing countries. Their aim is to develop wheat cultivars that maintain their quality in different environments. To investigate the performance and characteristics of the seeds, both in the field and in the laboratory, CIMMYT did the field trials, quality assessment, and supplied the seeds for high-performance liquid chromatography (HPLC) and proteomics analysis.

Finding ways to adapt to climate change

She believes that understanding how these stressors impact the production of bread-baking quality in wheat will help scientists gain important insights into how climate change affects our food supply.

“Taking into consideration the current and projected intensifying heat and water deficit stresses, it is crucial to improve the understanding of these phenomena in order to implement new breeding strategies for sustainable wheat quality. This research could help us find ways to adapt to climate change and continue to produce high-quality wheat and bread for people around the world,” Olckers says.

News Archive

UFS to implement a policy on HIV and Aids

2005-03-14

The Council of the University of the Free State (UFS) approved the implementation of a policy on HIV and AIDS.

“With this policy we recognise the seriousness of the HIV and AIDS epidemic and the potential impact this disease can have on both the UFS and the wider society. We are committed to addressing HIV and AIDS in a positive, supportive and non-discriminatory approach by providing resources and leadership to implement HIV and AIDS university-based, as well as community outreach programmes,” said Dr Ezekiel Moraka, Vice-Rector: Student Services at the UFS.

The objectives of the policy include:

The protection of individual rights of confidentiality and freedom from discrimination.
The promotion of a sustained educational programme that provides counseling and current accurate information to the University community and to the outside community.
The promotion of behaviors that reduce or minimise the risk of acquiring HIV infection and generally create a safe environment.
The provision of leadership in teaching, research and community service on HIV and AIDS and its impact.
The provision of leadership in promoting the human rights based approach to HIV and AIDS, and thereby also breaking down the stigma attached to the illness.

“The policy also makes provision for the establishment of a Centre for HIV and AIDS within Kovsie Health. This centre will render HIV and AIDS related support services and initiatives to the whole campus,” said Dr Moraka.

According to Dr Petro Basson, head of the Centre for HIV and AIDS at the UFS, there is less than 1% incidence of HIV positive cases amongst undergraduate students on the main and Vista campuses. All these students take part in a voluntary confidential counseling and testing programme (VCCT). In the case of postgraduate students, there is about 1% incidence on both campuses.

“The Centre for HIV and AIDS has led in the development of information campaigns and workshops for students and staff to make them aware of the risks of HIV and AIDS and the necessary measures to ensure their safety. We have found that, because students have access to the right information, they are more cautious when it comes to HIV and AIDS. Awareness campaigns are also conducted throughout the year – especially during rag and intervarsity,” said Dr Basson.

“Some departments have also taken the lead in introducing aspects of HIV and AIDS into academic programmes while important research on the HIV and AIDS topic has already been completed and receives continuous attention,” said Dr Basson.

To achieve a coordinated approach, a Life Skills Forum will be established consisting of representatives of among others the Student Representative Council (SRC), academic departments, trade unions, Kovsie Counseling and Development, etc.

“With this policy the UFS pledges its commitment to participate actively in the fight against the disease,” said Dr Moraka.

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

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