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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

Protest actions planned for 12-14 March 2008

2008-03-13

Three protest actions will take place on the Main Campus of the University of the Free State (UFS) in Bloemfontein this week.

Although the interim court interdict granted to the UFS on 6 March 2008 is still in force, permission for the three protests was granted by the Mangaung Local Municipality and the court, in the presence of the university lawyer. Strict conditions have been set for these protest actions.

The UFS management respects the right to peaceful protest and also shares the sentiment of the protesters regarding the reprehensible Reitz video. However, strict conditions have been set for these protest actions as students are writing tests and the normal academic activities should not be disrupted.

Already the first picket protest took place today, Wednesday, 12 March 2008, by about 300 Satawu and Nehawu members. This was not a march and no memorandum was handed over.

On Thursday, 13 March 2008, Nehawu will again picket in front of the Main Building from 13:00 to 14:00. This event must be peaceful. This too is not a march and no memorandum will be handed over.

On Friday, 14 March 2008, a march of Cosatu and Nehawu will take place, starting in the city centre. The march will enter through the Nelson Mandela Drive gate and will enter the campus grounds.

However, it will be limited to the incoming lane of Chancellors Avenue from the Main Gate to the crossing with Alumni Avenue (in front of the Odeion building). Speeches will be made and a memorandum will be handed over.

It is expected that the march will reach the campus at approximately 10:00 and from then the Nelson Mandela Gate to the UFS will be closed for all traffic. The march must end by 14:00. The marchers will return to the city centre and may cause a traffic problem in Nelson Mandela Drive.

The South African Police Service (SAPS) and the UFS’s Protection Services Division will monitor all these actions. Staff, students and visitors to the campus are kindly requested to use alternative gates to the Nelson Mandela entrance on Friday. Academic activities will continue as normal this week.

Media Release
Issued by: Anton Fisher
Director: Strategic Communication
Tel: 051 401 3422
Cell: 072 207 8334
E-mail: fishera.stg@ufs.ac.za
12 March 2008

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