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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

Report card for UFS outlines major achievements

2005-02-04

Staff at the University of the Free State (UFS) have received above-inflation increases in remuneration averaging 18,2 percent since the year 2000, according to the Rector and Vice-Chancellor, Prof Frederick Fourie.

Delivering a keynote speech at the Official Opening of the UFS today, Prof Fourie gave a report card for the UFS which he said indicated significant progress in salaries and promotions as well as capital expenditure and infrastructure development on the campus.

“The aggregate extra earnings of staff (money in their pockets above inflation) from 2000 to 2005 amount to R75 million in salaries. This is the result of the hard work of all staff and we pay tribute to them,” he said.

Prof Fourie said that several categories of staff are better off than before the financial turn-around strategy was implemented in 2000 which aimed to make the UFS a financially sustainable campus.

The lowest paid workers and professors had received an additional structural correction, which gave professors at the UFS a 27% above-inflation increase (on total remuneration package) since 2000.

He said there had also been a dramatic increase in promotions to associate professor and full professor during the last 6 years.

From 1999 to December 2001, there were only 9 promotions to associate professor. From January 2002 to January 2005, there were 37 such promotions to associate professor, four times as many.

Regarding promotions to full professor, from 1999 to December 2001 there were 7 promotions. From January 2002 to January 2005, there were 31 promotions to full professor, more than four times as many.

“We have also created a new category of senior professor to give due recognition to the outstanding work of our leading academics in many fields,” Prof Fourie said.

The UFS has introduced numerous new and innovative learning programmes, together with an increasing number of community service modules which enhanced the UFS as a leader in service learning and helped to make it a university engaged with its surrounding community.

According to Prof Fourie the number of support staff had also grown along with the professionalisation of the support services.

He said management was aware that there still several challenges regarding staff overload and staff development but that these were being addressed

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

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