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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

First-years excited about new life at university

2017-01-25

Description:Residences welcome class of 2017 Tags: Residences welcome class of 2017 longdesc=

First-years moved into residences at the
Bloemfontein Campus of the University of
the Free State on 20 and 21 January 2017.
Photo: Rulanzen Martin

The Bloemfontein Campus of the University of the Free State was abuzz with excitement as first-year students arrived at their new homes and residences, brimming with enthusiasm at starting a new chapter in building towards a professional career.

Although there were some mixed emotions about leaving the nest, most students were excited about the times ahead as they moved into their residences on 20 and 21 January 2017.

Student life and building a career

“I am looking forward to a new adventure, to student life and living at university. Also to build my future here,” said Veruska van Schalkwyk, as her parents, who had driven all the way from Springbok in Northern Cape, helped her unpack at Harmony residence.

Veruska, who will be studying Nursing, said she loved TV programmes like Grey's Anatomy. “Nursing has always been my passion and something I loved. I have always loved helping people.”

University provides a prosperous future

For Okuhle Gubevu, who will also be a first-year in Harmony, the UFS is the ideal place to further her career. “Out of all the research I have done, the University of the Free State is the one university that has a prosperous future for me in my ventures to become an accountant,” she said. “Because of that and because it is not too far from home, I decided on the UFS.”

Mopeli Lebohang will be staying in Outeniqua residence and is keen to work hard. “I heard the course I am studying, B Accounting, is the third toughest course at the university,” he said. “I am excited, because I like challenges.”

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