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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

Spring graduation ceremony

2006-09-15

A three-year old boy from Welkom, Kearabetswe Mokoena, stole the show at the spring graduation ceremony of the University of the Free State (UFS) in Bloemfontein. He was dressed in an exact replica of the academic outfit worn by his father, Mr Ketseletso Mokoena, who obtained his LLB degree from the UFS. The outfit was made by Kearabetswe’s mother Mrs Ennie Mokoena. From the left are Mr Mokoena, his son Kearabetswe, and Prof Frederick Fourie, Rector and Vice-Chancellor of the UFS.
Photo: Lacea Loader

Prof Mos Thulare (acting Rector and Vice-Chancellor of the Central University of Technology) obtained his LL.B. degree during the spring graduation ceremony of the University of the Free State (UFS) in Bloemfontein. On the photo, he is congratulated by Prof Frederick Fourie (Rector and Vice-Chancellor of the UFS).
Photo: Stephen Collett

Altogether five master's degrees in Physics were awarded during the University of the Free State's (UFS) spring graduation ceremony in Bloemfontein. It is the biggest group of master's degrees in the history of the UFS Department of Physics awarded during a graduation ceremony. From the left are: Richard Harris, Puleng Ramoshebi, Prof Hendrik Swart (Head of the UFS Department of Physics), Lisa Coetsee and Etienne Wurth. One of the students, Gerhard Olivier, was absent when the photo was taken.
Photo: Lacea Loader

Altogether 29 doctorates were awarded during the University of the Free State's (UFS) spring graduation ceremony in Bloemfontein. Some of the doctorandi are from the left: Drs Nicholas Mtshali (Chemistry), Candice Jansen van Rensburg (Zoology), Ina Claassens (Physics), Martin Ntwaeaborwa (Physics) and Vicki Tolmay (Plant Breeding).
Photo: Lacea Loader

A great number of students from Africa were among the 29 students who received their doctorates during the University of the Free State's (UFS) spring graduation ceremony in Bloemfontein. From the left are: Drs Amaha Kassahun (Grassland Science) and Tolessa Debele (Soil Science), both are from Ethiopia.

A number of doctorates were awarded to students across the world during the University of the Free State's (UFS) spring graduation ceremony held in Bloemfontein. From the left are: Drs Eli Kohn (from Israel who received a doctorate in Near Eastern Studies), Prof Philip Nel (UFS Department of Afro-asiatic. Studies, Sign Language and Language Practice), Prof Annette Wilkinson (Centre for Higher Education Studies and Development at the UFS) and Dr Padmanabhan Nair (from India who received a doctorate in Higher Education Studies). Prof Nel was Dr Kohn's co-promoter and Prof Wilkinson was Dr Nair's promoter.
Photo: Stephen Collett

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