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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

International speakers unite to discuss diversity

2014-01-20

The Institute of Reconciliation and Social Justice is hosting a two-day colloquium on 30–31 January 2014. A broad range of keynotes will discuss the topic: ‘Diversity and the politics of engaged scholarship: A comparative study in higher education’.

Prof Jonathan Jansen, Vice-Chancellor and Rector, and Prof Dr Halleh Ghorashi from the Netherlands will lead as keynote speakers on the first day.

Prof Dr Ghorashi is a Professor of Diversity and Integration in the Department of Sociology at the Vrije Universiteit Amsterdam. She is the author of ‘Ways to Survive, Battles to Win: Iranian Women Exiles in the Netherlands and the United States’. She has also published extensively on topics such as identity, diasporic positioning, cultural diversity and emancipation.

During the second day, Dr Charles Alexander from Los Angeles and Prof Shirley Tate from Leeds will lead as keynote speakers.

Dr Alexander is Associate Vice-Provost for Student Diversity at the University of California. He has run several programmes for students who have been underserved by higher education, including students from immigrant families and underrepresented populations. In 2011, Dr Alexander received a Champions of Health Professions Diversity Award from The California Wellness Foundation in recognition of his commitment to increasing California’s health care workforce and its diversity.

Prof Shirley Tate’s work focuses, among others, on theorising ‘race’ performativity and the intersection between 'race' and gender. She has written on mixed ‘race’ identities, affect, beauty, embodiment, pain and women in prison, transracial intimacies, gendered prison identities, racial affective economies in organisations, as well as on domestic work and food.

The sessions led by these keynote speakers are open to the public and the Institution welcomes everyone to join in this topical discussion.

Date: Thursday 30 January 2014 and Friday 31 January 2014
Time: 09:00–11:00
Place: Centenary Hall
RSVP: vannestel@ufs.ac.za

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