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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

Council approves two senior appointments

2012-03-13

Dr Choice Makhetha and Prof. Hendri Kroukamp
13 March 2012

We are delighted to announce the appointment of Dr Choice Makhetha as Vice-Rector: External Relations, and Prof. Hendri Kroukamp as Dean of the Faculty of Economic and Management Sciences.

Both appointments were approved on Friday 9 March 2012 by the UFS Council during its quarterly meeting at the Bloemfontein Campus.

“Dr Makhetha is an experienced administrator in higher education and has spent time shadowing the Presidents of Harvard and Spelman Universities in the USA, where she gained invaluable experience in positioning universities for world-class impact,” said Prof. Jonathan Jansen, Vice-Chancellor and Rector of the UFS.

Her portfolio will entail external linkages, partnerships and strategic alliances of the university with national and international stakeholders.

Previously, Dr Makhetha was the Special Assistant to the Vice-Chancellor. Before that she was acting Dean: Student Affairs, also at the UFS. She has served as acting Vice-Rector: External Relations since February 2011.

Dr Makhetha obtained a Master’s degree in Political Science from the UFS in 2000 and a Ph.D., also in Political Science, in 2003. She was named the UFS’s Dux student for 1998/99. Dr Makhetha has received many awards for her work and she serves on various boards and committees in South Africa and abroad.

In 2010 and 2011 she was a fellow at Harvard University and Spelman College as part of Higher Education South Africa (HESA)’s Higher Education Leadership and Management programme.

“Prof. Kroukamp is a distinguished academic in the field of Public Administration and a highly experienced manager and leader of academic departments. He has been serving as acting Dean of his faculty since September 2010,” said Prof. Jansen.

Prof. Kroukamp holds a B.A. (Hons.) degree in Public Administration from Stellenbosch University and an M.A. degree from the University of Port Elizabeth (UPE). In 1993 he obtained a qualification in Project Management from the World Bank. He completed a D.Phil. in Public Administration at UPE in 1996, where he was a lecturer. Prof. Kroukamp joined the UFS in 1999 as a professor and Chairperson of the Department of Public Management.

He is the referee of various national and international publications, serves on various publication boards and is a member of various national and international boards and committees.

Prof. Kroukamp, who is a National Research Foundation (NRF)-rated researcher, has received many NRF awards. Amongst these are NRF Overseas International Conference Awards in Turkey, Korea, Poland and France. He has also received a UFS Top Research Award in the Faculty of Economic and Management Sciences.

Both appointments apply retrospectively on 1 March 2012.

Media Release
13 March 2012
Issued by: Lacea Loader
Director: Strategic Communication
Tel: +27(0)51 401 2584
Cell: +27(0)83 645 2454
E-mail: news@ufs.ac.za

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