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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

Prof Loyiso Jita appointed as UFS Dean of Education

2017-11-22

Prof Loyiso Jita, UFS Dean of Education
Photo: Johan Roux

The Council of the University of the Free State (UFS) has approved the appointment of Prof Loyiso Jita as Dean of Education during its quarterly meeting held on the Bloemfontein Campus on 17 November 2017.

“Prof Jita has a strong academic background and a good understanding of the higher-education sector. I look forward to working with him and to realise the vision of the university as a research-led, student-centred and regionally engaged university that contributes to development and social justice through the production of globally competitive graduates and knowledge,” says Prof Francis Petersen, UFS Rector and Vice-Chancellor.

“It is indeed a privilege for me to lead a team of committed teachers and researchers in the faculty, providing excellent service to our undergraduate and postgraduate students. I thank the Council and executive management for their trust in me,” says Prof Jita.

In January 2017, Prof Jita was appointed as the Acting Dean of the Faculty of Education at the UFS. He will assume the position of Dean of the Faculty of Education on 1 December 2017.

Prof Jita began his career as a Science and Mathematics teacher, after graduating from Wits University in 1988. He later took up a lectureship position at the University of Zululand, where he was awarded a Fulbright scholarship to read for a PhD at Michigan State University in the USA. In the mid-1990s, he worked as a policy researcher at the University of KwaZulu-Natal where he, among others, helped to compile the submission on the Violation of Educational Rights of South Africans during apartheid, to the Truth and Reconciliation Commission (TRC).

He joined the University of Pretoria (UP) in 2001, after returning from a post-doctoral fellowship at the Northwestern University in Chicago, and was later appointed Director of the Joint Centre for Science, Mathematics and Technology Education (JCSMTE). He left the UP in 2008 for an appointment as an associate professor at the University of South Africa (Unisa), where he later became the inaugural Director of the School of Education. In 2011, he became a full professor and was appointed as the acting Deputy Executive Dean in the College of Human Sciences at Unisa.

In 2012, he joined the UFS as Research Professor in the School of Mathematics, Natural Sciences, and Technology Education. In November 2014, he was appointed as the SANRAL Chair for Science and Mathematics Education. Professor Jita has published many articles on instructional leadership, teacher development and change, Science and Mathematics education, and has presented over 50 papers at local and international conferences. He has also supervised to completion more than 37 master’s and PhD graduates, and is currently the editor-in-chief for the accredited journal, Perspectives in Education (PIE).

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