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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 votes on appointment of senior staff

2004-11-18

The Council of the University of the Free State (UFS) today voted on the filling of three senior vacancies, including one post at Dean level and two at the level of Vice-Dean.

The Council voted as follows:


Dr Natie Luyt will be offered the post of Dean: Student Affairs	Prof Engela Pretorius will be offered the post of Vice-Dean: Faculty of Humanities	Dr Choice Makhetha will be offered the post of Vice-Dean: Student Affairs

“There are special challenges for the UFS in the short and medium term regarding transformation of our residences, and a certain combination of management qualities and skills is desirable. As a result of the diversity of the UFS’s student community it is therefore important to us to follow a team approach to deal with the challenges. With the combination of Drs Luyt and Makhetha, I believe we will be able to manage student affairs effectively and skillfully,” says Prof Frederick Fourie, Rector and Vice-Chancellor of the UFS.

“It is wonderful that we are able to celebrate the outcome of this process that has brought forward such excellent candidates who reflect our country’s diversity. It shows that we can achieve the goals of quality and diversity at the same time,” says Prof Fourie.

Prof Pretorius obtained all her qualifications (BA, BA (Hons) (cum laude), MA (cum laude) and D Phil) from the UFS, except for the Certificate in Gender Policy Management (cum laude) which she obtained in 2000 from WITS. She joined the Department of Sociology at UFS in 1980 and has headed the Department since 2001. She acted as Vice-Dean: Faculty of Humanities since July 2004. She has some thirty publications to her credit, published both nationally and internationally and has delivered 20 national and international papers. She is a member of the South African Sociological Association and is a member of the Council of the association and of the Editorial Board of Society in Transition, the society’s journal. She is also a member of the South African Academy for Science and Art and the Federation of African Women Educationalists in South Africa (FAWESA). Project involvement includes the Australian Women’s Executive Development Programme and the project Executive Development of Senior Women in South African Higher Education Institutions. She is also an NRF panelist.

Dr Luyt obtained his qualifications (BA, BA (Hons) (cum laude), MA (cum laude) and D Phil) at the UFS and started his career at the same institution in 1980 as lecturer in Political Science. He was promoted to senior lecturer in 1983 and appointed as Director: Student Affairs in 1997. He has been acting as Dean: Student Affairs since 2003. Dr Luyt completed several work-related training courses, among others a course in ethnic and multiculturality at the Swiss Institute for Federalism and a course in conflict management at the South Tyrolean Economic and Social Institute.

Dr Makheta also obtained all her qualifications (BA, BA (Hons), MA in Political Science and Ph D in Political Science) at the UFS and started working as a student assistant in Political Science at the same institution in 1999. She was promoted to junior assistant in 2000, coordinator and facilitator of Political Science in 2001, assistant/acting Director: Student Affairs in 2001 and acting Director: Student Affairs in 2003. Dr Makhetha is currently a Senior Political Analyst at the Department of Foreign Affairs.

The UFS Council also approved the promotion of nine professors to the rank of senior professor. They are Proff Louise Cilliers (Department English and Classical Languages), Dap Louw (Department of Psychology), Philip Nel (Department Afro-Asiatic Studies, Sign Language and Language Practice), Dirk van den Berg (Department of History of Art and Visual Culture Studies) Dingie van Rensburg (Director: Centre for Health Systems Research and Develoment), Andries Raath (Department of Constitutional Law and Philosophy of Law), James du Preez (Department of Microbial, Biochemical and Food Biotechnology), Johan Grobbelaar (Department of Plant Sciences) and Louis Scott (Department of Plant Sciences).

This is the first group ever of senior professors at the UFS. The post level was created to provide better career and earnings opportunities for high quality academics and to increase the attractiveness of an academic career to young people.

Media release
Issued by: Lacea Loader
Media Representative
Tel: (051) 401-2584
Cell: 083 645 2454
E-mail: loaderl.stg@mail.uovs.ac.za

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