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28 April 2023 | Story Leonie Bolleurs | Photo Supplied
Schae-Lee Olckers’
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

Young researchers are equipped to participate in projects relevant in global context
2017-09-05

 Description: Wheat genomics Tags: bioinformatics, Dr Renée Prins, Department of Plant Sciences, DNA and RNA, data sets 

This group of early career researchers received bioinformatics
training in Worcester in the UK from Dr Diane Saunders of the
John Innes Centre in the UK.
Photo: Supplied

The interdisciplinary field that develops methods and software tools to understand biological data is known as bioinformatics. According to Dr Renée Prins, a research fellow in the Department of Plant Sciences at the University of the Free State, there are few tertiary institutions in South Africa that offer a postgraduate degree in Bioinformatics.

“Most institutions focus either on humans, human diseases, forest trees and their pathogens.  They usually do not have spare capacity to assist researchers, for instance, those working on crops in the agricultural sector,” Dr Prins said.

Big data sets need significant skills

With the advancements made in genomics such as high throughput DNA marker platforms and next-generation sequencing technologies, the data sets biologists have to deal with have grown massively big and cannot be dealt with unless you have significant computer skills.

Dr Prins believes that all young researchers need some level of training in this field to be effective in future. The British Council Researcher Links, being run by the Newton Fund, gives early career researchers across selected partner countries the opportunity to form international connections through fully funded workshops and travel grants. Dr Prins made use of this opportunity and with the assistance of the Department of Research Development at the UFS, she arranged for Dr Diane Saunders of the John Innes Centre in the UK, a bioinformatician of note, to present training to a group of 20 early career researchers in Worcester in the UK.

Providing training with Dr Saunders were two other bioinformaticians from the UK, Dr Burkhard Steuernagel (John Innes Centre) and Dr Robert Davey (Earlham Institute). From the UFS side, Eleanor van der Westhuizen and Dr Henriëtte van den Berg (former UFS academic) acted as mentors, providing guidance on funding opportunities and career development skills.

Participating in projects in a global context
The researchers attending the training came from research institutions or academia, and they work involving plants (predominantly wheat) or plant pathogens. A limited number of participants from the commercial sector, including private South African companies focusing on plant breeding and molecular genetics lab work on agriculturally important crops also benefited from the training. 

“Tertiary institutions in South Africa have the obligation to ensure that young scientists are equipped with bioinformatics skills. If they are not equipped with the necessary skills, they will not be able to participate in research projects that are relevant in a global context,” said Dr Prins. 

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