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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

TEDxUFS conference - the highlight of the university’s innovative calendar

2015-08-11

Mmusi Maimane, leader of the Democratic Alliance with co-organisers of TEDxUFS Bonginkosi Leeuw and Lerothodi Molete after his inspirational talk at the event.
Photo: Curtis Nhlamulo Mashimbye

This year’s TEDxUFS speaker lineup persuaded the audience unanimously to question the nature of reality. The Albert Wessels Auditorium on the Bloemfontein Campus was packed with about 200 attendees on Saturday 1 August 2015.

Speakers shared a multiplicity of profound theories and inquisitions, challenging society in general to think out of the box. Melody Mentz, Gil Oved, Ricardo Peach, Pamela Nomvete, Pepe Marais, Mmusi Maimane, Brian Kally, Pieter Geldenhuys, Philippa Tumubweinee, Gareth Cliff, and Angelo Mockie took on to the stage to tackle multidisciplinary concepts as part of the broad ‘Ask Why’ theme.

Innovation mouthpieces share their worldview

Pieter Geldenhuys, the internationally-renowned futurist and Director of the Institute for Technology Strategy, and Innovation proposed that we change our mindsets by neglecting predictability. “We need to look at different models to understand the world around us,” he said. He challenged the linear and familiar ways humans make sense of the universe.

Speaking to the dire need for transformation, Philippa Tumubweinee suggested that university spaces merge with the communities they serve in terms of policies, social atmosphere, and physical structure. Tumubweinee is a senior Lecturer at the Department of Architecture at our university, and co-Founder and Director of Izuba In Africa architects.

“Only we can give permission to be intimidated; so don’t give in,” said Brian Kally, the CEO of Arrow Logistics (Pty) Ltd. Kally underscored the power of believing in our individual ideas.

Guidelines from TEDxUFS organisers

Bonginkosi Leeuw: “If you take your brainchild and implement it, and make it a reality, that’s when you can achieve great things, not before that.”

Lerothodi Molete: “You should ask questions; the moment you ask the question you will understand more.”

Real-time social media feedback

These are some of the comments audience members published on Twitter at the event:

IG: mispertanzy ?@MiesperTanzy Aug 1

A huge shout-out to @TEDxUFS for hosting such a great conference!The team has really made the event an unmissable one on the UFS calendar.

Celebrabitur? ?@HatsuMphatsoe Aug 1

Proximity that allows us to experience our broader society. Truly engaged by Philippa Tumbweinee's talk! @TEDxUFS

TEDxJohannesburg ?@TEDxJoburg Aug 1

A big shoutout to @TEDxUFS from for a fantastic event. Wish we were there.

RicardoPeach ?@ricardopeach Aug 1

Africa is rich with potential #TEDXUFS @MmusiMaimane Yes!

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