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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

White Horse to bring enchantment to Free State Arts Festival

2015-07-09

White Horse Project: Concept, Jess Oliveiri & Parachutes for Ladies; Project Manager, Mandi Bezuidenhout; Video, Louis Kruger; Costume, Lesiba Mabitsela; Performers, Gali Malebo, Chris Kleynhans, Busisiwe Matutu, Johandi du Plessis, Elrie du Toit.

A University of the Free State (UFS) and Free State Arts Festival initiative, the Programme for Innovation in Artform Development (PIAD/PIKO) has worked together with Australian artist, Jess Olivieri (Parachutes for Ladies), to bring visitors and spectators the fantastical and mythical White Horse. The UFS has served as home for the festival for a number of years, and is pleased to take part in bringing this communal project to the arts community that will gather at the annual festival.

The White Horse project begins Sunday 12 July 2015 at 15:00 at the Tweetoringkerk in Bloemfontein, launching the arts festival, while capturing the interest of many members of the Bloemfontein community as well as that of the UFS. The project itself will consist of about 200 members of the local community coming together for workshops in which they will be “reimagining” the White Horse. Olivieri will lead the workshops, which she also developed, assisted by Gali Malebo.

“The White Horse project sits within the contested nature of the White Horse - it is in this in-between space that new mythologies and narratives will be told. The project addresses, celebrates, reconfigures, and allows space for multiple narratives. Given the debate on statues and symbols, the White Horse offers an opportunity to re-purpose and re-imagine symbols in Bloemfontein,” said Olivieri.

Photograph by David Goldblatt, Sculpted by Kagiso Pat Mautloa, a memorial to those who died while in the detention of the Security Police in this building formerly known as John Vorster Square, now Johannesburg Central Police Station. 27 February 2012, Silver gelatin print on fibre based paper, 98 x 120cm

The White Horse project is supported by the Australia Council for the Arts, Free State Department of Sport, Arts, Culture and Recreation, SituateART in Festivals, Salamanca Arts Centre, Arts NSW, NAVA, Creative Partnerships Australia and the University of Sydney.

Spectators can also look forward to the work of major artists including David Goldblatt’s photographic exhibition titled Structures of Dominion and Democracy at 20:00 on Monday 13 July 2015 at the Johannes Stegmann Art Gallery. In this exhibition, he has photographed everyday sites that contain historical narratives.

Work from other artists at the Arts Festival include Blowing in the Wind (19:00 on Monday 13 July 2015 in the Centenary Gallery), curated by Carol Brown, which is an exhibition that delves into issues of environmental and human exploitation. Angela de Jesus, curator of the UFS Johannes Stegmann Art Gallery, will be curating, [my] PLEK | PLACE (18:30 on Monday 13 July 2015 in the Scaena foyer), in which the artists explore location, space, site, and/or ownership.

The Free State Arts festival begins on 13 July 2015.

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