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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

Three OSM students selected for the 2013 World Youth Symphony Orchestra

2013-01-25

Carmi Nel	Elsabe Raath
Maja van Dyk

25 January 2013

Three students from the University of the Free State’s Odeion School of Music (OSM) have proved their mettle. Carmi Viljoen (violin), Elsabé Raath (viola) and Maja van Dyk (viola), have been accepted into the prestigious World Youth Orchestra – an orchestra known worldwide for its quality and the prix de corps itadvances between nations.

Musica Europa, an Italian cultural association, founded the World Youth Orchestra (WYO) in its present guise in 2001. It has close ties with UNICEF and its mission is to combine music with social activities from cultures all over to world in order to enrich the cultural life of all.

Rigorous auditions are held which require applicants to upload video recordings onto a website (Vimeo). An international board of adjudicators subsequently listens to these recordings and select the best.The three OSM students were good enough to make the grade.

These three musicians are also members of the Free State Symphony Orchestra, as well as the MIAGI orchestra that toured Europe successfully last year. They are also outstanding chamber musicians. Carmi and Elsabé, as members of the Junior Odeion String Quartet, have shown that they are on par with international standards and have toured The Netherlands. In 2012, Maja van Dyk had been selected to perform as soloist with the National Youth String Orchestra under the baton of Swedish conductor and violinist, Fredrik Burstedt.

They first heard of the possibility of playing for the WYO through Anmari van der Westhuizen, lecturer at the OSM. Margarite Spies from the KZN Philharmonic Orchestra (KZNPO) had contacted her in search of worthy candidates. A scant three weeks later, they received the good news of their inclusion.

The orchestra, with representatives from five continents, will be touring South Africa this year and no less than nine South Africans have been included. The tour kicks off in Durban, followed by performances in East London, Plettenberg Bay, George, Knysna, Stellenbosch, with a grand finale in the Cape Town City Hall.

Works that will be performed include ‘’Romeo and Juliet’’ by Prokofiev, the irrepressible “Carnival Overture” by Dvorák, Barber’s ‘’Adagio for Strings’’ and part of Mahler’s majestic Fifth Symphony, all under the baton of the dynamic Josep Vicent.

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