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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

New SRC: Records of support and a victory for women

2014-09-04

Ms Mosa Leteane and Ms Louzanne Coetzee
Photo: Johan Roux

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While campuses across South Africa regularly report falling voter turnout in campus elections of student representatives, the University of the Free State, in its recently completed SRC elections, registered record levels of support across our campuses with a total voter turnout of 44%. At the Bloemfontein Campus 34,4% of students voted (5052 votes) and 53,3% (1583 votes) at the Qwaqwa Campus.

Also, for the first time under the new SRC constitution, students elected a woman to lead the student body – Ms Mosa Leteane was elected as President. Another first was the election of a blind woman to the SRC – Ms Louzanne Coetzee. She will be responsible for student accessibility of our Bloemfontein SRC. This marks a victory for women in student governance.

Mr Tulasizwe Sithole was elected as the President of the SRC at our Qwaqwa Campus.

The election of Ms Leteane as President underscores the progress achieved for gender equality with near half of her SRC consisting of women (48%).

These successes are all the more significant, since this is the 4th year of elections under newly adopted SRC constitutions that allow for broader participation of diverse student constituencies in student governance.

This means that the crucial 3-year mark to test a new approach and method in governance and elections was not only successfully reached, but also in its 4th year shows the constitution as one that sustains its impact to deepen democracy and citizenship among our 30,000-strong student body.

“The results of the SRC elections across campuses show that our students are not only ready to lead our campus communities on issues relating to justice, freedom and democracy beyond our societal legacies of race and gender, but do so also for the student movement nationally. We’re immensely proud of our students, who show courage and resilience to choose leaders not for expediency, but for significance, and to lead not for some, but for all”, the Dean of Student Affairs, Rudi Buys, said.

The Qwaqwa SRC was installed on 2 September 2014, while the Bloemfontein SRC will be installed on 5 September. The Central SRC will be established on 14 September by joint sitting of the two SRCs.

The SRC members 2014/15 at the Bloemfontein and Qwaqwa Campuses are as follows:

Bloemfontein Elective portfolios:
President: Ms Mosa Leteane
Vice Pres: Mr Waldo Staude
Secretary: Ms Dineo Motaung
Treasurer: Ms Maphenye Maditsi
Arts & Culture: Mr Stefan van der Westhuizen
Accessibility & Student Support: Ms Louzanne Coetzee
First Generation Students: Ms Mpho Khati
Media, Marketing & Liaison: Ms Lethabo Maebana
Legal & Constitutional Affairs: Mr Lindokuhle Ntuli
Sport: Ms Dominique de Gouveia
Student development & Environmental Affairs: Mr Victor Ngubeni
Transformation: Mr Tumelo Rapitsi

Bloemfontein Ex officio Portfolios
Dialogue & Ex officio: Associations Student Council: Mr Piet Thibane
Academic Affairs & Ex officio: Academic Affairs Student Council: Mr Jonathan Ruwanika
Residence Affairs & Ex officio: Campus Residences Student Council: Ms Melissa Taljaard
City student Affairs & Ex officio: Commuter Student Council: Ms Kerry-Beth Berry
Post graduate Affairs & Ex officio: Post Graduate Student Council: Ms Masabata Mokgesi
International Affairs & Ex officio: International Student Council: Mr Makate Maieane
Student Media Affairs & Ex officio: Student Media Council: Mr Samuel Phuti
RAG Community Service & Ex officio: RAG Fundraising Council: Mr Johan du Plessis
RAG Community Service & Ex officio: RAG Community Service Council: Mr Manfred Titus

Qwaqwa Elective portfolios:
President General: Mr Thulasizwe Sithole
Deputy President: Ms Zethu Mhlongo
Secretary General: Mr Vukani Ntuli
Treasurer General: Mr Langelihle Mbense
Media & Publicity: Ms Nongcebo Qwabe
Politics & Transformation: Ms Nkosiphile Zwane

Qwaqwa Ex officio Portfolios
Student Development & Environmental Affairs: Mr Ndumiso Memela
Academic Affairs: Mr Simon Mofekeng
Arts & Cultural Affairs: Ms Samkelo Mtshali
Off-Campus Students: Mr Khanyisani Mbatha
RAG, Community Service & Dialogue: Mr Njabulo Mabaso
Religious Affairs: Mr Mfundo Nxumalo
Residence & Catering Affairs: Ms Ntombifuthi Radebe
Sports Council: Mr Luvuno

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