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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

Research project gives insight into the world of the deaf

2005-11-30

Mr Akach in conversation (using sign language) with his assistant Ms Emily Matabane. Photo: Lacea Loader

UFS research project gives insight into the world of the deaf

The Sign Language Division of the University of the Free State’s (UFS) Department of Afro-Asiatic Studies and Language Practice and Sign Language has signed a bilateral research project with the universities of Ghent and Brussels to write a book on sign language.

“We want to compare the Belgium and South African sign languages with each other. The book will be about the deaf telling us about themselves and how they live. It will also focus on the use of story telling techniques and the grammar used by deaf people. We want to see if the hand forms and the grammatical markers and other linguistic features that deaf people from these two countries use are the same or not,” said Mr Philemon Akach, lecturer at the UFS Sign Language Division and coordinator of the research.

According to Mr Akach, the sign language community in South Africa, with about 600 000 deaf people who use South African Sign Language (SASL) as first language, is quite big. “Over and above the deaf people in South Africa, there are also the non-deaf who use SASL, like the children of deaf parents etc. This book can therefore be used to teach people about the deaf culture,” he added.

Another of Mr Akach’s achievements is his election as Vice-President of the newly established World Association of Sign Language Interpreters (WASLI). The association was established earlier this month during a conference in Worcester.

Mr Akach has been actively involved with sign language interpretation since 1986 and has been interpreting at the World Congress of the World Federation of the Deaf (WFD) since 1987. “My appointment as Vice-President of the WASLI is an emotional one. I have been involved with deaf people for so long and have been trying to create awareness and obtain recognition for sign language, especially in Africa,” said Mr Akach. WASLI is affiliated to the WFD.

According to Mr Akach there was no formal structure in the world to support sign language and sign language interpreters. “Now we have the backup of WASLI and we can convince governments in other African countries and across the world to support deaf people by supporting WASLI and therefore narrow the communication gap between the deaf and the hearing. My main aim as Vice-President is to endeavour for the recognition of sign language and spoken language interpreters as a profession by governments,” he said.

According to Mr Akach the formal training of interpreters is of vital importance. “Anybody who has a deaf person in his/her family and can communicate in sign language can claim that they are an interpreter. This is not true. It is tantamount to think that all mother tongue or first language speakers are interpreters. Likewise students who learn sign language up to whatever level and are fluent in signing, should still join an interpreter’s programme,” he said.

“Sign language interpreting is a profession and should be presented as an academic course alongside other spoken languages. The UFS has been taking the lead with sign language and spoken language interpretation and was the first university on the African continent to introduce sign language as an academic course,” he said.

“Although sign language has always been an unknown language to young people it has become quite popular in recent years. This year we had a total of 160 students at the Sign Language Section of the UFS and the numbers seem to increase steadily every year,” he said.

Mr Akach’s assistant, Ms Emily Matabane, is deaf and they communicate in sign language. Ms Matabane also handles the tutorials with students to give them hands-on experience on how to use sign language.

Media release
Issued by: Lacea Loader
Media Representative
Tel: (051) 401-2584
Cell: 083 645 2454
E-mail: loaderl.stg@mail.uovs.ac.za
30 November 2005

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