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06 December 2018 | Story Leonie Bolleurs | Photo Barend Nagel
Marcelle Vermeulen
Marcele Vermeulen, a graduate from the Department of Plant Sciences, explores possible threats to crop production; contributing to food security in South Africa.

Global food security is currently threatened both by climate change and the low diversity of crops relied on by humankind to feed a growing world population. Marcele Vermeulen, a graduate in the Department of Plant Sciences who will receive her PhD at the December graduation ceremonies at the University of the Free State (UFS), is part of a team that is working hard to add to the diversity of staple foods in South Africa.

In the drive to focus on alternative crops, Marcele is researching the crop, Amaranthus cruentus, (grain amaranth). It is more tolerant to environmental stress for large-scale production, thereby also diversifying staple crops.

Relatively new development

“Amaranthus cruentus is an excellent candidate due to its high nutritional value and tolerance to drought and high temperatures. It can be mixed with conventional maize meal, to increase the protein intake of its consumers,” said Marcele.

The production of A. cruentus as a grain crop in South Africa is a relatively new development.

In her research, exploring the possible threats to crop production and paying particular attention to dominant plant pathogens in the Amaranthus cruentus, Marcele found a correlation between fungal pathogens and insect pests. 

Insect pests can influence plant diseases

Although reports on fungal pathogens and pests specific to A. cruentus are limited to and information for South Africa is limited to this study, there is a possibility that by controlling insect pests such as weevils, one might also be able to control fungal pathogens of Amaranthus cruentus.

Marcele believes that control of weevil pests should thus be the focus of future pest and pathogen management strategies and breeding programmes in A. cruentus.  

“Knowledge gained in my thesis will hopefully aid in the development of future cultivation practices, integrated pest/pathogen management programmes, as well as for the registration of crop protection products for A. cruentus,” Marcele added.

Research Contributes to Food Security from University of the Free State on Vimeo.

News Archive

National 3MT competition held at UFS
2017-03-29

Description: 3MT 2017 Tags: 3MT 2017

The two winners of the Three minute thesis
competition, Andrew Verrijdt (left) and
Kerryn Warren (right).
Photo: Charl Devenish


From Neanderthal hybrid children to eating corn silk as a way of managing kidney diseases, the National Three Minute Thesis competition (3MT) captivated the mind.

“We brought the competition to South Africa and hosted the local, regional, and national competitions for the past few years,” said Dr Emmie Smit, organiser of the event. It is an opportunity to raise the profile of postgraduate research and to develop a cross-disciplinary student community to effectively communicate research to a wide audience. The event was founded by the University of Queensland, Australia. The third national 3MT competition took place at the University of the Free State (UFS) on Friday 24 March 2017.

Three minutes and one slide
During the competition, participants had three minutes to explain their master’s or doctoral research and one static PowerPoint slide could be used. “It is very important that this slide works for you. There must be some way the information on the slide connects to what you present,” said Dr Henriette van den Berg, Director of the Postgraduate School at the UFS.
 
Winners grateful for opportunity
“It is an honour and a drive. It is very nice to have this sort of thumbs up,” said Kerryn Warren, winner of the Science category. Her research title was, What did a Human-Neanderthal Child Look Like? “I have been looking at the hybrids between different species and subspecies of mice in order to use them as a model to find out what human hybrids looked like.”

The presentation by Andrew Verrijdt, winner of the Humanities category, entitled Hiding in the Deep: Anonymous Websites for Paedophiles on the ‘Darknet’, gave a glimpse into the mysterious and dangerous realm of the dark web. “I am grateful for the opportunity. Primarily because I think it’s an important topic, and society will benefit by getting the word out there as it is a sensitive topic,” he said. The two winners, both from the University of the Cape Town, won R15 000 each.  A further R30 000 of prize money went to the four runners-up.

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