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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

Three minutes for research
2015-09-07

When you have only three minutes in which to explain an 80 000-word thesis, every second counts. This is what researchers from across the country realised during the first national round of South Africa’s Three-minute thesis competition.

The University of the Free State (UFS) Postgraduate School hosted this international competition on the Bloemfontein Campus, where master’s and doctoral students from 12 universities participated. During the competition, each researcher had to give a presentation on his/her research within three minutes.

Dr Henriette van den Berg, Director of the UFS’s Postgraduate School, and presenter of the two-day competition, said the competition is the ideal platform to teach researchers how to become effective research communicators.

“It is important that researchers should learn to communicate the essence of their research to audiences that aren’t necessarily specialists in the field. They should also be able to emphasise how their research contributes to the success and well-being of communities. Researchers often have to explain to persons who aren’t specialists in their specific research area the reasons why it is important to fund the research, for example, or during a work interview. They should be able to convey the essence of their research effectively in a very short time.”

The 3MT competition, which originated at the University of Queensland in Australia, has in 2010 developed into an international trend since its inception. Currently, the 3MT is presented in Australia, the USA, and the UK.

For the competition, participants are given just three minutes to explain their research. In this time, they have to explain the problem and the methodology, as well as why this research is important. Participants are allowed to make use of only one piece of static imaging material for support.

A panel of judges from the participating universities were selected to assess each presentation, based on how well participants expressed themselves in such a short time, and on their choice of imagery.

Gavin Robinson from the University of Johannesburg, Cameron McIntosh, and Ingrid Alleman, both from the UFS, were the respective winners in the categories for doctoral and master’s students.

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