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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

#Women'sMonth: Lack of HIV education still affects children
2017-08-17

Description: Nickie Goedhals Tags: Dr Nickie Goedhals, Medical Microbiology and Virology, The Lancet, transmission of HIV, National Research Foundation 

Dr Nickie Goedhals, Senior Lecturer and Pathologist
in Medical Microbiology and Virology at the UFS.
Photo: Sonia Small



“Despite all the advances in the management and prevention of HIV, children still become infected every day, often due to lack of education and access to health care.” This is according to Dr Nickie Goedhals, Senior Lecturer and Pathologist in Medical Microbiology and Virology at the University of the Free State (UFS).

Study published in UK medical Journal 
A case study she was part of and published in the UK medical journal The Lancet in 2012, demonstrates the transmission of HIV to a child through surrogate breastfeeding. This study is one of the many highlights in the young researcher’s career. She received her first rating from the National Research Foundation (NRF) in 2017 for the work she has done in Medical Virology over the past eight years.

According to the above-mentioned study, only about 1% of infants in South Africa are being breastfed by a surrogate. However, results from a study in the Free State showed that shared breastfeeding by a non-biological caregiver was the most important factor associated with HIV infection in discordant mother-child pairs. Therefore, continued education about the risk of HIV transmission is needed.

Dr Goedhals is also continuing with research on HIV by looking at HIV drug resistance. She is in the process of starting new projects focusing on HIV infection and drug resistance in infants.

PSP helped with NRF-rating
She says, although her NRF Y2-rating is the starting point of a research career, it shows that she is heading in the right direction, and it “gives access to research funds through the NRF for future projects.” Other important research she conducted was on Crimean-Congo haemorrhagic fever – the study for her PhD.

The Prestige Scholars Programme (PSP) at the UFS is the reason that she applied for the rating. “With all the service delivery, teaching, and administrative responsibilities of academic medicine, it is easy to lose focus. The PSP has really helped to create a focused and stimulating environment for research.” According to her, the PSP also provides access to a network of peers and senior staff at the UFS, as well as exposure to national and international experts.

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