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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

A model of resilience – Dr Anja Botha probes into the ability to recover from trauma
2014-12-02

She may have been awarded her doctorate degree only in July 2014, but Psychology lecturer at the University of the Free State (UFS), Dr Anja Botha, is already making a name for herself with her latest research.

Her study aims to develop a model of resilience for South African adolescents exposed to trauma. “The broad field, within which I work, is that of Developmental Psychology, with a specific focus on child and adolescent development and therapy,” says Dr Botha. 

Resilience studies are situated within Developmental Psychology since normal developmental tasks – such as achieving self-confidence and building supportive relationships – contribute greatly to children’s resilience. Resilience broadly refers to the individual’s ability to ‘bounce back’ after being exposed to adversity.

“The model of resilience which I compiled was a good fit for my participant group, indicating that the model explains the development of resilience in these adolescents well. The factors that I found to promote resilience in the South African context include various coping skills, intra- and interpersonal strengths, family involvement, and school engagement.

“Thus, aside from my passion for resilience studies, I am also very much interested in coping, strength-based interventions, parental guidance and school-based programmes.”

Dr Botha was awarded a Donald J Cohen fellowship in August 2014 during the 21st World Congress of the International Association for Child and Adolescent Psychiatrists and Allied Professions. The fellowship is in recognition of her work as an emerging international scholar in the field of child and adolescent mental health. This award was based on both her research as well as her involvement in the training of postgraduate students in child psychology.

She is currently supervising a number of master’s students’ research on various constructs related to resilience.

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