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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

Researcher in Otorhinolaryngology advocates education in deafness and hearing loss
2015-12-17

Description: Dr Magteld Smith  Tags: Dr Magteld Smith

Dr Magteld Smith

The annual International Day of Persons with Disabilities falls on 3 December. Statistics reveal that 7.5% of the South African population suffer from some form of physical disability.

More than 17 million people in South Africa are dealing with depression, substance abuse, anxiety, bipolar disorder, and schizophrenia - illnesses that round out the top five mental health diagnoses, according to the Mental Health Federation of South Africa. The South African Federation for Mental Health is the umbrella body for 17 mental health societies and numerous member organisations throughout the country.

On disability, world-renowned author Helen Keller, who was both deaf and blind, once said that the problems that come with being deaf are deeper and more complex than those of blindness, and is a much worse misfortune. For it means the loss of the most vital stimulus - the sound of the voice that brings language, sets thoughts astir, and keeps us in the intellectual company of man.

According to Dr Magteld Smith, lecturer and researcher in the Department of Otorhinolaryngology at the University of the Free State (UFS), hearing loss of any degree at any age can have far-reaching psychological and sociological implications which affect an individual’s day-to-day functioning, and might prevent him or her from reaching their full potential. She says that even though advancements have been made in aiding deaf persons, there’s still considerable room for improvement. She’s making it her mission to bring about changing the stigmatisation around deafness, and the different choices of rehabilitation.

Dr Smith was born with bilateral (both ears) severe hearing loss, and became profoundly deaf, receiving a cochlear implant in 2008. Not letting this hinder her quality of life, she matriculated in 1985 at a School for the Deaf in Worcester. Today she is the only deaf medical-social researcher in South Africa.

Her research focuses on all aspects of deafness and hearing loss. Through first-hand experience, she knows that a loss of hearing can be traumatic as it requires adjustments in many areas of life which affect a person’s entire development. However, she has not let her deafness become a stumbling block. She has become the first deaf South African to obtain two Master’s degrees and a PhD, together with various other achievements.

Her work is aimed at informing and educating people in the medical profession, parents with children, and persons with various degrees and types of hearing loss about the complexities of deafness and hearing loss. She believes that, with the technological advancements that have been made in the world, deaf people can become self-sufficient and independent world changers with much to contribute to humanity.

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