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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

The silent struggles of those with invisible disabilities
2016-12-13

Description: Dr Magteld Smith, invisible disabilities Tags: Dr Magteld Smith, invisible disabilities 

Dr Magteld Smith, researcher and deaf awareness
activist, from the Department of Otorhinolaryngology
at the UFS.

December is International Disability Awareness Month. Despite equality before the law and some improvements in societal attitudes, people with disabilities are still disadvantaged in many aspects of their lives. They are more likely to be the victims of crime, sexual abuse, are more likely to earn a low income or be unemployed, and less likely to gain qualifications than people without disabilities.

Demystifying disabilities is crucial

Dr Magteld Smith, a researcher at the University of the Free State (UFS) School of Medicine’s Department of Otorhinolaryngology, says that often people think the term “disability” only refers to people using a wheelchair, etc. However, this is a misperception because some individuals have visible disabilities, which can be seen, and some have invisible disabilities, which can’t be seen. Others have both visible and invisible disabilities. There is an ongoing debate as to which group has the greatest life struggles. Those with visible disabilities frequently have to explain what they can do, while individuals with invisible disabilities have to make clear what they cannot do.

Invisible disability is an umbrella term that captures a whole spectrum of invisible disabilities and the focus is not to maintain a list of specific conditions and diagnoses that are considered invisible disabilities. Invisible disabilities include debilitating fatigue, pain, cognitive dysfunctions, mental disorders, hearing and eyesight disabilities and conditions that are primarily neurological in nature.

Judging books by their covers
According to Dr Smith, research indicates that people living with invisible disabilities often suffer more strained relationships than those with visible disabilities due to a serious lack of knowledge, doubts and suspicion around their disability status.

Society might also make serious allegations that people with invisible disabilities are “faking it” or believe they are “lazy”, and sometimes think they are using their invisible disability as an “excuse” to receive “special treatment”, while the person has special needs to function.

Giving recognition and praise
“One of the most heartbreaking attitudes towards persons with invisible disabilities is that they very seldom enjoy acknowledgement for their efforts and accomplishments. The media also seldom report on the achievements of persons with invisible disabilities,” says Dr Smith.

Society has to understand that a person with a disability or disabilities is diagnosed by a medical professional involving various medical procedures and tests. It is not for a society to make any diagnosis of another person.

Dr Smith says the best place to start addressing misperceptions is for society to broaden its understanding of the vast, varying world of disabilities and be more sensitive about people with invisible disabilities. They should be acknowledged and given the same recognition as people with visible disabilities.

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