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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

Sarah, our own champion
2008-11-05

 
Sarah Shannon at the Paralympic Games in Beijing

 

Sarah Shannon, a second-year student in the Postgraduate Certificate in Education, has been involved in disability sport on national level for the past 12 years. Sarah has cerebral palsy.

In 1996 she participated at the South African National Championships for the physically disabled for the first time, entering for several sporting codes and winning five gold medals. In swimming she participates in the S3 class together with other swimmers that have comparable abilities to hers.

In 1997 she decided to focus on swimming competitively. She participated in her first national championships for swimming that year. After that (1998) she represented South Africa on international level at the International Paralympic Committee’s (IPC) Swimming World Championships in New Zealand where she ended 4th in the 50m backstroke and 7th in both the 50m and 100m freestyle in her class.

In 1999 she represented South Africa in Johannesburg at the 7th All Africa Games and won a silver medal for the 50m freestyle and a bronze medal for the 100m freestyle.

In 2000 she was part of the South African team at the Sydney Paralympic Games where she reached the finals and finished 7th in the 50m backstroke and 8th in the 50m freestyle. Northern-KwaZulu-Natal also awarded her the Junior Sportswoman of the Year award in 2001. In 2002 she participated at the South African Senior National swimming championships for KwaZulu-Natal in the multi-disability category.

In 2005 she completed the Midmar Mile. She also represented South Africa at the world championships for athletes with cerebral palsy in Boston in the United States of America. She won two gold medals for respectively the 50m freestyle and the 50m backstroke and two silver medals in the 100m and 200m freestyle. She was also nominated to represent South Africa as athlete’s representative on the world committee of CPISRA (Cerebral Palsy International Sports and Recreation Association). In this year Sarah also received the KwaZulu-Natal Premier’s Sportswoman with a disability award of the year.

In 2006 she qualified for the IPC world championships but could not attend.

In 2007 she represented South Africa once more at the Visa Paralympic World Cup in Manchester in the United Kingdom where she broke the South African record in the 50m backstroke, finishing 7th in the 50m freestyle and 6th in the 50m backstroke.

She was also part of the very successful Team South Africa to the Paralympic Games in Beijing. She reached the finals in both the 50m backstroke and 50m freestyle. She finished 7th in the 50m freestyle and 6th in the 50m backstroke in personal best times for both events. She has been participating in the able bodied South African National Swimming Championships since 2002. She is currently ranked 2nd in the world for short course items and 11th for the long course items. She is truly our best swimmer in the S3 class.
 

 

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