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11 February 2020 | Story Leonie Bolleurs | Photo Leonie Bolleurs
Prof Liesl van As
Prof Liesl van As, Academic Head of the Department of Zoology and Entomology, is passionate about equal rights for parasites.

As a research-led institution, the university has 1 600 female researchers (2019 statistics), with 63 boasting ratings from the National Research Foundation (NRF). Four of the UFS SARChI Research Chairs are also headed by women. 

One of the scientists at the University of the Free State (UFS) who gets excited about research is Prof Liesl van As, Academic Head of the Department of Zoology and Entomology

She was part of the UFS team that established Africa’s largest digital laboratory, equipped with 227 microscopes, to ensure that undergraduate students from Zoology and Entomology, as well as Plant Sciences (Faculty of Natural and Agricultural Sciences), have access to hi-tech equipment for a cutting-edge teaching experience.

The good and the bad 

But she also has a passion for her own research – that of fish parasites. Her most recent research work is about the biodiversity of fish parasites in natural river systems, with a focus on the Orange River and its tributaries, as well as the Okavango River and Delta in Botswana.

A few years ago, the Department of Agriculture, Forestry and Fisheries expanded their mandate for fisheries management by adding inland fisheries and aquaculture to their list of responsibilities. 

Prof Van As believes her research will add value to this process. “If we are going to expand inland fisheries, we need to expand our knowledge of what is happening in natural systems. It is important that we know and understand what potential problems might arise in aquaculture conditions.”

Equal rights for parasites

“We also need to understand that not all so-called parasites are bad, some have co-evolved with their hosts and they are part of our overall biodiversity. If the hosts are going extinct, so does this amazing spectrum of symbionts,” says Prof Van As, who is enthusiastic about promoting ‘equal rights for parasites’ (Wilson, 1995). 

When it comes to the future of women in research, Prof Van As – inspired by life itself, believes the possibilities are endless. “If you can dream it, you can do it. Ex Africa Semper Aliquid Novi (out of Africa there is always something new),” she states. 




News Archive

Researcher works on finding practical solutions to plant diseases for farmers
2017-10-03

 Description: Lisa read more Tags: Plant disease, Lisa Ann Rothman, Department of Plant Sciences, 3 Minute Thesis,  

Lisa Ann Rothman, researcher in the Department of
Plant Sciences.
Photo: Supplied

 


Plant disease epidemics have wreaked havoc for many centuries. Notable examples are the devastating Great Famine in Ireland and the Witches of Salem. 

Plant diseases form, due to a reaction to suitable environments, when a susceptible host and viable disease causal organism are present. If the interactions between these three factors are monitored over space and time the outcome has the ability to form a “simplification of reality”. This is more formally known as a plant disease model. Lisa Ann Rothman, a researcher in the Department of Plant Sciences at the University of the Free State (UFS) participated in the Three Minute Thesis competition in which she presented on Using mathematical models to predict plant disease. 

Forecast models provide promise fighting plant diseases
The aim of Lisa’s study is to identify weather and other driving variables that interact with critical host growth stages and pathogens to favour disease incidence and severity, for future development of risk forecasting models. Lisa used the disease, sorghum grain mold, caused by colonisation of Fusarium graminearum, and concomitant mycotoxin production to illustrate the modelling process. 

She said: “Internationally, forecasting models for many plant diseases exist and are applied commercially for important agricultural crops. The application of these models in a South African context has been limited, but provides promise for effective disease intervention technologies.

Contributing to the betterment of society
“My BSc Agric (Plant Pathology) undergraduate degree was completed in combination with Agrometeorology, agricultural weather science. I knew that I wanted to combine my love for weather science with my primary interest, Plant Pathology. 
“My research is built on the statement of Lord Kelvin: ‘To measure is to know and if you cannot measure it, you cannot improve it’. Measuring the changes in plant disease epidemics allows for these models to be developed and ultimately provide practical solutions for our farmers. Plant disease prediction models have the potential ability to reduce the risk for famers, allowing the timing of fungicide applications to be optimised, thus protecting their yields and ultimately their livelihoods. I am continuing my studies in agriculture in the hope of contributing to the betterment of society.” 

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