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Plant Sciences graduate contributes technique to manage stem rust

08 October 2020 | Story Leonie Bolleurs | Photo Supplied

Dr Cornel Bender received her PhD qualification at the virtual graduation ceremonies in October. The title of her thesis is: Stem rust resistance in South African wheat and triticale.

The rapid distribution of disease-causing organisms such as Ug99, a wheat stem-rust pathotype, pointed out just how vulnerable global cereal production is to disease outbreaks.

These cereals include wheat, barley, rye, oats, triticale, rice, maize, and millet and are one of the most important food sources for human consumption.

According to Dr Cornel Bender, the projected world population of 10 billion in 2057 requires a growth of more than 40% in cereal production. Wheat is grown on more hectares than any other cereal and is one of the most important sources of calories for humans. However, the growth rate of wheat yields has declined from the 1960s to the 1990s. Therefore, it is essential to increase global wheat production.

“With the regular appearance of more aggressive stem rust pathotypes in South Africa, there is a constant need to discover new sources of resistance, understand the genetic base of presently deployed sources in wheat, triticale and barley cultivars, and to manipulate the deployment of resistant sources through a more sustainable approach,” says Dr Bender.

Her PhD thesis, titled: Stem rust resistance in South African wheat and triticale, includes various fundamental aspects for the effective management of stem rust in South Africa.

Dr Bender is a Professional Officer in the Division of Plant Pathology in the Department of Plant Sciences, who received her PhD at the virtual graduation ceremonies in October.

Innovative and cost effective

Her promotors, Prof Zakkie Pretorius, Research Fellow, and Dr Willem Boshoff, Senior Lecturer in the Department of Plant Sciences, believe that she used an innovative approach to develop a cost-effective phenotyping method to select for more durable resistance types in a controlled greenhouse environment.

“In the past, results obtained from field trials used to assess adult plants for stem-rust resistance, were often influenced by abiotic factors, were seasonable in nature, expensive, and time consuming; therefore, the development of a dependable greenhouse screening system provides an important additional instrument for rust research,” says Dr Bender.

She adds that the greenhouse technique is used worldwide to screen for adult plant resistance and contribute to save time and money.

Broadening our knowledge

“Inheritance studies were undertaken to determine the genetic base of stem-rust resistance in selected South African wheat and triticale cultivars (developed from wheat/rye crosses) through seedling analysis as well as greenhouse and fieldwork,” she says.

Dr Bender believes the use and development of different resistance screening methods, the elucidation of host genetics, as well as the use of histological and microscopic methods to study early resistance responses, broaden our knowledge and understanding of stem-rust resistance in South African wheat and triticale cultivars.

Ultimately, rust researchers, grain producers, and also the general public – through access to their daily bread – will benefit from her study.

News Archive

UFS receives research grant focusing on enablement of non-profit organisations

2011-01-20

Prof. Mabel Erasmus

The University of the Free State (UFS) has received a research grant to the value of R1,1 million from the National Research Foundation (NRF) to conduct research on community engagement, with the emphasis on knowledge as enablement – a Non-Profit Organisation (NPO) focus.

This was the first time the NRF had requested applications for research with a focus on community engagement (CE). With the grant, the UFS has become one of the first recipients of a research grant that focuses on community engagement.

The overarching research question that will be dealt with is how Higher Education Institutions (HEI) and the NPO sector can establish long-term, research-based collaborative engagements that will be mutually empowering and enabling through joint, reciprocal knowledge-based activities and capacity building.

The contention that this proposal is based on, is that HEIs have limited knowledge of the NPO sector and thus are unable to be fully responsive to the challenges that NPOs face. What is more, it is very likely that staff and students from HEIs do not have an adequate grasp of the experiential understanding, contextual community knowledge and practical know-how that NPO practitioners have, and hence do not appreciate the crucial contributions that they can make with regard to meaning-making processes aimed at improving some of the harsh South African realities.

According to Prof. Mabel Erasmus, Associate Professor and Head of the university’s Division: Service Learning, which submitted the research proposal to the NRF and is the grant-holder, the university would like the information generated by the research to be beneficial to both HEIs and the NPOs. “Knowledge regarding NPOs, specifically their challenges and information about what they are doing, will be invaluable to HEIs. At the same time, the research must benefit the NPOs with knowledge to improve their practice and strengthen their functioning.

“The research will take place in close collaboration with the NPOs, as their inputs are crucial. The research will thus not be ‘about’ them but ‘with’ them.”

“We do not want to send our students for community-based education or as volunteers to NPOs year after year and it does not mean as much to them as these organisations would hope for. With the research process we would like to strengthen NPOs, to build their capacity and give them our whole-hearted cooperation,” she said.

Funding received from the grant will be applied over a period of three years. Except for the study grants for five Ph.D. students and four master’s students, the grant will further make provision for a number of workshops, a local conference, a publication and presentations at international conferences on this matter. The research team of 22 persons includes academics from other HEIs such as the Central University of Technology, University of Zululand, University of Johannesburg and Monash SA. Several staff members of NPOs also form part of the team, including REACH (Bfn), Childline (FS) and others.

Prof. Erasmus said that the UFS was one of a few institutions that were currently conducting research to this extent on the link between the NPO sector and HEIs within the field of community engagement.

Media Release
18 January 2011
Issued by: Lacea Loader
Director: Strategic Communication (actg)
Tel: 051 401 2584
Cell: 083 645 2454
E-mail: news@ufs.ac.za

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