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Food security dominant driver of plant pathology research in future

05 April 2022 | Story Leonie Bolleurs | Photo Supplied

WJ swart — Prof Wijnand Swart believes a ‘systems level understanding’ of phytobiomes (consisting of plants, their environment, and all their associated organisms) will enable us to produce sufficient crops to meet global demands while minimising negative impacts on our environment.

Plant health is important for the survival of our planet and all its living creatures. Now, imagine an instrument that contains a DNA chip from virtually every known plant pathogen, where one can simply snip off a piece of the infected plant material, slip it into the ‘plant disease tricorder’, and within seconds you have not only a diagnosis of the disease, but all the information about its control too.

According to Prof Wijnand Swart, Professor of Plant Pathology in the Department of Plant Sciences at the University of the Free State (UFS) and President of the Southern African Society for Plant Pathology (SASPP), this concept might be a bit far-fetched, but is a distinct possibility for the not-too-distant future. “Without a doubt …,” he believes.

He was recently a guest on a series of radio talks on plant health in South Africa, hosted by the National Science and Technology Forum (NSTF) in partnership with Plaas/Farm TV (YouTube broadcaster). His talk on the topic, Whither (or wither) Plant Pathology in the next 50 years, was specifically focused on understanding the latest research and dynamics of the discipline in a South African context.

In terms of this futuristic perspective, he says collaboration between plant pathologists and biomedical and aeronautical engineers, nanotechnologists, and computer scientists will aid the development of micro-sensory technologies for the detection of new plant diseases that are relevant to biosecurity, plant disease diagnostics, and epidemiological modelling.

In his discussion, Prof Swart referred to the work of Prof John Lucas, former Head of Plant Pathology and Microbiology at the Rothamsted Research Station in the United Kingdom, who believes that there are three key issues facing plant pathologists in the 21^st century. These are the strengthening of food security while simultaneously safeguarding the health of associated ecosystems and reducing the dependency on natural resources; the creation of pest and disease control systems that are sustainable and not compromised by the evolution of pest and pathogen strains; and the development of suitable crop protection technologies.

Future technologies

Based on the work of Prof Lucas, Prof Swart states that future technologies in plant health will develop in five areas. In the first area, he says DNA-based technologies will greatly increase the speed, sensitivity, and accuracy of pest and pathogen detection and diagnosis.

Also key here, is the integration of nanomaterials into disease management strategies and diagnostics. He says in the past decade, the use of nanotechnology in phytopathology has grown exponentially. According to him, nanotechnology can increase productivity using nano-pesticides and nano-fertilisers, improve soil quality by means of nano-zeolites and hydrogels, stimulate plant growth using nanomaterials, and provide smart monitoring via nano-sensors and wireless communication devices.

Prof Swart says according to Prof Lucas, the second area in which plant health technologies will grow is plant defence and immunity. When induced, plant resistance primes plants to deal with a diversity of biotic and abiotic stresses. Prospects of inducing chemically modulated plant resistance via biological agents (such as engineered microbes), might result in low-cost seed treatments, thereby removing the need for expensive chemical spray regimes.

Technology development in plant health will also become more evident in genetic diversification. Prof Swart believes sequencing the genomes of major crop species and their wild relatives will expand the known gene pool and diversify genetic resources available to plant breeders.

According to him, a new era is beckoning, where the prospect of crop pharmacology based on signal molecules and their receptors will become a reality. It will be based on the development of novel chemistries designed to manipulate specific molecular targets, by either regulating host resistance or disabling the disease-causing processes of pathogens.

The fifth area in which plant health technologies will develop, is ecological approaches to disease control. He says by understanding the ecology of pathogens, our ability to exploit their natural enemies will improve. Ecological approaches to plant disease control will have a significant impact on the introduction of invasive pathogen species, while the effect of climate change will influence the emergence of new plant diseases and epidemics. He strongly believes that it is important to take a holistic approach to understanding how and why plant pathogenesis occurs if we are to manage diseases effectively.

Future challenges

The development of these new technologies is very important, as there are several challenges that plant pathology will face in the future. These include the increasing demand for food to support the growing global population; the decreasing production potential of agriculture due to competition for fertile land; the increased risk of plant disease epidemics resulting from agricultural intensification; the depletion of natural resources; and the influence of climate change on interactions between plants and their pests or pathogens.

Prof Swart believes a ‘systems level understanding’ of phytobiomes (consisting of plants, their environment, and all their associated organisms) will enable us to produce sufficient crops to meet global demands while minimising negative impacts on our environment.

He concludes, saying that plant pathology will evolve as an interdisciplinary science. He adds that future research will focus on new problems that are traditionally seen as outside the core discipline of plant pathology. Furthermore, food security will be a dominant and important driver of plant pathology research, while the impact of climate change on plant diseases will be very significant. Finally, that the adaptive potential of plant and pathogen populations will be one of the most important predictors of the magnitude of climate change effects.

LISTEN: radio interview

News Archive

Conference: Expanded ARV treatment

2005-03-02

VENUE: University of the Free State, Bloemfontein, South Africa
DATE: 30 March 2005 - 1 April 2005

ARV Programme as on 24Feb Download Word document
Programme Special events Download Word document

Official web site www.fshealth.gov.za/subsites/arvc

Rationale for the Conference
At the time of the planned Conference, much ground would have been covered, both in the Free State and in South Africa, in respect of the expanded public sector ARV treatment programme in respect of research, experiences in practice, training of staff, treatment of patients, lessons learned, successes and failures, etc. The time would then be quite opportune to share these in a systematic manner with other provinces and countries, as well as with the large variety of stakeholders and role players in the ARV and related domains, be they academics and researchers, policy makers and service/facility managers, the variety of caregivers, and the community organisations and affected patients.

The Conference and current research
The proposed Conference is, firstly, directly linked to the current research on the public sector roll-out of ARV treatment in the Free State conducted by several research institutions (e.g. CIET, CHSR&D, UCT Lung Institute). Secondly, the Conference could and would serve as a forum for other research groups in the country and further a field to report and share knowledge and experiences on ARV treatment and related initiatives. Lastly, the Conference will stage a golden opportunity for researchers and scientists, on the one hand, and policy makers, managers, and caregivers (as knowledge users), on the other hand, to engage in cross-disciplinary discourse on this mutual and topical theme.

Theme of Conference
Expanded ARV treatment in the Free State: sharing experiences

Focus
The focus is primarily on public sector ARV treatment in the Free State, but also initiatives/activities/perspectives of relevance to the Free State elsewhere in the country at large and further a field, as well as relevant ARV initiatives in the public, private, NGO and FBO sectors. Bear in mind, however, that ARV treatment is but part of a much more comprehensive approach to HIV and AIDS. The Conference will, therefore, not narrowly focus on the ARV treatment programme only. The broader context, other relevant dimensions, and a comprehensive approach to the challenges of HIV, AIDS and TB are of equal importance.

The purpose of the Conference
Enhance meaningful exchange, mutual understanding and collaboration among researchers, scientists, policy makers, managers and practitioners in the field of ARV treatment and related fields.

Share experiences in the various spheres of ARV treatment and related spheres (policy, management, practice, research, training, public-private-civil society sectors).

Record, reflect and report on the establishment of the ARV treatment programme in the Free State, and in within the context of the comprehensive HIV/AIDS programme.

Disseminate important research results on ARV treatment and related themes to health policy makers, managers, practitioners, communities and to the research community.

Stimulate discourse among various disciplines and various stakeholders/role players involved in ARV treatment and related programmes.

Sensitise and acquaint researchers to the requirements of policy makers, managers and practitioners in respect of ARV treatment and related fields.

Facilitate the implementation of research results in ARV treatment policy, programmes and practice.

Dissemination of Conference-related information
Information generated during the Conference could feed into policy, management and practice of ARV treatment, the training accompanying such programme, and the existing body of knowledge. After the Conference the information will be disseminated via the Internet and by scientific and popular publications.

Date and duration
Set for 30 & 31 March & 1 April 2005; to commence at 09:00 on the first day (30 March) and to end at 16:30 (1 April) the third day.

Format and scope of Conference
Alternating plenary, parallel sessions and debates focused on topical issues and interest groups. The Conference will strive to be maximally interactive and participative.

Themes and topics to cover:

Policy, management and health services/practice (various levels and contexts – clinical treatment, information, IT systems, pharmacy, laboratories, nutrition)
Research covering all relevant disciplines and diverse dimensions of ARV treatment and related themes
Training and evaluation of training
Patients, communities and civil society organisations
Public, private, NGO, FBO initiatives and partnerships

Emphasis will be on the Free State, however, with of significant involvement from other provinces, SADC countries, and countries further a field. The thrust will be to export lessons and experiences from the Free State, but also to import lessons and experiences from other provinces, countries and sectors.

Presenters
Key presenters from the Free State, other provinces, South Africa, from the private, FBO and NGO sectors, and from several other countries

Delegates
About half of the delegates will be Free State stakeholders and role players (all levels and all contexts). The other half will be role players and stakeholders in the ARV and related fields from other provinces, the national level, and other countries, as well as from the private, public and non-governmental sectors.

Focused workshops
Provision will be made for half-a-day or one-day workshop initiatives on the third day (1 April 2005).

Enquiries
For more information please contact:

Prof Dingie van Rensburg
Centre for Health Systems Research & Development
University of the Free State
PO Box 339
Bloenfontein
SOUTH AFRICA
9300

Contact:
Carin van Vuuren
Conference Organiser
Centre for Health Systems Research & Development
University of the Free State
P.O.Box 339
Bloemfontein
South Africa
9300
Tel +27 (0) 51 401 2181
Fax +27 (0) 51 4480370
Cell 0832932890
e-mail: arvconference.hum@mail.uovs.ac.za

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