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|  | BACKGROUND |  |  | 
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|  | At the 
7th International 
Congress of Plant Pathology (Edinburgh 1998) a Special Public 
Meeting was convened on ... |  |  | 
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|  | Global Food Security: The Role for Plant Pathology |  |  | 
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|  | It was addressed by five speakers including Norman 
Borlaug, plant pathologist and winner of the Nobel Peace Prize in 
1970 for his work on food security (he died in 2009). He
challenged 
ISPP to take action to support global food security through control 
of plant diseases. ISPP's Task Force on Global Food Security was set up 
in 1998 in response to his challenge. |  |  | 
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|  | ISPP provided a background brief for the 1998 meeting. It is 
developed here with content updated to 2016, and compared with 
background material prepared for later Congresses. |  |  | 
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|  |  1998 
(Edinburgh) 
  2003 
(Christchurch) 
  2008 
(Torino) 
  2013 
(Beijing) 
  2018 
(Boston) |  |  | 
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|  | THE ENORMITY OF THE PROBLEM OF GLOBAL FOOD SECURITY |  |  | 
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|  |  Of the 
global population of more than 7 billion people, some 800 million do not 
have enough to eat today. The vast majority of these people live in 
developing countries (FAO 
2015). By 2050, the global population is expected to exceed 9 
billion (US 
Population Division). |  |  | 
|  |  It has been 
estimated that pathogens and pests reduce global production of the five major 
crops (wheat, rice, maize, potato and soybean) by 20-30%, and that the greatest 
losses are associated with food-deficit regions (Oerke 
& Dehne 2004;
Savary et 
al. 2019). |  |  | 
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|  | Plant pathologists cannot ignore the juxtaposition of these 
figures for food shortage and the damage to food production caused by 
plant diseases. |  |  | 
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|  | During the World Food Summit in Rome in 1996, Heads of States agreed 
to halve the number of hungry people by 2015, relative to 1990-92. 
Significant progress has been made, despite substantial increase in the 
global population, but there are still 800 million hungry people. The 
Millennium Development Goals of 2000 set a target of halving the 
proportion of the world's hungry people by 2015. This target has almost 
been achieved. But despite overall progress, much remains to be done to 
eradicate hunger and achieve food security (FAO 
2015). |  |  | 
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|  | Global crop production needs to be substantially increased 
to meet the demands of a growing population. |  |  | 
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|  | For the 11th International Congress of Plant Pathology 2018, the Task Force 
led the development of three sessions devoted to food security under the overall 
theme: 
 Emerging Plant Diseases: The Threat to Global Food 
Security
 
 
  Public 
Meeting at Harvard Museum of Science - Crop Diseases Threaten Global Food 
Security and Your Breakfast 
  Emerging 
Plant Diseases and Global Food Security (Keynote Session) 
  Innovative 
Technologies for Monitoring Emerging Diseases (Concurrent Session) 
 The content of the presentations under these three headings was representative 
of issues limiting food security in 2018. They form the outline of an ISPP book 
to be based on presentations at the Boston Congress, Plant Diseases and Food 
Security in the 21st Century, one of a series on
Plant 
Pathology in the 21st Century. One of its chapters includes this summary of 
some challenges of food security at that time.
 
 The uncertainty of food security calls for innovative 
solutions in order to meet the 2030 Agenda for Sustainable Development and in 
particular the United Nations Sustainable Development Goals (SDGs). The 2030 
Agenda for Sustainable Development, adopted by all United Nations Member States 
in 2015, is based on 17 SDGs, requesting global partnerships across developed 
and developing countries to create strategies that improve health and education, 
reduce inequality, and increase economic growth (Sustainable 
Development Goals, 2017).
 
 Smallholder farmers in developing countries, who produce enough food to feed 
their families with some surplus to sell at the local market, comprise one of 
the main groups to be affected by emerging plant pests and diseases, with 
subsequent yield loss. Approximately 500 million smallholder farmers provide 
over 80% of the food for a large part of the developing world (International 
Fund for Agricultural Development, 2013).
 
 Achieving a world without hunger by 2030 depends on increasing the productivity 
of smallholder farmers; however, their crops face significant threats. Yearly, 
an estimated 25-40% of six major crops grown worldwide is lost to pests (Oerke, 
2006; 
Savary et al., 2019). If crop losses were reduced 
by as little as 1%, millions more people could be fed. A key challenge is to 
deliver appropriate, actionable extension advice to farmers, at the right time, 
to help them reduce crop losses.
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|  | WHY DO PLANT DISEASES MATTER? |  |  | 
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|  | Pathogens and pests reduce production of the five major crops by some 20-30% 
(Oerke 
& Dehne 2004;
Savary et 
al. 2019). |  |  | 
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|  | Historically, plant diseases have had catastrophic impact |  |  | 
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|  |  Potato 
blight caused the Irish famine in 1845 
  Brown 
spot of rice caused the Great Bengal Famine of 1943 
  Southern 
corn leaf blight caused a devastating epidemic on the US corn crop in 
1970 |  |  | 
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|  | At present, food security is threatened by plant diseases |  |  | 
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|  |  Wheat 
blast 
  Banana 
xanthomonas wilt |  |  | 
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|  |  Potato blight, caused by the fungus Phytophthora 
infestans  Potato blight struck Europe like "a bolt from the blue" in the 
1840s. In Ireland, about a million people died of starvation and rather 
more than a million attempted to emigrate. The reasons for this calamity 
were the arrival in Europe of a virulent strain of the pathogen, the 
high dependence of much of the Irish population on potato for 
sustenance, the lack of resistance in the plant to the pathogen, and 
weather conditions favorable to epidemic development (Strange 
& Scott 2005). |  |  | 
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|  |  Brown spot of rice caused by the fungus 
Cochliobolus miyabeanus  Brown spot of rice was a major cause of the Great Bengal Famine of 
1943, in which at least 1.5 million people died. Favourable weather 
conditions for the fungus resulted in an epidemic which reduced the 
yield of rice crops by 40-90%. Most of the population was dependent on 
rice as a single crop. The devastating famine that followed was 
exacerbated by hoarding and over-pricing in the prevailing atmosphere of 
political uncertainty and fear. |  |  | 
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|  |  Southern corn leaf blight of maize caused by the 
fungus Cochliobolus  heterostrophus  A devastating epidemic of southern corn leaf blight occurred on the 
maize crop in the USA in 1970, due to the rapid evolution of a new race 
of the pathogen, Race T. This race was specific for maize cultivars with 
T-cytoplasm, which was in widespread use because it conferred male 
sterility, thereby facilitating the production of hybrid seed. The 
resulting genetic uniformity of the maize crop rendered it extremely 
vulnerable to the new race. |  |  | 
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|  | Some diseases are critically threatening now |  |  | 
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|  |  Wheat blast caused by the fungus Magnaporthe 
oryzae  One of the most fearsome wheat diseases in recent decades, according 
to CIMMYT, wheat blast can shrivel the grain in less than a week. First 
sighted in Brazil in 1985, blast is now widespread in South America. In 
2016 there was a severe outbreak in Bangladesh. The spread of wheat 
blast could be devastating to South Asia, home to 300 million 
undernourished people. There is an urgent need for better understanding 
of this emerging threat, with the development of control measures and 
especially selection of resistant cultivars of wheat.  |  |  | 
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|  |  Banana xanthomonas wilt caused by the bacterium 
Xanthomonas campestris pv. musacearum  The banana crop provides more than 25% of the food requirements of 
100 million people, mostly in Africa. Since the discovery of the banana 
xanthomonas wilt (BXW) bacterium in 1968, and its rapid subsequent 
spread, production has been severely threatened. BXW kills the mother 
plant which cannot then produce the subsequent ratoon crop by vegetative 
reproduction. Infected areas cannot be replanted due to carryover of 
soilborne inoculum.  |  |  | 
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|  | WHAT ISPP'S COMMISSION ON GLOBAL FOOD SECURITY CAN DO ... 
some examples |  |  | 
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|  | Faced with the huge challenge of global food security, ISPP's Commission of some 20 
people has to focus its resources on realistic aims. 
Guided by 
Norman Borlaug's challenge, the Task Force aims to take 
action to support global food security through control of plant 
diseases. Some examples follow. |  |  | 
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|  | Food security focus at plant pathology congresses |  |  | 
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|  | At the series of International Congresses of Plant Pathology, the 
programmes have featured plenary discussion sessions on Global Food 
Security, normally open to the public. Follow the links to see the 
detail. |  |  | 
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|  |  1998 (Edinburgh) 
  2003 (Christchurch) 
  2008 (Torino) 
  2013 (Beijing) 
  2018 (Boston) |  |  | 
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|  | A new journal, Food Security |  |  | 
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|  | This 
journal is the initiative of a distinguished international group of 
scientists, sociologists and economists who hold a deep concern for the 
challenge of global food security, together with a vision of the power 
of shared knowledge as a means of meeting that challenge. It has been
commended by 
Norman Borlaug for addressing the constraints - physical, biological 
and socio-economic - which not only limit food production but also the 
ability of people to access a healthy diet. |  |  | 
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|  | Supporting cassava farmers in Ghana |  |  | 
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|  | More than half of the farming population of Ghana are cassava 
growers. The
ISPP Congress Challenge Award was won by the Crops Research 
Institute (Ghana) to help farmers in the Volta region to recognize when 
their crops were diseased and then to develop disease control strategies 
to improve food security and enhance income generation. The project
Report describes how 60 farmers participated in farmer field school 
activities and were encouraged to transfer skills and techniques to 
their neighbours. A
Disease 
Guide was published and a DVD on cassava diseases and their 
identification for schools and agricultural extension agents. |  |  | 
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|  | Raising public awareness of plant diseases in Southern 
Africa |  |  | 
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|  | A further
Challenge Award was won by the University of Pretoria for a project 
to improve awareness of the impact and importance of plant disease for 
food security. A mobile lab, "Plant Pathology on Wheels", was developed 
for use in schools and at public. The
project report features a tour with undergraduate plant pathology 
students to Mozambique, Swaziland and South Africa. A DVD on
"Plant pathology as a career" 
was produced. |  |  | 
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|  | Reviews and Position Papers on food security issues |  |  | 
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|  | The Commission supported a widely cited review "Plant 
disease: a threat to global food security" 
in Annual Review of Phytopathology. There are sections on: What are the 
threats? How serious are the threats? How can the threats be minimized? 
The challenge of the future. The summary includes these two quotations: 
"Catastrophic plant diseases exacerbates the current deficit of food 
supply." "At the political level, there is a need to acknowledge that 
plant diseases threaten our food supplies and to devote adequate 
resources to their control." 
 A chapter on "ISPP 
and the Challenge of Food Security" was published in the book The 
Role of Plant Pathology in Food Safety and Food Security. It is noted 
that "Although there are many reasons for food insecurity such as 
inhospitable climate, poor soil, inadequate access to food, trade 
barriers and political constraints, plant diseases have a fundamental 
role to play as they decrease yields, destroy crops or make their 
cultivation impossible".
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|  | Members of the Commission have published the first of a series of 
Position Papers on current issues: "Genetic 
modification for disease resistance: a position paper". It 
concludes: "The ISPP Task Force on Global Food Security considers that 
there is untapped potential for using GM to introduce resistance to more 
pathogens in a wider variety of crops. The Task Force advocates an 
objective approach to assessment and application of the potential of GM, 
as one means of addressing the severe impact of plant disease on food 
security". 
 Further Position Papers are planned on Fungicides and 
on Phytosanitary Issues.
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|  | Knowledge base on plant diseases and food security |  |  | 
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|  | A series of databases concerned with plant pathology food security 
is under development at the University of Pretoria on: |  |  | 
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|  |  Conferences 
  Institutions 
  Funding 
Sources 
  Think 
Tanks |  |  | 
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|  | AIM OF THE COMMISSION, updated 2015 |  |  | 
|  | Formerly (1998-2018) ISPP Task Force on Global Food Security |  |  | 
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|  | The aim of the ISPP Task Force on Global Food Security is to foster 
linkages between plant pathology and key food security challenges, to 
promote understanding of the issues and to facilitate action to sustain 
global food security. 
 This is to be achieved through a 
balanced program including the fostering of institutional linkages and 
action-based projects. The Task Force will serve as a platform for 
information exchange, for example through the Food Security journal, and 
through knowledge bases, position papers, think tanks and conferences. 
Progress towards the aim will require funds to be raised.
 
 The 
aim reflects the activities proposed at the formation of the Task Force 
in 1998 - responding to Norman Borlaug's challenge to action by ISPP and 
now forming part of the workplan of ISPP - including action to influence 
public policy and opinion on global food security through increased 
awareness of the significance of plant diseases.
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|  | THE COMMISSION IN THE HISTORY OF ISPP |  |  | 
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|  | The development of the Commission as a distinctive element in ISPP's 
programme is covered in detail in
History of the 
International Society for Plant Pathology. |  |  | 
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|  | Members of the 
Commission |  |  | 
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|  | Return to the top |  |  | 
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|  | © The International Society for Plant Pathology Inc. All rights reserved. Website: Peter Williamson  Revised:  28/04/2021 09:04:17 AM
 
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