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Legumes are the 3rd largest family of flowering plants
• Second only to grasses in agricultural importance
• Keystone family for nutrition
N
NO NH
2
4
+
3
-
C-N
1
3
4
5
2
6
Legumes &
rhizobia
Why legumes?
Of particular importance in food
insecure regions of the world
A key source of humankind’s protein nitrogen
• High Protein content of seed
• Enrich soil in vital nitrogen
In non-legume systems, nitrogen derives primarily from industrial processes that depend on fossil fuels.
Nitrogen drives agricultural costs, is among the world’s most significant pollutants and major contributor to greenhouse gases.
Courtesy of Pulse Canada
The predominance of legumes in developing world diets, makes them key vehicles for delivery of both micro and macro-nutrients
Iron, zinc, fiber, oils and fats, caloric intake …
Feeding a growing world
• A large and growing population in which malnutrition is the
most widespread human malady.
• Large disparities in production, capacities, income.
• Urgent need to increase the efficiency of agricultural
systems, while reducing environmental impact.
• Longstanding challenges to agriculture – disease,
drought, variable inputs, etc.
• Increasing planetary warming, with more extreme and
less predictable weather.
• Need for increased investment in research and
development.
Since the Green Revolution, legumes received significant underinvestment.
The best land and the major financial investments have been in grasses: rice, wheat and maize, for examples.
In the developed world, animal protein has replaced legumes, despite significant upsides of legumes for health and sustainability.
Agriculture under stress
70% of the freshwater used by humans is for agricultural purposes, often exceeding local regeneration rates. Irrigation alone is not sustainable.
“Meeting humanity’s increasing demand for freshwater and protecting ecosystems at the same time will be one of the most difficult and important challenges of this century”
Mekonnen and Hoekstra Sci. Adv. 12 Feb 2016
66% of the human population (4.0 billion people) lives under severe water scarcity (WS > 2.0) at least 1 month of the year. Of these, half a billion people face severe water scarcity all year round.
Year-in, year-out, water availability is the major factor limiting agricultural yields
The changing climate will impact developing countries most
• Countries close to the equator will suffer declines in productivity.
– heavily depend on agriculture
– already warm environment
– lack of infrastructure to adapt to changes
– lack of capital to invest in innovation adaptation
• Commodity prices will increase due to the reduction in production.
• Higher commodity prices would increase farm revenue, but hurt poor
farmers who consume more than they produce.
The problem of climate is more than just drought
• Drought
• Heat
• Cold
• Pests and Disease
• Nitrogen fixation
Planta ertherains.Producecroponresidualsoilmoisture.Exposescroptodrought.
Terminal drought is the most consistent threat to chickpea production
… in Ethiopia, farmers plant AFTER the summer rains conclude, which exposes the crop to drought. WHY?
Ascochytablightisaclimate-drivendisease,ando enthelimi ngfactorinchickpeaproduc on
Fusariumwilt
Podborer
•Nitrogen fertilizers are not
an option.
•Degraded soils compound
plant nutrition.
Most of the world’s poor live in the semi-arid
tropics …
… where drought and heat
are most severe
Drought and heat suppress
legumes’ potential for N-
fixation
Global Context
• Severe hunger and poverty affects nearly 1 billion people
around the world.
• By 2050, it’s estimated that the earth’s population will reach 9
billion. Global food production will need to increase
significantly to 100 percent to feed these people.
• Two billion people in the developing world are malnourished
-- the world’s most serious health problem.
The power of investing in agriculture is clear: Agricultural
development is two to four times more effective at reducing
hunger and poverty than any other sector.
How do we address these challenges?
• Partnerships: governments, foundations, international
organizations, scientists, engineers, farmers, etc.
• Sustained investment with a variety of time horizons
• Recognize the importance of scale: “local problems and
priorities are not necessarily global problems and priorities”
• Embrace diverse scenariosInfrastructure (Roads, seed systems, etc)
EducationDiplomacy and capacity buildingNutritionScience
The example of chickpeaDeveloping crops that yield efficiently
under conditions of limiting water
Science has a role to play
In development?
In agriculture, bridging yield gaps, increasing resilience to climate and disease, increasing sustainability, …
Chickpea is among the world’s most important pulse legumes and critical to food security in
much of the developing world
•Stagnant yields•Susceptible to pathogens, pests and abiotic stress
• Drought
• Heat
• Pests and Disease
• Nitrogen fixation
• Nutrition
• Soil adaptation
• Agronomic traits
• Domestication
11
countryArea (Ha) harvested
Production (tonnes)
Yield (Kg/Ha)
India 9,600,000 8,832,500 920
Australia 573,600 813,300 1,418
Pakistan 992,000 751,000 757
Turkey 423,557 506,000 1,195
Myanmar 335,000 490,000 1,463
Iran (Islamic Republic of)
550,000 295,000 536
Ethiopia 122,248 249,465 2,041
Mexico 115,551 209,941 1,817
Canada 72,000 169,400 2,353
United States of America
86,441 157,351 1,820
Top 10 countries account for 95% of world production. Source: FAO Stat. 12
USAID
NSF
GRDC
SPG
GCDT
VIR
USA
USA
Australia
Canada
Norway
A multi-institutional, multi-national initiative
National Programs Private foundations
>27 partners in 10 countries
Russia Pakistan HEC
Chickpea production is limited byDrought, heat, disease and low genetic diversity
Terminal drought: year in, year out, most serious constraint.
Drought and heat:
Predispose the crop to disease.
Reduce rates of nitrogen fixation.
Requires a multi-faceted approach.
~95% of variation in the crop was lost during domestication and modern breeding
Drought tolerance
Heat tolerance
Nitrogen fixation
Plant architecture for mechanical harvesting
Seed nutrient density
Fusarium resistance
Pod borer resistance
Improve farmer livelihoods and increase agricultural productivity
For crop improvement, the way forward is genetics
Breeding: novel alleles typically come from domesticated germplasm, … landraces and wild relatives are largely ignored.
Biotechnology: accesses alleles from a broader set of organisms (transgenics), and to modify endogenous genetic components (cisgenics).
We explored chickpea’s center of origin over 56 days
in 2013 and 100 days in 2014/15 at ~50 sites
Egil
1 2
3
4
5
6
C.
arietin
um
C. re
ticula
tum
C. echin
osperm
um
Wild systems: Starting in south-eastern Turkey
~15,000 unique lineages entering into field trials and breeding
• Engage international networks of breeders.
• Combine developing world needs with developed world capacities.
• Massively leverage new funding sources.
Mobilize the genetic capacity of wild relatives
India, Ethiopia, Pakistan, Morocco, Turkey, US, Canada, Australia
Microbes impart functional properties (i.e., “health”) to their plant hosts.
… but we lack a solid understanding of these phenomena
Micronutrient uptake
Drought Tolerance
Phosphate solubilization
Disease Tolerance
Nitrogen Fixation
Micronutrient uptake
Drought Tolerance
Phosphate solubilization
Disease Tolerance
Nitrogen Fixation
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