Page 54 - TriSociety Virtual Event

Abstracts

mutation is probably the result of continuous P V VARA PRASAD Feed the Future Sustainable role of the cell wall as a barrier to both
selection of plants already resistant due to a Intensification Innovation Lab, Kansas State abiotic and biotic stress
single mutation Our results illustrate the need University, Manhattan, Kansas 66506, USA. A FORAND Q LI S WANG Y WEI S GHOSH
for diversified weed management strategies in AND K K TANINO Department of Plant Sci­
crops where herbicide options are limited Grand challenge of increasing productivity ence, University of Saskatchewan, 51 Campus
of nutritious and safe food under climate Drive, Saskatoon, SK, S7N 5A8, Canada; (Q.L.,
88. Response of growth, yield and quality crisis requires a systems and transdisciplinar y Y.W.) Department of Biology, University of
of edible­podded snow peas to supple­ approach towards agri­food systems Inno­ Saskatchewan, 112 Science Place, Saskatoon,
mental light­emitting diode lighting vation is to key to improve global food and SK, S7N 5C8, Canada; (S.W.) Department of
during winter greenhouse production nutritional security and resilience of agricul­ Biochemistry, Microbiology and Immunolo­
ture and people Climate extremes negatively gy, University of Saskatchewan, 112 Science
Y KONG and Y ZHENG School of Environmen­ impacts productivity and quality of grain and Place, Saskatoon, SK, S7N 5C8, Canada; (S.G.)
tal Sciences, University of Guelph, 50 Stone horticultural crops Climate change influences Department of Food and Bioproduct Sciences,
Road East, Guelph, ON N1G 2W1, Canada. occurrence intensity and spread of pests and University of Saskatchewan, 51 Campus Drive,
Low natural light level during winter months disease There is an urgent need to develop Saskatoon, SK, S7N 5A8, Canada.
is a ma or limiting factor for greenhouse crop and scale climate smart agricultural practices
production in northern regions To determine to improve resilience of cropping systems Climate change continues to threaten plant
the efects of supplemental lighting (SL) on through adaptation and mitigation strategies populations as the frequency and severity
winter greenhouse production of edible ­po­ and resilience people through building social of stresses mount Structural modifications
dded snow peas (Pisum sativum L ) plant capital and support system Innovations in the cell wall through pectin cross linkages
growth pod yield and quality were investi­ should emphasiZe broader one­health (soil between calcium ions and boric acid may be
gated under SL at a photosynthetic photon plant animal and human) with end­to­end key to mitigating damage caused by stress
flux density (PPFD) of 50 80 110 and 140 programing (production to consumption) The ob ective of this research was to examine
fmol�m �s plus a no­SL control treatment and circularity (recycling waste) in agri­food how changes in calcium and boron within
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inside a Canadian greenhouse from January systems Our approach must positively impact various plant spp may translate to increased
to March Light­emitting diodes with a red blue productivity nutrition health and environ­ resistance to multiple stresses Calcium was
PPFD ratio of 4 1 and a 16­h photoperiod mental outcomes Sustainable agricultural found to significantly (p<0 05) reduce water
were used for the lighting treatments During intensification (SAI) provides a platform that loss in high methylated citrus pectin used
the trial period the average natural daily light focuses on increasing agricultural productivity as a model for pectin in Allium However the
integral (DLI) inside the greenhouse was 6 6 and eficiency from existing farmland without eficacy of calcium in mitigating drought stress
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mol�m �d and the average daily tempera­ any adverse environmental impacts It provi­ in Allium was inconsistent between species
ture was around 13�C Comparing with the des a framework to measure impacts across and lengths of dehydration Nonetheless
control all SL treatments increased pod yield key domains (productivity environment eco­ A. fistulosum (freeZing tolerant) was signifi­
(g�plant ) and promoted plant growth as de­ nomic social and human condition) to better cantly (p<0 05) more resistant to water loss
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monstrated by faster main stem extension and understand the complexities in the system compared to A. cepa (freeZing susceptible)
greater aerial biomass Also total pod yield Innovations in genetic agro­ecological and Moreover we found BOR1 a boron transporter
(g�plant or no �plant ) and some growth social components of SAI along with creating in Arabidopsis impacts tolerance to stress
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traits (e g stem diameter branch number leaf enabling environments and building social ca­ caused by dehydration and Colletotrichum
thickness and leaf chlorophyll content) were pital is a prerequisite for success This requires higginsianum a hemibiotrophic pathogen
proportional to supplemental PPFD within collaboration between multiple disciplines that uses physical pressure to circumvent the
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the range of 0-140 fmol�m �s However SL organiZations stakeholders private­sector and cell wall bor1 had a higher rate of water loss
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levels 50-80 fmol�m �s corresponding to a donors Current investments in innovation in and percent electrolyte leakage following
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total (natural � supplemental) DLI of 9 4-11 1 SAI in the Global South is extremely low and dehydration stress Furthermore the addition
mol�m �d resulted in the best pod quality requires transformation to meet sustainable of boron to pure pectin significantly (p<0 05)
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based on evaluations of individual fresh mass development goals and support climate reduced water loss In addition bor1 had the
length soluble solids content succulence action Present status innovation gaps and most rapid rate of Colletotrichum higginsia­
and firmness Therefore a total DLI ranging future opportunities will be presented and num infection Lesions were generally larger
between 9 4 and 11 1 mol�m �d can be discussed and appeared �48hr earlier In conclusion
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recommended as a target light level for winter response to stress is complex and pectin
greenhouse production of pea pods using SL Session 17. Student oral competi­ modifications are likely not a silver bullet
under environmental conditions like this trial tion: Plant Health and Resilience Nonetheless our research demonstrates con­
nections between dehydration stress freeZing
89. Innovations in sustainable agricultural 90. Building a better cell wall­ How struc­ stress and Colletotrichum higginsianum and
intensification to address climate change, tural modifications in pectin impact the is indicative that the cell wall and pectin likely
food security, nutrition and resilience play a critical role in defence
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