Ecophysiological processes underlying mineral nutrition of soybean under individual or combined heat and water stresses

In a context of climate change, with more frequent drought events and heatwaves, it is predicted that soybean yields will drastically decrease in the near future. Soybean being the most widely grown legume crop in the world, there is an urgent need to improve its ability to sustain its growth under such conditions in order to guarantee high levels of productivity. The aim of this study was to explore the influence of heat and/or water stress on soybean growth and its water and mineral nutritions. Two soybean genotypes, displaying contrasted root architectures during their vegetative stage were grown under controlled conditions in the 4PMI high-throughput phenotyping platform where either op…

Gestion du fonctionnement des communautés microbiennes du sol pour réduire leurs émissions du gaz à effet de serre N2O

Greenhouse gas emissions (CO2 & N2O) of an acid soil after adding liming products, observed at 2 experimental scales (in situ and undisturbed cylinders)

Exploring architectural traits and ecophysiological responses in soybean under heat and water stress: implications for climate change adaptation

In the context of climate change, characterized by increasingly frequent droughts and heat waves, it is anticipated that the global soybean yields, the most extensively grown legume, will experience a significant decline in the foreseeable future.. There is thus an urgent need to improve its ability to maintain growth and productivity under such conditions. The objective of this study was to explore which plant traits make soybeans more resilient to heat and/or water stress, with a focus on plant architecture. For this purpose, two soybean genotypes, already shown to have contrasted root architecture (Maslard et al., 2021) were grown under controlledconditions in the high-throughput phenoty…

Defining the conditions of liming products application to promote nitrous oxide reduction in an acidic agricultural soil

With a lifetime of more than 100 years in the atmosphere, N2O is an important greenhouse gas with a global warming potential (GWP) of ~ 300 for a 100-year timescale that also takes part in the destruction of the ozone layer (Ravishankara et al., 2009). While N2O emissions are projected to increase in the coming years (Aneja et al., 2019), the promotion of the N2O reduction to N2 in soils could appear as a possible solution for mitigating soil N2O emission (Hénault et al., 2019). The N2O reduction path appears to be mainly driven by the soils’ pH with a progressive inhibition when pH is lower than 6.8. The aim of the proposed study was to test during laboratory experiments the time and the d…