0000000001045803
AUTHOR
Jean-christophe Avice
showing 3 related works from this author
Phloem: highway to N
2012
National audience
S-34 and N-15 labelling to model S and N flux in plants and determine the different components of N and S use efficiency
2013
International audience; In order to highlight our understanding on ecosystems functioning and resource sharing/competition, either in artificial environment or agrosystems, according to changes in the climatic conditions, it is necessary to measure accurately element fluxes within plants. Stable isotopes allow tracking safely and accurately on a short time frame the behavior of elements in plants. After a short review devoted to isotopic studies of elemental flux within plants, we explain how a direct multiple labelling study might be conducted in a plant, so as to measure over short time nitrogen and sulfur acquisition, and assimilates arising from a labelled source.
Legume adaptation to sulfur deficiency
2014
BAPSPEEAGEAPSIIPM; Because sulfur-deficiency represents an agronomic issue for crops and notably for the quality of legume products, it is necessary to provide sulfur fertilizers according to crop sulfur needs along with improving sulfur use efficiency. To achieve this goal, increased knowledge of how plants respond to sulfur-deficiency is required. We subjected Medicago truncatula, a model legume species, to sulfur deficiency at different developmental stages and compared yield, nutrient allocation and seed traits. We revealed an impressive plasticity of M. truncatula that varied according to the S-stress period and influenced seed composition and germination. Sulfur deficiency at a mid-ve…