biostudies-literatureUnknown10Larmure AInstitut National de la Recherche AgronomiqueHigher temperatures induced by the on-going climate change are a major cause of yield reduction in legumes. Pea (<i>Pisum sativum</i> L.) is an important annual legume crop grown in temperate regions for its high seed nitrogen (N) concentration. In addition to yield, seed N amount at harvest is a crucial characteristic because pea seeds are a source of protein in animal and human nutrition. However, there is little knowledge on the impacts of high temperatures on plant N partitioning determining seed N amount. Therefore, this study investigates the response of seed dry matter and N fluxes at the whole-plant level (plant N uptake, partitioning in vegetative organs, remobilization, and accumulation in seeds) to a range of air temperature (from 18.4 to 33.2°C) during the seed-filling-period. Frontiers in plant science1608https://www.ebi.ac.uk/biostudies/studies/S-EPMC6934051biostudies-literatureHigh Temperatures During the Seed-Filling Period Decrease Seed Nitrogen Amount in Pea (<i>Pisum sativum</i> L.): Evidence for a Sink Limitation.PMC6934051Larmure AMunier-Jolain NGfalseHigh Temperatures During the Seed-Filling Period Decrease Seed Nitrogen Amount in Pea (<i>Pisum sativum</i> L.): Evidence for a Sink Limitation.Higher temperatures induced by the on-going climate change are a major cause of yield reduction in legumes. Pea (<i>Pisum sativum</i> L.) is an important annual legume crop grown in temperate regions for its high seed nitrogen (N) concentration. In addition to yield, seed N amount at harvest is a crucial characteristic because pea seeds are a source of protein in animal and human nutrition. However, there is little knowledge on the impacts of high temperatures on plant N partitioning determining seed N amount. Therefore, this study investigates the response of seed dry matter and N fluxes at the whole-plant level (plant N uptake, partitioning in vegetative organs, remobilization, and accumulation in seeds) to a range of air temperature (from 18.4 to 33.2°C) during the seed-filling-period. 2019-01-01T00:00:00Z20192025-04-05T16:21:01.414Z2020-05-22T07:38:49ZS-EPMC69340513192125410.3389/fpls.2019.01608