Storage and Mobilization of Carbon Reserves in Walnut and Its Consequences on the Water Status During Winter

Carbon-based models of individual tree growth: A critical appraisal

“…Nevertheless, the functional role of reserve dynamics should not be underestimated. Indeed, carbon reserves are a means by which trees cope with environmental hazards [6,58,136]. More generally, reserve dynamics should be considered when analysing tree ecological plasticity or adaptation to particular environments.…”

Walnut (Juglans spp.) ecophysiology in response to environmental stresses and potential acclimation to climate change

“…1 Variation of carbon in an English walnut seedling (J. regia L.) and its maternal seed (a) and relative distribution of carbon in various organs of an English walnut seedling (b) under controlled conditions (22°C, 12 h) during the first 2 months of development. Each value is the mean obtained from the combustion of dry matter of a set of five plant samples (Maillard et al 1994b, by permission of Oxford University Press) source of carbohydrates for subsequent development (Lacointe 1989;Lacointe et al 1993;Chenevard et al 1994;Maillard et al 1994a, b).…”

“…In deciduous angiosperms, NSC levels are never fully depleted and are often at a maximum in late summer and early autumn (Millard and Grelet 2010). In 3-year-old English walnut, C accumulated as starch in the taproot in late summer and fall can be hydrolyzed to sugar in winter and remobilized by growing organs in spring (Frossard and Lacointe 1988;Lacointe et al 1993). Lacointe et al (1995) also reported that recent (up to 5 days old) C fluxes allocated toward respiration did not exceed 25% of total plant respiration as measured in August and October using 14 CO 2 labeling in young English walnut trees.…”