Supply of sulphur to S-deficient young barley seedlings restores their capability to cope with iron shortage.

ABSTRACT: The effect of the S nutritional status on a plant's capability to cope with Fe shortage was studied in solution cultivation experiments in barley (Hordeum vulgare L. cv. Europa). Barley is a Strategy II plant and responds to Fe deficiency by secretion of chelating compounds, phytosiderophores (PS). All PS are derived from nicotianamine whose precursor is methionine. This suggests that a long-term supply of an inadequate amount of S could reduce a plant's capability to respond to Fe deficiency by limiting the rate of PS biosynthesis. The responses of barley (Hordeum vulgare L. cv. Europa) plants grown for 12 d on Fe-free nutrient solutions (NS) containing 0 or 1.2 mM SO(4)(2-), was examined after 24 h or 48 h from transfer to NS containing 1.2 mM SO(4)(2-). After the supply of S was restore

SUBMITTER: Astolfi S 

PROVIDER: S-EPMC2814111 | biostudies-literature | 2010 Mar

REPOSITORIES: biostudies-literature