Characterizing the crucial components of iron homeostasis in the maize mutants ys1 and ys3.

ABSTRACT: To acquire iron (Fe), graminaceous plants secrete mugineic acid family phytosiderophores through the phytosiderophore efflux transporter TOM1 and take up Fe in the form of Fe(III)-phytosiderophore complexes. Yellow stripe 1 (ys1) and ys3 are recessive mutants of maize (Zea mays L.) that show typical symptoms of Fe deficiency, i.e., interveinal chlorosis of the leaves. The ys1 mutant is defective in the Fe(III)-phytosiderophore transporter YS1 and is therefore unable to take up Fe(III)-phytosiderophore complexes. While the ys3 mutant has been shown to be defective in phytosiderophores release, the causative gene has not been identified. The present study was performed to characterize the expression profiles of the genes in ys1 and ys3 mutants to extend our understanding of Fe homeostasis in

SUBMITTER: Nozoye T 

PROVIDER: S-EPMC3648533 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature