Iron (Fe), crucial for plant growth, is abundant but poorly available. Plants use specialized mechanisms for Fe uptake, and beneficial microbes enhance this process. This study used *Azospirillum brasilense* mutants (HM053, FP10, *ipdC*) with varying nitrogen fixation and auxin production to investigate Fe uptake in *Zea mays*. Radioactive iron-59 and ICP-MS revealed differences in Fe uptake correlated with mutant function. Radioactive carbon-11 showed altered host carbon resource use, with HM053 significantly increasing root Fe uptake by enhancing <sup>11</sup>C-acidic substrate exudation for Fe-chelation and increasing <sup>11</sup>C partitioning into citrate, nicotianamine, and histidine for Fe translocation.
Publisher
Nature Plants
Published On
Jan 06, 2021
Authors
A. B. Housh, G. Powell, S. Scott, A. Anstaett, A. Gerheart, M. Benoit, S. Waller, A. Powell, J. M. Guthrie, B. Higgins, S. L. Wilder, M. J. Schueller, R. A. Ferrieri
Tags
Iron uptake
Plant growth
Beneficial microbes
Zea mays
Nitrogen fixation
Auxin production
Fe-chelation
Related Publications
Explore these studies to deepen your understanding of the subject.
