One way. Or another? Iron uptake in plants

Détails bibliographiques
Publié dans:	The New phytologist. - 1990. - 214(2017), 2 vom: 15. Apr., Seite 500-505
Auteur principal:	Tsai, Huei-Hsuan (Auteur)
Autres auteurs:	Schmidt, Wolfgang
Format:	Article en ligne
Langue:	English
Publié:	2017
Accès à la collection:	The New phytologist
Sujets:	Journal Article Review cell morphogenesis coumarin iron uptake phenylpropanoids phosphate deficiency root hairs Phosphates Iron E1UOL152H7

Description
Résumé:	© 2017 The Authors. New Phytologist © 2017 New Phytologist Trust. Iron (Fe) and phosphorus (P), the latter taken up by plants as phosphate (Pi), are two essential nutrients that determine species distribution and often limit crop yield as a result of their low availability in most soils. Pi-deficient plants improve the interception of Pi by increasing the density of root hairs, thereby expanding the volume of soil to be explored. The increase in root-hair frequency results mainly from attenuated primary root growth, a process that was shown to be dependent on the availability of external Fe. Recent data support a hypothesis in which cell elongation during Pi starvation is tuned by depositing Fe in the apoplast of cortical cells in the root elongation zone. Uptake of Fe under Pi starvation appears to proceed via an alternative, as yet unidentified, route that bypasses the default Fe transporter. Fe deposits acquired through this noncanonical Fe-uptake pathway compromises cell-to-cell communication that is critical for proper morphogenesis of epidermal cells and leads to shorter cells and higher root-hair density. An auxiliary Fe-uptake system might not only be crucial for recalibrating cell elongation in Pi-deficient plants but may also have general importance for growth on Pi- or Fe-poor soils by balancing the Pi and Fe supply
Description:	Date Completed 22.02.2018 Date Revised 30.09.2020 published: Print-Electronic Citation Status MEDLINE
ISSN:	1469-8137
DOI:	10.1111/nph.14477