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Curr Opin Plant Biol. 2017 Oct;39:40-49. doi: 10.1016/j.pbi.2017.05.007. Epub 2017 Jun 3.

Novel signals in the regulation of Pi starvation responses in plants: facts and promises.

Author information

1
Department of Plant Molecular Genetics, Centro Nacional de Biotecnología-Consejo Superior de Investigaciones Científicas, 28049 Madrid, Spain.
2
Department of Plant and Soil Sciences, University of Kentucky, Lexington, KY 40546, USA.
3
Department of Plant Molecular Genetics, Centro Nacional de Biotecnología-Consejo Superior de Investigaciones Científicas, 28049 Madrid, Spain. Electronic address: jpazares@cnb.csic.es.

Abstract

Plants have evolved numerous adaptive developmental and metabolic responses to cope with growth in conditions of limited phosphate (Pi). Regulation of these Pi starvation responses (PSR) at the organism level involves not only cellular Pi perception in different organs, but also inter-organ communication of Pi levels via systemic signaling. Here we summarize recent discoveries on Pi starvation sensing and signaling, with special emphasis on structure-function studies that showed a role for inositol polyphosphates (InsP) as intracellular Pi signals, and on genomic studies that identified a large number of mRNAs with inter-organ mobility, which provide an immense source of potential systemic signals in the control of PSR and other responses.

PMID:
28587933
DOI:
10.1016/j.pbi.2017.05.007
[Indexed for MEDLINE]

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