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New Phytol. 2019 Aug 19. doi: 10.1111/nph.16129. [Epub ahead of print]

Identity and functions of inorganic and inositol polyphosphates in plants.

Author information

1
Structural Plant Biology Laboratory, Department of Botany and Plant Biology, University of Geneva, 30 Quai E. Ansermet, Geneva, 1211, Switzerland.

Abstract

Inorganic polyphosphates (polyPs) and inositol pyrophosphates (PP-InsPs) form important stores of inorganic phosphate and can act as energy metabolites and signaling molecules. Here we review our current understanding of polyP and inositol phosphate (InsP) metabolism and physiology in plants. We outline methods for polyP and InsP detection, discuss the known plant enzymes involved in their synthesis and breakdown, and summarize the potential physiological and signaling functions for these enigmatic molecules in plants.

KEYWORDS:

inorganic polyphosphate; inositol pyrophosphates; nutrient signaling; phosphate metabolism; phosphate starvation responses

PMID:
31423587
DOI:
10.1111/nph.16129

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