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Root-to-shoot signalling: integration of diverse molecules, pathways and functions

Citation

Shabala, S and White, RG and Djordjevic, MA and Ruan, Y-L and Mathesius, U, Root-to-shoot signalling: integration of diverse molecules, pathways and functions, Functional Plant Biology, 43, (2) pp. 87-104. ISSN 1445-4408 (2016) [Refereed Article]

Copyright Statement

Copyright 2016 CSIRO

DOI: doi:10.1071/FP15252

Abstract

Plant adaptive potential is critically dependent upon efficient communication and co-ordination of resource allocation and signalling between above- and below-ground plant parts. Plant roots act as gatekeepers that sense and encode information about soil physical, chemical and biological factors, converting them into a sophisticated network of signals propagated both within the root itself, and also between the root and shoot, to optimise plant performance for a specific set of conditions. In return, plant roots receive and decode reciprocal information coming from the shoot. The communication modes are highly diverse and include a broad range of physical (electric and hydraulic signals, propagating Ca2+ and ROS waves), chemical (assimilates, hormones, peptides and nutrients), and molecular (proteins and RNA) signals. Further, different signalling systems operate at very different timescales. It remains unclear whether some of these signalling systems operate in a priming mode(s), whereas others deliver more specific information about the nature of the signal, or whether they carry the same ‘weight’. This review summarises the current knowledge of the above signalling mechanisms, and reveals their hierarchy, and highlights the importance of integration of these signalling components, to enable optimal plant functioning in a dynamic environment.

Item Details

Item Type:Refereed Article
Keywords:assimilates, calcium waves, development, electric signals, hormones, hydraulic signalling, miRNA, nodulation, nutrients, peptides, proteins, ROS, stress, sugars, systemic response
Research Division:Biological Sciences
Research Group:Plant Biology
Research Field:Plant Physiology
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Environmental Sciences
Author:Shabala, S (Professor Sergey Shabala)
ID Code:107578
Year Published:2016
Web of Science® Times Cited:12
Deposited By:Tasmanian Institute of Agriculture
Deposited On:2016-03-18
Last Modified:2017-11-02
Downloads:0

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