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Phosphate-deprivation and damage signalling by extracellular ATP

Published version
Peer-reviewed

Type

Article

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Authors

Matthus, Elsa 
Ning, Youzheng 
Shafiq, Fahad 
Davies, Julia M 

Abstract

jats:pPhosphate deprivation compromises plant productivity and modulates immunity. DAMP signalling by extracellular ATP (eATP) could be compromised under phosphate deprivation by the lowered production of cytosolic ATP and the need to salvage eATP as a nutritional phosphate source. Phosphate-starved roots of jats:italicArabidopsis</jats:italic> can still sense eATP, indicating robustness in receptor function. However, the resultant cytosolic free Cajats:sup2+</jats:sup> signature is impaired, indicating modulation of downstream components. This perspective on DAMP signalling by extracellular ATP (eATP) addresses the salvage of eATP under phosphate deprivation and its promotion of immunity, how Cajats:sup2+</jats:sup> signals are generated and how the Cajats:sup2+</jats:sup> signalling pathway could be overcome to allow beneficial fungal root colonization to fulfill phosphate demands. Safe passage for an endophytic fungus allowing root colonization could be achieved by its down-regulation of the Cajats:sup2+</jats:sup> channels that act downstream of the eATP receptors and by also preventing ROS accumulation, thus further impairing DAMP signalling.</jats:p>

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Journal Title

Frontiers in Plant Science

Conference Name

Journal ISSN

1664-462X
1664-462X

Volume Title

13

Publisher

Frontiers Media SA
Sponsorship
Biotechnology and Biological Sciences Research Council (BB/J014540/1)