Organelles-nucleus-plasmodesmata signaling (ONPS): an update on its roles in plant physiology, metabolism and stress responses

Current Opinion in Plant Biology
Mohammad F Azim, Tessa M Burch-Smith

Abstract

Plasmodesmata allow movement of metabolites and signaling molecules between plant cells and are, therefore, critical players in plant development and physiology, and in responding to environmental signals and stresses. There is emerging evidence that plasmodesmata are controlled by signaling originating from other organelles, primarily the chloroplasts and mitochondria. These signals act in the nucleus to alter expression of genetic pathways that control both trafficking via plasmodesmata and the plasmodesmatal pores themselves. This control circuit was dubbed organelle-nucleus-plasmodesmata signaling (ONPS). Here we discuss how ONPS arose during plant evolution and highlight the discovery of an ONPS-like module for regulating stomata. We also consider recent findings that illuminate details of the ONPS circuit and its roles in plant physiology, metabolism, and defense.

Citations

Jun 18, 2021·Frontiers in Plant Science·Wilson Horner, Jacob O Brunkard
Jun 22, 2021·Frontiers in Plant Science·Arya Bagus Boedi IswantoSang Hee Kim
Jul 14, 2021·The New Phytologist·Elina Welchen, Daniel H Gonzalez

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