Related Experiment Video
Updated: Jun 8, 2026

A Strategy to Validate the Role of Callose-mediated Plasmodesmal Gating in the Tropic Response
Published on: April 17, 2016
[Lipid signaling pathways in plants and their roles in response to water constraints]
Anne-Sophie Leprince1, Arnould Savouré
1Laboratoire de Physiologie Cellulaire et Moléculaire des Plantes, UR5 UPMC, EAC7180 CNRS, Université Pierre et Marie Curie P6, 4 place Jussieu, case 156, Paris Cedex 05, France. anne-sophie.leprince@upmc.fr
Abstract:
Plants are sessile organisms that have developed the capacity to detect slight variations of their environment. They are able to perceive these environmental signals and to transduce them by signaling pathways in order to trigger adaptative responses. Lipid signaling elements play a central role in these pathways in plants. A key element is phosphatidic acid (PA), which can be produced by two pathways. In the first one, phospholipids are hydrolysed by phospholipase D (PLD) to release PA. In the second one, PA is produced through the activity of phospholipase C (PLC) to produce diacylglycerol (DAG) which is then phosphorylated by DAG kinase (DAGK). The amount of PA in the cell is regulated by PA kinase, which phosphorylates PA to produce diacylglycerolpyrophosphate (DGPP), considered as a second messenger as well. PLCs play a dual role in cell signaling by regulating the amount of intracellular Ca(2+), another essential second messenger. Phosphoinositides, such as PI3P, PI4P and PI(4,5)P(2), are substrates of PLCs and PLDs and are considered as second messengers also. In this review, we present recent data regarding the specific features of these lipid signaling pathways in plant compared with other eukaryotes.
Related Concept Videos
Cell Signaling in Plants
Responses to Drought and Flooding
Responses to Heat and Cold Stress
Short-distance Transport of Resources
Adaptations that Reduce Water Loss
Responses to Salt Stress

