The integration of reactive oxygen species (ROS) and calcium signalling in abiotic stress responses

Abstract

Reactive oxygen species (ROS) and calcium (Ca2+) signalling are interconnected in the perception and transmission of environmental signals that control plant growth, development and defence. The concept that systemically propagating Ca2+ and ROS waves function together with electric signals in directional cell‐to‐cell systemic signalling and even plant‐to‐plant communication, is now firmly imbedded in the literature. However, relatively few mechanistic details are available regarding the management of ROS and Ca2+ signals at the molecular level, or how synchronous and independent signalling might be achieved in different cellular compartments. This review discusses the proteins that may serve as nodes or connecting bridges between the different pathways during abiotic stress responses, highlighting the crosstalk between ROS and Ca2+ pathways in cell signalling. We consider putative molecular switches that connect these signalling pathways and the molecular machinery that achieves the synergistic operation of ROS and Ca2+ signals.

Transcriptome Analysis and Reactive Oxygen Species Detection Suggest Contrasting Molecular Mechanisms in Populus canadensis’ Response to Different Formae Speciales of Marssonina brunnea

“…Furthermore, for MU_treat, the genes encoding calcium-dependent protein kinases (CDPKs) and respiratory burst oxidase homologues (RBOHs) were mostly up-regulated (Supplementary Figure S3). As reported, CDPKs and RBOHs were both central factors for plants in triggering ROS release in biotic stress responses and were mainly regulated through calcium signaling [37,38], so we speculated that P. canadensis might proceed along a similar pathway to produce ROS in response to MU penetration.…”

Sound waves alter the viability of tobacco cells via changes in cytosolic calcium, membrane integrity, and cell wall composition

“…As mentioned, the most promising molecular candidate functioning as a second messenger of SW is Ca 2+ . There are interconnections between ROS and Ca 2+ signaling in the perception and transmission of environmental signals in plants [ 64 ]. It has been shown that the activities of certain ROS-generating enzymes are regulated directly or indirectly by the concentration of Ca 2+ [ 65 ].…”

Deciphering metabolomics mechanism explaining the role of secondary metabolites as an aid in improving the agronomic traits and tolerance against several stress

“…All plants adopt nonspeci c strategies, depending on the stress and duration. However, the general mechanism produces ROS and activates the antioxidant defense system [40]. The ROS acts as a signaling molecule that initiates several metabolic processes in plants to combat stress, such as the production of phytohormones, secondary metabolites, activation of some genes and modulation in physio-biochemical processes.…”