AI Article Synopsis
- Biotic signaling molecules like abscisic acid (ABA) play a crucial role in helping plants respond to abiotic stresses such as drought and high salinity.
- Recent research has uncovered a specific ABA signaling pathway that connects ABA receptors to the closure of stomata, involving interactions with protein phosphatase 2C (PP2C) members.
- In experiments, plants lacking the AIP1 gene showed reduced responsiveness to ABA and glucose when germinating and growing, indicating that AIP1 is a positive regulator in ABA-mediated signaling processes.
Article Abstract
Biotic signaling molecules including abscisic acid (ABA) serve as an integrator of abiotic stress including high salinity and drought. Recent studies have led to the identification of an ABA signaling pathway from the ABA receptor to stomatal closure in response to abiotic stress. ABA is linked to ABA receptors and protein phosphatase 2C (PP2C) members. In this study, we reconstituted the ABA signaling pathway as a protein-protein interaction between the RCAR type receptor and AIP1, which is one of the group A PP2C member. Several ABA receptors interact with AIP1 in an ABA dependent or independent manner. aip1 null mutant plants exhibited reduced sensitivity to ABA and glucose during the seed germination and seedling stage. Taken together, these results demonstrated that AIP1 is associated with ABA-mediated cell signaling and function as positive regulators of ABA.
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| http://dx.doi.org/10.1016/j.plantsci.2012.01.013 | DOI Listing |
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