As sessile organisms, plants must properly coordinate their growth and developmental programs with changes in the environment. The integration of exogenous environmental cues with endogenous plant hormone responses often occurs through physical protein-protein interactions (PPIs). However, a comprehensive PPI network that mediates environmental and hormonal responses has not been established. In this study, we initially cloned 113 phytohormone-related genes and 29 light signaling components of and then individually tested their mutual interactions (in total 2,655 tests) using a yeast-two-hybrid approach to ultimately identify 141 interactions. Based on these interaction results, we next revealed the signaling cross talk between jasmonate and abscisic acid by characterizing the JAZ1-PYL4 and JAZ1-ABI1 interactions. Thus, we generated a useful resource for the community to explore the molecular mechanisms underlying signaling interactions between plant hormones and/or with light.
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| http://dx.doi.org/10.1002/pld3.228 | DOI Listing |
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