| http://purl.uniprot.org/citations/19192205 | http://www.w3.org/1999/02/22-rdf-syntax-ns#type | http://purl.uniprot.org/core/Journal_Citation |
| http://purl.uniprot.org/citations/19192205 | http://www.w3.org/2000/01/rdf-schema#comment | "Release of dormancy and induction of seed germination are complex traits finely regulated by hormonal signals and environmental cues such as temperature and light. The Red (R):Far-Red (FR) phytochrome photoreceptors mediate light regulation of seed germination. We investigated the possible involvement of heterotrimeric G-protein complex in the phytochrome signaling pathways of Arabidopsis thaliana seed germination. Germination rates of null mutants of the alpha (Galpha) and beta (Gbeta) subunits of the G-protein (Atgpa1-4 and agb1-2, respectively) and the double mutant (agb1-2/gpa1-4) are lower than the wildtype (WT) under continuous or pulsed light. The Galpha and Gbeta subunits play a role in seed germination under hourly pulses of R lower than 0.1 micromol m(-2) s(-1) whereas the Gbeta subunit plays a role in higher R fluences. The germination of double mutants of G-protein subunits with phyA-211 and phyB-9 suggests that AtGPA1 seems to act as a positive regulator of phyA and probably phyB signaling pathways, while the role of AGB1 is ambiguous. The imbibition of seeds at 4 degrees C and 35 degrees C alters the R and FR light responsiveness of WT and G-protein mutants to a similar magnitude. Thus, Galpha and Gbeta subunits of the heterotrimeric G-protein complex modulate light induction of seed germination by phytochromes and are dispensable for the control of dormancy by low and high temperatures prior to irradiation. We discuss the possible indirect role of the G-protein complex on the phytochrome-regulated germination through hormonal signaling pathways."xsd:string |
| http://purl.uniprot.org/citations/19192205 | http://purl.org/dc/terms/identifier | "doi:10.1111/j.1751-1097.2008.00505.x"xsd:string |
| http://purl.uniprot.org/citations/19192205 | http://purl.uniprot.org/core/author | "Jones A.M."xsd:string |
| http://purl.uniprot.org/citations/19192205 | http://purl.uniprot.org/core/author | "Botto J.F."xsd:string |
| http://purl.uniprot.org/citations/19192205 | http://purl.uniprot.org/core/author | "Ibarra S."xsd:string |
| http://purl.uniprot.org/citations/19192205 | http://purl.uniprot.org/core/date | "2009"xsd:gYear |
| http://purl.uniprot.org/citations/19192205 | http://purl.uniprot.org/core/name | "Photochem Photobiol"xsd:string |
| http://purl.uniprot.org/citations/19192205 | http://purl.uniprot.org/core/pages | "949-954"xsd:string |
| http://purl.uniprot.org/citations/19192205 | http://purl.uniprot.org/core/title | "The heterotrimeric G-protein complex modulates light sensitivity in Arabidopsis thaliana seed germination."xsd:string |
| http://purl.uniprot.org/citations/19192205 | http://purl.uniprot.org/core/volume | "85"xsd:string |
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