Abscisic acid does not disrupt either the Arabidopsis FCA-FY interaction or its rice counterpart in vitro.
We examined the effect of (+)-ABA on the in vitro interaction of rice FCA and FY homologs, OsFCA and OsFY. From this analysis, we found no disruption of the OsFCA-OsFY complexes by ABA treatment. This result prompted us to examine the effect of ABA on the FCA-FY interaction. In these experiments, we could not reproduce the inhibitory effect of (+)-ABA on the interaction between FCA and FY. Based on these combined results, we believe that the inhibitory effect of (+)-ABA on the FCA-FY interaction should be cautiously reconsidered.
Jang
Yun Hee
YH
Plant Signaling Network Research Center, School of Life Sciences and Biotechnology, Korea University, Seoul, 136-701, Korea.
Lee
Jeong Hwan
JH
Kim
Jeong-Kook
JK
D000040:Abscisic Acid / Q000494:pharmacology*; D017360:Arabidopsis / Q000187:drug effects / Q000235:genetics / Q000378:metabolism*; D029681:Arabidopsis Proteins / Q000235:genetics / Q000378:metabolism*; D018506:Gene Expression Regulation, Plant; D017343:Genes, Plant; D012275:Oryza / Q000187:drug effects / Q000235:genetics / Q000378:metabolism*; D010937:Plant Growth Regulators / Q000494:pharmacology; D016601:RNA-Binding Proteins / Q000235:genetics / Q000378:metabolism*; D039221:mRNA Cleavage and Polyadenylation Factors / Q000235:genetics / Q000378:metabolism*
D029681:Arabidopsis Proteins; C518020:FY protein, Arabidopsis; C106535:Flowering time control protein FCA, Arabidopsis; D010937:Plant Growth Regulators; D016601:RNA-Binding Proteins; D039221:mRNA Cleavage and Polyadenylation Factors; D000040:Abscisic Acid