Phytochrome-regulated EBL1 contributes to ACO1 upregulation in rice

The 1-aminocyclopropane-1-carboxylate oxidase gene (ACO1) was upregulated in rice (Oryza sativa L.) phyAphyBphyC mutants lacking any phytochrome and containing the GCC box element, a binding site for rice ethylene-responsive element binding protein 1 (OsEREBP1), in its promoter region. Since the OsE...

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Detalles Bibliográficos
Autores principales: Iwamoto, Masao, Takano, Makoto
Formato: Texto
Lenguaje:English
Publicado: Springer Netherlands 2010
Materias:
Original Research Paper
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3005108/
https://www.ncbi.nlm.nih.gov/pubmed/20872166
http://dx.doi.org/10.1007/s10529-010-0405-7
Descripción
Sumario:The 1-aminocyclopropane-1-carboxylate oxidase gene (ACO1) was upregulated in rice (Oryza sativa L.) phyAphyBphyC mutants lacking any phytochrome and containing the GCC box element, a binding site for rice ethylene-responsive element binding protein 1 (OsEREBP1), in its promoter region. Since the OsEREBP1-like gene EBL1 (OsEREBP1-LIKE 1) was significantly downregulated in phyAphyBphyC mutants, EBL1 was suspected to repress ACO1 expression in wild-type plants. However, ACO1 was downregulated in EBL1 RNA interference plants, and the total length of these plants was slightly shorter than that of wild-type plants. This study shows that EBL1 is positively regulated by phytochrome B and associated with ACO1 upregulation.

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