Os01g44260

OsDfr is a stress-induced gene that produces dihydroflavonol-4-reductase involved in the flavonoid pathway.

Annotated Information

Introduction

Two well-studied pathways associated with stress responses are the abscisic acid (ABA)-mediated abiotic stress response pathway and the ubiquitous flavonoid biosynthetic pathway.One common element between the ABA mediated pathway and the flavonoid pathway is the role of the MYB and MYC class of transcription activators on target gene expression. In Arabidopsis, the Atmyb2 and rd22BP1 genes regulate rd22 gene expression in the ABA-dependent abiotic stress response pathway. In maize, product of the C1-myb gene regulates expression of the flavonoid pathway genes in cooperation with a MYC family protein encoded by the R gene. The flavonoid biosynthetic pathway genes have been well-characterized and assigned with functions in two major cereal crop plants such as maize and rice. The rice flavonoid pathway is reported to respond to biotic and abiotic stress situations. Flavonoid accumulation in response to UV-B, cold, and drought were reported earilier.

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