ARF
Brief Introduction
- The plant hormone auxin, typified by indole-3-acetic acid (IAA), regulates a variety of physiological processes, including tropic responses, apical dominance, lateral root initiation, vascular differentiation, embryo patterning, and shoot elongation.[1][2][3]
- Auxin enhances the transcription of several classes of early genes, such as the Aux/IAA, Gretchen Hagen3 (GH3), and SMALL AUXIN UP RNA (SAUR) gene family members (Abel and Theologis, 1996), it regulates plant physiology by modulating the interaction of transcription factors with auxin response elements.[1][2]
- Auxin response factors (ARFs) are transcription factors that bind with specificity to TGTCTC-containing auxin response elements (AuxREs) found in promoters of primary/early auxin response genes and mediate responses to the plant hormone auxin[1][2].The ARF genes are represented by a large multigene family in plants[1]. Through the Genome-wide analysis of the auxin response factors (ARF) gene family in Japonica(by Dekai Wang et al.) and Indica(by RiceWiki Curation Team),25 and 24 ARF genes were identified respectively[1].
- Pfam: PF06507
Japonica Group
Indica Group
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Wang D, Pei K, Fu Y, et al. Genome-wide analysis of the auxin response factors (ARF) gene family in rice (Oryza sativa)[J]. Gene, 2007, 394(1): 13-24.
- ↑ 2.0 2.1 2.2 Okushima Y, Overvoorde P J, Arima K, et al. Functional genomic analysis of the AUXIN RESPONSE FACTOR gene family members in Arabidopsis thaliana: unique and overlapping functions of ARF7 and ARF19[J]. The Plant Cell Online, 2005, 17(2): 444-463.
- ↑ Plant hormones: physiology, biochemistry and molecular biology[M]. Dordrecht, The Netherlands: Kluwer Academic, 1995.
