InterPro domain: IPR044676

This entry represents a group of plant MYB-like transcription factors, including EOBI and EOBII from Petunia hybrida. EOBII controls the production of volatile organic compounds (VOCs), including floral volatile benzenoids and phenylpropanoids (FVBP), in flowers of fragrant cultivars (e.g. cv. Mitchell and cv. V26) by regulating the expression of ODO1 and EOBI, key regulators of the shikimate pathway, and of several biosynthetic floral scent-related genes including IGS, PAL2 and CFAT [ 1 , 2 , 3 ]. EOBII binds to and activates the ODO1 and EOBI promoters via MYB binding sites (MBS) 5'-AAACCTAAT-3' and 5'-CTAACT-3' [ 4 , 4 , 5 , 5 ].

Other MYB-like transcription factors included in this entry include MYB21/MYB24/MYB108 from Arabidopsis [ 5 , 6 ] and MYB2/JAMYB from rice [ 7 , 8 ]. They are involved in different processes, such as abiotic stress responses, defense responses, plant development and photomorphogenesis.

1. The transcription factor EMISSION OF BENZENOIDS II activates the MYB ODORANT1 promoter at a MYB binding site specific for fragrant petunias. Plant J 67, 917-28
2. EOBII, a gene encoding a flower-specific regulator of phenylpropanoid volatiles' biosynthesis in petunia. Plant Cell 22, 1961-76
3. The R2R3-MYB-like regulatory factor EOBI, acting downstream of EOBII, regulates scent production by activating ODO1 and structural scent-related genes in petunia. Plant Cell 24, 5089-105
4. A model for combinatorial regulation of the petunia R2R3-MYB transcription factor ODORANT1. Plant Signal Behav 7, 518-20
5. The Jasmonate-ZIM domain proteins interact with the R2R3-MYB transcription factors MYB21 and MYB24 to affect Jasmonate-regulated stamen development in Arabidopsis. Plant Cell 23, 1000-13
6. Regulation of ABA dependent wound induced spreading cell death by MYB108. New Phytol 200, 634-40
7. A R2R3-type MYB gene, OsMYB2, is involved in salt, cold, and dehydration tolerance in rice. J Exp Bot 63, 2541-56
8. A novel jasmonic acid-inducible rice myb gene associates with fungal infection and host cell death. Mol Plant Microbe Interact 14, 527-35