| Gene Information | |
| NCBI Gene ID | 818303 |
| Symbol | TTG2 |
| LocusTag | AT2G37260 |
| Synonyms | ATWRKY44|F3G5.5|F3G5_5|TRANSPARENT TESTA GLABRA 2|WRKY44 |
| Description | TTG2 (TRANSPARENT TESTA GLABRA 2); transcription factor |
| Gene Type | protein-coding |
| Pattern | TTG2|AT2G37260|ATWRKY44|F3G5.5|F3G5_5|TRANSPARENT TESTA GLABRA 2|WRKY44|TTG2 (TRANSPARENT TESTA GLABRA 2); transcription factor|TTG2 (TRANSPARENT TESTA GLABRA 2) |
| Corresponding sequence in Trichome EST library | AM793049 BI264308 BI309899 BI310436 BI310719 CF068874 CX541097 DW002320 EH367381 EH371019 EX519844 FG150054 FG150127 FS377817 TCHL54425 TCMT48150 TCMT58144 |
| Reference |
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Arabidopsis TRANSPARENT TESTA GLABRA2 is directly regulated by R2R3 MYB transcription factors and is involved in regulation of GLABRA2 transcription in epidermal differentiation. Ishida T, Hattori S, Sano R, Inoue K, Shirano Y, Hayashi H, Shibata D, Sato S, Kato T, Tabata S, Okada K, Wada T. Plant Cell. 2007 Aug;19(8):2531-43. ...... Arabidopsis thaliana TRANSPARENT TESTA GLABRA2 (TTG2) encodes a WRKY transcription factor and is expressed in young leaves, trichomes, seed coats, and root hairless cells. An examination of several trichome and root hair mutants indicates that MYB and bHLH genes regulate TTG2 ...... |
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...... Two MYB binding sites in the TTG2 5' regulatory region act as cis regulatory elements and as direct targets of R2R3 MYB transcription factors such as WEREWOLF, GLABRA1, and TRANSPARENT TESTA2. Mutations in TTG2 cause phenotypic defects in trichome development and seed color pigmentation. Transgenic plants expressing a chimeric repressor version of the TTG2 protein (TTG2:SRDX) showed defects in trichome formation, anthocyanin accumulation, seed ...... |
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TRANSPARENT TESTA GLABRA2, a trichome and seed coat development gene of Arabidopsis, encodes a WRKY transcription factor. Johnson CS, Kolevski B, Smyth DR. Plant Cell. 2002 Jun;14(6):1359-75. ...... Mutants of a new gene, TRANSPARENT TESTA GLABRA2 (TTG2), show disruptions to trichome development and to tannin and mucilage production in the seed coat. The gene was tagged by the endogenous transposon Tag1 and shown to encode a WRKY transcription factor. It is the first member of this ...... |
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...... is strongly expressed in trichomes throughout their development, in the endothelium of developing seeds (in which tannin is later generated) and subsequently in other layers of the seed coat, and in the atrichoblasts of developing roots. TTG2 acts downstream of the trichome initiation genes TTG1 and GLABROUS1, although trichome expression of TTG2 continues to occur if they are inactivated. Later, TTG2 shares functions with GLABRA2 in controlling trichome outgrowth. In the seed ...... |