Tomato (Solanum lycopersicum) Homologs of TRIPTYCHON (SlTRY) and GLABRA3 (SlGL3) are involved in anthocyanin accumulation
Tomato (Solanum lycopersicum) Homologs of TRIPTYCHON (SlTRY) and GLABRA3 (SlGL3) are involved in anthocyanin accumulation
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DOI：
10.4161/psb.24575
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发表时间：
2013-04
影响因子：
2.9
通讯作者：
R. Tominaga-Wada;Y. Nukumizu;T. Wada
中科院分区：
文献类型：
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作者：
R. Tominaga-Wada;Y. Nukumizu;T. Wada
在拟南芥中，CPC样MYB转录因子[CAPRICE (CPC), tritychon (TRY)， TRY和CPC的ENHANCER OF TRY和CPC 1,2,3 /CPC- like myb3 (ETC1, ETC2, ETC3/CPL3), TRICHOMELESS 1,2 /CPC- like myb3 (TCL1, TCL2/CPL4)]和bHLH转录因子[GLABRA3 （GL3）和GLABRA3的ENHANCER OF GLABRA3 (EGL3)]是毛状体起始和根毛分化的中心调控因子。通过将番茄同源基因SlTRY （TRY）和SlGL3 （GL3）转化到拟南芥中，我们发现SlTRY抑制了毛状体的形成，增强了根毛分化。这些结果表明，番茄和拟南芥在表皮细胞分化过程中部分使用相似的转录因子，而cpc样的R3 MYB可能是植物毛状体和根毛发育的关键共同调节因子。CPC和GL3也参与了花青素的生物合成。在CPC::SlTRY和GL3::SlGL3转基因植株中，花青素的积累受到抑制，表明SlTRY和SlGL3可以影响花青素色素的合成。
In Arabidopsis thaliana the CPC-like MYB transcription factors [CAPRICE (CPC), TRIPTYCHON (TRY), ENHANCER OF TRY AND CPC 1, 2, 3/CPC-LIKE MYB 3 (ETC1, ETC2, ETC3/CPL3), TRICHOMELESS 1, 2/CPC-LIKE MYB 4 (TCL1, TCL2/CPL4)] and the bHLH transcription factors [GLABRA3 (GL3) and ENHANCER OF GLABRA 3 (EGL3)] are central regulators of trichome initiation and root-hair differentiation. By transforming the tomato orthologous genes SlTRY (TRY) and SlGL3 (GL3) into Arabidopsis, we demonstrated that SlTRY inhibited trichome initiation and enhanced root-hair differentiation. These results suggest that tomato and Arabidopsis partially use similar transcription factors for epidermal cell differentiation, and that a CPC-like R3 MYB may be a key common regulator of plant trichome and root-hair development. CPC and GL3 are also known to be involved in anthocyanin biosynthesis. Here, we show that anthocyanin accumulation was repressed in the CPC::SlTRY and GL3::SlGL3 transgenic plants, suggesting that SlTRY and SlGL3 can influence anthocyanin pigment synthesis.