表皮毛是植物地上组织表皮细胞分化出的特殊结构。表皮毛可以作为物理屏障，或分泌次级代谢产物抵御病虫侵害。表皮毛的发育和分布是植物生长发育到不同阶段的标志。芒刺等特化的表皮毛利于种子传播，保护种子免受动物取食。研究表皮毛发育机制具有重要的科学意义和应用价值。..植物激素茉莉素诱导植物表皮毛形成。我们的研究发现，茉莉素诱导JAZ蛋白降解，释放WD-repeat/bHLH/MYB复合体，促进表皮毛形成。但还不清楚WD-repeat/bHLH/MYB复合体是否与其它蛋白互作调控茉莉素诱导的表皮毛形成。申请者拟筛选WD-repeat/bHLH/MYB复合体互作蛋白，以获得茉莉素信号传导通路新组分，深入揭示茉莉素诱导表皮毛形成的分子机理。该研究揭示的分子机制将有重要科学价值，对指导农业生产有重要意义。

Trichomes are fine structures that are differentiated from epidermal cells of the plant aerial part. The trichomes function as barriers or secrete secondary metabolites to protect plant against herbivores, pathogens and UV irradiation. The trichomes (or awns) in seeds can protect seeds from feeding by animals, and assist seeds dispersal. In addition, the cotton fibers that are derived from trichomes have important economical and social values. Therefore, it is scientifically valuable to investigate the molecular mechanism for trichome development...The plant hormone jasmonates (JAs) induce trichome formation in plant. Previously, we demonstrated that the Jasmonate ZIM-domain (JAZ) proteins interact with the WD-repeat/bHLH/MYB complex to inhibit trichome development. In response to JA signals, the F-box protein Coronatine Insensitive1 (COI1) interact with JAZ proteins for ubiquitination and subsequent degradation via the 26S proteasome; therefore, the WD-repeat/bHLH/MYB complex are released to activate expression of Glabra2 for trichome initiation...So far, whether additional components interact with the WD-repeat/bHLH/MYB complex to modulate JA-induced trichome initiation remains unknown. The aim of the project is to screen interaction proteins of the WD-repeat/bHLH/MYB complex, and reveal the molecular mechanisms for the novel components in JA-induced trichome initiation. These novel findings possess important scientific value and application prospects.