SBP-box/SPL基因在植物表皮毛发育中的作用

The role of SBP-box/SPL genes in the formation and development of trichomes in plants

植物表皮毛作为表皮细胞的特有组织在分类、减少热量和水分散失、抵御昆虫和微生物侵害方面发挥作用,同时也是生长发育时相转换的一个重要指标.而且表皮毛在提高产量等农艺性状方面也发挥重要作用,如棉花纤维组织的产量和品质.SBP-box/SPL基因是植物特有的一个较小的基因家族,在生长发育多个方面扮演重要角色,涉及花期、育性、果实成熟、蓝光信号传导、器官大小等性状.其中,在调控植物"年龄"相关的时相转换中作用明显.本文对表皮毛发育调控中SPL基因功能、涉及的microRNA,及它们与其他表皮毛发育调控途径的关系进行综述,以期为植物表皮毛发育的深入研究及应用奠定基础.

As a special tissue structure of epidermal cells,plant trichomes play crucial roles in plant classification,reduction of heat and moisture loss from plant leaves,plant resistances to insects,microorganisms and abiotic stresses. The trichomes are also important indicators for phase transition of plant growth and development and significantly influence crop important agronomic traits,such as yield and quality of cotton fiber. The SBP-box/SPL genes belong to a relatively small and specific gene family in plants,and play important roles in several processes during plant growth and development,including flowering time,fertility,fruit ripping,blue light signal transduction,and organ size,especially in regulating phase transition during aging. In this paper,the function and mechanism of SPL genes in regulating trichomes development,including microRNA and their relationship with other pathways regulating trichomes development are summarized,which would afford supports in further study on plant trichomes development and application.