Xi-Ou Xiao, Wenqiu Lin, Wei Li, Xiaoming Gao, Lingling Lv, Feiyue Ma, Yuge Liu
South Subtropical Crops Research Institute, Chinese Academy of Tropical Agricultural Sciences (CATAS)Zhanjiang, China; Zhanjiang City Key Laboratory for Tropical Crops Genetic ImprovementZhanjiang, China.
Front Plant Sci. 2017 Jan 19;8:17. doi: 10.3389/fpls.2017.00017. eCollection 2017.
The eggplant was mutagenized with ethyl methane sulfonate (EMS) to enhance its genetic variability in our previous paper. In this article, we further analyzed the phenotype of M generation of mutant eggplants. A total of 325 independent M families were investigated for phenotypic variation. In addition to the visible phenotypic variation, chlorogenic acid (CGA) concentrations were analyzed in 26 fruits of mutants with High Performance Liquid Chromatography assay. Seventeen fruits exhibited significantly higher concentrations of CGAs than those in wild-type. The anthocyanin concentration of S9-1, the purple black mutant, was higher than WT, meanwhile, the anthocyanin concentration of L6-4 and U36-1 was lower than WT. Furthermore, our RT-PCR result demonstrated that the expression levels of anthocyanin biosynthetic genes, except for SmPAL, were increased in S9-1, and the regulator was decreased in L6-4 and U36-1 mutants. Together, our data indicated that, M generation showed abundant phenotypic variations and the strong potential usage for next step of breeding and molecular genetic mechanisms in eggplant.
在我们之前的论文中,用甲基磺酸乙酯(EMS)对茄子进行诱变处理以增加其遗传变异性。在本文中,我们进一步分析了突变茄子M代的表型。共对325个独立的M家系进行了表型变异调查。除了可见的表型变异外,还采用高效液相色谱法分析了26个突变体果实中的绿原酸(CGA)浓度。17个果实中CGA的浓度显著高于野生型。紫黑色突变体S9-1的花青素浓度高于野生型,而L6-4和U36-1的花青素浓度低于野生型。此外,我们的RT-PCR结果表明,除SmPAL外,S9-1中花青素生物合成基因的表达水平升高,而在L6-4和U36-1突变体中调控因子的表达水平降低。总之,我们的数据表明,M代表现出丰富的表型变异,在茄子下一步育种和分子遗传机制研究中具有很强的潜在应用价值。