摘要:[目的]探讨转录因子SPL9在葡萄果实发育过程中的作用。[方法]以“藤稔”葡萄为材料,结合 qRT-PCR 技术手段、番茄瞬时转基因等方法阐释SPL(SQUAMOSA promoter binding protein-like) 转录因子基因SPL9调控葡萄果实发育成熟的分子机制。通过PCR的方法从葡萄品种“藤稔”果实中克隆出SPL9基因的 cDNA 全长序列,并通过qRT-PCR分析SPL9在葡萄不同生长时期表达量,并进行了SPL9的植物双元表达载体的构建和番茄基因瞬时表达的实验。[结果]结果表明,在葡萄的不同生长时期SPL9的表达量随着果实发育不断的增加。通过番茄瞬时表达技术表明SPL9参与了果实的发育上色成熟进程,推测SPL9对葡萄果实的生长发育具有重要的调控作用。[结论]转录因子SPL9对葡萄果实发育成熟具有重要作用。28053 毕业论文关键词:SPL9转录因子;葡萄果实;实时荧光定量PCR;瞬时转基因
The molecular mechanism of transcription factors SPL9 in regulation of grape fruit ripening
Abstract: In order to elucidate the putative funetion of the SPL9 transcription factor during the grape fruit development. Taking "Fujiminori” grape as material, combining methods like qRT-PCR technology, tomato transient transgene to demonstrate the molecular mechanism of transcription factor SPL (SQUAMOSA promoter binding protein like) gene SPL9 in regulation and control of the maturation of grape fruit. Clone the cDNA full-length sequence of SPL9 gene from "Fujiminori" grape fruit by using the method of PCR, and analyze the expression amount of SPL9 in different growing period of grape through qRT-PCR, and achieve the construction of plant binary expression vector of SPL9 and the transient expression of tomato gene. The result shows that in grape fruit’s different growing period, the expression amount of SPL9 increases constantly with the growth of the fruit. By the technology of tomato transient expression, it shows that SPL9 takes part in the growth and development of the fruit, and it infers that SPL9 plays an important role in regulation and control of the growth and development of the grape fruit. These results suggested that SPL9 is required for grape fruit development.
Key words: SPL9 transcription factor; grape fruit; real time fluorescence ration PCR; transient transgene
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