山东农业科学2024，Vol.56Issue(5)：19-26,8.DOI:10.14083/j.issn.1001-4942.2024.05.003
广藿香PcGA2ox1基因克隆、VIGS载体构建和表达分析
Cloning,VIGS Vector construction and Expression Analysis of PcGA2ox1 Gene in Pogostemon cablin(Blanco)Benth
摘要
Abstract
Gibberellin 2-oxidases(GA2ox)is a key enzyme in metabolic pathway of gibberellins(GAs),which regulates the degradation of active GAs and plays important roles in plant type regulation.In order to explore the function of GA2ox gene in Pogostemon cablin,we cloned PcGA2ox1 gene of P.cablin and obtained 561 bp of CDS sequence.The results of bioinformatics analysis showed that PcGA2ox1 protein enco-ded 186 amino acids,was a hydrophilic protein with the molecular weight as 20.98 kDa and the isoelectric point as 5.81,contained neither signal peptide nor transmembrane domain,had the conserved domain of GA2ox supergene family,and was mainly located in nucleus.Phylogenetic analysis showed that PcGA2ox1 was most closely related to Salvia miltiorrhiza GA2ox7.The qRT-PCR results showed that PcGA2ox1 gene had tis-sue-specific expression in P.cablin with the highest level in leaves and the lowest level in roots.Infestation of P.cablin by virus-induced gene silencing(VIGS)technology showed that PcGA2ox1 gene expression decreased by 83%compared with negative control and 71%compared with blank control two weeks later,and the silen-cing effect was obvious.The results of this study could lay a foundation for an in-depth understanding of the structure,function and mechanism of PcGA2ox1,and provide a reference for the selection and breeding of ex-cellent P.cablin varieties.关键词
广藿香/赤霉素2-氧化酶(GA2ox)/基因克隆/病毒诱导基因沉默(VIGS)/表达分析Key words
Pogostemon cablin/Gibberellin 2-oxidases(GA2ox)/Gene cloning/Virus-induced gene si-lencing(VIGS)/Expression analysis分类
农业科技引用本文复制引用
严雅玲,曾晴,严寒静,何梦玲,张宏意..广藿香PcGA2ox1基因克隆、VIGS载体构建和表达分析[J].山东农业科学,2024,56(5):19-26,8.基金项目
广东省中医药局科研项目(20241177) （20241177）
广东省重点领域研发计划项目(2020B020221002) （2020B020221002）
广东省普通高校重点领域专项(2023ZDZX4025) （2023ZDZX4025）
广州市科技计划项目(SL2023B03J00748) （SL2023B03J00748）
