芥蓝AOP基因家族生物信息学分析  

Bioinformatics analysis of the AOP gene family in Chinese kale

作　　者：赵怡娇 唐为玲 李尊文 赖钟雄[1] 郭容芳[1,2] ZHAO Yijiao;TANG Weiling;LI Zunwen;LAI Zhongxiong;GUO Rongfang(Institute of Horticultural Biotechnology,Fujian Agriculture and Forestry University,Fuzhou 350002,China;Joint FAFU-Dalhousie Lab,Fujian Agriculture and Forestry University,Fuzhou 350002,China)

机构地区：[1]福建农林大学园艺植物生物工程研究所,福州350002 [2]福建农林大学戴尔豪西大学联合实验室,福州350002

出　　处：《应用与环境生物学报》2021年第6期1653-1661,共9页Chinese Journal of Applied and Environmental Biology

基　　金：国家自然科学基金项目(31401859,31772310);博士后启动经费项目(132300155);博士后第10批特别资助项目(2017T100464);福建农林大学科技创新基金会项目(CXZX2018076)资助。

摘　　要：芥子油苷(GS)是一类植物次生代谢产物,其多样性是由特定氨基酸前体延伸和侧链修饰所致.在侧链修饰过程中,AOP2和AOP3被证明可催化甲基亚磺酰基烷基GS分别形成烯基和羟烷基GS.为了解芥蓝(Brassica alboglabra)AOP基因家族成员编码2-氧化戊二酸双加氧酶的生物学功能,利用鉴定的家族成员进行蛋白质理化性质、蛋白质保守结构、基因结构、染色体定位、共线性关系、系统进化树、启动子顺式作用元件以及编码蛋白互作预测的生物信息学分析.结果显示芥蓝中有17个AOP基因家族成员,蛋白质分子量为34 106.15-51 346.77,属酸性非分泌蛋白质,分布在6条染色体上;系统进化树分析结果显示AOP基因家族可分为两大类;成员均包含DIOX_N和FE2OG_OXY结构域,Motif相对保守;成员启动子可能有多个转录起始位点,包含非生物胁迫应激响应元件及MYB结合位点,推测MYB可能通过调控AOP进而调控芥蓝GS代谢;AOP基因家族编码蛋白间不互作,与MYB、NDUF等蛋白互作;AOP家族成员间有3对共线性关系,与拟南芥基因组和芜菁基因组之间分别存在9对、20对共线性关系.本研究表明芥蓝17个AOP基因家族成员在功能上存在差异,且该家族成员参与光、多种激素信号和MYB转录因子复杂的调控网络,结果可为今后人工调控芥蓝GS组分和含量提供理论依据.Glucosinolates(GS) are a class of plant secondary metabolites whose diversity is driven by the elongation of specific amino acid precursors and side chain modifications. In the process of side chain modification, the AOP2 and AOP3 genes have been shown to catalyze the formation of alkenyl and hydroxyalkyl GS from methylsulfinyl alkyl GS, respectively. In this study, we aimed to use bioinformatics analysis to identify members of the AOP gene family in Chinese kale(Brassica alboglabra) and to understand the biological functions of 2-oxoglutarate dioxygenase encoded by members of the AOP gene family in Chinese kale.Bioinformatics analysis of protein physicochemical properties, protein conservative structure, gene structure,chromosomal localization, collinear relationships, phylogenetic trees, cis-acting promoter elements, and protein coding interactions were performed using the identified AOP gene family members. The results revealed 17 AOP genes in Chinese kale. The proteins, which were acidic, non-secreted proteins, were distributed on six chromosomes and had molecular weights ranging from 34 106.15 to 51 346.77. The phylogenetic tree analysis revealed that the genes could be divided into two subcategories, and all members contained the DIOX_N and FE2 OG_OXY domains, with relatively conservative motifs. We suggest that the gene member promoter sequences may contain multiple transcription start sites, including abiotic stress response elements and MYB binding sites, and we hypothesize that MYB may change GS metabolism by regulating AOP. No interaction effects among AOP gene family encoding proteins were found;however, interaction effects between them and other proteins were found, namely MYB, NDUF, etc. Three pairs of collinearity were found among the AOP gene family members, while nine and 20 pairs of collinearity were found with the Arabidopsis and turnip genome,respectively. Ultimately, we show that functional differences are found among the 17 AOP gene family members in Chinese kale. In addition, the members of

关 键 词：芥蓝 AOP基因家族 成员鉴定 功能分析 

分 类 号：S635.9[农业科学—蔬菜学]