Soybean is a paleopolyploid that has undergone two whole genome duplication events. Gene duplication is a type of genomic change that can lead to novel functions of pre-existing genes. Chalcone synthase (CHS) is the plantspecific type III polyketide synthase that catalyzes the first committed step in (iso)flavonoid biosynthesis in plants. | Nội dung Text Genome-wide identification and localization of chalcone synthase family in soybean Glycine max L Merr .den color inherit .ttnd ol .ttnd ul .ttnd dl padding 0 0px 0 20px .ttnd hr margin 10px 0px .ttnd a href javascript void 0 .ttnd a href color inherit dtextscript p text-align left dtextscript img vertical-align middle Anguraj Vadivel et al. BMC Plant Biology 2018 18 325 lt br gt https s12870-018-1569-x lt br gt lt br gt lt br gt lt br gt lt br gt RESEARCH ARTICLE Open Access lt br gt lt br gt Genome-wide identification and lt br gt localization of chalcone synthase family in lt br gt soybean Glycine max L Merr lt br gt Arun Kumaran Anguraj Vadivel1 2 Kevin Krysiak1 Gang Tian1 and Sangeeta Dhaubhadel1 2 lt br gt lt br gt lt br gt Abstract lt br gt Background Soybean is a paleopolyploid that has undergone two whole genome duplication events. Gene duplication lt br gt is a type of genomic change that can lead to novel functions of pre-existing genes. Chalcone synthase CHS is the plant- lt br gt specific type III polyketide synthase that catalyzes the first committed step in iso flavonoid biosynthesis in plants. lt br gt Results Here we performed a genome-wide search of CHS genes in soybean and identified 21 GmCHS loci containing lt br gt 14 unique GmCHS GmCHS1-GmCHS14 that included 5 newly identified GmCHSs GmCHS10-GmCHS14 . Furthermore 3 lt br gt copies of GmCHS3 and 2 copies of GmCHS4 were found in soybean. Analysis of gene structure of GmCHSs revealed the lt br gt presence of a single intron in protein-coding regions except for GmCHS12 that contained 3 introns. Even though GmCHS lt br gt genes are located on 8 different chromosomes a large number of these genes are present on chromosome 8 where lt br gt they form 3 distinct clusters. Expression analysis of GmCHS genes revealed tissue-specific expression pattern and that lt br gt some GmCHS isoforms localize in the cytoplasm and the nucleus while other isoforms are restricted to .
