Houttuynia cordata,also known as Yuxingcao in Chinese,is a perennial herb in the Saururaceae family.It is highly regarded for its medicinal properties,particularly in treating respiratory infections and inflammatory c...Houttuynia cordata,also known as Yuxingcao in Chinese,is a perennial herb in the Saururaceae family.It is highly regarded for its medicinal properties,particularly in treating respiratory infections and inflammatory conditions,as well as boosting the human immune system.However,a lack of genomic information has hindered research on the functional genomics and potential improvements of H.cordata.In this study,we present a near-complete assembly of H.cordata genome and investigate the biosynthetic pathway of flavonoids,specifically quercetin,using genomics,transcriptomics,and metabolomics analyses.The genome of H.cordata diverged from that of Saururus chinensis around 33.4 million years ago;it consists of 2.24 Gb with 76 chromosomes(4n=76)and has undergone three whole-genome duplication(WGD)events.These WGDs played a crucial role in shaping the H.cordata genome and influencing the gene families associated with its medicinal properties.Through metabolomics and transcriptomics analyses,we identified key genes involved in the b-oxidation process for biosynthesis of houttuynin,one of the volatile oils responsible for the plant’s fishy smell.In addition,using the reference genome,we identified genes involved in flavonoid biosynthesis,particularly quercetin metabolism,in H.cordata.This discovery has important implications for understanding the regulatory mechanisms that underlie production of active pharmaceutical ingredients in traditional Chinese medicine.Overall,the high-quality genome assembly of H.cordata serves as a valuable resource for future functional genomics research and provides a solid foundation for genetic improvement of H.cordata for the benefit of human health.展开更多
基金funded by the National Natural Science Foundation of China,China(grant number 32360074)the Guizhou Provincial Natural Science Foundation of Department of Education,China([2022]077)+1 种基金The Karst Mountain Ecological Security Engineering Research Center,China(KY[2021]007)the Joint Fund of the National Natural Science Foundation of China and the Karst Science Research Center of Guizhou Province,China(U1812401).
文摘Houttuynia cordata,also known as Yuxingcao in Chinese,is a perennial herb in the Saururaceae family.It is highly regarded for its medicinal properties,particularly in treating respiratory infections and inflammatory conditions,as well as boosting the human immune system.However,a lack of genomic information has hindered research on the functional genomics and potential improvements of H.cordata.In this study,we present a near-complete assembly of H.cordata genome and investigate the biosynthetic pathway of flavonoids,specifically quercetin,using genomics,transcriptomics,and metabolomics analyses.The genome of H.cordata diverged from that of Saururus chinensis around 33.4 million years ago;it consists of 2.24 Gb with 76 chromosomes(4n=76)and has undergone three whole-genome duplication(WGD)events.These WGDs played a crucial role in shaping the H.cordata genome and influencing the gene families associated with its medicinal properties.Through metabolomics and transcriptomics analyses,we identified key genes involved in the b-oxidation process for biosynthesis of houttuynin,one of the volatile oils responsible for the plant’s fishy smell.In addition,using the reference genome,we identified genes involved in flavonoid biosynthesis,particularly quercetin metabolism,in H.cordata.This discovery has important implications for understanding the regulatory mechanisms that underlie production of active pharmaceutical ingredients in traditional Chinese medicine.Overall,the high-quality genome assembly of H.cordata serves as a valuable resource for future functional genomics research and provides a solid foundation for genetic improvement of H.cordata for the benefit of human health.
