Flavonoid metabolism in Camptotheca acuminate remained an untapped area for years.A tandem MS approach was used and focused on the mining and characterizing of flavonoids in mature C.acuminate.Fifteen new flavonoids a...Flavonoid metabolism in Camptotheca acuminate remained an untapped area for years.A tandem MS approach was used and focused on the mining and characterizing of flavonoids in mature C.acuminate.Fifteen new flavonoids and forty-three known flavonoids,including fifteen flavone analogs,sixteen flavonol analogs,seven flavanone analogs,six chalcone analogs,four xanthone analogs,ten flavane analogs were mined and identified based on their MS/MS fragments.Fifty-three of them were firstly characterized in C.acuminate.Eight biosynthetic precursors for these flavonoids were also identified.We constructed a specific metabolic map for flavonoids according to their relative contents in the flowers,fruits,stems,and leaves of C.acuminate.Furthermore,the most probable genes involved in chalcone biosynthesis,flavonoid hydroxylation,methylation,and glycosylation were further mined and fished in the gene reservoir of C.acuminate according to their conserved domains and co-expression analysis.These findings enable us to acquire a better understanding of versatile flavonoid metabolism in C.acuminate.展开更多
基金The authors wish to acknowledge the financial support provided by the Department of Science and Technology of Sichuan Province,PR China(Project No.2021ZYD0059)the National Natural Science Foundation of China(Project No.21708028)the National College Students Innovation and Entrepreneurship Training Program,PR China(Project No.201910626009).
文摘Flavonoid metabolism in Camptotheca acuminate remained an untapped area for years.A tandem MS approach was used and focused on the mining and characterizing of flavonoids in mature C.acuminate.Fifteen new flavonoids and forty-three known flavonoids,including fifteen flavone analogs,sixteen flavonol analogs,seven flavanone analogs,six chalcone analogs,four xanthone analogs,ten flavane analogs were mined and identified based on their MS/MS fragments.Fifty-three of them were firstly characterized in C.acuminate.Eight biosynthetic precursors for these flavonoids were also identified.We constructed a specific metabolic map for flavonoids according to their relative contents in the flowers,fruits,stems,and leaves of C.acuminate.Furthermore,the most probable genes involved in chalcone biosynthesis,flavonoid hydroxylation,methylation,and glycosylation were further mined and fished in the gene reservoir of C.acuminate according to their conserved domains and co-expression analysis.These findings enable us to acquire a better understanding of versatile flavonoid metabolism in C.acuminate.
