Nature CommunicationsFlavonoid-mediated bacterial spermidine biosynthesis enhances vitamin accumulation in tomato fruitsWenjiang FuChenyu SunBin SunPengfei LiXinhua DingQiao GuoJun YuanHangxian Lai2026-01-12Full textDOI https://doi.org/10.1038/s41467-025-68244-9