福建林业科技2026，Vol.53Issue(2)：9-22,14.DOI:10.13428/j.cnki.fjlk.2026.02.002
闽楠BBR-BPC基因家族的全基因组鉴定
Genome-Wide Identification of the BBR-BPC Gene Family in Phoebe bournei
摘要
Abstract
BBR-BPC is a family of transcription factors unique to plants that contain the BPC structure domain and play a crucial regulatory role in controlling plant growth and development,as well as responses to stress.Phoebe bournei is a second-class rare and endangered tree species in China,and its BBR-BPC family has not been the subject of systematic research.This study,based on the whole-genome data of Phoebe bournei,systematically identified this family and analyzed its evolutionary characteristics,promoter ele-ments,and tissue expression patterns.A total of 8 BBR-BPC genes were identified,and phylogenetic analysis divided them into 3 subfamilies distributed across 6 chromosomes.All members contain highly conserved five-cysteine structures and core motifs Motif1,2,4,and no tandem repeat events were detected.Interspecific collinearity analysis showed that this family exhibits a significantly higher degree of collinearity with dicotyledonous plants compared to monocotyledonous plants,suggesting its evolutionary conserva-tism.Promoter analysis revealed that photoresponse elements account for the highest proportion(23.8%)and are widely present a-mong all members.Tissue expression analysis showed that PbBBR-BPC7 exhibits high specificity in root bark and stem bark,with its promoter region enriched with ABA response elements.These findings indicate that the Phoebe bournei BBR-BPC family exhibits ev-olutionary conservatism and that members may have potential functional specializations.The study provides a reference for elucidating the biological functions of this family and for molecular breeding of valuable tree species.关键词
闽楠/BBR-BPC基因家族/全基因组鉴定/表达分析/顺式作用元件Key words
Phoebe bournei/BBR-BPC gene family/whole-genome identification/expression analysis/cis-acting element分类
农业科技引用本文复制引用
董宛玉,廖嘉雯,陈典,张娟,林文静,吴华,郑珂晖..闽楠BBR-BPC基因家族的全基因组鉴定[J].福建林业科技,2026,53(2):9-22,14.基金项目
国家重点研发计划课题子课题(2024YFD2200302-06) （2024YFD2200302-06）
福建省林木种苗科技攻关项目子课题(ZMGG-0809-1) （ZMGG-0809-1）
