文献类型：期刊文献

英文题名：Characterizations of a Class-I BASIC PENTACYSTEINE Gene Reveal Conserved Roles in the Transcriptional Repression of Genes Involved in Seed Development

作者：Ma, Xianjin[1,2,3] Yu, Yifan[1,2,3] Hu, Zhikang[1,2,3] Huang, Hu[1,2,3] Li, Sijia[1,2,3] Yin, Hengfu[1,3]

第一作者：Ma, Xianjin

通信作者：Yin, HF[1];Yin, HF[2]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, State Key Lab Tree Genet & Breeding, Hangzhou 311400, Peoples R China;[2]Nanjing Forestry Univ, Coll Informat Sci & Technol, Nanjing 210037, Peoples R China;[3]Chinese Acad Forestry, Res Inst Subtrop Forestry, Key Lab Forest Genet & Breeding, Hangzhou 311400, Peoples R China

年份：2022

卷号：44

期号：9

起止页码：4059-4069

外文期刊名：CURRENT ISSUES IN MOLECULAR BIOLOGY

收录：;Scopus(收录号：2-s2.0-85138312820);WOS:【SCI-EXPANDED(收录号:WOS:000857470800001)】；

基金：This research is supported by Nonprofit Research Projects (CAFYBB2021QD001-1) of Chinese Academy of Forestry and National Science Foundation of China (31870578).

语种：英文

外文关键词：BPC transcription factor; flower development; histone methylation; ovule; seed

摘要：The developmental regulation of flower organs involves the spatio-temporal regulation of floral homeotic genes. BASIC PENTACYSTEINE genes are plant-specific transcription factors that is involved in many aspects of plant development through gene transcriptional regulation. Although studies have shown that the BPC genes are involved in the developmental regulation of flower organs, little is known about their role in the formation of double-flower due. Here we characterized a Class I BPC gene (CjBPC1) from an ornamental flower-Camellia japonica. We showed that CjBPC1 is highly expressed in the central whorls of flowers in both single and doubled varieties. Overexpression of CjBPC1 in Arabidopsis thaliana caused severe defects in siliques and seeds. We found that genes involved in ovule and seed development, including SEEDSTICK, LEAFY COTYLEDON2, ABSCISIC ACID INSENSITIVE 3 and FUSCA3, were significantly down-regulated in transgenic lines. We showed that the histone 3 lysine 27 methylation levels of these downstream genes were enhanced in the transgenic plants, indicating conserved roles of CjBPC1 in recruiting the Polycomb Repression Complex for gene suppression.