文献类型：期刊文献

英文题名：AUXIN RESPONSE FACTOR 18-HISTONE DEACETYLASE 6 module regulates floral organ identity in rose (Rosa hybrida)

作者：Chen, Jiwei[1] Li, Yang[1] Li, Yonghong[2] Li, Yuqi[1] Wang, Yi[1] Jiang, Chuyan[1] Choisy, Patrick[3] Xu, Tao[3] Cai, Youming[4] Pei, Dong[5] Jiang, Cai-Zhong[6,7] Gan, Su-Sheng[8] Gao, Junping[1] Ma, Nan[1]

第一作者：Chen, Jiwei

通信作者：Ma, N[1]

机构：[1]China Agr Univ, Dept Ornamental Hort, Coll Hort,State Key Lab Agrobiotechnol, Beijing Key Lab Dev & Qual Control Ornamental Cro, Beijing 100193, Peoples R China;[2]Shenzhen Polytech, Sch Appl Chem & Biotechnol, Shenzhen 518055, Guangdong, Peoples R China;[3]LVMH Rech, F-45800 St Jean De Braye, France;[4]Shanghai Acad Agr Sci, Shanghai 201403, Peoples R China;[5]Chinese Acad Forestry, Res Inst Forestry, State Key Lab Tree Genet & Breeding, Beijing 100091, Peoples R China;[6]Univ Calif Davis, Crop Pathol & Genet Res Unit, USDA, ARS, Davis, CA 95616 USA;[7]Univ Calif Davis, Dept Plant Sci, Davis, CA 95616 USA;[8]Cornell Univ, Coll Agr & Life Sci, Sch Integrat Plant Sci, Plant Biol Sect, Ithaca, NY 14853 USA

年份：2021

卷号：186

期号：2

起止页码：1074-1087

外文期刊名：PLANT PHYSIOLOGY

收录：;Scopus(收录号：2-s2.0-85108709472);WOS:【SCI-EXPANDED(收录号:WOS:000671555900028)】；

基金：This work was supported by National Key Research and Development Program (grant 2018YFD1000400, Ministry of Science and Technology of the People's Republic of China), the National Natural Science Foundation of China (grant numbers 31730079 and 31872148), the Construction of Beijing Science and Technology Innovation and Service Capacity in Top Subjects (CEFF-PXM2019_014207_000032, Beijing Municipal Education Commission), and 111 Project (B17043, Ministry of Education of the People's Republic of China).

语种：英文

摘要：The phytohormone auxin plays a pivotal role in floral meristem initiation and gynoecium development, but whether and how auxin controls floral organ identity remain largely unknown. Here, we found that auxin levels influence organ specification, and changes in auxin levels influence homeotic transformation between petals and stamens in rose (Rosa hybrida). The PIN-FORMED-LIKES (PILS) gene RhPILS1 governs auxin levels in floral buds during floral organogenesis. RhAUXIN RESPONSE FACTOR 18 (RhARF18), whose expression decreases with increasing auxin content, encodes a transcriptional repressor of the C-class gene RhAGAMOUS (RhAG), and controls stamen-petal organ specification in an auxin-dependent manner. Moreover, RhARF18 physically interacts with the histone deacetylase (HDA) RhHDA6. Silencing of RhHDA6 increases H3K9/K14 acetylation levels at the site adjacent to the RhARF18-binding site in the RhAG promoter and reduces petal number, indicating that RhARF18 might recruit RhHDA6 to the RhAG promoter to reinforce the repression of RhAG transcription. We propose a model for how auxin homeostasis controls floral organ identity via regulating transcription of RhAG