首页 > 植物学报（英文版） > PagGRF12a interacts with PagGIF1b to regulate secondary xylem development through modulating PagXND1a expression in Populus alba × P. glandulosa

PagGRF12a interacts with PagGIF1b to regulate secondary xylem development through modulating PagXND1a expression in Populus alba × P. glandulosa

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摘要Growth-regulating factors (GRFs) are important reg-ulators of plant development and growth, but their possible roles in xylem development in woody plants remain unclear. Here, we report that Populus alba × Papulus glandulosa PagGRF12a negatively regulates xylem development in poplar. PagGRF12a is ex-pressed in vascular tissues. Compared to non-transgenic control plants, transgenic poplar plants overexpressing PagGRF12a exhibited reduced xylem width and plants with repressed expression of PagGRF12a exhibited increased xylem width. Xylem NAC domain 1 (XND1) encodes a NAC do-main transcription factor that regulates xylem de-velopment and transcriptional analyses revealed that PagXND1a is highly upregulated in PagGRF12a-overexpressing plants and downregulated in PagGRF12a-suppressed plants, indicating that PagGRF12a may regulate xylem development through PagXND1a. Transient transcriptional assays and chromatin immunoprecipitation-polymerase chain reaction assays confirmed that PagGRF12a directly upregulates PagXND1a. In addition, PagGRF12a interacts with the GRF-Interacting Factor (GIF) PagGIF1b, and this interaction en-hances the effects of PagGRF12a on PagXND1a. Our results indicate that PagGRF12a inhibits xylem development by upregulating the expression of PagXND1a.

作者 Jinnan Wang ^[1] Houjun Zhou ^[2] Yanqiu Zhao ^[3] Cheng Jiang ^[3] Jihong Li ^[4] Fang Tang ^[5] Yingli Liu ^[6] Shutang Zhao ^[5] Jianjun Hu ^[5] Xueqin Song ^[5] Meng-Zhu Lu ^[7] 学术成果认领

作者单位 State Key Laboratory of Tree Genetics and Breeding,Key Laboratory of Tree Breeding and Cultivation of the State Forestry Administration,Research Institute of Forestry,Chinese Academy of Forestry,Beijing 100091,China;Key Laboratory of Agricultural Ecology and Environment,College of Forestry,Shandong Agricultural University,Tai'an 271018,China ^[1] State Key Laboratory of Tree Genetics and Breeding,Key Laboratory of Tree Breeding and Cultivation of the State Forestry Administration,Research Institute of Forestry,Chinese Academy of Forestry,Beijing 100091,China;School of Agriculture,Ludong University,Yantai 264025,China ^[2] State Key Laboratory of Tree Genetics and Breeding,Key Laboratory of Tree Breeding and Cultivation of the State Forestry Administration,Research Institute of Forestry,Chinese Academy of Forestry,Beijing 100091,China;State Key Laboratory of Subtropical Silviculture,School of Forestry and Biotechnology,Zhejiang Agriculture&Forestry University,Hangzhou 311300,China ^[3] Key Laboratory of Agricultural Ecology and Environment,College of Forestry,Shandong Agricultural University,Tai'an 271018,China ^[4] State Key Laboratory of Tree Genetics and Breeding,Key Laboratory of Tree Breeding and Cultivation of the State Forestry Administration,Research Institute of Forestry,Chinese Academy of Forestry,Beijing 100091,China;Co-Innovation Center for Sustainable Forestry in Southern China,Nanjing Forestry University,Nanjing 210037,China ^[5] State Key Laboratory of Tree Genetics and Breeding,Key Laboratory of Tree Breeding and Cultivation of the State Forestry Administration,Research Institute of Forestry,Chinese Academy of Forestry,Beijing 100091,China ^[6] State Key Laboratory of Tree Genetics and Breeding,Key Laboratory of Tree Breeding and Cultivation of the State Forestry Administration,Research Institute of Forestry,Chinese Academy of Forestry,Beijing 100091,China;State Key Laboratory of Subtropical Silviculture,School of Forestry and Biotechnology,Zhejiang Agriculture&Forestry University,Hangzhou 311300,China;Co-Innovation Center for Sustainable Forestry in Southern China,Nanjing Forestry University,Nanjing 210037,China ^[7]

关键词 GRF GIF1 Populus wood formation XND1 xylem development

栏目名称

Cell and Developmental Biology

发布时间 2021-10-13（万方平台首次上网日期，不代表论文的发表时间）

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