| Title | Ethylene promotes root hair growth through coordinated EIN3/EIL1 and RHD6/RSL1 activity in Arabidopsis |
| Authors | Feng, Ying Xu, Ping Li, Bosheng Li, Pengpeng Wen, Xing An, Fengying Gong, Yan Xin, Yi Zhu, Ziqiang Wang, Yichuan Guo, Hongwei |
| Affiliation | Southern Univ Sci & Technol, Dept Biol, Inst Plant & Food Sci, Shenzhen 518055, Guangdong, Peoples R China. Peking Univ, Coll Life Sci, State Key Lab Prot & Plant Gene Res, Beijing 100871, Peoples R China. Nanjing Normal Univ, Coll Life Sci, Nanjing 210023, Jiangsu, Peoples R China. Peking Tsinghua Ctr Life Sci, Beijing 100871, Peoples R China. Southern Univ Sci & Technol, Dept Biol, Inst Plant & Food Sci, Shenzhen 518055, Guangdong, Peoples R China. Guo, HW (reprint author), Peking Tsinghua Ctr Life Sci, Beijing 100871, Peoples R China. |
| Keywords | ethylene root hair EIN3 RHD6 RSL4 TRANSCRIPTION FACTOR AUXIN BIOSYNTHESIS SIGNAL-TRANSDUCTION GENE-EXPRESSION CELL-GROWTH ELONGATION THALIANA EPIDERMIS SEEDLINGS EIN2 |
| Issue Date | 2017 |
| Publisher | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
| Citation | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA. 2017, 114(52), 13834-13839. |
| Abstract | Root hairs are an extensive structure of root epidermal cells and are critical for nutrient acquisition, soil anchorage, and environmental interactions in sessile plants. The phytohormone ethylene (ET) promotes root hair growth and also mediates the effects of different signals that stimulate hair cell development. However, the molecular basis of ET-induced root hair growth remains poorly understood. Here, we show that ET-activated transcription factor ETHYLENE-INSENSITIVE 3 (EIN3) physically interacts with ROOT HAIR DEFECTIVE 6 (RHD6), a well-documented positive regulator of hair cells, and that the two factors directly coactivate the hair length-determining gene RHD6-LIKE 4 (RSL4) to promote root hair elongation. Transcriptome analysis further revealed the parallel roles of the regulator pairs EIN3/EIL1 (EIN3-LIKE 1) and RHD6/RSL1 (RHD6-LIKE 1). EIN3/EIL1 and RHD6/RSL1 coordinately enhance root hair initiation by selectively regulating a subset of core root hair genes. Thus, our work reveals a key transcriptional complex consisting of EIN3/EIL1 and RHD6/RSL1 in the control of root hair initiation and elongation, and provides a molecular framework for the integration of environmental signals and intrinsic regulators in modulating plant organ development. |
| URI | http://hdl.handle.net/20.500.11897/500310 |
| ISSN | 0027-8424 |
| DOI | 10.1073/pnas.1711723115 |
| Indexed | SCI(E) PubMed |
| Appears in Collections: | 生命科学学院 |
