| GRAS transcription factor PINNATE-LIKE PENTAFOLIATA2 controls compound leaf morphogenesis in Medicago truncatula | |
He, Liangliang1; Liu, Ye2; Mao, Yawen1; Wu, Xinyuan1; Zheng, Xiaoling; Zhao, Weiyue; Mo, Xiaoyu1; Wang, Ruoruo1; Wu, Qinq1; Wang, Dongfa2; Li, Youhan; Yang, Yuanfan3,4; Bai, Quanzi; Zhang, Xiaojia; Zhou, Shaoli; Zhao, Baolin1; Liu, Changning1 ; Liu, Yu; Tadege, Million5; Chen, Jianghua1,2,3,4
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| 2024 | |
| Source Publication | PLANT CELL
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| ISSN | 1040-4651 |
| Pages | - |
| Abstract | The milestone of compound leaf development is the generation of separate leaflet primordia during the early stages, which involves two linked but distinct morphogenetic events: leaflet initiation and boundary establishment for leaflet separation. Although some progress in understanding the regulatory pathways for each event have been made, it is unclear how they are intrinsically coordinated. Here, we identify the PINNATE-LIKE PENTAFOLIATA2 (PINNA2) gene encoding a newly identified GRAS transcription factor in Medicago truncatula. PINNA2 transcripts are preferentially detected at organ boundaries. Its loss-of-function mutations convert trifoliate leaves into a pinnate pentafoliate pattern. PINNA2 directly binds to the promoter region of the LEAFY orthologue SINGLE LEAFLET1 (SGL1), which encodes a key positive regulator of leaflet initiation, and downregulates its expression. Further analysis revealed that PINNA2 synergizes with two other repressors of SGL1 expression, the BEL1-like homeodomain protein PINNA1 and the C2H2 zinc finger protein PALMATE-LIKE PENTAFOLIATA1 (PALM1), to precisely define the spatiotemporal expression of SGL1 in compound leaf primordia, thereby maintaining a proper pattern of leaflet initiation. Moreover, we showed that the enriched expression of PINNA2 at the leaflet-to-leaflet boundaries is positively regulated by the boundary-specific gene MtNAM, which is essential for leaflet boundary formation. Together, these results unveil a pivotal role of the boundary-expressed transcription factor PINNA2 in regulating leaflet initiation, providing molecular insights into the coordination of intricate developmental processes underlying compound leaf pattern formation. PINNATE-LIKE PENTAFOLIATA2, a boundary-expressed transcription factor, controls compound leaf morphogenesis by directly repressing the activity of a leaflet initiation regulator in Medicago truncatula. |
| Subject Area | Biochemistry & Molecular Biology ; Plant Sciences ; Cell Biology |
| DOI | 10.1093/plcell/koae033 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:001174674900001 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://ir.xtbg.ac.cn/handle/353005/13985 |
| Collection | 2012年后新成立研究组 |
| Affiliation | 1.Chinese Acad Sci, CAS Key Lab Top Plant Resources & Sustainable Use, State Key Lab Plant Divers & Specialty Crops, Xishuangbanna Trop Bot Garden, Kunming 650223, Yunnan, Peoples R China 2.Univ Chinese Acad Sci, Coll Life Sci, Beijing 100049, Peoples R China 3.Univ Sci & Technol China, Sch Life Sci, Div Life Sci & Med, Hefei 230027, Peoples R China 4.Yunnan Univ, Yunnan Key Lab Plant Reprod Adaptat & Evolutionary, Kunming 650500, Peoples R China 5.Yunnan Univ, Sch Ecol & Environm Sci, Inst Biodivers, Ctr Invas Biol, Kunming 650500, Peoples R China 6.Oklahoma State Univ, Inst Agr Biosci, Dept Plant & Soil Sci, Ardmore, OK 73401 USA |
| Recommended Citation GB/T 7714 | He, Liangliang,Liu, Ye,Mao, Yawen,et al. GRAS transcription factor PINNATE-LIKE PENTAFOLIATA2 controls compound leaf morphogenesis in Medicago truncatula[J]. PLANT CELL,2024:-. |
| APA | He, Liangliang.,Liu, Ye.,Mao, Yawen.,Wu, Xinyuan.,Zheng, Xiaoling.,...&Chen, Jianghua.(2024).GRAS transcription factor PINNATE-LIKE PENTAFOLIATA2 controls compound leaf morphogenesis in Medicago truncatula.PLANT CELL,-. |
| MLA | He, Liangliang,et al."GRAS transcription factor PINNATE-LIKE PENTAFOLIATA2 controls compound leaf morphogenesis in Medicago truncatula".PLANT CELL (2024):-. |
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