論文 - 詳細
| RRC ID | 83453 |
|---|---|
| 著者 | Mazumdar S, Augstein F, Zhang A, Musseau C, Anjam MS, Marhavy P, Melnyk CW. |
| タイトル | Damage activates EXG1 and RLP44 to suppress vascular differentiation during regeneration in Arabidopsis. |
| ジャーナル | Plant Commun |
| Abstract |
Plants possess remarkable regenerative abilities to form de novo vasculature after damage and in response to pathogens that invade and withdraw nutrients. To identify common factors that affect vascular formation upon stress, we searched for Arabidopsis thaliana genes differentially expressed upon Agrobacterium infection, nematode infection, and plant grafting. One such gene is cell wall-related and highly induced by all three stresses, which we named ENHANCED XYLEM AND GRAFTING1 (EXG1), since its mutations promote ectopic xylem formation in a vascular cell induction system and enhance graft formation. Further observations revealed that exg1 mutants show inhibited cambium development and callus formation but enhanced tissue attachment, syncytium size, phloem reconnection, and xylem formation. Given that brassinosteroids also promote xylem differentiation, we analyzed brassinosteroid-related genes and found that mutations in RLP44 encoding a receptor-like protein cause similar regeneration-related phenotypes as mutations in EXG1. Like EXG1, RLP44 expression is also induced by grafting and wounding. Mutations in EXG1 and RLP44 affect the expression of many genes in common, including those related to cell walls and genes important for vascular regeneration. Our results suggest that EXG1 integrates information from wounding or pathogen stress and functions with RLP44 to suppress vascular differentiation during regeneration and healing. |
| ページ | 101256 |
| 公開日 | 2025-1-16 |
| DOI | 10.1016/j.xplc.2025.101256 |
| PII | S2590-3462(25)00018-5 |
| PMID | 39818623 |
| PMC | PMC12010363 |
| MeSH | Arabidopsis* / genetics Arabidopsis* / physiology Arabidopsis Proteins* / genetics Arabidopsis Proteins* / metabolism Cell Differentiation / genetics Gene Expression Regulation, Plant Mutation Regeneration* / genetics Xylem / genetics Xylem / physiology |
| オルトメトリクス指標 |
オルトメトリクス指標項目
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| 最多言及媒体 | Bluesky |
| 各媒体での言及数の合計 | 8 |
| 過去6か月間でのオルトメトリクス指標の変動値 | 0.0 |
| リソース情報 | |
| シロイヌナズナ / 植物培養細胞・遺伝子 | psx05661 psx06684 |