Article ; Online: A newly evolved rice-specific gene JAUP1 regulates jasmonate biosynthesis and signalling to promote root development and multi-stress tolerance.
2024 Volume 22, Issue 5, Page(s) 1417–1432
Abstract: Root architecture and function are critical for plants to secure water and nutrient supply from the soil, but environmental stresses alter root development. The phytohormone jasmonic acid (JA) regulates plant growth and responses to wounding and other ... ...
| Abstract | Root architecture and function are critical for plants to secure water and nutrient supply from the soil, but environmental stresses alter root development. The phytohormone jasmonic acid (JA) regulates plant growth and responses to wounding and other stresses, but its role in root development for adaptation to environmental challenges had not been well investigated. We discovered a novel JA Upregulated Protein 1 gene (JAUP1) that has recently evolved in rice and is specific to modern rice accessions. JAUP1 regulates a self-perpetuating feed-forward loop to activate the expression of genes involved in JA biosynthesis and signalling that confers tolerance to abiotic stresses and regulates auxin-dependent root development. Ectopic expression of JAUP1 alleviates abscisic acid- and salt-mediated suppression of lateral root (LR) growth. JAUP1 is primarily expressed in the root cap and epidermal cells (EPCs) that protect the meristematic stem cells and emerging LRs. Wound-activated JA/JAUP1 signalling promotes crosstalk between the root cap of LR and parental root EPCs, as well as induces cell wall remodelling in EPCs overlaying the emerging LR, thereby facilitating LR emergence even under ABA-suppressive conditions. Elevated expression of JAUP1 in transgenic rice or natural rice accessions enhances abiotic stress tolerance and reduces grain yield loss under a limited water supply. We reveal a hitherto unappreciated role for wound-induced JA in LR development under abiotic stress and suggest that JAUP1 can be used in biotechnology and as a molecular marker for breeding rice adapted to extreme environmental challenges and for the conservation of water resources. |
|---|---|
| MeSH term(s) | Oryza/genetics ; Oryza/metabolism ; Plant Proteins/genetics ; Plant Proteins/metabolism ; Plant Breeding ; Plant Growth Regulators/metabolism ; Gene Expression Regulation, Plant/genetics ; Cyclopentanes ; Oxylipins |
| Chemical Substances | jasmonic acid (6RI5N05OWW) ; Plant Proteins ; Plant Growth Regulators ; Cyclopentanes ; Oxylipins |
| Language | English |
| Publishing date | 2024-01-09 |
| Publishing country | England |
| Document type | Journal Article |
| ZDB-ID | 2136367-5 |
| ISSN | 1467-7652 ; 1467-7652 |
| ISSN (online) | 1467-7652 |
| ISSN | 1467-7652 |
| DOI | 10.1111/pbi.14276 |
| Database | MEDical Literature Analysis and Retrieval System OnLINE |
More links
Kategorien
Order via subito
This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.