Nitrate signaling promotes plant growth by upregulating gibberellin biosynthesis and destabilization of DELLA proteins
| Autor: | Andrew L. Phillips, Barbora Gallova, Peter Hedden, Sandrine Ruffel, Stephen G. Thomas, Esther Carrera, Lucie Camut, Jean-Michel Davière, Patrick Achard, Mathilde Sirlin-Josserand, Lucas Jilli, Gabriel Krouk, Lali Sakvarelidze-Achard |
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| Přispěvatelé: | Institut de biologie moléculaire des plantes (IBMP), Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), Biochimie et Physiologie Moléculaire des Plantes (BPMP), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Mutant Arabidopsis Growth Biology Nitrate 01 natural sciences General Biochemistry Genetics and Molecular Biology 03 medical and health sciences chemistry.chemical_compound Plant Growth Regulators Gene Expression Regulation Plant Plant development Gene expression [SDV.BV]Life Sciences [q-bio]/Vegetal Biology Plant Proteins 030304 developmental biology 2. Zero hunger 0303 health sciences Nitrates Arabidopsis Proteins Cell growth food and beverages Metabolism Plants biology.organism_classification Gibberellins Cell biology DELLA proteins chemistry Wheat Gibberellin Signal transduction General Agricultural and Biological Sciences Hormone biosynthesis Signal Transduction 010606 plant biology & botany |
| Zdroj: | Current Biology-CB Current Biology-CB, Elsevier, 2021, ⟨10.1016/j.cub.2021.09.024⟩ |
| ISSN: | 0960-9822 1879-0445 |
| DOI: | 10.1016/j.cub.2021.09.024 |
| Popis: | Nitrate, one of the main nitrogen (N) sources for crops, acts as a nutrient and key signaling molecule coordinating gene expression, metabolism, and various growth processes throughout the plant life cycle. It is widely accepted that nitrate-triggered developmental programs cooperate with hormone synthesis and transport to finely adapt plant architecture to N availability. Here, we report that nitrate, acting through its signaling pathway, promotes growth in Arabidopsis and wheat, in part by modulating the accumulation of gibberellin (GA)-regulated DELLA growth repressors. We show that nitrate reduces the abundance of DELLAs by increasing GA contents through activation of GA metabolism gene expression. Consistently, the growth restraint conferred by nitrate deficiency is partially rescued in global-DELLA mutant that lacks all DELLAs. At the cellular level, we show that nitrate enhances both cell proliferation and elongation in a DELLA dependent and independent manner, respectively. Our findings establish a connection between nitrate and GA signaling pathways that allow plants to adapt their growth to nitrate availability plants to adapt their growth to nitrate availability |
| Databáze: | OpenAIRE |
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