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Nitrate signaling promotes plant growth by upregulating gibberellin biosynthesis and destabilization of DELLA proteins
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SYSNO ASEP 0553400 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Nitrate signaling promotes plant growth by upregulating gibberellin biosynthesis and destabilization of DELLA proteins Author(s) Camut, L. (FR)
Gallova, B. (GB)
Jilli, L. (FR)
Sirlin-Josserand, M. (FR)
Carrera, E. (ES)
Sakvarelidze-Achard, L. (FR)
Ruffel, S. (FR)
Krouk, G. (FR)
Thomas, S. G. (GB)
Hedden, Peter (UEB-Q) ORCID
Phillips, A. L. (GB)
Davière, J. M. (FR)
Achard, P. (FR)Number of authors 13 Source Title Current Biology. - : Cell Press - ISSN 0960-9822
Roč. 31, č. 22 (2021), s. 4971-4982Number of pages 12 s. Language eng - English Country GB - United Kingdom Keywords Arabidopsis ; DELLA proteins ; gibberellins ; growth ; hormone biosynthesis ; nitrate ; plant development ; wheat OECD category Plant sciences, botany R&D Projects GA18-10349S GA ČR - Czech Science Foundation (CSF) GA20-17984S GA ČR - Czech Science Foundation (CSF) EF16_019/0000738 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Open access Institutional support UEB-Q - RVO:61389030 UT WOS 000730117100008 EID SCOPUS 85119347282 DOI 10.1016/j.cub.2021.09.024 Annotation 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 andindependent manner, respectively. Our findings establish a connection between nitrate and GA signaling pathways that allow plants to adapt their growth to nitrate availability. Workplace Institute of Experimental Botany Contact David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Year of Publishing 2022 Electronic address http://doi.org/10.1016/j.cub.2021.09.024
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