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Local brassinosteroid biosynthesis enables optimal root growth
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SYSNO ASEP 0546623 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Local brassinosteroid biosynthesis enables optimal root growth Author(s) Vukašinović, N. (BE)
Wang, Y. (BE)
Vanhoutte, I. (BE)
Fendrych, M. (CZ)
Guo, B. (US)
Kvasnica, Miroslav (UEB-Q) RID, ORCID
Jiroutová, Petra (UEB-Q) ORCID
Oklešťková, Jana (UEB-Q) RID, ORCID, SAI
Strnad, Miroslav (UEB-Q) RID, ORCID
Russinova, E. (BE)Number of authors 10 Source Title Nature Plants - ISSN 2055-026X
Roč. 7, č. 5 (2021), s. 619-632Number of pages 14 s. Language eng - English Country GB - United Kingdom Keywords CELL-DIVISION ; GENE-EXPRESSION ; ARABIDOPSIS OECD category Biochemistry and molecular biology R&D Projects EF16_019/0000827 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Open access Institutional support UEB-Q - RVO:61389030 UT WOS 000651914200015 EID SCOPUS 85106018517 DOI 10.1038/s41477-021-00917-x Annotation Brassinosteroid (BR) hormones are indispensable for root growth and control both cell division and cell elongation through the establishment of an increasing signalling gradient along the longitudinal root axis. Because of their limited mobility, the importance of BR distribution in achieving a signalling maximum is largely overlooked. Expression pattern analysis of all known BR biosynthetic enzymes revealed that not all cells in the Arabidopsis thaliana root possess full biosynthetic machinery, and that completion of biosynthesis relies on cell-to-cell movement of hormone precursors. We demonstrate that BR biosynthesis is largely restricted to the root elongation zone, where it overlaps with BR signalling maxima. Moreover, optimal root growth requires hormone concentrations to be low in the meristem and high in the root elongation zone, attributable to increased biosynthesis. Our finding that spatiotemporal regulation of hormone synthesis results in local hormone accumulation provides a paradigm for hormone-driven organ growth in the absence of long-distance hormone transport in plants. 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/10.1038/s41477-021-00917-x
Number of the records: 1