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ID 54038
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Yoshimoto, Kaori Department of Biological Science, Graduate School of Natural Science and Technology, Okayama University
Takamura, Hiroyoshi Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University ORCID Kaken ID publons researchmap
Kadota, Isao Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University Kaken ID publons researchmap
Motose, Hiroyasu Department of Biological Science, Graduate School of Natural Science and Technology, Okayama University ORCID Kaken ID publons researchmap
Takahashi, Taku Department of Biological Science, Graduate School of Natural Science and Technology, Okayama University ORCID Kaken ID researchmap
Abstract
The xylem conducts water and minerals from the root to the shoot and provides mechanical strength to the plant body. The vascular precursor cells of the procambium differentiate to form continuous vascular strands, from which xylem and phloem cells are generated in the proper spatiotemporal pattern. Procambium formation and xylem differentiation are directed by auxin. In angiosperms, thermospermine, a structural isomer of spermine, suppresses xylem differentiation by limiting auxin signalling. However, the process of auxin-inducible xylem differentiation has not been fully elucidated and remains difficult to manipulate. Here, we found that an antagonist of spermidine can act as an inhibitor of thermospermine biosynthesis and results in excessive xylem differentiation, which is a phenocopy of a thermospermine-deficient mutant acaulis5 in Arabidopsis thaliana. We named this compound xylemin owing to its xylem-inducing effect. Application of a combination of xylemin and thermospermine to wild-type seedlings negates the effect of xylemin, whereas co-treatment with xylemin and a synthetic proauxin, which undergoes hydrolysis to release active auxin, has a synergistic inductive effect on xylem differentiation. Thus, xylemin may serve as a useful transformative chemical tool not only for the study of thermospermine function in various plant species but also for the control of xylem induction and woody biomass production.
Published Date
2016-02-16
Publication Title
Scientific Reports
Volume
volume6
Publisher
Nature Publishing
Start Page
21487
ISSN
2045-2322
Content Type
Journal Article
language
英語
OAI-PMH Set
岡山大学
File Version
publisher
PubMed ID
DOI
Web of Science KeyUT
Related Url
isVersionOf https://doi.org/10.1038/srep21487
License
http://creativecommons.org/licenses/by/4.0/
Citation
Yoshimoto K, Takamura H, Kadota I, Motose H, Takahashi T. Chemical control of xylem differentiation by thermospermine, xylemin, and auxin. Sci Rep. 2016;6:21487. Published 2016 Feb 16. doi:10.1038/srep21487
Funder Name
Japan Society for the Promotion of Science
助成番号
22370021
23119513
25119715
25440137
26113516