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Does abscisic acid affect strigolactone biosynthesis?
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López-Ráez, Juan A., Kohlen, Wouter, Charnikhova, Tatsiana, Mulder, Patrick, Undas, Anna K., Sergeant, Martin J., Verstappen, Francel, Bugg, Tim, Thompson, Andrew J., Ruyter-Spira, Carolien and Bouwmeester, Harro (2010) Does abscisic acid affect strigolactone biosynthesis? New Phytologist, Vol.87 (No.2). pp. 343-354. doi:10.1111/j.1469-8137.2010.03291.x ISSN 0028-646X.
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Official URL: http://dx.doi.org/10.1111/j.1469-8137.2010.03291.x
Abstract
Strigolactones are considered a novel class of plant hormones that, in addition to their endogenous signalling function, are exuded into the rhizosphere acting as a signal to stimulate hyphal branching of arbuscular mycorrhizal (AM) fungi and germination of root parasitic plant seeds. Considering the importance of the strigolactones and their biosynthetic origin (from carotenoids), we investigated the relationship with the plant hormone abscisic acid (ABA).
Strigolactone production and ABA content in the presence of specific inhibitors of oxidative carotenoid cleavage enzymes and in several tomato ABA-deficient mutants were analysed by LC-MS/MS. In addition, the expression of two genes involved in strigolactone biosynthesis was studied.
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The carotenoid cleavage dioxygenase (CCD) inhibitor D2 reduced strigolactone but not ABA content of roots. However, in abamineSG-treated plants, an inhibitor of 9-cis-epoxycarotenoid dioxygenase (NCED), and the ABA mutants notabilis, sitiens and flacca, ABA and strigolactones were greatly reduced. The reduction in strigolactone production correlated with the downregulation of LeCCD7 and LeCCD8 genes in all three mutants.
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The results show a correlation between ABA levels and strigolactone production, and suggest a role for ABA in the regulation of strigolactone biosynthesis.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry Q Science > QH Natural history > QH301 Biology |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) > Warwick HRI (2004-2010) |
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Library of Congress Subject Headings (LCSH): | Abscisic acid -- Research, Plant hormones -- Research, Carotenoids -- Reserach, Biosynthesis | ||||
Journal or Publication Title: | New Phytologist | ||||
Publisher: | Wiley-Blackwell Publishing Ltd. | ||||
ISSN: | 0028-646X | ||||
Official Date: | 10 May 2010 | ||||
Dates: |
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Volume: | Vol.87 | ||||
Number: | No.2 | ||||
Page Range: | pp. 343-354 | ||||
DOI: | 10.1111/j.1469-8137.2010.03291.x | ||||
Status: | Peer Reviewed | ||||
Access rights to Published version: | Open Access (Creative Commons) | ||||
Funder: | Biotechnology and Biological Sciences Research Council (Great Britain) (BBSRC), European Commission (EC), Nederlandse Organisatie voor Wetenschappelijk Onderzoek [Netherlands Organisation for Scientific Research] (NWO), Centre for BioSystems Genomics (CBSG) | ||||
Grant number: | FP6-MEIF-CT-2005-024345 (EC), PERG-02-2007-224751 (EC), BB/D005787/1 (BBSRC) |
Data sourced from Thomson Reuters' Web of Knowledge
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