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Soluble Carbohydrates Regulate Auxin Biosynthesis via PIF Proteins in Arabidopsis
Umeå University, Faculty of Science and Technology, Umeå Plant Science Centre (UPSC).
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2012 (English)In: The Plant Cell, ISSN 1040-4651, E-ISSN 1532-298X, Vol. 24, no 12, p. 4907-4916Article in journal (Refereed) Published
Abstract [en]

Plants are necessarily highly competitive and have finely tuned mechanisms to adjust growth and development in accordance with opportunities and limitations in their environment. Sugars from photosynthesis form an integral part of this growth control process, acting as both an energy source and as signaling molecules in areas targeted for growth. The plant hormone auxin similarly functions as a signaling molecule and a driver of growth and developmental processes. Here, we show that not only do the two act in concert but that auxin metabolism is itself regulated by the availability of free sugars. The regulation of the biosynthesis and degradation of the main auxin, indole-3-acetic acid (IAA), by sugars requires changes in the expression of multiple genes and metabolites linked to several IAA biosynthetic pathways. The induction also involves members of the recently described central regulator PHYTOCHROME-INTERACTING FACTOR transcription factor family. Linking these three known regulators of growth provides a model for the dynamic coordination of responses to a changing environment.

Place, publisher, year, edition, pages
2012. Vol. 24, no 12, p. 4907-4916
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:umu:diva-66669DOI: 10.1105/tpc.112.104794ISI: 000314063100011Scopus ID: 2-s2.0-84873043146OAI: oai:DiVA.org:umu-66669DiVA, id: diva2:608788
Available from: 2013-03-01 Created: 2013-02-26 Last updated: 2023-03-24Bibliographically approved

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Sandberg, Göran

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf