umu.sePublications
Change search
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
Storage lipid accumulation is controlled by photoperiodic signal acting via regulators of growth cessation and dormancy in hybrid aspen
Umeå University, Faculty of Science and Technology, Department of Plant Physiology. Umeå University, Faculty of Science and Technology, Umeå Plant Science Centre (UPSC).ORCID iD: 0000-0001-6031-005x
Umeå University, Faculty of Science and Technology, Department of Plant Physiology. Umeå University, Faculty of Science and Technology, Umeå Plant Science Centre (UPSC).
Show others and affiliations
2018 (English)In: New Phytologist, ISSN 0028-646X, E-ISSN 1469-8137, Vol. 219, no 2, p. 619-630Article in journal (Refereed) Published
Abstract [en]

The signalling pathways that control seasonal modulation of carbon metabolism in perennial plants are poorly understood. Using genetic, metabolic and natural variation approaches, we identify factors mediating photoperiodic control of storage lipid accumulation in the model tree hybrid aspen (Populus tremula x tremuloides). We characterized lipid accumulation in transgenic hybrid aspen with impaired photoperiodic and hormonal responses. Genome-wide association mapping was performed in Swedish aspen (P.tremula) genotypes to determine genetic loci associated with genotype variation in lipid content. Our data show that the storage lipid triacylglycerol (TAG) accumulates in cambial meristem and pith rays of aspen in response to photoperiodic signal controlling growth cessation and dormancy induction. We show that photoperiodic control of TAG accumulation is mediated by the FLOWERING LOCUS T/CONSTANS module, which also controls the induction of growth cessation. Hormonal and chromatin remodelling pathways also contribute to TAG accumulation by photoperiodic signal. Natural variation exists in lipid accumulation that is controlled by input from multiple loci. Our data shed light on how the control of storage metabolism is temporally coordinated with growth cessation and dormancy by photoperiodic signal, and reveals that storage lipid accumulation between seeds and perennating organs of trees may involve distinct regulatory circuits.

Place, publisher, year, edition, pages
John Wiley & Sons, 2018. Vol. 219, no 2, p. 619-630
Keywords [en]
abscisic acid (ABA), dormancy, flowering time, growth cessation, lipid biosynthesis, photoperiod, trees, triacylglycerol
National Category
Forest Science
Identifiers
URN: urn:nbn:se:umu:diva-150755DOI: 10.1111/nph.15197ISI: 000435948500017PubMedID: 29761498OAI: oai:DiVA.org:umu-150755DiVA, id: diva2:1242057
Projects
Bio4EnergyAvailable from: 2018-08-27 Created: 2018-08-27 Last updated: 2019-09-06Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textPubMed

Authority records BETA

Street, NathanielRobinson, Kathryn MMähler, Niklas

Search in DiVA

By author/editor
Street, NathanielRobinson, Kathryn MMähler, NiklasIngvarsson, Pär K.Bhalerao, Rishikesh P.
By organisation
Department of Plant PhysiologyUmeå Plant Science Centre (UPSC)
In the same journal
New Phytologist
Forest Science

Search outside of DiVA

GoogleGoogle Scholar

doi
pubmed
urn-nbn

Altmetric score

doi
pubmed
urn-nbn
Total: 105 hits
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