Change search
ReferencesLink to record
Permanent link

Direct link
Metabolite signature during short-day induced growth cessation in populus
Umeå University, Faculty of Science and Technology, Department of Chemistry.
Show others and affiliations
2011 (English)In: Frontiers in Plant Physiology, Vol. 2, no 29Article in journal (Refereed) Published
Abstract [en]

The photoperiod is an important environmental signal for plants, and influences a wide range of physiological processes. For woody species in northern latitudes, cessation of growth is induced by short photoperiods. In many plant species, short photoperiods stop elongational growth after a few weeks. It is known that plant daylength detection is mediated by Phytochrome A (PHYA) in the woody hybrid aspen species. However, the mechanism of dormancy involving primary metabolism remains unclear. We studied changes in metabolite profiles in hybrid aspen leaves (young, middle, and mature leaves) during short-day-induced growth cessation, using a combination of gas chromatography–time-of-flight mass spectrometry, and multivariate projection methods. Our results indicate that the metabolite profiles in mature source leaves rapidly change when the photoperiod changes. In contrast, the differences in young sink leaves grown under long and short-day conditions are less distinct. We found short daylength induced growth cessation in aspen was associated with rapid changes in the distribution and levels of diverse primary metabolites. In addition, we conducted metabolite profiling of leaves of PHYA overexpressor (PHYAOX) and those of the control to find the discriminative metabolites between PHYAOX and the control under the short-day conditions. The metabolite changes observed in PHYAOX leaves, together with those in the source leaves, identified possible candidates for the metabolite signature (e.g., 2-oxo-glutarate, spermidine, putrescine, 4-amino-butyrate, and tryptophan) during short-day-induced growth cessation in aspen leaves.

Place, publisher, year, edition, pages
2011. Vol. 2, no 29
Keyword [en]
aspen, Phytochrome A, metabolite profiling, GC-TOF-MS, dormancy, growth cessation
National Category
Biological Sciences
URN: urn:nbn:se:umu:diva-46412DOI: 10.3389/fpls.2011.00029OAI: diva2:438169
Available from: 2011-09-01 Created: 2011-09-01 Last updated: 2013-03-19

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Jonsson, PärSjöström, MichaelTrygg, Johan
By organisation
Department of Chemistry
Biological Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 94 hits
ReferencesLink to record
Permanent link

Direct link