Plant Physiol. Illumina
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
QUICK SEARCH:   [advanced]


     

Plant Physiology Preview
Published on February 6, 2009; 10.1104/pp.108.133249

OPEN ACCESS ARTICLE
This Article
Free via Open Access: OA
Right arrow Full Text (Plant Physiology Preview (PDF))
Right arrow Supplemental Data
Right arrowOA All Versions of this Article:
149/4/1982    most recent
pp.108.133249v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Web of Science (1)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Fracheboud, Y.
Right arrow Articles by Jansson, S.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Fracheboud, Y.
Right arrow Articles by Jansson, S.
Agricola
Right arrow Articles by Fracheboud, Y.
Right arrow Articles by Jansson, S.

Received November 27, 2008
Accepted February 2, 2009

The control of autumn senescence in European aspens (Populus tremula)

Yvan Fracheboud , Virginia Luquez , Lars Bjorken , Andreas Sjodin , Hannele Tuominen , and Stefan Jansson *

Umea Plant Science Centre, Department of Plant Physiology, Umea University, SE-90187 Umea, Sweden

* Corresponding author; email: stefan.jansson{at}plantphys.umu.se.

The initiation, progression and natural variation of autumn senescence in European aspen (Populus tremula) was investigated by monitoring chlorophyll degradation in i) trees growing in natural stands and ii) cloned trees growing in a greenhouse under various light regimes. The main trigger for the initiation of autumn senescence in aspen is the shortening photoperiod, but there was large degree of variation in the onset of senescence, both within local populations and amongst trees originating from different populations, where it correlated with the latitude of their respective origins. The variation for onset of senescence with a population was much larger than the variation of bud set. Once started, autumn senescence was accelerated by low temperature and longer nights, and clones that started to senescence late had a faster senescence. Bud set and autumn senescence appeared to be under the control of two independent critical photoperiods, but senescence could not be initiated until a certain time after bud set, suggesting that bud set and growth arrest is important for the trees to acquire competence to respond to the photoperiodic trigger to undergo autumn senescence. A timetable of events related to bud set and autumn senescence is presented.




This article has been cited by other articles:


Home page
 Tree PhysiolHome page
M. Weih
Genetic and environmental variation in spring and autumn phenology of biomass willows (Salix spp.): effects on shoot growth and nitrogen economy
Tree Physiol, December 1, 2009; 29(12): 1479 - 1490.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
ASPB Publications PLANT PHYSIOLOGY® THE PLANT CELL
Copyright © 2009 by the American Society of Plant Biologists