- THIS ARTICLE
- Full Text
- Full Text (PDF)
- Supplemental Data
-
All Versions of this Article:
genetics.105.047522v1
172/3/1845 most recent - Alert me when this article is cited
- Alert me if a correction is posted
- SERVICES
- Email this article to a friend
- Similar articles in this journal
- Similar articles in PubMed
- Alert me to new issues of the journal
- Download to citation manager
- Reprints & Permissions
- CITING ARTICLES
- Citing Articles via HighWire
- Citing Articles via Google Scholar
- GOOGLE SCHOLAR
- Articles by Ingvarsson, P. K.
- Articles by Jansson, S.
- Search for Related Content
- PUBMED
- PubMed Citation
- Articles by Ingvarsson, P. K.
- Articles by Jansson, S.
Originally published as Genetics Published Articles Ahead of Print on December 15, 2005.
Genetics, Vol. 172, 1845-1853, March 2006, Copyright © 2006
doi:10.1534/genetics.105.047522
Clinal Variation in phyB2, a Candidate Gene for Day-Length-Induced Growth Cessation and Bud Set, Across a Latitudinal Gradient in European Aspen (Populus tremula)
Pär K. Ingvarsson*,1,
M. Victoria García*,
David Hall*,
Virginia Luquez
and
Stefan Jansson
* Department of Ecology and Environmental Science and Department of Plant Physiology, Umeå Plant Science Centre, University of Umeå, SE-891 87 Umeå, Sweden
1 Corresponding author: Department of Ecology and Environmental Science, University of Umeå, SE-891 87 Umeå, Sweden.
E-mail: pelle{at}wallace.emg.umu.se
The initiation of growth cessation and dormancy represents a critical ecological and evolutionary trade-off between survival and growth in most forest trees. The most important environmental cue regulating the initiation of dormancy is a shortening of the photoperiod and phytochrome genes have been implicated in short-day-induced bud set and growth cessation in Populus. We characterized patterns of DNA sequence variation at the putative candidate gene phyB2 in 4 populations of European aspen (Populus tremula) and scored single-nucleotide polymorphisms in an additional 12 populations collected along a latitudinal gradient in Sweden. We also measured bud set from a subset of these trees in a growth chamber experiment. Buds set showed significant clinal variation with latitude, explaining 
90% of the population variation in bud set. A sliding-window scan of phyB2 identified six putative regions with enhanced population differentiation and four SNPs showed significant clinal variation. The clinal variation at individual SNPs is suggestive of an adaptive response in phyB2 to local photoperiodic conditions. Three of four SNPs showing clinal variation were located in regions with excessive genetic differentiation, demonstrating that searching for regions of high genetic differentiation can be useful for identifying sites putatively involved in local adaptation.
This article has been cited by other articles:
 |
|
 |
|
  U. Lagercrantz At the end of the day: a common molecular mechanism for photoperiod responses in plants? J. Exp. Bot., July 1, 2009; 60(9): 2501 - 2515. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 H. Ikeda, N. Fujii, and H. Setoguchi Molecular Evolution of Phytochromes in Cardamine nipponica (Brassicaceae) Suggests the Involvement of PHYE in Local Adaptation Genetics, June 1, 2009; 182(2): 603 - 614. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 Y. Fracheboud, V. Luquez, L. Bjorken, A. Sjodin, H. Tuominen, and S. Jansson The Control of Autumn Senescence in European Aspen Plant Physiology, April 1, 2009; 149(4): 1982 - 1991. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
P. K. Ingvarsson, M. V. Garcia, V. Luquez, D. Hall, and S. Jansson Nucleotide Polymorphism and Phenotypic Associations Within and Around the phytochrome B2 Locus in European Aspen (Populus tremula, Salicaceae) Genetics, April 1, 2008; 178(4): 2217 - 2226. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 D. L. Filiault, C. A. Wessinger, J. R. Dinneny, J. Lutes, J. O. Borevitz, D. Weigel, J. Chory, and J. N. Maloof Amino acid polymorphisms in Arabidopsis phytochrome B cause differential responses to light PNAS, February 26, 2008; 105(8): 3157 - 3162. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 U. Arunyawat, W. Stephan, and T. Stadler Using Multilocus Sequence Data to Assess Population Structure, Natural Selection, and Linkage Disequilibrium in Wild Tomatoes Mol. Biol. Evol., October 1, 2007; 24(10): 2310 - 2322. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 H. Bohlenius, T. Huang, L. Charbonnel-Campaa, A. M. Brunner, S. Jansson, S. H. Strauss, and O. Nilsson CO/FT Regulatory Module Controls Timing of Flowering and Seasonal Growth Cessation in Trees Science, May 19, 2006; 312(5776): 1040 - 1043. [Abstract] [Full Text] [PDF]
|
|