Effects of Genetic Perturbation on Seasonal Life History Plasticity

Like many species, the model plant Arabidopsis thaliana exhibits multiple different life histories in natural environments. We grew mutants impaired in different signaling pathways in field experiments across the species' native European range in order to dissect the mechanisms underlying this variation. Unexpectedly, mutational loss at loci implicated in the cold requirement for flowering had little effect on life history except in late-summer cohorts. A genetically informed photothermal model of progression toward flowering explained most of the observed variation and predicted an abrupt transition from autumn flowering to spring flowering in late-summer germinants. Environmental signals control the timing of this transition, creating a critical window of acute sensitivity to genetic and climatic change that may be common for seasonally regulated life history traits.

[1]  Jeffrey W. White,et al.  Simulating the influence of vernalization, photoperiod and optimum temperature on wheat developmental rates. , 2008, Annals of botany.

[2]  W. Peacock,et al.  Epigenetic regulation of flowering. , 2007, Current opinion in plant biology.

[3]  D. Weigel,et al.  Move on up, it's time for change--mobile signals controlling photoperiod-dependent flowering. , 2007, Genes & development.

[4]  N. Chua,et al.  The GIGANTEA-Regulated MicroRNA172 Mediates Photoperiodic Flowering Independent of CONSTANS in Arabidopsis[W][OA] , 2007, The Plant Cell Online.

[5]  Robert J. Schmitz,et al.  Vernalization: a model for investigating epigenetics and eukaryotic gene regulation in plants. , 2007, Biochimica et biophysica acta.

[6]  W. Powell,et al.  Control of flowering time in temperate cereals: genes, domestication, and sustainable productivity. , 2007, Journal of experimental botany.

[7]  D. Weigel,et al.  Potent Induction of Arabidopsis thaliana Flowering by Elevated Growth Temperature , 2006, PLoS genetics.

[8]  C. Dean,et al.  The Timing of Developmental Transitions in Plants , 2006, Cell.

[9]  Stefan Jansson,et al.  CO/FT Regulatory Module Controls Timing of Flowering and Seasonal Growth Cessation in Trees , 2006, Science.

[10]  Sanjoy Das,et al.  Flowering time control: gene network modelling and the link to quantitative genetics , 2005 .

[11]  G. Coupland,et al.  Distinct Roles of GIGANTEA in Promoting Flowering and Regulating Circadian Rhythms in Arabidopsis , 2005, The Plant Cell Online.

[12]  M. Schmid,et al.  Diversity of Flowering Responses in Wild Arabidopsis thaliana Strains , 2005, PLoS genetics.

[13]  J. Martínez-Zapater,et al.  Environmental regulation of flowering. , 2005, The International journal of developmental biology.

[14]  F. Villalobos,et al.  Modelling olive flowering date using chilling for dormancy release and thermal time , 2004 .

[15]  R. Amasino,et al.  Vernalization in Arabidopsis thaliana is mediated by the PHD finger protein VIN3 , 2004, Nature.

[16]  M. Koornneef,et al.  A genetic and physiological analysis of late flowering mutants in Arabidopsis thaliana , 1991, Molecular and General Genetics MGG.

[17]  D. Neale,et al.  From genotype to phenotype: unraveling the complexities of cold adaptation in forest trees , 2003 .

[18]  R. Amasino,et al.  Attenuation of FLOWERING LOCUS C activity as a mechanism for the evolution of summer-annual flowering behavior in Arabidopsis , 2003, Proceedings of the National Academy of Sciences of the United States of America.

[19]  D. Weigel,et al.  A thermosensory pathway controlling flowering time in Arabidopsis thaliana , 2003, Nature Genetics.

[20]  Stephen M. Welch,et al.  A Genetic Neural Network Model of Flowering Time Control in , 2003 .

[21]  Stephen M. Welch,et al.  A Genetic Neural Network Model of Flowering Time Control in Arabidopsis thaliana , 2003 .

[22]  C. Dean,et al.  Arabidopsis, the Rosetta stone of flowering time? , 2002, Science.

[23]  R. Amasino,et al.  Loss of FLOWERING LOCUS C Activity Eliminates the Late-Flowering Phenotype of FRIGIDA and Autonomous Pathway Mutations but Not Responsiveness to Vernalization , 2001, Plant Cell.

[24]  R. Amasino,et al.  Effect of Vernalization, Photoperiod, and Light Quality on the Flowering Phenotype of Arabidopsis Plants Containing the FRIGIDA Gene , 1995, Plant physiology.

[25]  R. Simon,et al.  The CONSTANS gene of arabidopsis promotes flowering and encodes a protein showing similarities to zinc finger transcription factors , 1995, Cell.

[26]  L. Thompson.  The Spatiotemporal Effects of Nitrogen and Litter on the Population Dynamics of Arabidopsis Thaliana , 1994 .

[27]  R. N. Wilson,et al.  Gibberellin Is Required for Flowering in Arabidopsis thaliana under Short Days. , 1992, Plant physiology.