Effects of Genetic Perturbation on Seasonal Life History Plasticity

被引：310

作者：

Wilczek, Amity M. ^{[1
]}

Roe, Judith L. ^{[2
]}

Knapp, Mary C. ^{[2
]}

Cooper, Martha D. ^{[1
]}

Lopez-Gallego, Cristina ^{[1
]}

Martin, Laura J. ^{[1
]}

Muir, Christopher D. ^{[1
]}

Sim, Sheina ^{[2
]}

Walker, Alexis ^{[1
]}

Anderson, Jillian ^{[1
]}

Egan, J. Franklin ^{[1
]}

Moyers, Brook T. ^{[1
]}

Petipas, Renee ^{[1
]}

Giakountis, Antonis ^{[3
]}

Charbit, Erika ^{[2
]}

Coupland, George ^{[3
]}

Welch, Stephen M. ^{[2
]}

Schmitt, Johanna ^{[1
]}

机构：

[1] Brown Univ, Dept Ecol & Evolutionary Biol, Providence, RI 02912 USA

[2] Kansas State Univ, Dept Agron, Manhattan, KS 66506 USA

[3] Max Planck Inst Plant Breeding Res, D-50829 Cologne, Germany

来源：

SCIENCE | 2009年 / 323卷 / 5916期

关键词：

FLOWERING TIME CONTROL; LOCUS-C ACTIVITY; ARABIDOPSIS-THALIANA; VERNALIZATION; PHOTOPERIOD; PHENOTYPE; PLANTS; TEMPERATURE; CONSTANS; GIGANTEA;

D O I：

10.1126/science.1165826

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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.

引用

页码：930 / 934

页数：5

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