RT Journal Article SR Electronic T1 Developmental plasticity of Arabidopsis thaliana accessions across an ambient temperature range JF bioRxiv FD Cold Spring Harbor Laboratory SP 017285 DO 10.1101/017285 A1 Carla Ibañez A1 Yvonne Poeschl A1 Tom Peterson A1 Julia Bellstädt A1 Kathrin Denk A1 Andreas Gogol-Döring A1 Marcel Quint A1 Carolin Delker YR 2015 UL http://biorxiv.org/content/early/2015/03/30/017285.abstract AB The global increase in ambient temperature constitutes a significant challenge to wild and cultivated plant species. Yet, a comprehensive knowledge on morphological responses and molecular mechanisms involved is scarce. Studies published to date have largely focused on a few, isolated temperature-relevant phenotypes such as flowering time or hypocotyl elongation. To systematically describe thermomorphogenesis, we profiled more than 30 phenotypic traits throughout an entire life cycle in ten distinct accessions of Arabidopsis thaliana grown in four different ambient temperatures. We observed a uniform acceleration of developmental timing in the vegetative growth phase with a low contribution of genotype effects on variation indicating a passive effect of temperature. In contrast, reproduction-associated phenotypes and several quantitative growth traits were sensitive to both, genotype and temperature effects or could be attributed primarily to either factor. Therefore, the results argue against a general mechanism of passive temperature effects by thermodynamic processes. Temperature responses of several phenotypes rather implicate differential function of specific signaling components that might be targets of adaptation to specific environmental conditions.