Analysis of Short-Term Metabolic Alterations in Arabidopsis Following Changes in the Prevailing Environmental Conditions  

作　　者：Alexandra Florian Zoran Nikoloski Ronan Sulpice Stefan Timm Wagner L. Araujo Takayuki Tohge Hermann Bauwe Alisdair R. Fernie 

机构地区：[1]Max-Planck-Institut for Molekulare Pflanzenphysiologie, Am Muhlenberg 1, 14476 Potsdam-Golm, Germany [2]NUIG, Plant Systems Biology Lab, Plant and AgriBiosciences Research Centre, Botany and Plant Science, Galway, Ireland [3]Department of Plant Physiology, University of Rostock, D-18059 Rostock, Germany [4]Departamento de Biologia Vegetal, Universidade Federal de Vicosa, 36570-000 Vicosa, Minas Gerais, Brazil

出　　处：《Molecular Plant》2014年第5期893-911,共19页分子植物（英文版）

摘　　要：Although a considerable increase in our knowledge concerning the importance of metabolic adjustments to unfavorable growth conditions has been recently provided, relatively little is known about the adjustments which occur in response to fluctuation in environmental factors. Evaluating the metabolic adjustments occurring under changing environmental conditions thus offers a good opportunity to increase our current understanding of the crosstalk between the major pathways which are affected by such conditions. To this end, plants growing under normal conditions were transferred to different light and temperature conditions which were anticipated to affect （amongst other processes） the rates of photosynthesis and photorespiration and characterized at the physiological, molecular, and metabolic levels following this transition. Our results revealed similar behavior in response to both treatments and imply a tight connec- tivity of photorespiration with the major pathways of plant metabolism. They further highlight that the majority of the regulation of these pathways is not mediated at the level of transcription but that leaf metabolism is rather pre-poised to adapt to changes in these input parameters.Although a considerable increase in our knowledge concerning the importance of metabolic adjustments to unfavorable growth conditions has been recently provided, relatively little is known about the adjustments which occur in response to fluctuation in environmental factors. Evaluating the metabolic adjustments occurring under changing environmental conditions thus offers a good opportunity to increase our current understanding of the crosstalk between the major pathways which are affected by such conditions. To this end, plants growing under normal conditions were transferred to different light and temperature conditions which were anticipated to affect （amongst other processes） the rates of photosynthesis and photorespiration and characterized at the physiological, molecular, and metabolic levels following this transition. Our results revealed similar behavior in response to both treatments and imply a tight connec- tivity of photorespiration with the major pathways of plant metabolism. They further highlight that the majority of the regulation of these pathways is not mediated at the level of transcription but that leaf metabolism is rather pre-poised to adapt to changes in these input parameters.

关 键 词：central metabolism environmental perturbation gene expression metabolic regulation PHOTORESPIRATION PHOTOSYNTHESIS ribulose-1 5-bisphosphate carboxylase/oxygenase （RubisCO）. 

分 类 号：Q943[生物学—植物学] TS202.3[轻工技术与工程—食品科学]