Poplar woody root proteome during the transition dormancy-active growth

Abstract

Woody plants living in temperate climates finely regulate their growth and development in relation to seasonal changes; their transition from vegetative to dormancy phase represents an adaptation to their environment. Events occurring in the shoot during onset/release from dormancy have been largely investigated, whereas in woody roots they remain completely unknown. In recent years, we have been interested in understanding the molecular and physiological events occurring in poplar woody root during release from dormancy. Here, we propose the results of a comparative analysis of the proteome of poplar woody root sampled at different time points: T₀ (dormancy condition), T₁ (release from dormancy), and T₂ (full vegetative condition). This study identified proteins that may be involved in the long-term survival of a dormant root or landmarking a specific time point.

Keywords::

• Active growth-dormancy cycle
• growth seasonal changes
• Populus nigra
• root proteome
• woody root