Integrating transcriptional, metabolomic, and physiological responses to drought stress and recovery in switchgrass (Panicum virgatum L.).

ABSTRACT:

Background

In light of the changes in precipitation and soil water availability expected with climate change, understanding the mechanisms underlying plant responses to water deficit is essential. Toward that end we have conducted an integrative analysis of responses to drought stress in the perennial C4 grass and biofuel crop, Panicum virgatum (switchgrass). Responses to soil drying and re-watering were measured at transcriptional, physiological, and metabolomic levels. To assess the interaction of soil moisture with diel light: dark cycles, we profiled gene expression in drought and control treatments under pre-dawn and mid-day conditions.

Results

Soil drying resulted in reduced leaf water potential, gas exchange, and chlorophyll fluorescence along with differential expres

SUBMITTER: Meyer E 

PROVIDER: S-EPMC4122788 | biostudies-literature | 2014 Jun

REPOSITORIES: biostudies-literature