Effects of high temperature on photosynthesis and related gene expression in poplar.

ABSTRACT:

Background

High temperature, whether transitory or constant, causes physiological, biochemical and molecular changes that adversely affect tree growth and productivity by reducing photosynthesis. To elucidate the photosynthetic adaption response and examine the recovery capacity of trees under heat stress, we measured gas exchange, chlorophyll fluorescence, electron transport, water use efficiency, and reactive oxygen-producing enzyme activities in heat-stressed plants.

Results

We found that photosynthesis could completely recover after less than six hours of high temperature treatment, which might be a turning point in the photosynthetic response to heat stress. Genome-wide gene expression analysis at six hours of heat stress identified 29,896 differentially expressed genes

SUBMITTER: Song Y 

PROVIDER: S-EPMC4036403 | biostudies-literature | 2014 Apr

REPOSITORIES: biostudies-literature