Transcriptome profiling of genes and pathways associated with arsenic toxicity and tolerance in Arabidopsis.

ABSTRACT:

Background

Arsenic (As) is a toxic metalloid found ubiquitously in the environment and widely considered an acute poison and carcinogen. However, the molecular mechanisms of the plant response to As and ensuing tolerance have not been extensively characterized. Here, we report on transcriptional changes with As treatment in two Arabidopsis accessions, Col-0 and Ws-2.

Results

The root elongation rate was greater for Col-0 than Ws-2 with As exposure. Accumulation of As was lower in the more tolerant accession Col-0 than in Ws-2. We compared the effect of As exposure on genome-wide gene expression in the two accessions by comparative microarray assay. The genes related to heat response and oxidative stresses were common to both accessions, which indicates conserved As stress-as

SUBMITTER: Fu SF 

PROVIDER: S-EPMC4021232 | biostudies-literature | 2014 Apr

REPOSITORIES: biostudies-literature