WRKY6 Transcription Factor Restricts Arsenate Uptake and Transposon Activation in Arabidopsis

ABSTRACT: Stress constantly challenges plant adaptation to the environment. Of all stress types, arsenic was a major threat during the early evolution of plants. The most prevalent chemical form of arsenic is arsenate, whose similarity to phosphate renders it easily incorporated into cells via the phosphate transporters. Here we found that arsenate stress provokes a notable transposon burst in plants, in coordination with arsenate/phosphate transporter repression, which immediately restricts arsenate uptake. This repression was accompanied by delocalization of the phosphate transporter from the plasma membrane. When arsenate was removed, the system rapidly restored transcriptional expression and membrane localization of the transporter. We identify WRKY6 as an arsenate-responsive transcription

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Juan Oliveros 

PROVIDER: E-GEOD-49037 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress