The bZIP transcription factor PsBZP32 is involved in cyst germination, oxidative stress response, and pathogenicity of Phytophthora sojae

Abstract The basic leucine zipper (bZIP) transcription factor family, one of the largest and most diverse families in eukaryotes, is associated with development stress responses many eukaryotic organisms. However, their biological functions oomycete plant pathogens are unclear. A genome-wide analysis bZIP factors Phytophthora sojae showed that PsBZP32, which has a unique bZIP-PAS domain structure, exhibited high level during early stages P. infection. We silenced PsBZP32 found transformants defective cyst germination pathogenicity. could not eliminate host-derived reactive oxygen species infection were more sensitive to oxidative stress. Their response was independent level; however, subcellular localization phosphorylation affected by H 2 O These results indicate involved regulation germination, response,