Different Cis-Regulatory Elements Control the Tissue-Specific Contribution of Plastid ω-3 Desaturases to Wounding and Hormone Responses.

ABSTRACT: Trienoic fatty acids are essential constituents of biomembranes and precursors of jasmonates involved in plant defense responses. Two ω-3 desaturases, AtFAD7 and AtFAD8, synthetize trienoic fatty acids in the plastid. Promoter:GUS and mutagenesis analysis was used to identify cis-elements controlling AtFAD7 and AtFAD8 basal expression and their response to hormones or wounding. AtFAD7 promoter GUS activity was much higher than that of AtFAD8 in leaves, with specific AtFAD7 expression in the flower stamen and pistil and root meristem and vasculature. This specific tissue and organ expression of AtFAD7 was controlled by different cis-elements. Thus, promoter deletion and mutagenesis analysis indicated that WRKY proteins mi

SUBMITTER: Lujan MA 

PROVIDER: S-EPMC8578140 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature