The PADRE acronym stands for "pathogen and abiotic stress response, cadmium tolerance, disordered region-containing" and corresponds to DUF4228 (Domain of Unknown Function). We provide a sequence and expression-based characterization of this family in
https://www.frontiersin.org/articles/10.3389/fgene.2020.00491/full
We found 28 genes with a DUF4228 domain in the genome of A. thaliana, 19 of them being differentially expressed upon infection by S. sclerotiorum. 13 genes harboring a DUF4228 domain were in the top 10% most induced genes after infection by S. sclerotiorum in A. thaliana.
Proof that this gene family is cool: it was highlighted in another study on abiotic stress a few days before:
https://bmcgenomics.biomedcentral.com/articles/10.1186/s12864-019-6389-3