Autophagy is a conserved catabolic process in eukaryotes that contributes to cell survival in response to multiple stresses and is important for organism fitness. In, the core machinery of autophagy is well defined, but its transcriptional regulation is largely unknown. The ATG8 (autophagy-related 8) protein plays central roles in decorating autophagosomes and binding to specific cargo receptors to recruit cargo to autophagosomes. We propose that the transcriptional control ofgenes is important during the formation of autophagosomes and therefore contributes to survival during stress. Here, we describe a yeast one-hybrid (Y1H) screen for transcription factors (TFs) that regulategene expression in, using the promoters of 4genes. We identified a total of 225 TFs from 35 families that bind these promoters. The TF-promoter interactions revealed a wide array of diverse TF families for different promoters, as well as enrichment for families of TFs that bound to specific fragments. These TFs are not only involved in plant developmental processes but also in the response to environmental stresses. TGA9 (TGACG (TGA) motif-binding protein 9)/AT1G08320 was confirmed as a positive regulator of autophagy. TGA9 overexpression activated autophagy under both control and stress conditions and transcriptionally up-regulated expression ofand additionalgenes via binding to their promoters. Our results provide a comprehensive resource of TFs that regulategene expression and lay a foundation for understanding the transcriptional regulation of plant autophagy.ABRC:biological resource center; AP2-EREBP: APETALA2/Ethylene-responsive element binding protein; ARF: auxin response factor; ATF4: activating transcription factor 4; ATG: autophagy-related; ChIP: chromatin immunoprecipitation; DAP-seq: DNA affinity purification sequencing; FOXO: forkhead box O; GFP: green fluorescent protein; GO: gene ontologies; HB: homeobox; LD: long-day; LUC: firefly luciferase; MAP1LC3: microtubule associated protein 1 light chain 3; MDC: monodansylcadaverine; 3-MA: 3-methyladenine; OE: overexpressing; PCD: programmed cell death; qPCR: quantitative polymerase chain reaction; REN: renilla luciferase; RT: room temperature; SD: standard deviation; TF: transcription factor; TFEB: transcription factor EB; TGA: TGACG motif; TOR: target of rapamycin; TSS: transcription start site; WT: wild-type; Y1H: yeast one-hybrid. Arabidopsis thaliana ATG8ATG8Arabidopsis ATG8ATG8ATG8B, ATG8E ATG ATG8Arabidopsis Abbreviations:
