The transcriptome of Arabidopsis thaliana during systemic acquired resistance.
Infected plants undergo transcriptional reprogramming during initiation of both local defence and systemic acquired resistance (SAR). We monitored gene-expression changes in Arabidopsis thaliana under 14 different SAR-inducing or SAR-repressing conditions using a DNA microarray representing approximately 25-30% of all A. thaliana genes. We derived groups of genes with common regulation patterns, or regulons. The regulon containing PR-1, a reliable marker gene for SAR in A. thaliana, contains known PR genes and novel genes likely to function during SAR and disease resistance. We identified a common promoter element in genes of this regulon that binds members of a plant-specific transcription factor family. Our results extend expression profiling to definition of regulatory networks and gene discovery in plants.
Maleck
K
K
Syngenta, Research Triangle Park, North Carolina, USA.
Levine
A
A
Eulgem
T
T
Morgan
A
A
Schmid
J
J
Lawton
K A
KA
Dangl
J L
JL
Dietrich
R A
RA
D017360:Arabidopsis / Q000235:genetics* / Q000378:metabolism / Q000382:microbiology; D016000:Cluster Analysis; D018506:Gene Expression Regulation, Plant; D017343:Genes, Plant; D020411:Oligonucleotide Array Sequence Analysis; D009868:Oomycetes / Q000469:parasitology; D010935:Plant Diseases / Q000235:genetics / Q000382:microbiology; D011401:Promoter Regions, Genetic; D018085:Regulon; D014157:Transcription Factors / Q000235:genetics / Q000378:metabolism; D014158:Transcription, Genetic
D014157:Transcription Factors