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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2002-11-4
pubmed:abstractText
The disease resistance gene Pto encodes a serine/threonine protein kinase that confers resistance in tomato to Pseudomonas syringae pv. tomato strains that express the effector protein AvrPto. Pto-mediated resistance to bacterial speck disease also requires Prf, a protein with leucine-rich repeats and a putative nucleotide-binding site, although the role of Prf in the defense pathway is not known. We used GeneCalling, an open-architecture, mRNA-profiling technology, to identify genes that are either induced or suppressed in leaves 4 h after bacterial infection in the Pto- and Prf-mediated tomato-Pseudomonas(avrPto) interaction. Over 135 000 individual cDNA fragments representing an estimated 90% of the transcripts expressed in tomato leaves were examined and 432 differentially expressed genes were identified. The genes encode over 25 classes of proteins including 11 types of transcription factors and many signal transduction components. Differential expression of 91% of the genes required both Pto and Prf. Interestingly, differential expression of 32 genes did not require Pto but was dependent on Prf. Thus, our data support a role for Prf early in the Pto pathway and indicate that Prf can also function as an independent host recognition determinant of bacterial infection. Comprehensive expression profiling of the Pto-mediated defense response allows the development of many new hypotheses about the molecular basis of resistance to bacterial speck disease.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0960-7412
pubmed:author
pubmed:issnType
Print
pubmed:volume
32
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
299-315
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed-meshheading:12410809-Bacterial Proteins, pubmed-meshheading:12410809-Cluster Analysis, pubmed-meshheading:12410809-DNA, Complementary, pubmed-meshheading:12410809-Gene Expression Profiling, pubmed-meshheading:12410809-Gene Expression Regulation, Plant, pubmed-meshheading:12410809-Immunity, Innate, pubmed-meshheading:12410809-Lycopersicon esculentum, pubmed-meshheading:12410809-Models, Genetic, pubmed-meshheading:12410809-Oligonucleotide Array Sequence Analysis, pubmed-meshheading:12410809-Phylogeny, pubmed-meshheading:12410809-Plant Diseases, pubmed-meshheading:12410809-Plant Leaves, pubmed-meshheading:12410809-Plant Proteins, pubmed-meshheading:12410809-Protein-Serine-Threonine Kinases, pubmed-meshheading:12410809-Pseudomonas, pubmed-meshheading:12410809-Reverse Transcriptase Polymerase Chain Reaction, pubmed-meshheading:12410809-Signal Transduction, pubmed-meshheading:12410809-Transcription Factors
pubmed:year
2002
pubmed:articleTitle
Comprehensive transcript profiling of Pto- and Prf-mediated host defense responses to infection by Pseudomonas syringae pv. tomato.
pubmed:affiliation
Boyce Thompson Institute for Plant Research, Ithaca, NY 14853, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S.