PMID- 12913147 OWN - NLM STAT- MEDLINE DCOM- 20031021 LR - 20240410 IS - 0032-0889 (Print) IS - 1532-2548 (Electronic) IS - 0032-0889 (Linking) VI - 132 IP - 4 DP - 2003 Aug TI - Overexpression of the disease resistance gene Pto in tomato induces gene expression changes similar to immune responses in human and fruitfly. PG - 1901-12 AB - The Pto gene encodes a serine/threonine protein kinase that confers resistance in tomato (Lycopersicon esculentum) to Pseudomonas syringae pv tomato strains that express the type III effector protein AvrPto. Constitutive overexpression of Pto in tomato, in the absence of AvrPto, activates defense responses and confers resistance to several diverse bacterial and fungal plant pathogens. We have used a series of gene discovery and expression profiling methods to examine the effect of Pto overexpression in tomato leaves. Analysis of the tomato expressed sequence tag database and suppression subtractive hybridization identified 600 genes that were potentially differentially expressed in Pto-overexpressing tomato plants compared with a sibling line lacking Pto. By using cDNA microarrays, we verified changes in expression of many of these genes at various time points after inoculation with P. syringae pv tomato (avrPto) of the resistant Pto-overexpressing line and the susceptible sibling line. The combination of these three approaches led to the identification of 223 POR (Pto overexpression responsive) genes. Strikingly, 40% of the genes induced in the Pto-overexpressing plants previously have been shown to be differentially expressed during the human (Homo sapiens) and/or fruitfly (Drosophila melanogaster) immune responses. FAU - Mysore, Kirankumar S AU - Mysore KS AD - Plant Biology Division, Samuel Roberts Noble Foundation, Ardmore, Oklahoma 73402, USA. kmysore@noble.org FAU - D'Ascenzo, Mark D AU - D'Ascenzo MD FAU - He, Xiaohua AU - He X FAU - Martin, Gregory B AU - Martin GB LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. PL - United States TA - Plant Physiol JT - Plant physiology JID - 0401224 RN - 0 (Plant Proteins) RN - EC 2.7.1.- (Pto protein, Lycopersicon) RN - EC 2.7.11.1 (Protein Serine-Threonine Kinases) SB - IM MH - Animals MH - Drosophila melanogaster/genetics/*immunology MH - Expressed Sequence Tags MH - *Gene Expression Profiling MH - *Gene Expression Regulation, Plant MH - Genes, Plant/genetics MH - Humans MH - Solanum lycopersicum/*genetics/immunology/*microbiology MH - Oligonucleotide Array Sequence Analysis MH - Plant Leaves/genetics/microbiology MH - *Plant Proteins MH - Promoter Regions, Genetic/genetics MH - Protein Serine-Threonine Kinases/*genetics/*metabolism MH - Signal Transduction PMC - PMC181276 EDAT- 2003/08/13 05:00 MHDA- 2003/10/22 05:00 PMCR- 2004/08/01 CRDT- 2003/08/13 05:00 PHST- 2003/08/13 05:00 [pubmed] PHST- 2003/10/22 05:00 [medline] PHST- 2003/08/13 05:00 [entrez] PHST- 2004/08/01 00:00 [pmc-release] AID - 1321901 [pii] AID - 10.1104/pp.103.022731 [doi] PST - ppublish SO - Plant Physiol. 2003 Aug;132(4):1901-12. doi: 10.1104/pp.103.022731.