PTO3 AND PTO4 - NOVEL GENES FROM LYCOPERSICON HIRSUTUM VAR GLABRATUM THAT CONFER RESISTANCE TO PSEUDOMONAS-SYRINGAE PV TOMATO

Authors
STOCKINGER EJ WALLING LL
Citation
Ej. Stockinger et Ll. Walling, PTO3 AND PTO4 - NOVEL GENES FROM LYCOPERSICON HIRSUTUM VAR GLABRATUM THAT CONFER RESISTANCE TO PSEUDOMONAS-SYRINGAE PV TOMATO, Theoretical and Applied Genetics, 89(7-8), 1994, pp. 879-884
Citations number
25
Categorie Soggetti
Genetics & Heredity
Journal title
Theoretical and Applied Genetics → ACNP
ISSN journal
00405752
Volume
89
Issue
7-8
Year of publication
1994
Pages
879 - 884
Database
ISI
SICI code
0040-5752(1994)89:7-8<879:PAP-NG>2.0.ZU;2-1
Abstract
Accessions of wild Lycopersicon germplasm were screened for resistance to Pseudomonas syringae pv tomato (P.s. tomato). Resistance to both r ace-0 and race-1 strains of P.s. tomato was identified in L. pimpinell ifolium, L. peruvianum and L. hirsutum var. glabratum. Resistance to r ace-0 derived from L. hirsutum var. glabratum (Pto3) appeared to be in herited independently of Pto1 and Pto2. Filial and backcross generatio ns derived from interspecific crosses between L. esculentum and L. hir sutum var. glabratum revealed that Pto3 resistance was inherited in a complex fashion and was incompletely dominant under conditions of high bacteria inocula. Resistance to P.s. tomato race-1 (Pto4) was also id entified in L. hirsutum var. glabratum. Pto3 and Pto4 segregated indep endently of each other.