Journal
PLANT PATHOLOGY
Volume 66, Issue 7, Pages 1103-1109Publisher
WILEY
DOI: 10.1111/ppa.12656
Keywords
L3707 tomato line; screening; Solanum lycopersicum; Solanum pimpinellifolium
Categories
Funding
- National Science Foundation (NSF) [IOS-1025642]
- Division Of Integrative Organismal Systems
- Direct For Biological Sciences [1546625] Funding Source: National Science Foundation
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Tomato (Solanum lycopersicum) is the second most important vegetable crop in the world. Bacterial spot (BS) of tomato, caused by four species of Xanthomonas: X. euvesicatoria, X. vesicatoria, X. perforans and X. gardneri, results in severe loss in yield and quality due to defoliation and formation of lesions on fruits, respectively. Currently management practices do not offer effective control under conditions of high disease pressure. Thus, developing BS resistance is a critical priority for tomato growers in order to minimize crop losses. Sixty-three advanced tomato breeding lines, heirlooms and wild tomato lines with diverse genetic backgrounds were screened under greenhouse and field conditions for BS resistance using X. perforans race T4, which was found to be a prevalent race in North Carolina. Race T4 isolate 9 was used to inoculate the plants by spraying, and disease severity was measured using the Horsfall-Barratt scale. Tomato lines 74L-1W(2008), NC2CELBR, 081-12-1X-gsms, NC22L-1 (2008) and 52LB-1 showed resistance to BS in the field and/or greenhouse trials. These lines were derived from S. pimpinellifolium L3707. Screening L3707 followed by development of a mapping population and mapping resistance genes might be useful for breeding resistance against BS in future breeding programmes.
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