Bactericera cockerelli resistance in the wild tomato Solanum habrochaites is polygenic and influenced by the presence of Candidatus Liberibacter solanacearum
Autor: | Thiago G. Marconi, Zenaida Viloria, Julianna Kurpis, Carlos A. Avila, Sonia Y. Del Rio |
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Jazyk: | angličtina |
Rok vydání: | 2019 |
Předmět: |
0106 biological sciences
Quantitative trait loci Multifactorial Inheritance Bactericera cockerelli lcsh:Medicine Quantitative trait locus Solanum 01 natural sciences Zebra chip Article Plant breeding Hemiptera Inbred strain Solanum lycopersicum Animals Wild tomato Microbe Cultivar Herbivory lcsh:Science Genetics Multidisciplinary biology lcsh:R fungi food and beverages Phyllobacteriaceae biology.organism_classification Fecundity 010602 entomology lcsh:Q 010606 plant biology & botany |
Zdroj: | Scientific Reports Scientific Reports, Vol 9, Iss 1, Pp 1-11 (2019) |
ISSN: | 2045-2322 |
Popis: | The tomato-potato psyllid (TPP), Bactericera cockerelli, is a vector for the phloem-limited bacterium Candidatus Liberibacter solanacearum (Lso), the causative agent of economically important diseases including tomato vein-greening and potato zebra chip. Here, we screened 11 wild tomato relatives for TPP resistance as potential resources for tomato (Solanum lycopersicum) cultivar development. Six accessions with strong TPP resistance (survival S. habrochaites, S. pennelli, S. huaylasense, S. chmielewskii, S. corneliomulleri, and S. galapagense. Two S. pennelli and S. corneliomulleri accessions also showed resistance to Lso. We evaluated recombinant inbred lines (RILs) carrying resistance from S. habrochaites accession LA1777 in the S. lycopersicum background and identified major quantitative trait loci (QTLs) responsible for adult TPP mortality and fecundity in several RILs carrying insertions in different chromosomes, indicating the polygenic nature of these traits. Analysis of a major resistance QTL in RIL LA3952 on chromosome 8 revealed that the presence of Lso is required to increase adult TPP mortality. By contrast, the reduced TPP oviposition trait in LA3952 is independent of Lso. Therefore, resistance traits are available in wild-tomato species, although their complex inheritance and modes of action require further characterisation to optimise their utilisation for tomato improvement. |
Databáze: | OpenAIRE |
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