Journal
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Volume 62, Issue 36, Pages 9043-9055Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jf502508y
Keywords
Colorado potato; beetle resistance; untargeted metabolite profiling; potato; Solanum; glycoalkaloid; phenylpropanoid
Funding
- Agriculture and Agri-Food Canada Agricultural Bioproducts Innovation Program
- Developing Innovative Agri-products program
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The Colorado potato beetle Leptinotarsa decemlineata (Say) (CPB) is a coleopteran herbivore that feeds on the foliage on Solanum species, in particular, potato. Six resistant wild Solanum species were identified, and two of these species had low levels of glycoalkaloids. Comparative analysis of the untargeted metabolite profiles of the foliage using UPLC-qTOF-MS was done to find metabolites shared between the wild species but not with Solanum tuberosum (L.) to identify resistance-related metabolites. It was found that only S. tuberosum produced the triose glycoalkaloids solanine and chaconine. Instead, the six wild species produced glycoalkaloids that shared in common tetrose sugar side chains. Additionally, there were non-glycoalkaloid metabolites associated with resistance including hydroxycoumarin and a phenylpropanoid, which were produced in all wild species but not in S. tuberosum.
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