Intraspecific glucosinolate chemodiversity in Cardamine hirsuta

Cardamine hirsuta accessions show profound glucosinolate chemodiversity, with 14 glucosinolates confirmed and strong organ-specific differences between leaves and roots.

• Why it matters: Glucosinolates are characteristic for Brassicales and are partly genetically determined, yet C. hirsuta chemodiversity and its genetic variation across accessions and organs were poorly characterized.
• What they did: Leaves and roots from offspring of 18 accessions from nine countries were grown under standardized conditions, then glucosinolate profiles were quantified by HPLC-DAD and identified by UHPLC-QToF-MS/MS.
• The result: Variation among accessions was driven by but-3-enyl versus pent-4-enylglucosinolate and benzyl versus phenethylglucosinolate, while offspring within accessions were mostly consistent; local proximity still produced distinct profiles, and roots showed near-universal 1-methoxyindol-3-ylmethylglucosinolate.

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