Candytuft plants' chemistry confirms their family tree
Zare G, Diker NY, Kaplan O, Çilden E, Çankaya İİ
Chemotaxonomy
The candytuft flowers sold as garden border plants belong to a genus with hidden chemical diversity, and this kind of chemical fingerprinting could eventually help breeders or herbalists pinpoint which wild relatives carry the most promising compounds.
Researchers took candytuft plants, a group of flowering plants in the mustard family found mainly around the Mediterranean, and ran their chemical profiles through a sensitive lab technique called LC-MS. They found that the basic metabolism was pretty similar across all the species, but the special defense and flavor compounds varied a lot between them, and those differences lined up well with how scientists had already grouped the species using DNA and physical features. This gives botanists a new tool to double check plant family trees and spot species that might be especially rich in useful compounds.
Key Findings
149 LC-MS metabolite features were putatively annotated across Iberis taxa collected in Türkiye, including four endemic species
Primary (core) metabolites were highly conserved across species, while secondary metabolites showed significant interspecific variation and drove taxonomic clustering
Multivariate metabolite clustering matched existing molecular phylogenetic and morphological groupings, including distinct clusters for I. sempervirens, I. saxatilis, I. odorata, and the I. simplex complex, with riboflavin and tryptophan metabolism pathways enriched
chevron_right Technical Summary
Scientists analyzed the chemical makeup of candytuft plants (genus Iberis) growing in Türkiye and found that their chemistry largely matches what DNA and physical traits already told botanists about how these species are related, while also revealing new bioactive compounds worth exploring.
Abstract Preview
Original paper
Metabolomic Profiling-Based Chemotaxonomic Evaluation of the Genus Iberis L. (Brassicaceae) In Türkiye.
The genus Iberis is mainly distributed in the Mediterranean basin, with Europe representing the primary center of diversity, while a limited number of species occur in Northwest Africa and Southwes...
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Iberis, commonly called candytuft, is a genus of flowering plants belonging to the family Brassicaceae. It comprises annuals, evergreen perennials and subshrubs native to the Old World. Species are native to the Mediterranean basin, Western Asia, the Caucasus, and western Europe. The name "candyt...