Hens-and-chicks succulents build sugary armor to survive cold
Climate Adaptation
If you grow hens-and-chicks on a rock garden or windowsill, this is the chemistry behind why they shrug off frost that would kill most other succulents.
Researchers took a close look at the chemical makeup of Sempervivum tectorum, the hardy succulent often called hens-and-chicks, and identified a group of complex sugar-decorated molecules called kaempferol glycosides. These compounds were studied as part of a bigger project tracking how the plant's chemistry shifts when temperatures drop from 20 to 10 to 0 degrees Celsius, work that helps explain how this tough little rosette survives winters that wipe out less hardy plants.
Key Findings
Used gradient centrifugal partition chromatography (CPC) combined with HiFSA (NMR fingerprinting) to purify and structurally identify highly glycosylated kaempferol derivatives
Data generated from LC-MS/MS molecular networking and metabolite dereplication of Sempervivum tectorum extracts
Plants were sampled across three temperature conditions (20°C, 10°C, and 0°C) to study cold acclimation chemistry
chevron_right Technical Summary
Scientists used advanced chemical separation and NMR techniques to map out a complex set of sugar-coated plant compounds in hens-and-chicks (Sempervivum tectorum), as part of a larger study on how these succulents chemically adapt to cold.
Abstract Preview
Original paper
Gradient CPC purification and HiFSA-assisted structural elucidation of highly glycosylated kaempferol derivatives from Sempervivum tectorum hydroethanolic extract
Data associated with the molecular networking and metabolite annotation analyses performed in the study “Metabolic plasticity during cold acclimation in succulent Sempervivum species: an integrativ...
open_in_new Read full abstractAbstract copyright held by the original publisher.
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Sempervivum tectorum, the common houseleek, is a species of flowering plant in the family Crassulaceae, native to the mountains of southern Europe, cultivated in the whole of Europe for its appearance and a Roman-era tradition claiming that it protects buildings against lightning strikes.