Iberis ( ),[ Sunset Western Garden Book, 1995:606–607] commonly called candytuft, is a genus of belonging to the family Brassicaceae. It comprises annual plant, evergreen perennial plant and native plant to the Old World. The name "candytuft" is not related to candy, but derives from Candia, the former name of Heraklion on the Island of Crete.
In the language of flowers, the candytuft symbolizes indifference.
Species
Iberis consists of about 30 species of annuals, perennials and evergreen subshrubs. Some of the better known are:
Iberis amara - rocket candytuft, bitter candytuft, wild candytuft
Iberis ciliata
Iberis gibraltarica - Gibraltar candytuft
Iberis linifolia
Iberis procumbens - dune candytuft
Iberis saxatilis - rock candytuft
Iberis sempervirens - evergreen candytuft, perennial candytuft
Iberis umbellata - globe candytuft
They are used as ornamental plants for rock gardens, bedding, and borders in full sun or light shade.
Trophic connections
These plants provide nourishment for a number of insect species of which the rare
Euchloe tagis butterfly is the most striking example as it is monophagous on species in this genus.
Biochemical defenses
Species in the genus
Iberis contain not only
glucosinolates, which are characteristic chemical defenses of the
Brassicaceae plant family, but also
cucurbitacins,
which are better known as chemical defenses in the
Cucurbitaceae plant family. Cucurbitacins from
Iberis amara have antifeedant activity against the
Brassicaceae-feeding specialist
Pieris rapae (
Pieris rapae).
Cucurbitacins from
Iberis umbellata (
Iberis umbellata) are
ecdysteroid antagonists, acting on the
ecdysteroid receptor of
Insect.
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