elaiosome


Also found in: Wikipedia.
Related to elaiosome: Myrmecochory

elaiosome

(ɪˈleɪəˌsəʊm)
n
(Botany) an oil-rich body on seeds or fruits that attracts ants, which act as dispersal agents
[from Greek elaion oil + -some3]
References in periodicals archive ?
Some plants produce a protein-packed treat called an elaiosome and attach it to each seed.
The protuberant base has been described as a horseshoe, circular torus, callus-ring, caruncle, basal constricted zone, or elaiosome.
Attached to each tiny seed is a fleshy appendage called an elaiosome that's rich in protein and lipids, but serves no direct impact to the seed's survival.
Further observations suggest that the seed damage occurs primarily to the seed elaiosome and secondarily impacts the seed coat.
vacciniifolia is an elaiosome, an oil-rich structure, which suggests a likely adaptation for myrmecochorous (ant) dispersal (Fig.
khasiana Cyananthus delavayi Capsule No adaptation 1.8 Arenaria barbata Capsule No adaptation Meconopsis racemosa Capsule No adaptation 1-2 Rhodiola primuloides Follicle Wing 0.5-1 Saussurea spathulifolia Achene Pappus 4 Saussurea centiloba Achene Pappus Ligusticum sikiangense Cremocarp Wing, elaiosome The late stage/Dominant species Kobresia fragilis Nutlet No adaptation 2-2.4 Carex capilliformis Nutlet No adaptation 2 Ligusticum rechingerana Cremocarp Elaiosome Ligusticum sikiangense Cremocarp Wing, elaiosome Common species Saxifraga sp.
Specialization for this mutualism involves plants producing small seeds that have a fat-rich aril (elaiosome).
Ants are attracted to a lipid-rich body attached to the seed, termed the elaiosome, which is characteristic of myrmecochorous systems.
Most myrmechorous diaspores have a lipid-rich structure, such as an elaiosome, which is the food item desired by the ant; the attached seed is just ballast.
Ants have the potential to provide all three of the aforementioned "services" (movement away from parent plants, seed burial, and elaiosome removal) to seeds.
Both the presence of an elaiosome and seed strength have important effects on the removal rate of seeds by ants in the field.