eyespot


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Related to eyespot: ISPOT, Eye floaters

eyespot

[′ī‚spät]
(botany)
A small photosensitive pigment body in certain unicellular algae.
A dark area around the hilum of certain seeds, as some beans.
(invertebrate zoology)
A simple organ of vision in many invertebrates consisting of pigmented cells overlying a sensory termination.
(plant pathology)
A fungus disease of sugarcane and certain other grasses which is caused by Helminthosporium sacchari and characterized by yellowish oval lesions on the stems and leaves.
References in periodicals archive ?
To determine whether exposure to the eyespot image on the welcome page affected subjects' emotional states, they were asked to respond to the following item: "A number of words and phrases that describe different feelings and emotions appear below.
Caption: CRISPR/Cas9 can genetically manipulate butterflies; cutting a gene called Distal-less causes more eyespots (right) than appear on a normal wing (left).
Eyespots are light-sensitive patches that allow simple organisms, such as jellyfish and some other algae, to sense their environments.
Genetic control of Resistance to the sterol 14a-Demethylase inhibitor fungicide prochloraz in the cereal eyespot pathogen Tapesia yallundae.
Regarding wing pattern the genera Mesosemia, Semomesia, Mesophthalma and Terathophtalma are similar having an eyespot placed immediately in the forewing discal cell apex with several narrow bands on the dorsal wings surface common in Mesosemia and Semomesia, but in the enigmatic Eunogyra all of these are absent.
If data were not being exchanged between the eyespot and the flagellum, then there would be no movement toward sunlight; in turn, there would be no photosynthesis, and then no food storage.
According to this divergence model, one or a few ancestral "eye genes," for example the regulatory gene Pax6, evolved in the ancestral bilateria, resulting in the first eyespot.
Near the tail, they often have an eyespot, creating the impression of a head with antennae.
Eyespot was reported in 53pc of winter wheat and take-all was reported in 41pc of crops.
Phylum 3 Eustigmatophyta (Green Eyespot Mastigote Algae)
We are interested in the potential for evolutionary change of butterfly wing patterns and, more specifically, in morphological variation of the eyespot patterns of the nymphalid butterfly, Bicyclus anynana (Brakefield and French 1993; Monteiro et al.