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nyctinastic
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nyctinastic
nyctinastic, a. Bot. (nɪktɪˈnæstɪk) [a. G. nyctinastisch (W. Pfeffer Pflanzenphysiologie (ed. 2, 1904) II. xii. 476): see nycti- and nastic a.] Of the movements of flowers or leaves, caused by a regular cycle of changes in light and temperature. So nyctiˈnastism, ˈnyctinasty, movement of this kind. ...
Oxford English Dictionary
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Nyctinasty
Nyctinastic movements are associated with diurnal light and temperature changes and controlled by the circadian clock. This indicates nyctinastic movement may be beneficial toward plant growth.
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Pulvinus
Sleep movements (nyctinastic movements) are controlled by the circadian clock and light signal transduction through phytochrome.
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Anemonoides quinquefolia
The flower of A. quinquefolia is nyctinastic, that is, the flower closes at night (and on cloudy days) and opens during the day.
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Dendrosenecio keniensis
As well as the nyctinastic behavior of the leaf rosettes which open during the day and close tightly around the leaf bud and meristem when it becomes cold
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sleep
▪ I. sleep, n. (sliːp) Forms: α. 1 slæp, 1, 3–4 (6 Sc.) slep (3 sclep), 1, 4– sleep; 1, 3 dat. slæpe 3 dat., 6 sleape, 1–3 dat., 4–6 slepe (5 sclepe, sleppe), 5–7 sleepe; 6 Sc. sleip(e. β. 1, 3 slap, 2, 4 slape, 4 slope. [OE. slǽp (sláp), slép, = OFris. slêp (WFris. sliep, NFris. slîp), MDu. slaep (...
Oxford English Dictionary
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Mimosa nuttallii
Like a few other species of Mimosa (such as M. pudica), the leaves exhibit nyctinastic movement, folding up quickly when touched or disturbed.
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Dendrosenecio
Insulation of the stem by retaining withered and dead foliage
Secretion and impoundment of ice-nucleating polysaccharide fluids (a natural anti-freeze)
Nyctinastic
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Wilhelm Pfeffer
His scientific interests included the thermonastic and photonastic movements of flowers, the nyctinastic movements of leaves, protoplastic physics and
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Mimosa pudica
Like a number of other plant species, it undergoes changes in leaf orientation termed "sleep" or nyctinastic movement.
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Peanut
Like those of many other legumes, the leaves are nyctinastic; that is, they have "sleep" movements, closing at night.
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Learning
Circadian rhythms in plants are modulated by endogenous bioactive substances that encourage leaf-opening and leaf-closing and are the basis of nyctinastic
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