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nastic movement
The Columbia Encyclopedia, Sixth Edition
nastic movement in botany, the movement of plant parts in response either to certain external stimuli or to internal growth stimuli. Nastic movements, which are generally slow, can be observed by time-lapse photography. Such movements as those of developing buds, which swell, open up, and eventually fall off, are examples of internally directed, or autonomic, nastic movements. The opening and closing movements of many flowers, and the responses of leaves to changes of temperature and light, are externally directed, or paratonic, nastic movements. Specialized plants, such as the insectivorous...
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Tropisms and Nastic Movements
Biology
Tropisms and
Nastic
Movements
Tropisms are growth responses of ... the stem toward the light source.
Nastic
movements
are rapid
movements
of plant organs ... collapse of adjacent cells. Because
nastic
movements
occur so rapidly, the
movement
...
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tropism
The Columbia Encyclopedia, Sixth Edition
... applied to growth and turgor
movements
in plants; an involuntary ... commonly called a taxic
movement
, or taxis —e.g., the ... to a stimulus are called
nastic
movements
, or nasties. These include ... of flower petals, growth
movements
that occur in response to ... amount of light. Turgor ...
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"nastic movement" on Wikipedia
Related newspaper, magazine, and journal articles from HighBeam Research
Shape-changing materials based on biological systems.(MATERIALS SCIENCE/R & D)
Advanced Materials & Processes; 5/1/2005; 171 words
; ... The materials are hard polymers called
nastic
materials, in which
nastic
refers to the natural
movement
of plants in response to changes in their ... sunlight or that stiffen when watered. These
movements
are caused by changes in the water pressure ...
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The Roles of Ethylene, Auxin, Abscisic Acid, and Gibberellin in the Hyponastic Growth of Submerged Rumex palustris Petioles1
Plant Physiology; 10/1/2004; Cox, Marjolein C H; Benschop, Joris J; Vreeburg, Robert A M; Wagemaker, Cornelis A M; Et al; 787 words
; Rumex palustris responds to complete submergence with upward
movement
of the younger petioles. This so-called hyponastic response ... environmental factors are widespread in the plant kingdom. These
nastic
responses (Palmer, 1985) can be divided into epinastic ... One of the environmental factors inducing hyponastic ...
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NPH4, a conditional modulator of auxin-dependent differential growth responses in Arabidopsis
Plant Physiology; 12/1/1998; Stowe-Evans, Emily L; Harper, Renee M; Motchoulski, Andrei V; Liscum, Emmanuel; 787 words
; ... responses" have been classically defined by the bending or
movement
of an organ resulting from unequal cellular growth in one ... include tropisms, modification of apical hook structures, and
nastic
movements
of leaves (for reviews, see Darwin and Darwin, 1896; Firn ...
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FERTILE MIND Flowering vines add color to trellises
Columbia Daily Tribune; 9/2/2007; JAN WIESE-FALES; 648 words
; ... stems are pushed in widening spiral motions by cell growth in varying positions across the stem tip. It is called
nastic
movement
and is controlled by plant hormones. Last summer, I planted purple hyacinth bean on the trellis, a bold and beautiful ...
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