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The genome of the vining fern <i>Lygodium microphyllum</i> highlights genomic and functional differences between life phases of an invasive plant. [PDF]
Proc Natl Acad Sci U S APelosi JA +10 more
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Circumnutation on the water surface: female flowers of Vallisneria
Circumnutation on the water surface: female flowers of Vallisneriaopenaire +1 more source
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Circumnutation: From Plants to Robots
Lecture Notes in Computer Science, 2016We discuss and demonstrate how an approach used by plants can be adapted as a useful algorithm for motion planning in robotics. Specifically, we review the process of circumnutation, which is used by numerous plants, and particularly climbing vines, to explore and contact their environments.
Ian D. Walker
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Circumnutation Observed Without a Significant Gravitational Force in Spaceflight
Science, 1984For over half a century and especially since the 1960's a number of plant physiologists, seeking to explain the impressively ubiquitous mechanism that drives and regulates circumnutation in all growing plant organs, have been unable to agree on whether the differential growth process that leads to circumnutational oscillations is gravity dependent ...
D K Chapman, David K Chapman, A H Brown
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Circumnutations of Arabidopsis thaliana Seedlings
Biological Rhythm Research, 1997The hypocotyls of Arabidopsis thaliana seedlings exhibit circumnutations with different frequency ranges. Using a picture-analysis system, two types of oscillations were distinguished, short period (SPN) and long period nutations (LPN). The period of the SPNs is between 20 and 60 min, decreases with increasing temperature (between 20° and 30°C; Q 10 of
J Schuster, W Engelmann
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Gravity Perception and Circumnutation in Plants
Advances in Space Biology and Medicine, 1991Publisher Summary This chapter covers aspects that are especially germane for understanding the mechanism of circumnutations. Circumnutation, the ubiquitous pattern of oscillating growth displaced by all elongating plant organs, has been studied for over a century.
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Circumnutation and distribution of phytohormones in Vigna angularis epicotyls
Journal of Plant Research, 2017Circumnutation is a plant growth movement in which the tips of axial organs draw a circular orbit. Although it has been studied since the nineteenth century, its mechanism and significance are still unclear. Greened adzuki bean (Vigna angularis) epicotyls exhibited a clockwise circumnutation in the top view with a constant period of 60 min under ...
Motoyuki, Iida +4 more
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Circumnutation augmented in clinostatted plants by a tactile stimulus
Advances in Space Research, 1981Dark-grown, 4-day old, Helianthus annuus seedlings were rotated for 20 hr on horizontal clinostats to minimize the amplitude of circumnutation. Then a Plexiglas sheet was placed gently against the tip of the cotyledons. By time-lapse video imaging (using intermittent IR illumination to which the plants were insensitive) movements of the clinostatted ...
D K, Chapman, A H, Brown
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Physiologia Plantarum, 2014
The physiological control and molecular mechanism of circumnutation (CN) has not yet been fully understood. To gain information on the CN mechanism, the relationship between the changes of electrical potential and movement in the circumnutating sunflower stem and effect of ion channels and proton pump inhibitors on CN parameters were evaluated.
Kurenda, A. +2 more
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The physiological control and molecular mechanism of circumnutation (CN) has not yet been fully understood. To gain information on the CN mechanism, the relationship between the changes of electrical potential and movement in the circumnutating sunflower stem and effect of ion channels and proton pump inhibitors on CN parameters were evaluated.
Kurenda, A. +2 more
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Application of a Theory for Circumnutations to Geotropic Movements
Physiologia Plantarum, 1968AbstractFrom a previously published theory (Israelsson and Johnsson 1967) for circumnutations in Helianthus annuus it is possible to predict the geotropical curvatures of the hypocotyls. This extension of the theory is given in the present paper and some geotropical experiments are performed and discussed.The agreement between the theory and the ...
Anders Johnsson, Donald Israelsson
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