Results 21 to 30 of about 114 (104)
Frontiers in Plant Science, 2020 Asymmetric root growth (ARG) on tilted plates, or root coiling on horizontally placed plates, is proposed to be a combination of gravitropism, mechanical sensing, and “circumnutation,” a word designated by Charles Darwin to describe the helical movement ...
Sen Chai, En Li, Yan Zhang, Sha Li
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Circumnutations: From Darwin to Space Flights [PDF]
Plant Physiology, 1993 WHAT ARE CIRCUMNUTATIONS? More than a century ago, plant physiologists were aware that plant organs-roots, hypocotyls, shoots, branches, flower stalks-rarely grow in just one direction. The mean growth direction may be maintained for long intervals, but the organ's instantaneous growth direction usually oscillates slowly about that mean.
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Climber Diversity across Vegetational Landscape of North-Eastern Uttar Pradesh, India
Notulae Scientia Biologicae, 2016 The composition and diversity of climbers among grassland, wasteland and forest vegetations was examined with respect to their woodiness, climbing mode and circumnutation pattern across the vegetational landscape of north-eastern Uttar Pradesh during ...
Ashish DVIVEDI +2 more
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Circumnutation as a visible plant action and reaction [PDF]
Plant Signaling & Behavior, 2009 Circumnutation is a helical organ movement widespread among plants. It is variable due to a different magnitude of trajectory (amplitude) outlined by the organ tip, duration of one cycle (period), circular, elliptical, pendulum-like or irregular shape and clock- and counterclockwise direction of rotation. Some of those movement parameters are regulated
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Circadian Rhythm of Circumnutation in Inflorescence Stems of Arabidopsis [PDF]
Plant and Cell Physiology, 2005 We investigate the modulation of circumnutation in inflorescence stems of Arabidopsis to determine the circadian regulation of circumnutation. Under constant light conditions (LL), circumnutation speed in wild-type plants fluctuates, with the phase of the highest speed at subjective dawn; the period length is close to 24 h.
Kanae, Niinuma +4 more
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Frontiers in Plant SciencePlant roots are constantly prepared to adjust their growth trajectories to avoid unfavorable environments, and their ability to reorient is particularly crucial for survival.
Zeping Cai +8 more
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Effects of axial magnetic field on discharge characteristics of inductively coupled plasma
AIP Advances, 2020 To study the effects of an axial magnetic field on the discharge characteristics of Ar inductively coupled plasma, a set of discharge plasma generators was designed.
Shengwu Zhang +4 more
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Circumnutation on the water surface: female flowers of Vallisneria [PDF]
Scientific Reports, 2013 Circumnutation, the helical movement of growing organ tips, is ubiquitous in land plants. The mechanisms underlying circumnutation have been debated since Darwin's time. Experiments in space and mutant analyses have revealed that internal oscillatory (tropism-independent) movement and gravitropic response are involved in circumnutation.
Kosuge, Keiko +3 more
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Sense of space: Tactile sense for exploratory behavior of roots
Communicative & Integrative Biology, 2018 In soil, plant roots grow in heterogeneous environments. Plant roots are always facing the difficulty of searching effectively the patchy natural resources, such as water, oxygen, ions and mineral nutrition.
Ken Yokawa, František Baluška
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Very-High-Resolution Time-Lapse Photography for Plant and Ecosystems Research
Applications in Plant Sciences, 2013 Premise of the study: Traditional photography is a compromise between image detail and area covered. We report a new method for creating time-lapse sequences of very-high-resolution photographs to produce zoomable images that facilitate observation ...
Mary H. Nichols +4 more
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