Results 21 to 30 of about 326 (136)

Circumnutation Tracker: novel software for investigation of circumnutation [PDF]

open access: yesPlant Methods, 2014
BACKGROUND: An endogenous, helical plant organ movement named circumnutation is ubiquitous in the plant kingdom. Plant shoots, stems, tendrils, leaves, and roots commonly circumnutate but their appearance is still poorly described. To support such investigations, novel software Circumnutation Tracker (CT) for spatial-temporal analysis of circumnutation
Maria Zofia Stolarz   +3 more
openaire   +2 more sources

Nutations in Plant Shoots: Endogenous and Exogenous Factors in the Presence of Mechanical Deformations

open access: yesFrontiers in Plant Science, 2021
We present a three-dimensional morphoelastic rod model capable to describe the morphogenesis of growing plant shoots driven by differential growth. We discuss the evolution laws for endogenous oscillators, straightening mechanisms, and reorientations to ...
Daniele Agostinelli   +3 more
doaj   +1 more source

A General 3D Model for Growth Dynamics of Sensory-Growth Systems: From Plants to Robotics

open access: yesFrontiers in Robotics and AI, 2020
In recent years, there has been a rise in interest in the development of self-growing robotics inspired by the moving-by-growing paradigm of plants.
Amir Porat   +4 more
doaj   +1 more source

Continuum Robots: An Overview

open access: yesAdvanced Intelligent Systems, 2023
Herein, recent advances, current limitations, and open challenges in the design, modeling, and control of continuum robots are discussed. Thanks to their lean bodies, these robots achieve a long reach through narrow and tortuous environments, enabling ...
Matteo Russo   +7 more
doaj   +1 more source

Glutamatergic elements in an excitability and circumnutation mechanism [PDF]

open access: yesPlant Signaling & Behavior, 2010
In plants, an electrical potential and circumnutation disturbances are a part of a response to environmental and internal stimuli. Precise relations between electrical potential changes and circumnutation mechanisms are unclear. We have found recently that glutamate (Glu) injection into Helianthus annuus stem induced a series of action potentials (APs)
Maria Zofia Stolarz   +2 more
openaire   +2 more sources

The Growth Oscillator and Plant Stomata: An Open and Shut Case

open access: yesPlants, 2023
Since Darwin’s “Power of Movement in Plants” the precise mechanism of oscillatory plant growth remains elusive. Hence the search continues for the hypothetical growth oscillator that regulates a huge range of growth phenomena ranging from circumnutation ...
Derek T. A. Lamport
doaj   +1 more source

Current understanding of the role of the cell wall in Cuscuta parasitism. [PDF]

open access: yesPlant Biol (Stuttg)
We comprehensively summarise the roles of plant cell wall in key processes of parasitism by the obligate stem parasite Cuscuta. Abstract The plant cell wall (CW) plays a crucial role in many aspects of parasitism by the obligate stem parasite, Cuscuta. Cuscuta parasitism begins with tight coiling around the host stem by the strong tensile force of the ...
Takagawa M, Yokoyama R.
europepmc   +2 more sources

Circumnutations of Sunflower Hypocotyls in Satellite Orbit [PDF]

open access: yesPlant Physiology, 1990
The principal objective of the research reported here was to determine whether a plant's periodic growth oscillations, called circumnutations, would persist in the absence of a significant gravitational or inertial force. The definitive experiment was made possible by access to the condition of protracted near weightlessness in an earth satellite ...
A H, Brown   +3 more
openaire   +2 more sources

Circumnutation as a visible plant action and reaction [PDF]

open access: yesPlant 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
openaire   +2 more sources

Osmotic and Salt Stresses Modulate Spontaneous and Glutamate-Induced Action Potentials and Distinguish between Growth and Circumnutation in Helianthus annuus Seedlings

open access: yesFrontiers in Plant Science, 2017
Action potentials (APs), i.e., long-distance electrical signals, and circumnutations (CN), i.e., endogenous plant organ movements, are shaped by ion fluxes and content in excitable and motor tissues.
Maria Stolarz, Halina Dziubinska
doaj   +1 more source

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