
	Where results make sense

Topic: Thigmotropism

Related Topics

Programmed cell death

In the News (Fri 18 Dec 09)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	Thigmotropism
		Thigmotropism, in particular, is a general term used to describe a plant's response to physical contact.
		There are two kinds of thigmotropism: positive thigmotropism, or the respose of a plant's stem up toward the touching object, and negative thigmotropism, or a root's response away from a touching object into the soil.
		Thigmotropism is the closest a plant comes to imitating a typical mammalian response to physical stimuli.
	va.essortment.com /thigmotropism_rdxr.htm (518 words)

	Early American Manual Therapy
		Thigmotropism, or response to touch, is illustrated by a vine twining around a string or twig; geotropism or response to gravity, by growing erect against gravity.
		Here a complicated set of tropisms is involved from thigmotropism, or response to touch when the insect lights on the leaf, to a chemotropism in the secreting of digestive juices.
		Thigmotropism, or the response of the cells to touch during the treatment is transmitted to other cells and changed to chemotropism, giving rise to the increase in the quantity of antitoxin produced, and these antibodies neutralize the toxin of the germ and the cure is effected.
	www.meridianinstitute.com /eamt/files/articles/artlawre.htm (1449 words)

	Thigmotropism - Wikipedia, the free encyclopedia
		Thigmotropism is a tropism in which an organism moves or grows in response to touch or contact stimuli.
		The prefix thigmo- comes from the Greek for "touch." Usually thigmotropism occurs when plants grow around a surface, such as a wall, pot, or trellis.
		Climbing plants, such as vines, contain tendrils that coil around supporting objects.
	en.wikipedia.org /wiki/Thigmotropism (113 words)

	Thigmotropism
		Thigmotropism is the directional response of a plant organ to touch or physical contact with a solid object.
		This interaction, or "cross-talk" between thigmotropism and gravitropism likely regulates the pathfinding of roots, but significant studies on the nature of this interaction have yet to be performed.
		In positive thigmotropism, for example, the side of the tendril which is opposite to the side of contact will grow at a faster rate than the contact side.
	biology.kenyon.edu /edwards/project/steffan/b45sv.htm (963 words)

	Home
		In thigmotropism, a plant responds to touch such as when a morning glory tendril wraps itself around a stake or when ivy grows along the side of a wall.
		It is assumed by most botanists that thigmotropism is caused by a combination of the hormones auxin and ethylene.
		Another type of environmental response that some plants exhibits is nastic movements, which differs from tropism in that the response it triggers is independent of the direction of the stimulus.
	www.pleasanton.k12.ca.us /avhsweb/thiel/creek/ap2002/Eugenie_Anna/literature_review_3.htm (531 words)

	Growth Substances
		The root cap is the region of the root which perceives the gravitational stimulus.
		Thigmotropism is a response to contact with a solid object.
		One of the most common examples of thigmotropism is seen in tendrils, which wrap around any object with which they come in contact.
	www.library.wisc.edu /libraries/Biology/BotanyDepartmentTeachingCollection/web-lessons/Physiology/External_factors.html (713 words)

	tropism - Hutchinson encyclopedia article about tropism (Site not responding. Last check: 2007-11-03)
		Geotropism for example, the response of plants to gravity, causes the root (positively geotropic) to grow downwards, and the stem (negatively geotropic) to grow upwards.
		Phototropism occurs in response to light, hydrotropism to water, chemotropism to a chemical stimulus, and thigmotropism, or haptotropism, to physical contact, as in the tendrils of climbing plants when they touch a support and then grow around it.
		Tropic movements are the result of greater rate of growth on one side of the plant organ than the other.
	encyclopedia.farlex.com /tropism (191 words)

	Country Sketches - Paintings and drawings reflecting the British countryside
		Thigmotropism, from the Greek root thigma, meaning "touch", and trope, meaning "turn", is the term used to describe a plant's response to physical contact.
		Since the response occurs in many more cells than have actually been touched we know that there must be detection of the signal, transduction of the signal into some sort of message, transfer of the message to the site of action, and then the action itself.
		Jasmonites are a by-product of one of the many chemical processes that go on in plant cells and it seems from this experiment that they can act as a message transfer agent.
	www.countrysketches.co.uk /nature_notes/climbing_in_plants.htm (2115 words)

	Tropisms (Site not responding. Last check: 2007-11-03)
		The three major classes of plant tropisms are: phototropism, gravitropism, and thigmotropism.
		Thigmotropism are growth responses of plants to touch.
		The tendrils of plants curl around and cling to stems or other objects and continue their growth upwards.
	stchs.org /science/courses/sbioa/photo/tropism.htm (283 words)

	The Mavens' Word of the Day
		"Thigmotropic" is a word that's supposed to mean "fond of pressure or contact," but I would like a more thorough definition, if possible.
		Thigmotropism is a biological term meaning 'oriented growth of an organism in response to mechanical contact, as a plant tendril coiling around a string support'.
		Thigmotropic seems to be pretty much restricted to science.
	www.randomhouse.com /wotd/index.pperl?date=19970723 (146 words)

	Re: How does a plant vine 'know' how to wrap around something?
		The process by which vines wrap around something for support is called "thigmotropism", growth stimulated by touch or contact.
		As in phototropism, where the growth is faster on the side away from the light, in thigmotropism, the growth is faster on the side away from the contact, thus causing the stem to bend in that direction (toward the contact).
		Not much work has been done on thigmotropism, but scientists are looking at these questions, and seem to be finding involvement of calcium ions and/or calmodulin (a protein found in many animal and plant systems which controls developmental processes) or derivatives of fatty acids inducing the response.
	www.madsci.org /posts/archives/mar99/921961330.Bt.r.html (452 words)

	VIPNET Science Club Network (Site not responding. Last check: 2007-11-03)
		Again at the instance of his illustrious uncle, he joined the thesis group at MSc stage that is doing MSc by submitting a thesis.
		Thigmotropism : Oriented growth of an aerial plant organ in response to localized physical contact is known as thigmotropism.
		For example, when a tendril of sweet pea touches a supporting structure, it bends or orients in the direction of the support and coils around it.
	www.vigyanprasar.com /vipnet/janfeb2002/jan&feb2002storyofelements.htm (1320 words)

	Int. J. Dev. Biol. - Plant tropisms: providing the power of movement to a sessile organism
		While the mechanics of tropic growth and subsequent development have been the topic of debate for more than a hundred years, only recently have researchers been able to make strides in understanding how plants perceive and respond to tropic stimulations, thanks in large part to mutant analysis and recent advances in genomics.
		This paper focuses on the recent advances in four of the best-understood tropic responses and how each affects plant growth and development: phototropism, gravitropism, thigmotropism and hydrotropism.
		While progress has been made in deciphering the events between tropic stimulation signal perception and each characteristic growth response, there are many areas that remain unclear, some of which will be discussed herein.
	www.ijdb.ehu.es /web/paper.php?doi=10.1387/ijdb.052028ce (260 words)

	Chapter 38: Control of Plant Growth and Responses (Site not responding. Last check: 2007-11-03)
		Thigmotropism is unequal growth due to touch (e.g., coiling of tendrils around a pole).
		Auxin stimulates growth of stem cells; cells of lower surface elongate and stem curves upward.
		Coiling of morning glory or pea tendrils around posts, etc. is a common example.
	www.sirinet.net /~jgjohnso/apbio38.html (2077 words)

	thigmotropism - alphaDictionary * Free English On-line Dictionary
		It is, however, related to phototropism "the ability to move in the direction of light", hydrotropism " root growth responses to water".
		Perhaps the most common plant exhibiting thigmotropism is the Venus flytrap, whose wing-like leaves close in on any insect that lights on them.
		Touching the leaf of a mimosa results in its curling up and if you touch the leaf of a prayer plant, it will fold together with its partner as hands are folded in prayer.
	www.alphadictionary.com /goodword/word/thigmotropism (336 words)

	Bio Essay on Phototropism, Gravitropism, and Thigmotropism Essay
		Essays Bio Essay on Phototropism, Gravitropism, and Thigmotropism
		Summary: The following presents a bio essay on phototropism, gravitropism, and thigmotropism.
		Three of the stimuli that encourage tropisms and a change in the plant's body shape are light (phototropism), gravity (gravitropism), and touch (thigmotropism).
	www.bookrags.com /essays/story/2004/5/10/221754/934 (190 words)

	thigmotropism - OneLook Dictionary Search
		Tip: Click on the first link on a line below to go directly to a page where "thigmotropism" is defined.
		thigmotropism : The American Heritage® Dictionary of the English Language [home, info]
		thigmotropism : Dorland's Illustrated Medical Dictionary [home, info]
	www.onelook.com /?w=thigmotropism (138 words)

	Biology - Environment - Light
		thigmotropism - tendrils positive, but most plant parts respond in some way (usually negative) to touch or mechanical stimulation)
		What is the basis of the response to the environmental factors of phototropism, gravitropism and thigmotropism?
		Perception of the signal (photo-receptors for light, starch grains for gravity) leads to localized build-up of hormones (auxin for light and gravity, ethylene for touch).
	www.hcs.ohio-state.edu /hort/biology/eligh.html (507 words)

	[No title]
		Auxin produced by developing seeds stimulates the development of the fruit.
		Auxin is involved in gravitropism, thigmotropism, and possibly heliotropism
		Thigmotropism - growth in response to a mechanical stimulus, such as a solid
	www.potomacstatecollege.edu /faculty/timturner/biol117ptcontrol.html (470 words)

	CONTROL OF PLANT GROWTH AND RESPONSE (Site not responding. Last check: 2007-11-03)
		a) phototropism b) gravitropism c) thigmotropism d) photoperiodism e) thermoregulation
		A researcher administers cytokinins to an experimental group of plants.
		The response by which tendrils curl around and cling to stems and other objects is an example of
	www.sirinet.net /~jgjohnso/apbio38quiz.html (1696 words)

	thigmotropism - English-French Dictionary - WordReference.com
		We found no French translation for 'thigmotropism' in our English to French Dictionary.
		Or did you want to translate 'thigmotropism' from French to English?
		Forum discussions with the word(s) 'thigmotropism' in the title:
	www.wordreference.com /enfr/thigmotropism (41 words)

	Thigmotropism (Site not responding. Last check: 2007-11-03)
		name Jim Patrick S. status student age 13 Question - What plants respond to thigmotropism?
		----------------- Plants with tendrils such as the sweet pea, grapes, etc. For more info: http://biology.kenyon.edu/edwards/project/steffan/b45sv.htm Anthony Brach Ph.D. Vining plants such as English Ivy and cucumber (not the bush variety) are positively thigmotropic, in other words they move toward the stimulus of touch.
		A plant that is negatively thigmotropic, ie moves away from touch, is Sensitive Plant or Mimosa.
	www.newton.dep.anl.gov /askasci/bot00/bot00439.htm (99 words)

Try your search on: Qwika (all wikis)