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Topic: Thigmonasty

	Carnivorous plant - Wikipedia, the free encyclopedia
		In the Venus flytrap, spurious closure (in response to raindrops and blown-in debris) is prevented by the leaf's having a simple memory: for the lobes to shut, two stimuli are required, between one half and 30 seconds apart.
		The snapping of the leaves is a case of thigmonasty (undirected movement in response to touch).
		Further stimulation of the lobe's internal surfaces by the struggling insects causes the lobes to grow together (towards the prey: thigmotropism), sealing the lobes hermetically, and forming a stomach in which digestion occurs over a period of one to two weeks.
	en.wikipedia.org /wiki/Carnivorous_plant (6156 words)

	Question 18.1 (Site not responding. Last check: 2007-11-05)
		Thigmotropism involves a growth or increase in size while thigmonasty involves a shrinking in response to touch.
		Thigmotropism is a good response while thigmonasty is a bad or 'nasty' response to touch.
		Thigmotropism involves movement away from or towards a touch stimulus while thigmonasty is a non directional response to touch.
	www.mta.ca /~rthompso/Hopkins2/Chapt18H/quest18,1.html (94 words)

	taxol
		Only a single leaflet needs to be stimulated in order for the response to occur.
		Thigmonasty can be observed with the leaves of the sensitive plant, Mimosa pudica, and the Venus flytrap.
		Plants are also able to react to certain forms of stimulation by moving specific parts or by growing.
	www.botanical-online.com /colaborationstropism.htm (747 words)

	Tropisms and Nastic Movements History - Tropisms and Nastic Movements Information
		Gravity is not useful as a signal of changes in the environment because it is constant in presence and extent.
		The digestion of the prey in traps is important to the plant because it provides a source of combined nitrogen for protein synthesis.
		In an example of thigmonasty, the leaves of the mimosa fold up when they are touched by an animal, perhaps to discourage the animal from eating it.
	www.bookrags.com /sciences/biology/tropisms-and-nastic-movements-plsc-04.html (3208 words)

	Carnivorous plant \| TutorGig.co.uk Encyclopedia (Site not responding. Last check: 2007-11-05)
		In the Venus flytrap, spurious closure (in response to raindrops and blown-in debris) is prevented by the leaf having a simple memory: for the lobes to shut, two stimulations are required, roughly between one half and 30 seconds apart.
		The snapping of the leaves is a case of thigmonasty.
		Further stimulation of the lobe's internal surfaces by the struggling insects causes the lobes to grow together, sealing the lobes hermetically, and forming a stomach in which digestion occurs over a period of one to two weeks.
	www.tutorgig.co.uk /ed/Carnivorous_plant (3157 words)

	Mimosa leaf (Site not responding. Last check: 2007-11-05)
		The leaves of Mimosa have the capability to display thigmonasty (touch-induced movement).
		In the sensitive plant, the leaves respond to being touched, shaken, heated or rapidly cooled.
		If the applied stimulus is great enough, the signal produced is strong enough that it can propagate further and faster and cause the rest of the leaf to fold in several places as can be seen in this other real-time movie of a stronger response.
	sunflower.bio.indiana.edu /~rhangart/plantmotion/movements/nastic/mimosa/mimosa.html (199 words)

	PLANTS
		Legumes turn their leaves in response to day/night conditions (photonasty).
		Mimosa, also known as the sensitive plant, has its leaves close up when touched (thigmonasty).
		Phototropism is the reaction of plants to light in which the plants bend toward the light.
	blue.utb.edu /biology/Oliva/notes_plants.htm (2167 words)

	Fragments From Floyd: Plants in Motion
		There is a prize to the first person who can define the word "thigmonasty" from the Plants in Motion link!
		Now that you know it, use it in a sentence at least once today.
		Posted by: fredf at November 29, 2003 06:48 AM Thigmonasty is touch induced movement.
	www.fragmentsfromfloyd.com /archives/001681.html (452 words)

	Denison’s Curricular Uses of Technology, BIOLOGY
		However, time-lapse photography provides us with a new view of how a plant interacts with its environment through what some might call behavior.
		Examples of such behaviors include nyctinasty (sleep movements), thigmonasty (response to touch), nutation (spiraling motion), and phototropism (movement towardsor away from light).
		These phenomena are the subjects of this lab project.
	www.denison.edu /computing/facstaff/examples/biology.html (243 words)

	agron435 lecture 4 (Site not responding. Last check: 2007-11-05)
		Understand the role of light in seedling emergence.
		Understand the mechanism and importance of nictonasty, hydronasty, thigmonasty and thigmomorphogenesis.
		Clicking on the highlighted word(s) in each sentence will direct you to the appropriate study guide.
	www.uwrf.edu /~dc01/growdev.html (160 words)

	Botany online: Growth Movements - Seismonasty
		Reactions caused by touching are generally referred to as
		Without doubt has seismonasty to be regarded as a special case of thigmonasty that is characterized by an especially fast conversion of the stimulus.
		When single pinnate leaflets of the Mimosa vibrate or are touched, do they fold up in pairs.
	www.biologie.uni-hamburg.de /b-online/e32/32d.htm (1142 words)

	Natchez Naturalist Newsletter:
		I've never seen anyone try to explain it.
		The technical name for such plant movement caused by touching is "thigmonasty," by the way.
		If you are interested in how our native bird populations are doing in the face of ongoing habitat destruction and pollution you may be interested in the homepage of the US government's North American Breeding Bird Survey at
	www.backyardnature.net /n/02/020616.htm (1873 words)

	Re: I would like to know if plants have feelings, senses?
		Re: I would like to know if plants have feelings, senses?
		Plants can sense light (phototropism, photomorphogenesis, photoperiodism) and gravity (gravitropism) and some can respond to touch (thigmotropism, thigmonasty) (Salisbury and Ross, 1985).
		As far as botanists have determined, plants do not have feelings, do not grow better when exposed to certain types of music, and cannot communicate with humans as claimed in the bestselling book "The Secret Life of Plants." Those claims have been debunked by real botanists (Hershey, 1995).
	www.madsci.org /posts/archives/2000-02/949413731.Bt.r.html (300 words)

	Plants in Motion (Site not responding. Last check: 2007-11-05)
		The site provides an engaging and fun way for students to learn about these normally unseen movements, though biology instructors and plant scientists will also want to visit this interesting and well designed site.
		Arabidopsis thaliana; circadian rhythms; germination; gravitropism; nastic movements; nutation; photomorphogenesis; phototropism; plant growth; thigmonasty; time-lapse photography; tropic movements
		Rights and restrictions set forth in License Agreement
	esearchpub.isiport.com /cwc/WC01202005/WC01192005_4312.htm (116 words)

	Student Resources
		ISOLATION, PURIFICATION, AND CHARACTERIZATION OF LEAF MOVEMENT FACTORS IN SESBANIA EMERUS
		Sesbania emerus, a common Central Florida plant, exhibits sun-tracking leaf movements (diaheliotropism), slight ãtouch sensitivityä (thigmonasty), and night sleep movements (nyctinasty).The aqueous extract of 6.3 kg of plant leaves was partially purified by methanol precipitation, 1-butanol extraction, and then chromatography on gel permeation (BioGelP-2) and adsorption (Silica Gel 60) columns.
		Biological and electrical assays showed that the isolates initiate both a thigmonastic response and changes in membrane potential in Mimosa pudica.
	www.rollins.edu /chemistry/senior_research.shtml (2069 words)

	Can You Hear Me Now?: A tip from your Uncle Clarence
		The rest of his challenge was more difficult.
		One time when I had a Dobson Fly land on the back of my neck while running a trotline at night, I suffered a "Thigmonasty." How's that Fred?
		Listed below are links to weblogs that reference A tip from your Uncle Clarence:
	canyouhearmenow.typepad.com /index/2003/11/a_tip_from_your.html (654 words)

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