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254:, upward movement of water within the pulvinus joint in response to electrical stimulation was observed in the pulvinus at the base of the petiole (=the leaf stalk). Movement of water to the upper or lower part of the pulvinus causes asymmetric swelling, therefore causing the stalk to either droop or rise.
220:
A pulvinus is located at the base of each leaflet of the plant. Mechanical stimulation via touch is perceived and is translated to electrical stimulation causing the flow of ions out of the pulvinus cells. An upregulation of water channel proteins
243:. The drop in turgor pressure is reversible but slow. Leaves slowly open to their initial position after 20 minutes of lack of stimulation. It has been demonstrated that seismonastic movement can be inhibited with the use of
81:
or leaflet that facilitates growth-independent movement. Pulvinus is also a botanical term for the persistent peg-like bases of the leaves in the coniferous genera
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ions from the surrounding cells. This is followed by an efflux of water, resulting in a sudden change of turgor pressure in the cells of the pulvinus.
323:
Ueda, Minoru; Yamamura, Shosuke (9 April 1999). "Leaf-closing substance of Mimosa pudica L.; chemical studies on another leaf-movement of mimosa II".
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membrane of pulvini allow for the efflux of water that contributes to the change in turgor pressure. The process is similar to the mechanism of
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196:) movements appear to be regulated through electrical and chemical signal transduction spreading the stimulus throughout the plant.
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46:
251:
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Fleurat-Lessard, P.; Frangne, N.; Maeshima, M.; Ratajczak, R.; Bonnemain, J. L.; Martinoia, E. (1 July 1997).
460:"Increased Expression of Vacuolar Aquaporin and H+-ATPase Related to Motor Cell Function in Mimosa pudica L"
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213:, the internal biological clock mediates the closing of leaflets at night and opening during day. Rapid (
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pressure leading to a contraction or expansion of the parenchyma tissue. The response is initiated when
112:), where the leaf is attached, or in a compound leaf at the place where the leaflets are joined to its
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Volkov, Alexander G.; Foster, Justin C.; Baker, Kara D.; Markin, Vladislav S. (28 October 2014).
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Volkov, Alexander G.; Foster, Justin C.; Baker, Kara D.; Markin, Vladislav S. (1 October 2010).
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623:"Inhalational and local anaesthetics reduce tactile and thermal responses in mimosa pudica"
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results in a decrease in turgor pressure, and the characteristic closing of the leaves of
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Ahmad, Hafsa; Sehgal, Sakshi; Mishra, Anurag; Gupta, Rajiv (23 August 2012).
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Common examples for pulvinar movements include the night closure movement of
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Volkov, Alexander G; Foster, Justin C; Markin, Vladislav S (1 July 2010).
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227:) and membrane proteins which move solutes across a cell membrane (H+ -
217:) movement of leaves is triggered in response to touch and temperature.
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Heywood, V.H.; Brummitt, R.K.; Culham, A.; Seberg, O., O. (2007).
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147:. The increased sugar concentration in the apoplast decreases the
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667:"Mechanical and electrical anisotropy in Mimosa pudica pulvini"
721:, 7th Edition, W.H. Freeman and Company Publishers, New York,
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Milne, Avaleigh; Beamish, Travis (19 December 1998).
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leaves and the touch response of the sensitive plant
564:De Luccia, Thiago Paes de Barros (September 2012).
566:"Mimosa pudica, Dionaea muscipula and anesthetics"
411:"Molecular electronics in pinnae of Mimosa pudica"
517:"Mechanical and electrical anisotropy in pulvini"
120:within a flexible, bulky cylinder of thin-walled
717:P.H. Raven, R.F. Evert, S.E. Eichhorn (2005):
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658:
124:cells. A pulvinus is also sometimes called a
8:
360:"Mimosa pudica L. (Laajvanti): An overview"
131:Pulvinar movement is caused by changes in
128:(meaning a knee-like structure in Latin).
104:Pulvini may be present at the base of the
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77:-like thickening at the base of a plant
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188:and light signal transduction through
300:Flowering plant families of the world
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184:movements) are controlled by the
34:Section through the pulvinus of
47:The Power of Movement in Plants
671:Plant Signaling & Behavior
627:Canadian Journal of Anesthesia
570:Plant Signaling & Behavior
521:Plant Signaling & Behavior
415:Plant Signaling & Behavior
27:Swollen or thickened leaf base
1:
337:10.1016/s0040-4039(99)00342-1
116:. They consist of a core of
302:. New York: Firefly Books.
151:and triggers the efflux of
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252:nuclear magnetic resonance
235:and into its surrounding
377:10.4103/0973-7847.99945
683:10.4161/psb.5.10.12658
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427:10.4161/psb.5.7.11569
364:Pharmacognosy Reviews
139:is unloaded from the
108:or on its other end (
60:Jacaranda jasminoides
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476:10.1104/pp.114.3.827
180:. Sleep movements (
325:Tetrahedron Letters
640:10.1007/BF03012612
192:. Touch response (
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719:Biology of Plants
677:(10): 1211–1221.
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527:(10): 1211–1221.
331:(15): 2981–2984.
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37:Oxalis rosea
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190:phytochrome
182:nyctinastic
114:middle stem
99:Marantaceae
58:Pulvini of
736:Categories
281:2024-08-08
258:References
224:aquaporins
157:Aquaporins
122:parenchyma
106:leaf stalk
590:1559-2324
484:0032-0889
345:0040-4039
167:closure.
153:potassium
143:into the
126:geniculum
701:20855975
649:10210057
608:22899087
551:20855975
502:12223745
445:20448476
396:23055637
237:apoplast
233:symplast
165:stomatal
145:apoplast
95:Fabaceae
67:pulvinus
44:(1880):
40:, from:
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599:3489652
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272:"Picea"
161:vacuole
159:on the
137:sucrose
71:pulvini
18:Pulvini
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250:Using
229:ATPase
172:legume
141:phloem
133:turgor
90:Tsuga
84:Picea
75:joint
69:(pl.
723:ISBN
697:PMID
645:PMID
604:PMID
586:ISSN
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498:PMID
480:ISSN
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392:PMID
341:ISSN
304:ISBN
110:apex
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207:In
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