On the Membrane of the Tannin Vacuole in the Mimosa Motor Cell

Toriyama, Hideo; Satô, Syôiti

doi:10.2183/pjab1945.44.528

Cited by 9 publications

(2 citation statements)

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“…There is no direct relationship between the presence of tannin vacuole and the oc currence of rapid movement, because no tannin vacuole is found in the motor cells of the very young plants in which the movement takes place normally (85). Recently Toriyama found a membrane structure surround ing the tannin vacuole (91).…”

Section: Mechanism Of Rapid Movementsmentioning

confidence: 99%

Physiology of Rapid Movements in Higher Plants

Sibaoka¹

1969

Annu. Rev. Plant. Physiol.

168

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Among the various behaviors in higher plants, a peculiar one, that a part of the leaf or flower in certain plants shows very rapid movement upon stimulus, has invited the attention of a number of investigators since the beginning of botanical research. However, in spite of this long history of study, numerous fundamental aspects of the phenomena remain to be clari fied. Since the definition of the rapid movement is still unclear, discussion in this review will be restricted to three types of the movements: (a) rapid response in the pulvini of the mimosas; (b) shutting movement in the traps of two carnivores, Dionaea and Aldrovanda (an aquatic plant); and (c) visible movements in the stamen and pistil of some plants upon stimulus. This review is not intended to be a comprehensive resume of all published works on the movements. I intend to restrict my discussion to a consider ation of various results in an attempt to discover a general mechanism un derlying these movements, and will stress the relation between electrical re sponse and the movement. Several reviews and monographs have been published that approach this problem from various points of view (18, 19, 24, 42, 101, 103), including the author's own works (11, 71). In this review I will return to some of the important older literature which provides a basis for understanding the mechanism. PERCEPTION OF STIMULUS AND RESPONSE BEHAVIOR Dionaea and Aldrovanda.-Features of perception of stimulus and the process of response in these two carnivorous plants (3) are essentially simi lar to each other, though their form, size, and habitat are quite different. Normally, six (three on each lobe) sensory hairs in Dionaea muscipula and 30 to 40 in Aldrovanda vesiculosa (3) are found on the upper surface of the trap-lobes. When a small animal touches the distal lever above the joint of a sensory hair, or when the lever is pushed slightly with a fi ne rod, the hair bends at the joint consisting of morphologically special cells. In Dionaea, the mechanical stimulus is received in the remaining part of the hair after removal of the distal lever (14). Deformation of the thin-walled joint cells in Aldrovanda by pinching with two fine glass rods results in shutting of thc trap (4). The special cells at the joint (42) seem therefore to be mechanical receptors, but in Dionaea no direct evidence for this conclusion has yet been obtained. In Dionaea, at moderate temperature a shutting of the trap usually fol lows two stimuli (22,27), disturbing either the same hair twice or two dif-165

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