Enlargement in Chara Studied with a Turgor Clamp
نویسندگان
چکیده
منابع مشابه
Determination of Solute Permeability in Chara Internodes by a Turgor Minimum Method : Effects of External pH.
The analysis of Sha'afi et al. (Sha'afi, Rich, Mickulecky, Solomon 1970 J Gen Physiol 55: 427-450) for determining solute permeability in red blood cells has been modified and applied to turgid plant cells. Following the addition of permeating solute to the external medium, a biphasic response of cell turgor can be measured with the pressure probe in isolated internodes of Chara corallina. Afte...
متن کاملRegulation of cell division and cell enlargement by turgor pressure.
Isolated radish (Raphanus sativus L., var. Red Prince) cotyledons were incubated in growth medium plus graded concentrations of mannitol (-1 to -16 bars) for 28 hours. At the end of the incubation period, turgor pressures were measured using thermocouple psychrometers. Cell division, as measured by DNA increase, was greatly stimulated by increasing turgor from 5 to 6 bars. Cell enlargement was ...
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An apparatus is described by means of which the power versus frequency spectrum of the photomultiplier current can be obtained for laser light scattered by streaming cytoplasm in the algal cell Chara corallina. A Doppler peak is noted in the spectrum which is abolished when cytoplasmic streaming is arrested by electrical stimulation. For 5 cells of Chara, this simple laser-Doppler velocimeter g...
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Rapid changes in turgor pressure (P:) and temperature (T:) are giving new information about the mechanisms of plant growth. In the present work, single internode cells of the large-celled alga Chara corallina were used as a model for plant growth. P was changed without altering the chemical environment of the wall while observing growth without elastic changes. When P: was measured before any c...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1992
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.100.4.2071