Velocity Distribution of the Protoplasmic Streaming in Nitella Cells
نویسندگان
چکیده
منابع مشابه
Protoplasmic Streaming of an Internodal Cell of Nitella Flexilis
The sudden cessation or sudden decrease in velocity of the protoplasmic streaming of Nitella flexilis is observed whenever an action potential is elicited. The action potential can be generated by an electric stimulus after its refractory period, whether the flow is at a complete standstill or on the way to recovery. The membrane potential is generally decreased more or less when the rate of fl...
متن کاملEffect of Light on Sodium Influx, Membrane Potential, and Protoplasmic Streaming in Nitella.
The -,vay in which the various activities of a cell relate to the level of available energy can conveniently be studied in photosynthetic cells of size large enough to permit measurements on individual cells. Internodal cells of the Characeae approach ideality for such a purpose in that they are, to a good approximation, right circular cylinders of macroscopic dimensions. Moreover, a certain in...
متن کاملDiffusive Promotion by Velocity Gradient of Cytoplasmic Streaming (CPS) in Nitella Internodal Cells
Cytoplasmic streaming (CPS) is well known to assist the movement of nutrients, organelles and genetic material by transporting all of the cytoplasmic contents of a cell. CPS is generated by motility organelles that are driven by motor proteins near a membrane surface, where the CPS has been found to have a flat velocity profile in the flow field according to the sliding theory. There is a consi...
متن کاملThe Effect of Sudden Changes of Temperature on Protoplasmic Streaming
A sudden fall of temperature of 15 degrees to 20 degrees causes a complete cessation of the protoplasmic streaming in Nitella. The recovery of the normal rate follows a definite course and the time of recovery is dependent on the temperature. Evidence is adduced to show that the inhibition of streaming is due to a physical phenomenon.
متن کاملThe Effect of Auxins on Protoplasmic Streaming. Iii
1. A new method is described which gives a continuous record of the absolute rate of protoplasmic streaming in epidermal cells of the Avena coleoptile. 2. With this method a study was made of the influence of malate and iodoacetate on streaming velocity, in order to make correlations with the previously established effects of these substances on growth and respiration. 3. In the presence of opt...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Shokubutsugaku Zasshi
سال: 1956
ISSN: 0006-808X
DOI: 10.15281/jplantres1887.69.544