Loss of Rubidium and Potassium from Barley Roots on Sudden Chilling
نویسندگان
چکیده
منابع مشابه
An Anomaly in Potassium Accumulation by Barley Roots: II. Effect of Calcium Concentration and Rubidium-86 Labeling.
When excised barley roots were incubated in 0.01 to 0.1 mm KCl solutions containing 0.2 mm CaSO(4), there was a peak in the K(+) accumulation against concentration curve at 0.02 to 0.04 mm KCl. The peak in the K(+) accumulation curve was shifted to lower K(+) concentrations when Ca(2+) concentration was decreased and to higher K(+) concentrations when Ca(2+) concentration was increased. Increas...
متن کاملResolution of Dual Mechanisms of Potassium Absorption by Barley Roots.
As long as ZiveqI << 1/4, the equilibrium remains close to the "valley state." According to equations (16) and (21), this requires fairly low temperatures (,A >> 1). Specifically, in experiments on persistent currents where v (the magnetic flux quantum number) is often a very large number (-.105, say), the condition is T > 1,8 may be written in the form of an expan...
متن کاملThe regulation of potassium absorption in barley roots.
The dynamics of changes in K(+) influx across the plasmalemma and of internal K(+) concentrations [K(+)](1) of intact barley (Hordeum vulgare) roots were examined as the roots were converted from ;high-salt' to ;low-salt' roots. Following the transfer of plants grown in 0.5 mm CaSO(4) solutions plus various concentrations of KCl to 0.5 mm CaSO(4) solutions, influx rates increased and internal K...
متن کاملRegulation and mechanism of potassium release from barley roots: an in planta 42K+ analysis.
Potassium (K(+) ) flux into plant cells is a well-characterized ion transport phenomenon. By contrast, little is known about the mechanisms and regulation of K(+) flux from the cell. Here, we present a radioisotopic analysis of K(+) fluxes from roots of intact barley (Hordeum vulgare), in the context of recent discoveries in the molecular biology and electrophysiology of this process. Plants we...
متن کاملThe Effect of pH and Temperature on the Absorption Of Potassium and Bromide by Barley Roots.
and interpretation. Agr. Expt. Sta., Univ. of Maryland, Tech. Bull. A-80. 1954. 3. QUASTLER, H. and BAER, M. Inhibition of plant growth by irradiation. II. Sensitivity and development. Jour. Cellular Comp. Physiol. 33: 349363. 1949. 4. QUASTLER, H. and BAER, M. Inhibition of plant growth by irradiation. V. Radiation effects on initiation and completion of growth. Cancer Research 10: 604-612. 19...
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: Plant Physiology
سال: 1979
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.64.4.581