Kinetics and osmoregulation of cotton (Gossypium hirsutum L.) fiber growth (primarily extension) have been studied. Growth is dependent on turgor pressure in the fiber. It is inhibited when a decrease in the water potential of the culture medium due to an addition of Carbowax 6000, equals the turgor pressure of the fiber. Potassium and malate accumulate in the fiber and reach peak levels when t...

1. BARTLEY, WV. and DAVIEs, R. E. Active transport of ions by subcellular particles. Biochem. Jour. 57: 37-49. 1954. 2. BULEN, W. A., VARNER, J. E. and BURRELL, R. C. Separation of organic acids from plant tissues. Anal. Chem. 24: 187-190. 1952. 3. GRAHAM, J. S. D. and YOUNG, L. C. T. Fixation of carbon dioxide in particulate preparations from barley roots. Plant Physiol. 34: 520-526. 1959. 4. ...

The birefringence of fresh and fixed mouse pancreatic acinar tissue was studied, utilizing whole mounts of pancreas from which the mesentery had been removed. Fresh pancreas in Tyrode's solution demonstrated positive birefringence with respect to the radial axis (the axis radiating from the nucleus as spokes from a wheel). Formol fixation reversed the sign of birefringence to negative with resp...

1. BARTLEY, WV. and DAVIEs, R. E. Active transport of ions by subcellular particles. Biochem. Jour. 57: 37-49. 1954. 2. BULEN, W. A., VARNER, J. E. and BURRELL, R. C. Separation of organic acids from plant tissues. Anal. Chem. 24: 187-190. 1952. 3. GRAHAM, J. S. D. and YOUNG, L. C. T. Fixation of carbon dioxide in particulate preparations from barley roots. Plant Physiol. 34: 520-526. 1959. 4. ...

The density of sympathetic nerve terminals in human superficial temporal arteries from 5 cases at intra- and extracranial bypass surgery was examined with two histochemical methods, one with potassium permanganate fixation and the other with the new monoamine oxidase staining technique. By potassium permanganate fixation, small cored vesicles containing fibers of noradrenergic nerve terminals m...

The objective of this study was to evaluate the effects potassium extraction on pozzolanicity sugar cane bagasse ash (SCBA), with aim producing reactive for use in cementitious composites. ashes were produced at 600 °C 60 min, a heating rate 4 °C/min. then ground and washed extraction. In order assess behaviour before after extraction, following procedures performed: energy-dispersive spectrosc...

Rising levels of atmospheric CO2 are thought to increase C sinks in terrestrial ecosystems. The potential of these sinks to mitigate CO2 emissions, however, may be constrained by nutrients. By using metaanalysis, we found that elevated CO2 only causes accumulation of soil C when N is added at rates well above typical atmospheric N inputs. Similarly, elevated CO2 only enhances N2 fixation, the m...

Potassium (K) is one of the essential macronutrients required for plants and its availability to hampered due fixation with other ions. The Releasing Micro-organisms (KRMs) present in soil are capable converting fixed form potassium into an available K uptake. Most commonly potash releasing bacteria rhizosphere belong phylum Firmicutes, Proteobacteria Actinobacteria. These microbes produce orga...