Some observations on the physiological effects of gaseous ions

Krueger, A. P.; Kotaka, S.; Andriese, Paul C.

doi:10.1007/bf02187011

Cited by 35 publications

(17 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It produces synthetic seismograms that agree within about 20% with the direct Swave pulses on both horizontal components at stations 3,5,6,7,8,11,Holtville,Melol:and, and Bonds Corner. The vertical component is matched almost as well as the hori-zontal components.…”

Section: Resultsmentioning

confidence: 86%

“…On May 7,8 events (largest magnitude~ 1.5) occurred in a 9-minute span near Blair, located 12 km NNW of the south shore of Monticello Reservoir. The events occurred between 07.31 and 07.40 UTC (3:31-3:40 AM local time) and awoke residents.…”

Section: Resultsmentioning

confidence: 99%

“…7 Age based on C-14 dates from correlative terraces along the lower Ventura River. 8 Based on two C-14 dates on charcoal collected at the base of the Oak View Terrace below Oliva .l. 9Age based upon relative amount of displacement on the Arroyo Parida fault.…”

mentioning

confidence: 99%

“…Relevant to the animal hypothesis are reports from a number of independent laboratories that a wide variety of animal species are acutely sensitive to levels of energies that characterize precursory phenomena (8)(9)(10)(11)(12)(13)(14). A report by Buskirk et al (14) summarized a recent USGS-supported conference that examined the laboratory findings of leading investigators, and the extant literature, on the sensitivity of reptiles, fish, birds, and selected mammals to physical stimuli known to precede at least some earthquakes.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Summaries of technical reports, Volume XV

Jacobson¹,

Rodriguez²,

Seiders³

1983

Open-File Report

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 86%

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Summaries of technical reports, Volume XV

Jacobson¹,

Rodriguez²,

Seiders³

1983

Open-File Report

View full text Add to dashboard Cite

“…During the past 8 years the authors have investigated the effect of gaseous ions on higher plants and have found that moderate concentrations of positive and negative ions markedly stimulate plant growth and increase oxygen consumption (2,3,6,7). They increase both the rates of shrinking and swelling of isolated chloroplasts and the utilization of ATP in the process (4).…”

mentioning

confidence: 99%

Some Observations on the Bleaching Effect of Ethylenediaminetetraacetic Acid on Green Barley Leaves

Kotaka

Krueger

1969

Plant Physiol.

Self Cite

View full text Add to dashboard Cite

Abstract. Green barley leaves (Hordeum vulgaris) floated on the surface of 0.05 Mi ethylenediamine disodium tetraacetate, EDTA-ZNa, pH 7.0 and exposed to light (5000 lux) at 250 exhibited a marked bleaching (EDTA-bleaching) visible to the naked eye and paralleled by a striking reduction in content of chlorophylls a and b. This loss of color did not occur in controls which were treated with H,O instead of EDTA (water controls). In darkness the leaves in the water controls were bleached while EDTA-treated leaves retained all their color.EDTA bleaching was observed only in intact leaves. When leaves were boiled EDTA protected their pigment against photodecomposition. Without EDTA boiled leaves were bleached completely in light.When intact green leaves which had been floated on water and exposed to light for 48 hr were treated with boiling ethanol or acetone, the chlorophylls extracted by this procedure did not undergo bleaching if EDTA were present in solution. Under these conditions a green fine grain precipitate formed which was insoluble in ethanol or acetone and was stable in light or darkness.EDTA bleaching of green barley leaveE was inhibited by KCN, and by the addition of casein hydrolysate.During the past 8 years the authors have investigated the effect of gaseous ions on higher plants and have found that moderate concentrations of positive and negative ions markedly stimulate plant growth and increase oxygen consumption (2, 3, 6, 7). They increase both the rates of shrinking and swelling of isolated chloroplasts and the utilization of ATP in the process (4). They enhance iron uptake and in plants suffering from iron chlorosis increase the "residual" iron pool (including cytochromes and other Fe-containing enzymes) while the "active" iron fraction of the tissues decreases and the chlorophvll content is diminished (2, /7). Active iron, contained in the chloroplasts, participates in the production of chlorophyll while residual iron is not associated with chloroplasts nor is it involved in the biosynthesis of chlorophyll (1, 8).In studying the effect of air ions on chlorophyll biosynthesis attempts have been made to use etiolated seedlings for the preparation of isolated chloroplast suspensions which had retained their ability to produce chlorophyll. Unfortunately such isolates bleach when exposed to light; even green chloroplasts become decolorized during light treatment for 72 hr. In our experience retention of the green color of chloroplasts is closelv linked to their retention of catalytic activitv. Therefore it seemed reasonable that if one knew how to prevent the bleaching of chloroplasts, he might hope to obtain etiolated chloroplast suspensions capable of synthesizing chlorophyll in the light. These considerations led us to study the mechanism of decolorization of isolated green chloroplasts in a defined medium.In preliminary experiments it was noted that EDTA, a component of the isolation and suspension medium, was responsible for the decolorization of green chloroplasts. It appeared to us that an ...

show abstract

Response of Animals to Heat

Johnson

1965

Agricultural Meteorology

View full text Add to dashboard Cite

Some observations on the physiological effects of gaseous ions

Cited by 35 publications

References 24 publications

Summaries of technical reports, Volume XV

Summaries of technical reports, Volume XV

Some Observations on the Bleaching Effect of Ethylenediaminetetraacetic Acid on Green Barley Leaves

Response of Animals to Heat

Contact Info

Product

Resources

About