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Evidence that associated soil bacteria may influence root hair infection of actinorhizal plants by Frankia. 1980 Knowlton, S.
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Canadian journal of microbiology
Periodical, Abbrev.
Can.J.Microbiol.
Pub Date Free Form
/
Volume
26
Issue
8
Start Page
971
Other Pages
977
Notes
Place of Publication
ISSN/ISBN
0008-4166
Accession Number
Language
SubFile
DOI
Output Language
Unknown(0)
PMID
Abstract
Nodulation of actinorhizal plants (Alnus rubra Bong, and others) by isolated Frankia strains occurred either at a low frequency or not at all under axenic conditions. But nodulation was achieved under nonsterile conditions and four strains of bacteria were isolated which promoted nodulation when plants were inoculated with the bacteria plus Frankia. Four strains of Pseudomonas cepacia also promoted nodulation. Root hair deformation occurred when roots of A. rubra were inoculated with these bacterial isolates, or with the bacteria plus Frankia, but rarely or not at all when roots were inoculated with the actinomycete alone. The nonendophytic bacterial strains were not detected within the nodule tissue. It is proposed that the bacterial isolates aid in the infection process at the host root hair surface, by causing root hair deformation; this may allow intimate contact between the Frankia filament and the hair wall.
Descriptors
Actinomycetales, article, bacterial phenomena and functions, ecology, growth, development and aging, microbiology, physiology, plant, Pseudomonas, Rhizobium
Links
Book Title
Database
MEDLINE
Publisher
Data Source
Embase
Authors
Knowlton,S., Berry,A., Torrey,J. G.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
A survey of soil for determination of corrosion factors. On water pipe within Tehran area 1980
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Iranian Journal of Public Health
Periodical, Abbrev.
IRAN.J.PUBLIC HEALTH
Pub Date Free Form
1980/
Volume
9
Issue
4-Jan
Start Page
11
Other Pages
19
Notes
Place of Publication
ISSN/ISBN
Accession Number
Language
SubFile
DOI
Output Language
Unknown(0)
PMID
Abstract
Descriptors
Iran, methodology, nonbiological model, nonhuman, soil
Links
Book Title
Database
Embase
Publisher
Data Source
Embase
Authors
Razeghi,M., Behnoud,, Jamshidnia,
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
The Queensland cholera incident of 1977. 2. The epidemiological investigation 1980 Queensland Dept. Hlth, Brisbane 4000
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Bulletin of the World Health Organization
Periodical, Abbrev.
BULL.WHO
Pub Date Free Form
1980/
Volume
58
Issue
4
Start Page
665
Other Pages
669
Notes
Place of Publication
ISSN/ISBN
0042-9686
Accession Number
Language
SubFile
DOI
Output Language
Unknown(0)
PMID
Abstract
In 1977 the first case of cholera known to be contracted in Australia during the seventh pandemic occurred in southeastern Queensland. Toxigenic isolates of Vibrio cholerae, biotype eltor, serotype Inaba, phage-type 2, were obtained from the index case, a companion of the patient, the reticulated water supply of their place of residence, and a stretch of the neighbouring river that was being used to supplement fully treated water piped from Brisbane. Treatment of the auxiliary supply consisted solely of chlorination. A section of another river was later shown to contain V.cholerae. No source of pollution was identified for either river. From the persistence of the microorganism in the first river over a two-month period, despite increases in river flow following significant rainfall, it seems that the cholera vibrio can not only survive for a long period but can also grow in the river water. This strongly suggests that certain surface, and possibly subsurface, waters may serve as potential silent foci of V.cholerae. Hence the importance of providing bacteriologically safe water supplies, and the possible need to expand the definition of a 'cholera-receptive area'.
Descriptors
river water, article, Austria, ecology, epidemiology, etiology, geographic distribution, Vibrio cholerae, water pollution
Links
Book Title
Database
Embase; MEDLINE
Publisher
Data Source
Embase
Authors
Rogers,R. C., Cuffe,R. G. C. J., Cossins,Y. M.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
Effect of cadmium on the root and nodule ultrastructure of Alnus rubra 1980 Wickliff, Carlos, Environm. Prot. Agency, Terrestrial Syst. Div., Corvallis, Ore. 97330
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Environmental Pollution
Periodical, Abbrev.
Environ.Pollut.
Pub Date Free Form
1980/04
Volume
21
Issue
4
Start Page
287
Other Pages
306
Notes
Place of Publication
ISSN/ISBN
0269-7491
Accession Number
Language
SubFile
DOI
Output Language
Unknown(0)
PMID
Abstract
Albus rubra (Bong.) was grown for three months in a greenhouse and given 0, 6, 12, 31 and 62 μg cadmium/litre of nitrogen-free nutrient solution for 11 weeks. Segments of nodules and secondary roots were collected from plants grown at the different Cd levels. Thin sections were made for transmission electron microscopy and the ultrastructure of root and nodule cells was then investigated. Endophyte resorption advanced in the nodules and the number of starch grains in root xylem parenchyma cells tripled as the cadmium concentration increased from 12 to 62 μg/litre of nutrient solution. Nucleoli increased in prominence in the nuclei of the root xylem parenchyma cells as the cadmium concentration in the nutrient solution was raised from 12 to 62 μg/litre. Observations of root and nodule cell ultrastructure of Albus rubra suggest that cadmium exerts its toxic effect in roots and nodules by decreasing the number of endophyte structures capable of fixing nitrogen and reducing the rate of respiration and growth by host plant cells.
Descriptors
cadmium, animal experiment, vascular plant, plant, plant root
Links
Book Title
Database
Embase
Publisher
Data Source
Embase
Authors
Wickliff,C., Evans,H. J.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
Cadmium effects on the nitrogen fixation system of red alder 1980 Terrestrial Syst. Div., Corvallis Environ. Res. Lab., Off. Res. Dev., USEPA, Corvallis, Ore. 97330
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Journal of environmental quality
Periodical, Abbrev.
J.Environ.Qual.
Pub Date Free Form
1980/
Volume
9
Issue
2
Start Page
180
Other Pages
184
Notes
Place of Publication
ISSN/ISBN
0047-2425
Accession Number
Language
SubFile
DOI
Output Language
Unknown(0)
PMID
Abstract
Red alder (Alnus rubra Bong.) was grown in sand culture in the greenhouse to obtain data on the effects of cadmium (Cd) on a symbiotic nitrogen (N) fixation system which contributes to the fertility of forest soils. Treatment of red alder seedlings for 11 weeks with 0.545 to 136 μM CdCl2 in N-free nutrient solution decreased in situ nitrogenase activity 25 to 89%, N fixation 23 to 98%, and the number of nodules per plant 29 to 74%, when compared to plants receiving no Cd. Similar reductions were observed in plant growth. Treatment with 0.054 to 0.545 μM CdCl2, N fixation decreased 52 and 89%, respectively. Plant growth decreased 22 and 6 mM NH4NO3 or Ca(NO3)2, nitrate reductase activity decreased 22 and 24%, respectively, when compared to plants receiving no CdCl2. Nitrogen accretion and plant dry weights were decreased by treatments in which plants were supplied with Ca(NO3)2 and 0.273 and 0.545 μM CdCl2, when compared to controls without CdCl2. These results suggest that Cd can inhibit nitrogenase activity and therefore N fixation. Growth, nodulation, and nitrate reductase activity are also inhibited by Cd.
Descriptors
cadmium, cadmium chloride, nitrogen, nitrogenase, animal experiment, vascular plant, nitrogen balance, plant
Links
Book Title
Database
Embase
Publisher
Data Source
Embase
Authors
Wickliff,C., Evans,H. J., Carter,K. R., Russell,S. A.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
The pharmacological effect of fractions obtained by smoking cannabis through a water-pipe. II. A second fractionation step 1980 Dept. Biol. Chem., Med. Sch., Univ. Athens
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Experientia
Periodical, Abbrev.
Experientia
Pub Date Free Form
1980/
Volume
36
Issue
12
Start Page
1407
Other Pages
1408
Notes
Place of Publication
ISSN/ISBN
0014-4754
Accession Number
Language
SubFile
DOI
Output Language
Unknown(0)
PMID
Abstract
The catatonic activity, prolongation of phenobarbital sleeping-time, convulsant action and disruption of nest building activity were assessed in mice subjected to 4 cannabis pyrolysis products and their tobacco analogues. All but one of the cannabis fractions prolonged the pentobarbital sleeping-time and disrupted the nest-building activity of mice in a way not related to their content in the main cannabinoids. Nest-building activity seems to be the most valid assay we have used so far.
Descriptors
cannabinol derivative, cannabis, phenobarbital, phenytoin, placebo, tetrahydrocannabinol, animal experiment, behavior, catatonia, central nervous system, convulsion, drug screening, mouse, sleep time, epanutin
Links
Book Title
Database
Embase; MEDLINE
Publisher
Data Source
Embase
Authors
Lazaratou,H., Moschovakis,A., Armaganidis,A.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
Improvement of the state of municipal and industrial waste water pipes by active and passive corrosion prevention 1980 Bauakad. DDR, Inst. Ingenieur- und Tiefbau, Leipzig
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Wasserwirtschaft Wassertechnik
Periodical, Abbrev.
WASSERWIRTSCH.WASSERTECHN.
Pub Date Free Form
1980/
Volume
30
Issue
10
Start Page
345
Other Pages
348
Notes
Place of Publication
ISSN/ISBN
0043-0986
Accession Number
Language
SubFile
DOI
Output Language
Unknown(0)
PMID
Abstract
Descriptors
corrosion, industry, prevention, sewage treatment, therapy, waste water management
Links
Book Title
VERBESSERUNG DES ZUSTANDES KOMMUNALER UND INDUSTRIELLER ABWASSERNETZE DURCH AKTIVEN UND PASSIVEN KORROSIONSSCHUTZ
Database
Embase
Publisher
Data Source
Embase
Authors
Mueller,W., Greschuchna,R.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
The occurrence of salmonellae in drinking water 1979 Staatl. Mediz. Untersuch. Amt, Braunschweig
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Zentralblatt fur Bakteriologie.Hygiene.Krankenhaushygiene Betriebshygiene Praventive Medizin - Abt.1 Orig.B
Periodical, Abbrev.
ZENTRALBL.BAKT.HYG.KR.HYG.BETR.HYG.PRAV.MED.ABT.1 ORIG.B
Pub Date Free Form
1979/
Volume
169
Issue
6-May
Start Page
551
Other Pages
559
Notes
Place of Publication
ISSN/ISBN
Accession Number
Language
SubFile
DOI
Output Language
Unknown(0)
PMID
Abstract
A total of 7187 samples of drinking water from different areas of the Lower Saxonian District of Braunschweig was investigated during June 1977 and May 1979. The bacteriological results are given. Salmonellae were isolated in three samples of drinking water and in one sample of sludge from a municipal drinking water pipe. Additional experiments confirm that growth of salmonellae and other entereobacteria is possible in that sludge. These findings implicate some considerations: E. coli and coliforms are the most important microbial water quality indication. It is presupposed that, when the indicator density is low (less than 1 per 100 ml) the probability that pathogens are present also will be very low. But the question is how low? The risk factor may be estimated on the base of a E. coli-Salmonella ratio in raw sewage of about 106. But this ratio is already lessened in effluents of sewage treatment plants to 103 and often seems to be 102 in inadequately disinfected drinking water. For example, we have found four Salmonella and 408 E. coli serotypes over two years. Therefore, the judgement of the presence of E. coli or coliforms in samples of drinking water is important in this judgment of improvement of water quality by disinfection.
Descriptors
drinking water, geographic distribution, prevention, Salmonella, therapy
Links
Book Title
UBER DAS VORKOMMEN VON SALMONELLEN IM TRINKWASSER
Database
Embase; MEDLINE
Publisher
Data Source
Embase
Authors
Mueller,H. E.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
Relationship of blood lead in women and children to domestic water lead 1979 MRC Epidemiol. Unit, Cardiff
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Nature
Periodical, Abbrev.
Nature
Pub Date Free Form
1979/
Volume
282
Issue
5740
Start Page
712
Other Pages
713
Notes
Place of Publication
ISSN/ISBN
0028-0836
Accession Number
Language
SubFile
DOI
Output Language
Unknown(0)
PMID
Abstract
Humans can be exposed to lead through food, drink, various occupations or hobbies and also some cosmetics. The contribution of these different exposures to the total body uptake varies between individuals and groups but it is generally accepted that food and drink are the major sources of body lead. On average, lead from water contributes markedly less to total intake than does lead from food. It has been suggested, however, that when average lead in water rises above 0.1 mg I-1 the intake from water begins to match or exceed that from food. We have previously reported that the mean blood lead levels in mothers and children on a housing estate with lead water pipes were over twice as high as those on an adjacent estate using copper pipes. Here we report that the blood lead levels, even when raised, remained very stable when lead exposures were unchanged. The removal of the lead water pipes produced a drop of approximately 50% in mean blood lead levels, reducing them to levels comparable to those on the copper piped estate. No other changes in lead exposure could be found to explain the variations in blood lead levels between the estates, and therefore the possibility of the large contribution of water lead to blood lead should be considered where the conditions described below are known to occur.
Descriptors
drinking water, lead, blood, blood and hemopoietic system, drug blood level, human cell, normal human, school child
Links
Book Title
Database
Embase; MEDLINE
Publisher
Data Source
Embase
Authors
Thomas,H. F., Elwood,P. C., Welsby,E., St Leger,A. S.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
Original contributions. Electrical wiring configurations and childhood cancer 1979 Dept. Prev. Med., Univ. Colorado Med. Cent., Denver, Colo. 80262
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
American Journal of Epidemiology
Periodical, Abbrev.
Am.J.Epidemiol.
Pub Date Free Form
1979/
Volume
109
Issue
3
Start Page
273
Other Pages
284
Notes
Place of Publication
ISSN/ISBN
0002-9262
Accession Number
Language
SubFile
DOI
Output Language
Unknown(0)
PMID
Abstract
An excess of electrical wiring configurations suggestive of high current-flow was noted in Colorado in 1976-1977 near the homes of children who developed cancer, as compared to the homes of control children. The finding was strongest for children who had spent their entire lives at the same address, and it appeared to be dose-related. It did not seem to be an artifact of neighborhood, street congestion, social class, or family structure. The reason for the correlation is uncertain; possible effects of current in the water pipes or of AC magnetic fields are suggested.
Descriptors
neoplasm, childhood, electricity, electromagnetic field, etiology, geographic distribution, leukemia, nonbiological model, preschool child, school child, short survey
Links
Book Title
Database
Embase; MEDLINE
Publisher
Data Source
Embase
Authors
Wertheimer,N., Leeper,E.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors