ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Loss of aerobic nitrogen fixation associated with kasugamycin resistance in the heterocystous nitrogen-fixing, streptomycin resistant blue-green alga Nostoc muscorum (1983)
    Springer
    Plant cell reports 2 (1983), S. 310-313 
    Details
    ISSN: 1432-203X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Heterocystous N2-fixing, Streptomycin resistant (Het +Nif+Str-R) Nostoc muscorum produces two groups of Kasugamycin resistant (Kas-R) phenotypes: one group showing normal heterocyst frequency and normal aerobic growth with N2 as a nitrogen source, the other group showing loss of growth with N2 as nitrogen source under aerobic growth conditions. Examination of strains showing Kas-R associated loss of aerobic N2 growth shows them to comprise three classes: Class A showing loss of both heterocyst and nitrogenase activity, class B showing formation of heterocyst but no nitrogenase activity and class C lacking heterocyst but containing microaerobic nitrogenase activity. The three classes of mutants revert to aerobic prototrophy with almost similar frequency of about 10−6 suggesting them to have arisen as a result of single mutational events. Their reversion to prototrophy is simultaneously accompanied by the loss of Kas-R phenotype. All the phenotypic revertants in general appear more or less similar to the parental strain in respect to heterocyst formation, aerobic N2 growth and Kasugamycin sensitivity (Kas-S).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00270189
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Growth of Sodium Dodecyl Sulfate Micelles in the Presence of n-Octylamine (1994)
    s.l. : American Chemical Society
    Langmuir 10 (1994), S. 4069-4072 
    Details
    ISSN: 1520-5827
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/la00023a027
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Micelle-enhanced chemiluminescence and application to the determination of biological reductants using lucigenin (1984)
    s.l. : American Chemical Society
    Analytical chemistry 56 (1984), S. 2180-2191 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac00276a046
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Genetic control of heterocyst formation in the blue-Green algae Nostoc muscorum and nostoc linckia (1977)
    Springer
    Archives of microbiology 114 (1977), S. 155-159 
    Details
    ISSN: 1432-072X
    Keywords: Blue-green algae ; Nostoc ; Mutants ; Heterocyst and nitrogenase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Non-heterocystous, non-nitrogenfixing (het - nif-), heterocystous, non-nitrogenfixing (het + nif-) and multiple heterocystous, nitrogen-fixing (M-het + nif+) mutants of heterocystous, nitrogen-fixing (het + nif+) wild-type Nostoc muscorum and Nostoc linckia were isolated and characterized with respect to (a) nitrogenfixing activity, (b) reversion frequency, (c) ammonium repressibility of heterocyst formation, (d) heterocyst spacing pattern, and (e) action of L-methionine-DL-sulphoximine (MSO), an inhibitor of glutamine synthetase (GS), on heterocyst regulation. The mutant and revertant results suggest: (i) either involvement of a common genetic determinant in the formation of heterocyst and nitrogenase or the organization of het genes and nif genes in a single operon prone to complete inactivation by a single polar mutation, (ii) non-participation of active nitrogenase in regulation of heterocyst spacing; (iii) involvement of genetic factor(s) in the control of heterocyst spacing pattern in N. linckia, and (iv) apparently different nature of the mechanism of heterocyst inhibition by proheterocyst from that of heterocyst inhibition by NO 3 - or NH 4 + . L-Methionine-DL-sulphoximine inhibits growth and causes heterocyst formation in chains in N. linckia growing in nitrogen-free, NO 3 - , NO 2 - or NH 4 + medium, thus indicating a close physiological linkage between heterocyst and inorganic nitrogen metabolism regulation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00410777
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Ultra-violet induced mutants of blue-green algae (1964)
    Springer
    Archives of microbiology 48 (1964), S. 118-121 
    Details
    ISSN: 1432-072X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Two U.V. induced mutants of nitrogen-fixing Anabaena doliolum have been isolated: 1. 5M 16 — This strain characterised as glucose-requiring nitrogen-fixing mutant, does not grow photo-autotrophically in the basal medium but does so when supplemented with glucose. Its growth rate is rather slow on AA-1, AA-3 and AA-4 but it grows very fast on AA-2. 2. L Y-5M8/5M12 — This strain characterised on the basis of periodic occurrence of massive lytic property, characteristic of each supplemented medium, grows initially for some time and then the whole population undergoes lysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00408452
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Ultra-violet induced mutants of blue-green algae (1964)
    Springer
    Archives of microbiology 48 (1964), S. 109-117 
    Details
    ISSN: 1432-072X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Mutant strains of Anabaena cycadeae Reinke have been isolated after ultra-violet irradiation. All the four mutants described appear to be stable. They have been identified on the basis of their pigment composition, nutritional requirements, photoautotrophic growth and reaction to light. Strain 10 M 1 L is a non-nitrogen-fixing mutant as indicated by its inability to grow on basal medium (AA) deficient in combined nitrogen. Strain 10 M 1 L /10 M 1 D is apochlorotic, and grows very slowly on medium AA-3 both in light and dark but comparatively better under the latter condition. Strain 10 M 1 L /10 M 2 D is deficient in β-carotenoid, photosensitive and able to grow in dark only on AA-3 medium while strain 10 M 1 L /10 M 3 D is a photoheterotrophic nitrogen-fixer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00408451
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    An azide-resistant mutant of the blue-green algaNostoc muscorum producing heterocyst and nitrogenase in the presence of fixed inorganic nitrogen source (1978)
    Springer
    Archives of microbiology 119 (1978), S. 197-201 
    Details
    ISSN: 1432-072X
    Keywords: Blue-green alga ; Nostoc ; Azide-resistant mutant ; Heterocyst and Nitrogenase regulation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The N2, NO 3 − , NO 2 − , NH 4 + and glutamine growing cultures of parentNostoc muscorum are found more or less equally sensitive to azide inhibition of growth. A mutant strain resistant to sodium azide was isolated from the parent strain in NO 3 − medium and the two strains were compared with regard to their heterocyst formation and nitrogenase activity in NO 3 − , NO 2 − , NH 4 + and glutamine media. While the parent strain stops production of both heterocyst and nitrogenase in all the fixed nitrogen media, the azide resistant strain forms both in the fixed inorganic nitrogen media but only heterocyst and no nitrogenase in the glutamine medium. Clearly a single genetic determinant of regulatory nature appears to mediate azide-resistance as well as relief of heterocyst and nitrogenase formation from inhibition by the fixed inorganic nitrogen source. The results of glutamine effect on the heterocyst and nitrogenase formation of the two strains indicate the operation of two levels of glutamine-sensitive regulation, one which operates through the common genetic determinant of heterocyst and nitrogenase regulation and the other exclusive to nitrogenase regulation. The in vivo functional nitrogenase does not appear to be the reason for azide-resistance and neither ammonia nor glutamine or its close metabolic product seems to function in the control of heterocyst spacing.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00964273
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Genetic transformation of glutamine auxotrophy to prototrophy in the cyanobacterium Nostoc muscorum (1990)
    Springer
    Archives of microbiology 154 (1990), S. 414-416 
    Details
    ISSN: 1432-072X
    Keywords: Cyanobacterium ; Ammonium assimilation ; Glutamine auxotrophy ; Transformation ; MSX-resistance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Glutamine auxotrophic (Gln -) and l-methionine d,l-sulfoximine (MSX) resistant (MSX r) mutants of N. muscorum were isolated and characterized for nitrogen nutrition, nitrogenase activity, glutamine synthetase (GS) activity and glutamine amide, α-keto-glutarate amido transferase (GOGAT) activity. The glutamine auxotroph was found to the GOGAT-containing GS-defective, incapable of growth with N2 or NH 4 + but capable of growth with glutamine as nitrogen source, thus, suggesting GS to be the primary enzyme of both ammonia assimilation and glutamine formation in the cyanobacterium. The results of transformation and reversion studies suggests that glutamine auxotrophy is the result of a mutation in the gln A gene and that gln A gene can be transferred from one strain to another by transformation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00276541
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    The effect of caffeine and light on killing of the blue-green alga Anabaena doliolum by ultraviolet radiation (1971)
    Springer
    Archives of microbiology 78 (1971), S. 139-144 
    Details
    ISSN: 1432-072X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Pretreatment of spores of the blue-green alga Anabaena doliolum with caffeine is antagonistic to UV lethality and posttreatment with caffeine is synergistic to UV lethality and mutagenicity. The results of photoreactivation experiments suggest that photoreactivation is independent of photosynthesis in blue-green algae.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00424870
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Inorganic nitrogen regulation of glutamate uptake in the cyanobacterium Nostoc muscorum (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 82 (1991), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: In Nostoc muscorum (Anabaena ATCC 27893) glutamate was not metabolised as a fixed nitrogen source, rather it functioned as an inhibitor of growth. The latter effect was nitrogen source specific and occurred in N2-fixing cultures but not in cultures assimilating nitrate or ammonium. NO3--grown cultures lacked heterocysts and nitrogenase activity and showed a nearly 50% reduction in glutamate uptake rates, as well as in the final extent of glutamate taken up, compared to N2-fixing or nitrogen-limited control cultures. NH4+-grown cultures showed a similar response, except that the reduction in glutamate uptake rates and the final exten of glutamate taken up was over 80%. The present results suggest a relation between nitrate/ammounium nitrogen-dependent inhibition of glutamate uptake, probably via repression of the glutamate transport system, and glutamate toxicity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1991.tb00090.x
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...