Ability to use the diazo dye, C.I. Acid Black 1 as a nitrogen source by the marine cyanobacterium Oscillatoria curviceps BDU92191

2011 ◽  
Vol 102 (14) ◽  
pp. 7218-7223 ◽  
Author(s):  
Balakrishnan Priya ◽  
Lakshmanan Uma ◽  
Abdul Khaleel Ahamed ◽  
Gopalakrishnan Subramanian ◽  
Dharmar Prabaharan
Author(s):  
L. P. Hardie ◽  
D. L. Balkwill ◽  
S. E. Stevens

Agmenellum quadruplicatum is a unicellular, non-nitrogen-fixing, marine cyanobacterium (blue-green alga). The ultrastructure of this organism, when grown in the laboratory with all necessary nutrients, has been characterized thoroughly. In contrast, little is known of its ultrastructure in the specific nutrient-limiting conditions typical of its natural habitat. Iron is one of the nutrients likely to limit this organism in such natural environments. It is also of great importance metabolically, being required for both photosynthesis and assimilation of nitrate. The purpose of this study was to assess the effects (if any) of iron limitation on the ultrastructure of A. quadruplicatum. It was part of a broader endeavor to elucidate the ultrastructure of cyanobacteria in natural systemsActively growing cells were placed in a growth medium containing 1% of its usual iron. The cultures were then sampled periodically for 10 days and prepared for thin sectioning TEM to assess the effects of iron limitation.


1976 ◽  
Vol 42 (4) ◽  
pp. 993-1001 ◽  
Author(s):  
R. P. Kromann ◽  
T. R. Wilson ◽  
G. S. Cantwell

1958 ◽  
Vol 50 (3) ◽  
pp. 172-173 ◽  
Author(s):  
Glenn W. Burton ◽  
James E. Jackson ◽  
B. L. Southwell

jpa ◽  
1992 ◽  
Vol 5 (4) ◽  
pp. 607-610 ◽  
Author(s):  
K. L. Wells ◽  
W. O. Thom ◽  
H. B. Rice

Crop Science ◽  
1991 ◽  
Vol 31 (6) ◽  
pp. 1674-1680 ◽  
Author(s):  
P. H. Dernoeden ◽  
J. N. Crahay ◽  
D. B. Davis

Author(s):  
Akira Ebihara ◽  
Arihiro Iwasaki ◽  
Youhei Miura ◽  
Ghulam Jeelani ◽  
Tomoyoshi Nozaki ◽  
...  

Synthesis ◽  
2021 ◽  
Author(s):  
Xinjun Luan ◽  
Jingxun Yu

AbstractTransition-metal-catalyzed C–N bond formation is one of the most important pathways to synthesize N-heterocycles. Hydroxylamines can be transformed into a nucleophilic reagent to react with a carbon cation or coordinate with a transition metal; it can also become an electrophilic nitrogen source to react with arenes, alkenes, and alkynes. In this short review, the progress made on transition-metal-catalyzed cycloadditions with hydroxylamines as a nitrogen source is summarized.1 Introduction2 Cycloaddition To Form Aziridine Derivatives2.1 Intramolecular Cycloaddition To Form Aziridine Derivatives2.2 Intermolecular Cycloaddition To Form Aziridine Derivatives3 Cycloaddition To Form Indole Derivatives4 Cycloaddition To Form Other N-Heterocycles4.1 Aza-Heck-Type Amination Reactions4.2 Nitrene Insertion Amination Reactions4.3 Intramolecular Nucleophilic and Electrophilic Amination Reactions5 Conclusion and Outlook


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