Variation in nitrogen source utilisation by Pisolithus isolates maintained in axenic culture

Mycorrhiza ◽  
2001 ◽  
Vol 11 (1) ◽  
pp. 53-56 ◽  
Author(s):  
Ian C. Anderson ◽  
Susan M. Chambers ◽  
J. W. G. Cairney
Keyword(s):  
Nitrogen Source ◽  
Axenic Culture

Growth and Terpenoid Production of an Axenic Culture from the Liverwort Ricciocarpos natans

1990 ◽  
Vol 45 (1-2) ◽  
pp. 13-18 ◽  
Author(s):  
Gerald Wurzel ◽  
Hans Becker
Keyword(s):  
Light Intensity ◽  
Nitrogen Source ◽  
Axenic Culture ◽  
Light Regime ◽  
Culture Period ◽  
Molar Ratio ◽  
Nitrate Content ◽  
The Media

Abstract Ricciocarpos natans grows best on Gamborg B5 medium supplemented with 2% sucrose. Six other mineral media were less effective on the growth. During a culture period, pH of the media changed depending on the ammonium and nitrate content of the respective media. In media of a molar ratio of ammonium to nitrate of 1:1 or 1:1.9, pH first dropped from 6.0 to about 3.5 and then rose again. In media where nitrate is the only nitrogen source or where there is a ratio of ammonium to nitrate of 1:12.5, pH rose during the first two weeks and after this dropped. Differences in the light intensity (2000 an d 6000 lx) and light regime (14 h light/ 10 h dark) had no effects on the growth. The cultures produced a variety of terpenoids. The same pattern of compounds was seen in field-collected material as well as in cultivated material. The content of the terpenoids decreased on nitrogen and phosphorous-deficient media.

Differences in the uptake of glucose and glycerol by Tieghemiomyces parasiticus in axenic culture

1974 ◽  
Vol 52 (12) ◽  
pp. 2571-2574 ◽  
Author(s):  
Frank L. Binder
Keyword(s):  
Nitrogen Source ◽  
Surface Active Agent ◽  
Active Agent ◽  
Axenic Culture ◽  
Casein Hydrolysate ◽  
Tween 80 ◽  
Control Medium ◽  
Surface Active ◽  
Glycerol Uptake ◽  
Axenic Growth

Tieghemiomyces parasiticus, a biotrophic haustorial mycoparasite, makes excellent axenic growth on a glycerol – casein hydrolysate medium, while growth on a glucose – casein hydrolysate medium is equivalent to that of a control medium containing only the nitrogen source. A comparison of 14C-glucose and 14C-glycerol uptake indicates these substrates enter this mycoparasite at significantly different rates. Incorporation of 14C-glucose is extremely slow and limited, while 14C-glycerol incorporation is very rapid. Excellent axenic growth of this mycoparasite occurs when a glucose – casein hydrolysate medium is supplemented with the surface-active agent Tween 80. These findings suggest that the inability of glucose to support growth results from the inability of this substrate to readily enter the vegetative hyphae of this mycoparasite when cultured axenically.

In vitro Evaluation of Ammonium Base Sulfite Liquor as an Energy and Nitrogen Source for Ruminants

1976 ◽  
Vol 42 (4) ◽  
pp. 993-1001 ◽  
Author(s):  
R. P. Kromann ◽  
T. R. Wilson ◽  
G. S. Cantwell
Keyword(s):  
Nitrogen Source ◽  
In Vitro Evaluation

Does Nitrogen Source Affect the Palatability of Coastal Bermudagrass? 1

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

Response of No-Till Corn to Nitrogen Source, Rate, and Time of Application

jpa ◽  
1992 ◽  
Vol 5 (4) ◽  
pp. 607-610 ◽  
Author(s):  
K. L. Wells ◽  
W. O. Thom ◽  
H. B. Rice
Keyword(s):  
Nitrogen Source ◽  
Time Of Application ◽  
No Till ◽  
Source Rate

Spring Dead Spot and Burmudagrass Quality As Influenced by Nitrogen Source and Potassium

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

Hydroxylamines as One-Atom Nitrogen Sources for Metal-Catalyzed Cycloadditions

Synthesis ◽  
2021 ◽  
Author(s):  
Xinjun Luan ◽  
Jingxun Yu
Keyword(s):  
Transition Metal ◽  
Nitrogen Source ◽  
Nucleophilic Reagent ◽  
Nitrogen Sources ◽  
Short Review ◽  
Indole Derivatives ◽  
Electrophilic Amination ◽  
Intramolecular Cycloaddition ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed

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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