Morphology and ultrastructure of the cyanobacterium Mastigocladus laminosus growing under nitrogen-fixing conditions

1984 ◽  
Vol 137 (2) ◽  
pp. 97-103 ◽  
Author(s):  
S. A. Nierzwicki-Bauer ◽  
D. L. Balkwill ◽  
S. E. Stevens
Keyword(s):  
Nitrogen Fixing ◽  
Mastigocladus Laminosus

Morphology and Ultrastructure of Mastigocladus Laminosus

1981 ◽  
Vol 39 ◽  
pp. 408-409
Author(s):  
S. A. Nierzwicki ◽  
D. Maratea ◽  
D. L. Balkwill ◽  
V. B. Mehta ◽  
S. E. Stevens
Keyword(s):  
Green Alga ◽  
Filamentous Cyanobacterium ◽  
Atmospheric Nitrogen ◽  
Blue Green Alga ◽  
Nitrogen Fixing ◽  
Size And Shape ◽  
Mastigocladus Laminosus ◽  
Complex Morphology ◽  
Thermophilic Cyanobacterium ◽  
Sem And Tem

Mastigocladus laminosus is a filamentous cyanobacterium (blue-green alga) with a complex morphology. It is the only thermophilic cyanobacterium known to fix atmospheric nitrogen. Relatively little is known of the detailed morphology and ultrastructure of this organism, especially in regard to its nitrogenfixing abilities. The purpose of this study was to characterize the morphology and ultrastructure of M. laminosus, using SEM and TEM respectively.The complex morphology of M. laminosus is shown in Fig. 1. Young filaments had a diameter of ∼2.2 μm and consisted of relatively uniform, rod-shaped cells. The uniformity of these filaments was interrupted only by the occasional appearance of heterocysts (nitrogen-fixing bodies) about 4 μm in diameter (not shown). As young filaments elongated and aged, the older sections increased in diameter to 10-12 μm. Their cells became rounder and less uniform with respect to size and shape. Branches often formed in the older sections, giving rise to new young filaments.

Effects of intercropping with soybean on bacterial and nitrogen-fixing bacterial diversity in the rhizosphere of sugarcane

2014 ◽  
Vol 38 (9) ◽  
pp. 959-969 ◽  
Author(s):  
PENG Dong-Hai ◽  
◽  
◽  
YANG Jian-Bo ◽  
LI Jian ◽  
...  
Keyword(s):  
Bacterial Diversity ◽  
Nitrogen Fixing

Competition between nitrogen-fixing cyanobacteria during phosphorus-limited growth

1995 ◽  
Vol 32 (4) ◽  
pp. 99-101 ◽  
Author(s):  
W. T. (Pim) De Nobel ◽  
N. Staats ◽  
L. R. Mur
Keyword(s):  
Light Intensity ◽  
Competitive Advantage ◽  
Future Study ◽  
Nitrogen Fixing ◽  
Limited Growth

The phosphorus-limited growth of cultures of the nitrogen-fixing cyanobacteria Aphanizomenon and Anabaena was investigated. In conditions of nutrient and light excess Anabaena has a competitive advantage. The lower the light intensity conditions at which Aphanizomenon populations dominate are indicated for future study.

Heterotrophic growth of the nitrogen fixing blue-green algaNostoc muscorum

1974 ◽  
Vol 14 (4) ◽  
pp. 297-302 ◽  
Author(s):  
A. H. El-Refai ◽  
M. A. Nashat ◽  
H. M. Salem
Keyword(s):  
Heterotrophic Growth ◽  
Nitrogen Fixing
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