Nitrogen-fixing blue-green algae in acid forest and nursery soils

1968 ◽  
Vol 14 (11) ◽  
pp. 1179-1183 ◽  
Author(s):  
M. F. Jurgensen ◽  
C. B. Davey
Keyword(s):  
Forest Soils ◽  
Atlantic Coast ◽  
Appalachian Mountains ◽  
Soil Surface ◽  
Nostoc Muscorum ◽  
Algal Flora ◽  
Nitrogen Fixing ◽  
Nostoc Commune ◽  
Blue Green Algae ◽  
Green Algal

Algal populations were studied in soils from sites representing several major forest types ranging from the spruce–fir forests in the Appalachian Mountains to the Southern pine forests along the Atlantic Coast. In addition, the nitrogen-fixing blue-green algal population of a forest tree nursery was examined.The results of this investigation indicate a general lack of nitrogen-fixing algae in acid forest soils. However, a pronounced development of these algae was observed in the acid nursery soil, especially on the soil surface. Low numbers of algae were found in some forest soils but only when the soil was above pH 5.4. No nitrogen-fixing Cyanophyceae were isolated from soils in the Appalachian Mountains regardless of soil acidity. Nostoc muscorum was the most common nitrogen-fixing species occurring under both forest and nursery conditions. Nostoc commune was isolated only from the nursery soil. Several strains of Nostoc ellipsosporum were obtained from a mixed hardwood–softwood site. An examination of the algal flora of a number of Alaskan tundra soils gave results similar to those found in the forest soils.

scholarly journals Investigation on the Nitrogen Fixing Cyanobacteria (BGA) in Rice Fields of North-West Region of Bangladesh. III: Filamentous (Heterocystous)

2015 ◽  
Vol 6 (1) ◽  
pp. 253-259
Author(s):  
MA Hasan
Keyword(s):  
Distribution Pattern ◽  
Agricultural Land ◽  
Rice Fields ◽  
Atmospheric Nitrogen ◽  
Nitrogen Fixing ◽  
North West ◽  
Blue Green Algae ◽  
Green Algal ◽  
West Region ◽  
Growth Promoting

The experiment was conducted to carry out the nitrogen fixing cyanobacterial (BGA) resources and their distribution pattern in rice fields of North-West region of Bangladesh during the period of 2011. Considering the vast importance of Blue-green algae (BGA) in agricultural land especially in rice fields, their twelve months long systematic was undertaken. A total of 10 genera with 37 species of filamentous-heterocystous blue-green algal forms were identified and recorded from this region. Out of 37 species, 9 species belonging to the genus Anabaena, 8 to Nostoc, 5 to Cylindrospermum, 4 to Calothrix, 3 to Rivularia, 3 to Gloeotrichia and 2 to Aulosira; while 1 species belonging to each genus of Anabaenopsis, Microcheate and Aphanizomenon. The distribution pattern of filamentous-heterocystous BGA in rice fields over the study area has also been observed in this study. With few exceptions, the filamentous-heterocystous BGA are more or less uniformly distributed all over the study areas. All of the BGA members have a tremendous ability to contribute on enhancing agricultural production by fixing atmospheric nitrogen and adding organic matter, vitamins, growth promoting substances etc to the soil and crops.DOI: http://dx.doi.org/10.3329/jesnr.v6i1.22075 J. Environ. Sci. & Natusral Resources, 6(1): 253-259 2013

scholarly journals Investigation on the Nitrogen Fixing Cyanobacteria (BGA) in Rice Fields of North-West Region of Bangladesh. I: Nonfilamentous

2013 ◽  
Vol 5 (2) ◽  
pp. 185-192 ◽  
Author(s):  
MA Hasan
Keyword(s):  
Distribution Pattern ◽  
Agricultural Land ◽  
Rice Fields ◽  
Nitrogen Fixing ◽  
Systematic Observation ◽  
North West ◽  
Blue Green Algae ◽  
Green Algal ◽  
West Region ◽  
Growth Promoting

The experiment was conducted to carry out the nitrogen fixing cyanobaterial (BGA) resources and their distribution pattern in rice fields of North-West region of Bangladesh during the period of 2011. Considering the vast importance of Blue-green algae (BGA) in agricultural land especially in rice fields, twelve months long systematic observation was undertaken. A total of 15 genera with 42 species of non-filamentous (unicellular and colonial) blue-green algal forms were identified and recorded from this region. Out of 42 species, 9 species belonging to the genus Aphanocapsa, 8 to Chroococcus, 5 to Gloeocapsa, 4 to Aphanothece, 3 to Gloeothece, 3 to Merismopedia and 2 to Coelosphaerium; while 1 species belonging to each genus of Chroococcidiopsis, Synechococcus, Synechocystis, Dactylococcopsis, Microcystis, Myxosarcina, Hydrococcus and Xenococcus. The distribution pattern of non-filamentous BGA in rice fields over the study area has also been observed in this study. With few exceptions, the non-filamentous BGA are more or less uniformly distributed all over the study areas. All of the BGA members have a tremendous ability to contribute on enhancing agricultural production by fixing atmospheric nitrogen and adding organic matter, vitamins, growth promoting substances etc to the soil and crops.DOI: http://dx.doi.org/10.3329/jesnr.v5i2.14812 J. Environ. Sci. & Natural Resources, 5(2): 185-192 2012

Blue-green algae of a developing salt marsh

1963 ◽  
Vol 43 (2) ◽  
pp. 309-317 ◽  
Author(s):  
W. D. P. Stewart ◽  
G. J. F. Pugh
Keyword(s):  
Salt Marsh ◽  
Green Algae ◽  
Salt Marshes ◽  
Personal Communication ◽  
Soil Samples ◽  
Algal Flora ◽  
Present Communication ◽  
Blue Green Algae ◽  
The Past ◽  
Green Algal

In the past few years considerable attention has been paid to the distribution of the microflora of the salt marshes at Gibraltar Point, Lincolnshire (National Grid reference TF 555576). During these studies it was observed (Turner, personal communication) that blue-green algae (Myxophyceae) were of frequent occurrence in soil samples from the region, but no analyses of the algal flora were carried out. It is well established, however, that blue-green algae are generally present in salt marsh regions (Chapman, 1960 a). Previous studies on the blue-green algae of British salt marshes are few, although detailed investigations have been carried out at Canvey and Ynyslas (Carter, 1932, 1933 a, b) and Scolt Head Island (Chapman, 1939). Some difficulty is experienced, however, in attempting to correlate these results with present day studies, mainly because of the widespread colonization of salt marsh regions within recent years by Spartina townsendii H. & J. Groves, and by the fact that few quantitative data are available. It is hoped that the present communication which is concerned with the blue-green algal flora of the New Marsh at Gibraltar Point, a region dominated by Spartina townsendii, will allow an assessment to be made of the flora prevailing in a developing salt marsh under present-day conditions.

Blue-green algal flora on the rock surface of temples and monuments of India

1999 ◽  
Vol 110 (1-2) ◽  
pp. 133-144
Author(s):  
P. Tripathy ◽  
A. Roy ◽  
N. Anand ◽  
S. P. Adhikary
Keyword(s):  
Rock Surface ◽  
Algal Flora ◽  
Green Algal

Amelioration of sodic soils with blue-green algae

Soil Research ◽  
1981 ◽  
Vol 19 (3) ◽  
pp. 361 ◽  
Author(s):  
D Subhashini ◽  
BD Kaushik
Keyword(s):  
Electrical Conductivity ◽  
Hydraulic Conductivity ◽  
Nitrogen Content ◽  
Total Nitrogen ◽  
Algal Growth ◽  
Algal Flora ◽  
Exchangeable Sodium ◽  
Sodic Soils ◽  
Blue Green Algae ◽  
Biological Input

Algal growth resulted in significant reductions in pH, electrical conductivity, exchangeable sodium and in hydraulic conductivity and aggregation status of the soil. There was a significant increase in the total nitrogen content of the soil due to algal growth. Two out of the three inoculated species of algae could establish in the pots along with the indigenous algal flora. Combination of gypsum and algal application were found to have appreciable reclamative properties, and the possibility of using algae as a biological input for the reclamation of sodic soils has been indicated.

Nitrogen fixation

1976 ◽  
Vol 274 (934) ◽  
pp. 341-358 ◽  
Keyword(s):  
Nitrogen Fixation ◽  
Metabolic Regulation ◽  
Higher Plants ◽  
Focal Point ◽  
Nitrogenase Activity ◽  
Nitrogen Fixing ◽  
Blue Green Algae ◽  
International Biological Programme ◽  
The 1960S ◽  
Biological Programme

The International Biological Programme served as a focal point for studies on biological nitrogen fixation during the 1960s. The introduction of the acetylene reduction technique for measuring nitrogenase activity in the field led to estimates becoming available of the contribution of lichens, blue-green algae, nodulated non-legumes and bacterial-grass associations, as well as of legumes. Other studies carried out on the physiology and biochemistry of the process led to the eventual purification and characterization of the nitrogenase enzyme. These studies, collectively, provided the springboard for current work, so essential in view of the present energy crisis, on how to increase the use and efficiency of nitrogen-fixing plants, on the metabolic regulation of the nitrogenase enzyme and on the genetics of the nitrogen-fixing process, both in higher plants and in free-living micro-organisms.

scholarly journals PHARMACEUTICAL POTENTIAL OF LABORATORY GROWN CULTURES OF BLUE-GREEN ALGAE: A COMPREHENSIVE REVIEW AND FUTURE POSSIBILITIES

2021 ◽  
Vol 9 (5) ◽  
pp. 543-571
Author(s):  
Ritu Chauhan ◽  
◽  
Abhishek Chauhan ◽  
Ashutosh Tripathi ◽  
Anuj Ranjan ◽  
...  
Keyword(s):  
Green Algae ◽  
Bioactive Compounds ◽  
Current Knowledge ◽  
Biological Activities ◽  
Biologically Active ◽  
Primary And Secondary Metabolites ◽  
Blue Green Algae ◽  
Green Algal ◽  
Algal Group ◽  
Diverse Application

COVID-19 pandemic has taught the world researchers the urgent need for new sources and novel pharmaceuticals not only for existing diseases but also for both seasonal epidemics and future pandemics. Pharmaceutical drug discoveries for the past fifty years depended deeply on the procedure of empirical transmission of a huge number of pure bioactive compounds to provide new leads. The screening of extracts or isolating compounds is a common way to discover novel biologically active molecules. Most of the valuable Blue-Green algal metabolites are concentrated in their biomass. For existence in nature, Blue-Green algae (BGA) secrete and contain various organic substances like proteins, fatty acids, vitamins, pigments, primary and secondary metabolites, and these compounds are explored for potential biological activities such as antibacterial, antifungal, antiviral (including the anti-SARS-CoV-2 virus that causes COVID-19), anticancer, antioxidant, antidiabetic, protease inhibitory activity, anti-inflammatory activity, etc. Due to their diverse application, pharmaceutical companies have shown commercial interest in the Blue-green algal group for the discovery and development of novel molecules to combat deadly diseases for the benefit of society and mankind. The current review paper highlights and discusses the diverse pharmaceutical potential of laboratory-grown cultures of BGA along with comprehensive and current knowledge on bioactive compounds discovered by researchers globally.

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