The ability of two diazotrophic cyanobacteria Westiellopsis prolifica and Anabaena variabilis were examined to solubilize extracellular insoluble tricalcium phosphate (TCP) and Mussorie rock phosphate (MRP). The two strains exhibited a differential response to insoluble forms of phosphorus used. W. prolifica showed better growth in presence of MRP while A. variabilis proliferated better in presence of TCP. Biological nitrogen fixation measured in terms of acetylene reduction (AR) activity showed significant variation among the concentrations of TCP or MRP and time of incubation. W. prolifica and A. variabilis showed maximum AR activity on 14 and 21 days of incubation respectively. In general AR activity in presence of MRP was always less than that in presence of TCP at all concentrations. Among the two cyanobacteria A. variabilis was best in terms of P-solubilization and nitrogen fixation and TCP (20 mg P l(-1)) was the best source of insoluble P rather than MRP or K(2)HPO(4).
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3209874 | PMC |
| http://dx.doi.org/10.1007/s12088-011-0081-x | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Preparation and evaluation of MSR-1 bioinoculant on the growth and productivity of (L.) R. Wilczek.
3 Biotech
February 2025
Marine Biotechnology and Bioproducts Laboratory, Department of Biomedical Sciences, School of Biosciences and Technology, Vellore Institute of Technology, Vellore, 632014 Tamil Nadu India.
Unlabelled: Recently, there has been a growing interest in the application of beneficial microorganisms to enhance crop performance. (MSR-1) are spiral-shaped, gram-negative bacteria that exhibit magnetotaxis with the help of magnetosomes (iron oxide or iron sulphide). They have exhibited biomedical and environmental applications; however, the agricultural utilization of these strains is yet to be explored.
View Article and Find Full Text PDFRecent advances in the nitrogen cycle involving actinomycetes: Current situation, prospect and challenge.
Bioresour Technol
January 2025
Key laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Science, Key Laboratory of Karst Georesources and Environment (Guizhou University), Ministry of Educatio, Guizhou University, Guiyang 550025 Guizhou Province, China. Electronic address:
Actinomycetes are essential for sustaining the ecosystem's nitrogen balance and stimulating plant development. In contrast, existing detection and culture techniques for actinomycetes are still limited, making it difficult to fully assess their role in the nitrogen cycle. This review emphasized the advantages of actinomycetes in ecological restoration, outlined the current status and challenges of research on nitrogen cycling by actinomycetes.
View Article and Find Full Text PDFRecent advances in graphitic carbon nitride-based nanocomposites for energy storage and conversion applications.
Nanotechnology
January 2025
Qingdao University, Ningxia Road 308, Qingdao, Shandong, 266071, CHINA.
Graphitic carbon nitride (g-C3N4) has gained significant attention as a promising nonmetallic semiconductor photocatalyst due to its photochemical stability, favorable electronic properties, and efficient light absorption. Nevertheless, its practical applications are hindered by limitations such as low specific surface area, rapid recombination of photogenerated charge carriers, poor electrical conductivity, and restricted photo-response ranges. This review explores recent advancements in the synthesis, modification and application of g-C3N4 and its nanocomposites with a focus on addressing these challenges.
View Article and Find Full Text PDFUnelongated Stems are an Active Nitrogen-Fixing Site in Rice Stems Supported by Both Sugar and Methane Under Low Nitrogen Conditions.
Rice (N Y)
January 2025
Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa, Nagoya, Aichi, 464-8601, Japan.
Enhancing nitrogen (N) fixation in rice plants can reduce N fertilizer application and contribute to sustainable rice production, particularly under low-N conditions. However, detailed microbial and metabolic characterization of N fixation in rice stems, unlike in the well-studied roots, has not been investigated. Therefore, the aim of this study was to determine the active N-fixing sites, their diazotroph communities, and the usability of possible carbon sources in stems compared with roots.
View Article and Find Full Text PDFSoil and climatic conditions determine the rhizobia in association with Phaseolus vulgaris in southern Brazil.
Braz J Microbiol
January 2025
Laboratório de Genética de Microrganismos (LAGEM), Departamento de Biologia Geral - CCB, Universidade Estadual de Londrina - Campus Universitário, Londrina, PR, Brazil.
The common bean (Phaseolus vulgaris L.) plays a significant economic and social role in Brazil. However, the national average yield remains relatively low, largely because most bean cultivation is undertaken by small-scale farmers.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!