Isolation, identification and characterization of rice field Calothrix spp. of Assam
نویسنده
چکیده
Cyanobacteria are one of the important components of rice field ecosystems. Few of which have the ability to fix atmospheric nitrogen and are therefore, considered as natural biofertilizer which enrich the productivity of rice. Calothrix is one of the potent groups of N2 fixing cyanobacteria and is very common in rice grown areas of Assam. Therefore, the present survey conducted in rice field soils of Assam to study the diversity of Calothrix spp. Altogether 5 strains were isolated, identified and characterized based on morphological characters as well as 16S rRNA gene sequence.
منابع مشابه
Isolation and identification of Eurotium species from contaminated rice by morphology and DNA sequencing
30 milled rice samples were collected from retailers in four states of Malaysia. These samples were evaluated for Eurotium spp. contaminations by direct plating on malt extract salt agar (MESA). All Eurotium were isolated and identified based on morphology and nucleotide sequences of internal transcribed spacer 1 (ITS1) and ITS2 of the rDNA. Four Eurotium species (E. rubrum, E. amstelodami, E....
متن کاملFingerprinting of some Egyptian rice genotypes using Intron-exon Splice Junctions (ISJ) markers
DNA fingerprinting has become an important tool for diversity assessment and varietal identification in plant breeding programs. Semi- random PCR primers targeting intron-exon splice junctions (ISJ) were used to evaluate the potential of these markers in identification and classification of rice genotypes. A total of 12 ISJ primers were used for screening fourteen Egyptian rice genotypes, inclu...
متن کاملIdentification and Characterization of Leishmania spp. in Impreession Smears of Patients with Cutaneous Leishmaniasis
Background: Monoclonal antibodies have been employed extensively for the identification of Leishmania species, development of diagnostic tests and in the characterization of defined leishmanial antigens. Objectives: Identification and characterization of Leishmania spp. directly from cutaneous lesions of infected individuals. Methods: An immunoperoxidase test (Avidin-Biotin technique) using mo...
متن کاملCharacterization and Phylogenetic Analysis of Magnaporthe spp. strains on Various Hosts in Iran
Background: Populations of Magnaporthe, the causal agent of rice blast disease, are pathotypically and genetically diverse and therefore their interaction with different rice cultivars and also antagonistic microorganisms are very complicated. Objectives: The objectives of the present study were to characterize phylogenetic relationships of 114 native Magnaporthe strains, isolated from rice a...
متن کاملA Preliminary Report on the Isolation and Identification of Magnetotactic bacteria from Iran Environment
Several species of Magnetotactic bacteria have been discovered recently. These bacteria synthesize intracellular magnetic nanoparticles in specific sizes and shapes and arrange them in chains. These particles called magnetosomes and can be used for drug-delivery, cell-targeting and hyperthermia. Magnetotactic bacteria navigate along the magnetic field; this process is known as ‘magnetotaxis’ wh...
متن کامل