Abstract:
:Spore (akinete) formation in the heterocystous and branched filamentous cyanobacterium Fischerella muscicola involves a significant increase in cell size and formation of several endospores in each of the cells. In present study, the physico-chemical factors (pH, light sources, nutrient deficiency, nitrogen sources, carbon sources, and growth hormones) affecting the germination of spores of F. muscicola were examined. Increase in spore germination frequency was detected above pH 8 with maximum germination (46.04%) recorded at pH 9, whereas a significant decrease in germination was observed at pH 6 when compared to control (pH 7.6). Spore germination was not observed at pH 5. Among light sources germination frequency followed the following order, that is, red light (39.9%) > white light (33.8%) > yellow light (3.4%) > green light (1.3%) whereas germination did not take place in dark and blue light. Ammonium chloride (NH4 Cl) supported maximum (99.5%) germination frequency followed by calcium nitrate (Ca(NO3 )2 ), potassium nitrate (KNO3 ), and minimum germination was observed in urea. Nutrient (phosphorus, calcium, and magnesium) deficiency significantly enhanced the germination frequency with maximum increase in magnesium (Mg) deficient condition. Further, supplementation of carbon sources (glucose, fructose, and sodium acetate) and growth hormones (IAA and GA) also enhanced the germination frequency in this cyanobacterium. Therefore, it may be concluded that, those factors supporting higher germination frequency could be considered for successful production and use of this cyanobacterium in biofertilizer and other algal production technologies.
journal_name
J Basic Microbioljournal_title
Journal of basic microbiologyauthors
Mishra BN,Kaushik MS,Abraham G,Singh PKdoi
10.1002/jobm.201800161subject
Has Abstractpub_date
2018-08-01 00:00:00pages
679-685issue
8eissn
0233-111Xissn
1521-4028journal_volume
58pub_type
杂志文章abstract::A simple photometric method for the determination of the agglutination rate of cells by lectins in a continuously stirred suspension is presented. Besides the agglutination rate the method allows the estimation of an average degree of agglutination, i.e. the number of cells per aggregate. The influence of the Con A-co...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.3620250806
更新日期:1985-01-01 00:00:00
abstract::Bacteria capable of methylating Hg2+ have been isolated from sediment, water, soil and the gastrointestinal tract of humans. However, very little is known about the physiology and genetics of the mechanisms controlling Hg2+ methylation. Mercury methylation can be either chromosomal or plasmid-encoded in bacteria. In a...
journal_title:Journal of basic microbiology
pub_type: 杂志文章,评审
doi:10.1002/jobm.3620260811
更新日期:1986-01-01 00:00:00
abstract::Ammonia oxidation, mainly driven by ammonia-oxidizing archaea (AOA) and bacteria (AOB), plays an important role in determining the rate of nitrification in riparian zones. However, the underlying factors driving the distribution and activity of AOA and AOB in riparian zones, especially in the rhizosphere of Phragmites...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.201800581
更新日期:2019-04-01 00:00:00
abstract::Intracellular proteolytic activity was detected in the haloalkaliphilic archaeon Natronococcus occultus during the stationary phase of cultures grown in complete medium and during carbon and nitrogen starvation. Puromycin prevented the occurrence of proteolytic activity in starved cells, suggesting that de novo synthe...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.3620370503
更新日期:1997-01-01 00:00:00
abstract::An extracellular lipase isolated from Bacillus megaterium AKG-1 had an optimum activity at 55 degrees C/pH 7.0. It retained 100% activity at 50 degrees C for 30 min with a half life of 30 min at 70 degrees C. A 20-70% increase in lipase activity was observed in presence of acetone (20% v/v), DMSO (20% v/v) and isoprop...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.200410498
更新日期:2005-01-01 00:00:00
abstract::Mn-oxidizing potential of two metal-tolerant bacterial strains - Halomonas meridiana and Marinobacter algicola isolated from the South West Indian Ridge waters were compared at varying concentrations of Mn (II), i.e., 1, 10, and 100 μmol and mmol L-1 . Accompanying changes in their morphology and metabolism were also ...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.201700580
更新日期:2018-05-01 00:00:00
abstract::The objective was to screen for and isolate a novel enzyme with the specific activity of a Δ6-fatty acid desaturase from Rhizopus oryzae. In this study, R. oryzae was identified as a novel fungal species that produces large amounts of γ-linolenic acid. A full-length cDNA, designated here as RoD6D, with high homology t...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.201200189
更新日期:2013-09-01 00:00:00
abstract::The phylogeny of the latest recognized domain, Archaea, is still complicated and it is largely based on environmental sequences. A culture independent molecular phylogenetic analysis revealed high Archaea diversity in a terrestrial hot spring, village Varvara, Bulgaria. A total of 35 archaeal operational taxonomic uni...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.201000160
更新日期:2011-04-01 00:00:00
abstract::Calcium signaling is one of the most important signaling-pathways in all eukaryotes. One important target activated by an increased intracellular calcium concentration via calmodulin is the protein phosphatase calcineurin, which is composed of a catalytic subunit (calcineurin A) and a regulatory subunit (calcineurin B...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.201200574
更新日期:2014-06-01 00:00:00
abstract::An Indian indigenous, Loktak Lake soil isolate Streptomyces violascens MT7 was assessed for its biocontrol potential both in vitro and in vivo against toxigenic fruit-rotting fungi. Strain MT7 exhibited broad-spectrum antifungal activity against various pathogenic postharvest fungi of citrus and papaya. In shake-flask...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.201500323
更新日期:2015-12-01 00:00:00
abstract::In the course of a screening for extracellular inhibitors of 8 different proteinases 140 actinomycete and 150 mould strains were examined. 130 fungal and 50 actinomycete strains were similarly tested for the production of extracellular inhibitors of dihydrofolate reductase (DHFR) and alkaline phosphatase (APh). Most o...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.3620290719
更新日期:1989-01-01 00:00:00
abstract::Industrial effluents contaminated sites may serve as repositories of ecologically adapted efficient pyrene degrading bacteria. In the present study, six bacterial isolates from industrial effluents were purified using serial enrichment technique and their pyrene degrading potential on pyrene supplemented mineral salt ...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.201500533
更新日期:2016-04-01 00:00:00
abstract::Citrobacter freundii is a worldwide emerging nosocomial pathogen with escalating incidence of multidrug resistance. Citrobacter freundii exists in natural environment, especially in health care settings and is difficult to eradicate. Phage therapy is considered as an alternative way of controlling bacterial infections...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.201200710
更新日期:2014-06-01 00:00:00
abstract::Phytochromes are photoreceptor proteins involved in the detection of the red and far-red regions of the visible light spectrum. Fungal phytochromes are hybrid histidine kinases with a conserved domain architecture composed of an N-terminal photosensory module and a C-terminal regulatory output module that includes the...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.201500078
更新日期:2015-09-01 00:00:00
abstract::The infective capacities of the nitrogen fixing Actinomycete Frankia and arbuscular mycorrhizal fungi from soils near watercourses, along a vegetation gradient, were studied using plant bioassays. Frankia and arbuscular mycorrhizas capable of infecting Discaria trinervis were found at seventeen sites sampled. More spe...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.200510095
更新日期:2006-01-01 00:00:00
abstract::Histone-like nucleoid-structuring protein (H-NS) and integration host factor (IHF) are major nucleoid-associated proteins, and DnaA, a replication initiator, may also be related with nucleoid compaction. It has been shown that protein-dependent DNA compaction is related with many aspects of bacterial physiology, inclu...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.201900497
更新日期:2020-02-01 00:00:00
abstract::Eighty-seven culturable endophytic bacterial isolates in 19 genera were obtained from coffee plants collected in Colombia (n = 67), Hawaii (n = 17), and Mexico (n = 3). Both Gram positive and Gram negative bacteria were isolated, with a greater percentage (68%) being Gram negative. Tissues yielding bacterial endophyte...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.200410551
更新日期:2005-01-01 00:00:00
abstract::Gordoniae are one of the most promising hydrocarbon-oxidizing actinobacteria. Here we present the genome sequence analysis of thermotolerant strain Gordonia sp. 1D isolated from oil-refinery soil. It is capable of alkane consumption and biosurfactant production at temperatures of up to 50°C. Gordonia sp. 1D demonstrat...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.201900439
更新日期:2020-01-01 00:00:00
abstract::A simulation model was established in this study to evaluate the impacts of assimilable organic carbon concentration on the growth of biofilm and bulk bacteria under lower flow velocity conditions. The experimental results showed that the growth trends of heterotrophic plate count bacteria of biofilm and bulk bacteria...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.200510583
更新日期:2005-01-01 00:00:00
abstract::Surface cultures of Fusarium culmorum JP15 were found to respond to extracts of other fungi by enhanced production of orange-red fusarubin pigments and formation of aerial mycelium. Two inducers from strain Ulocladium sp. HKI 0226, the new (-)-terpestacin (1) and L-tenuazonic acid (2), were isolated. 1 inhibited syncy...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/1521-4028(200107)41:3/4<179::aid-jobm179>3
更新日期:2001-01-01 00:00:00
abstract::Acinetobacter spp. are ubiquitous obligate aerobic bacteria which occur mostly as commensals on the skin, and in soil, water and plants' rhizosphere. Though the species in this genus have been implicated as aetiologies in some nosocomial infections, their versatility covers biodegradation or dissolution leading to bio...
journal_title:Journal of basic microbiology
pub_type: 杂志文章,评审
doi:10.1002/jobm.201100323
更新日期:2012-12-01 00:00:00
abstract::107 species and 8 species varieties belonging to 44 genera were collected from combine harvester wheat and sorghum dusts (35 genera and 91 species + 4 varieties) and from the atmosphere of their hay sites (26 genera and 69 species + 4 varieties) on glucose- and cellulose-Czapek's Dox agar at 28 degrees C and 45 degree...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.3620300702
更新日期:1990-01-01 00:00:00
abstract::Xylella fastidiosa, the causal agent of citrus variegated chlorosis (CVC), colonizes plant xylem, reducing sap flow, and inducing internerval chlorosis, leaf size reduction, necrosis, and harder and smaller fruits. This bacterium may be transmitted from plant to plant by sharpshooter insects, including Bucephalogonia ...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.201400916
更新日期:2015-12-01 00:00:00
abstract::The diversity of Actinobacteria associated with Paratrechina longicornis, an ant species that prefers a high protein diet, in a subtropical dry forest (Guánica, Puerto Rico) was determined by culture methods and by 16S rDNA clone libraries. The results of both methodologies were integrated to obtain a broader view of ...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.201300785
更新日期:2015-01-01 00:00:00
abstract::beta -Glucosidase is a highly desired glycosidase, especially for hydrolysis of glycoconjugated precursors in musts and wines for the release of active aromatic compounds. A Shewanella sp. G5 strain was isolated from the intestinal content of benthonic organism (Munida subrrugosa) from different coastal areas of the B...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.200700146
更新日期:2008-02-01 00:00:00
abstract::The Anoxybacillus sp. SK 3-4, previously isolated from a hot spring, was screened for its heavy metals resistance (Al(3+), Mn(2+), Cu(2+), Co(2+), Zn(2+), and Ni(2+)) and the strain was found to be most resistant to aluminum. Significant growth of the strain was observed when it was grown in medium containing aluminum...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.201400621
更新日期:2015-04-01 00:00:00
abstract::This paper deals with the interactions of chromium (Cr) with biological systems, focusing in particular on yeasts and fungi. These interactions are analysed with primarily regard to biochemical functions, but higher levels of organization are also considered. Thus, the morphological and cytological characteristics of ...
journal_title:Journal of basic microbiology
pub_type: 杂志文章,评审
doi:10.1002/jobm.200900170
更新日期:2010-02-01 00:00:00
abstract::For mass cultivation of group B streptococci (B-III and B-variant streptococci), a fermenter dialysis culture technique is described and compared to conventional shaking culture and fermenter batch culture techniques. The influence of two kinds of cultivation media on the bacterial yield is demonstrated. The growth ra...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.3620290316
更新日期:1989-01-01 00:00:00
abstract::Epiphytic microbes are common inhabitants of freshwater submerged macrophytes, which play an important role in aquatic ecosystems. An important precondition for studying the epiphytic microbes is having an effective method of separating the attached microbes from the host macrophytes. We developed an ultrasound-based ...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.201300041
更新日期:2014-07-01 00:00:00
abstract::Ribosomal efficiency (RE) estimates provide a quantitative descriptor of intrinsic growth rate of cell populations using readily-obtainable experimental data. In Aspergillus nidulans chemostat cultures, RE increased linearly with growth rate over the range 25-60% of maximum growth rate (mu max), consistent with increa...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/(sici)1521-4028(199912)39:5/6<293::aid-job
更新日期:1999-01-01 00:00:00