Abstract：
:Unicellular microalgae generally grow in the presence of bacteria, particularly when they are farmed massively. This study analyzes the bacteria associated with mass culture of Botryococcus braunii: both the planktonic bacteria in the water column and those forming biofilms adhered to the surface of the microalgal cells (∼10⁷-10⁸ culturable cells per gram microalgae). Furthermore, we identified the culturable bacteria forming a biofilm in the microalgal cells by 16S rDNA sequencing. At least eight different culturable species of bacteria were detected in the biofilm and were evaluated for the presence of quorum-sensing signals in these bacteria. Few studies have considered the implications of this phenomenon as regards the interaction between bacteria and microalgae. Production of C4-AHL and C6-AHL were detected in two species, Pseudomonas sp. and Rhizobium sp., which are present in the bacterial biofilm associated with B. braunii. This type of signal was not detected in the planktonic bacteria isolated from the water. We also noted that the bacterium, Rhizobium sp., acted as a probiotic bacterium and significantly encouraged the growth of B. braunii. A direct application of these beneficial bacteria associated with B. braunii could be, to use them like inoculants for large-scale microalgal cultures. They could optimize biomass production by enhancing growth, particularly in this microalga that has a low growth rate.
journal_name
Microb Ecoljournal_title
Microbial ecologyauthors
Rivas MO,Vargas P,Riquelme CEdoi
10.1007/s00248-010-9686-6subject
Has Abstractpub_date
2010-10-01 00:00:00pages
628-35issue
3eissn
0095-3628issn
1432-184Xjournal_volume
60pub_type
杂志文章abstract：:The abundance of ultramicrobacteria (i.e., bacteria that pass through a 0.2μm filter) in a subtropical Alabama estuary was determined during a 1-year period. Although phenotypic and molecular characterization indicated that the population of ultramicrobacteria was dominated byVibrio species, species ofListonella andPs...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF02013017
更新日期：1987-09-01 00:00:00
abstract：:Several Mesorhizobium species are able to induce effective nodules in chickpea, one of the most important legumes worldwide. Our aims were to examine the biogeography of chickpea rhizobia, to search for a predominant species, and to identify the most efficient microsymbiont, considering Portugal as a case study. One h...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-009-9536-6
更新日期：2009-11-01 00:00:00
abstract：:Rhizoremediation has been suggested as an attractive bioremediation strategy for the effective breakdown of pollutants in soil. The presence of plant root exudates such as organic acids, sugars, and amino acids that may serve as carbon sources or biosynthetic building blocks and the limited bioavailability of iron may...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-002-2023-y
更新日期：2003-01-01 00:00:00
abstract：:The original article contained mistakes in the authors' affiliations. ...
journal_title：Microbial ecology
pub_type： 已发布勘误
doi：10.1007/s00248-020-01641-3
更新日期：2020-11-20 00:00:00
abstract：:Seven known species of rumen ciliates and mixedEntodinium spp. showed association with plant particles in rumen fluid in vitro. Association was greater with fresh particles than with hay, and substantially decreased when the water-soluble components of the particles were removed, suggesting that the water-soluble comp...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF02015109
更新日期：1985-03-01 00:00:00
abstract：:Fish gut microbiota play important roles in fish immunity, nutrition, and the adaptation to environmental changes. To date, few studies have focused on the interactions among environmental factors, fish diseases, and gut microbiota compositions. We compared the gut bacterial communities of healthy crucian carps (Caras...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-017-0967-1
更新日期：2017-10-01 00:00:00
abstract：:Carnivorous pitcher plants Sarracenia purpurea host diverse eukaryotic and bacterial communities which aid in insect prey digestion, but little is known about the functional processes mediated by the microbial communities. This study aimed to connect pitcher community diversity with functional nutrient transformation ...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-018-1187-z
更新日期：2018-11-01 00:00:00
abstract：:With the recent advancement of next-generation sequencing methods, there has been an increase in studies on identification of vineyard microbiota, winery-associated microbiota, and microbiota in wine fermentation. However, there have been few studies investigating the fungal microbiota of table grapes which present di...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-021-01698-8
更新日期：2021-01-29 00:00:00
abstract：:Simulation modeling has been an integral, albeit ad hoc, component of the field of aquatic microbial ecology for the past two decades. One of the most critical steps in simulation modeling is the initial formulation of a clear set of questions and goals. It is doubtful that a single generic model could be constructed ...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF00166823
更新日期：1994-09-01 00:00:00
abstract：:The study presents evidence in support of the bacterial theory associated with the toxicity of Pyrodinium bahamense var. compressum. Bacterial endosymbionts from Philippine P. bahamense var. compressum strain Pbc MZRVA 042595 were isolated and identified via 16S rDNA sequence analysis. Taxonomic diversity of the ident...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-006-9128-7
更新日期：2006-11-01 00:00:00
abstract：:The anaerobic degradation ofp-cresol was studied with one sediment source under three reducing conditions-denitrifying, sulfidogenic, and methanogenic. Loss ofp-cresol (1 mM) in all the anaerobic systems took initially 3 to 4 weeks. In acclimated culturesp-cresol was degraded in less than a week.p-Cresol was completel...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF02543873
更新日期：1990-12-01 00:00:00
abstract：:Ochreous sludge deposited in the course of aeration of ground water contained an assortment of bacterial forms and structures which were investigated by light microscopy, scanning electron microscopy, and transmission electron microscopy. Bacterial structures were often covered by iron deposition which could be remove...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF02010579
更新日期：1979-03-01 00:00:00
abstract：:Biotic and abiotic factors can influence interactions between microbial grazers and their prey, thus impacting both the cycling of biogenic carbon within the surface layer of the ocean and the export of carbon to the deep ocean and higher trophic levels. In this study, microcosm experiments were used to evaluate the c...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-002-1058-4
更新日期：2003-03-01 00:00:00
abstract：:The community structure of methanogenic Archaea on anoxically incubated rice roots was investigated by amplification, sequencing, and phylogenetic analysis of 16S rRNA and methyl-coenzyme M reductase (mcrA) genes. Both genes demonstrated the presence of Methanomicrobiaceae, Methanobacteriaceae, Methanosarcinaceae, Met...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-003-2014-7
更新日期：2004-01-01 00:00:00
abstract：:Social stress can dramatically influence the health of animals via communication between gut microbiota and the HPA system. However, this effect has been rarely investigated among different social ranked animals after chronic repeated social encounters. In this study, we evaluated changes and differences in microbiota...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-019-01462-z
更新日期：2020-05-01 00:00:00
abstract：:Adenosine triphosphate in soil is measured by the luciferin-luciferase bioluminescence method. Cation exchange in the ATP extraction procedure is used to reduce the content of, e.g., Fe, Al, and Cations in extracts. The efficiency of the cation exchange is determined by measuring the concentration of Fe by X-ray fluor...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF02010504
更新日期：1979-06-01 00:00:00
abstract：:Francisella tularensis is associated with water and waterways and infects many species of animals, insects, and protists. The mechanism Francisella utilizes to persist in the environment and in tick vectors is currently unknown. We have demonstrated for the first time that Francisella novicida, a model organism of F. ...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-009-9586-9
更新日期：2010-04-01 00:00:00
abstract：:Arkashin Schurf (Arkashin) and Zavarzin Spring (Zavarzin), two active thermal pools in the Uzon Caldera, Kamchatka, Russia, were studied for geochemical and microbiological characterization. Arkashin, the smaller of the two pools, had broader temperature and pH ranges, and the sediments had higher concentrations of to...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-011-9979-4
更新日期：2012-04-01 00:00:00
abstract：:Abstract New data on 129 bacterial isolates were analyzed together with prior samples to characterize community-level patterns of legume-rhizobial symbiosis on Barro Colorado Island (BCI), Panama. Nodules have been sampled from 24 BCI legume species in 18 genera, representing about one quarter of the legume species an...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-007-9309-z
更新日期：2008-05-01 00:00:00
abstract：:Montmorillonitic clay influences the biological control ofEscherichia coli in aquatic systems, the magnitude of the effects being dependent on the state of the clay and the type of host-antagonist interaction. The interaction ofBdellovibrio andE. coli was partially inhibited by the presence of montmorillonite. Because...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF02013272
更新日期：1977-12-01 00:00:00
abstract：:Microcosms may potentially be used as tools for evaluating the fate and effects of genetically engineered microorganisms released into the environment. Extrapolation of data to the field, however, requires that the correspondence between microcosm and field is known. Microbial trophic interactions within the microbial...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF00172636
更新日期：1992-06-01 00:00:00
abstract：:We studied the persistence of Bacillus thuringiensis serovar israelensis (Bti) in a typical breeding site of the mosquito Ochlerotatus caspius in a particularly sensitive salt marsh ecosystem following two Bti-based larvicidal applications (Vectobac 12AS, 1.95 L/ha). The treated area was composed of four larval biotop...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-005-0247-3
更新日期：2005-11-01 00:00:00
abstract：:Microbiota presumably plays an essential role in inhibiting pathogen colonization and in the maintenance of health in oysters, but limited data exist concerning their different growth phases and conditions. We analyzed the bacterial microbiota composition of two commercial oysters: Crassostrea gigas and Crassostrea co...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-012-0039-5
更新日期：2012-08-01 00:00:00
abstract：:Environmental pollution by plastic debris is estimated on a scale of 100 million metric tons, a portion of which is fragmented into micro- and nanoplastics. These fragments are often colonized by bacterial species in marine environments, possibly contributing to the biodegradation of such materials. However, further i...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-020-01666-8
更新日期：2021-01-03 00:00:00
abstract：:Bacterial disease is a significant issue for larviculture of several species of shellfish, including oysters. One source of bacteria is the seawater used throughout the hatchery. In this study carried out at a commercial oyster hatchery in Tasmania, Australia, the diversity of the bacterial community and its relations...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-013-0183-6
更新日期：2013-08-01 00:00:00
abstract：:The diversity and composition of soil bacterial communities in three topographic sites (summit, foot slope, and lakeshore) from subtropical montane forest ecosystem in Taiwan were examined by using 16S rRNA gene clone library analysis. This locality is temperate, perhumid, and has low soil acidity (pH < 4), which is a...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-009-9574-0
更新日期：2010-02-01 00:00:00
abstract：:Rhizospheric soil samples were taken from Puna native grasses along an altitudinal gradient. Biodiversity of arbuscular mycorrhizal fungi (AMF) and associated bacteria was analyzed considering altitude and grasses photosynthetic pathways (metabolic type C3, C4). Cultivation-dependent approaches were applied to obtain ...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-007-9313-3
更新日期：2008-05-01 00:00:00
abstract：:The growth rate or numerical response of five species of bactivorous ciliates to the abundance ofEnterobacter aerogenes was examined in monoxenic culture. The ciliatesColpidium campylum, C. colpoda, Glaucoma scintillons, G. frontata, andCyclidium glaucoma were isolated from a small pond. Four were grown in shaken cult...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF02015077
更新日期：1977-09-01 00:00:00
abstract：:> Abstract Claims that organisms can be cultured from amber, if substantiated, would be significant contributions to our understanding of the evolution, tenacity, and potential spread of life. Three reports on the isolation of organisms from amber have been published. Cano and Borucki recently reported the isolation o...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s002489900153
更新日期：1999-07-01 00:00:00
abstract：:Growth kinetics of 2Nitrobacter strains (N.w. and L) coexisting in the same soil are studied in batch and continuous culture. Monod's parameters are estimated numerically from experimental data in the case of the batch experiment, and from steady-state equations in the case of the chemostat. In both cases, the 2 strai...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF02011417
更新日期：1984-06-01 00:00:00
