Valuable processes and products from marine intertidal microbial communities

Ortega-Morales, Benjamín Otto; Chan-Bacab, Manuel Jesús; Rosa-García, Susana De la; Camacho-Chab, Juan Carlos

doi:10.1016/j.copbio.2010.02.007

Cited by 44 publications

(20 citation statements)

References 59 publications

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“…However, most of the genera registered in Guizelini (2002) is coincident with the present research. The microorganism's communities that are present in regions of intertidal marine environments perform processes that contribute to the functioning of coastal areas, such as the cycling of carbon and also the transfer of metal and organic pollutant removal for trophic levels higher (Ortega-Morales et al, 2010). Thus, the correspondence analysis revealed that seawater samples in different areas were affected by environmental parameters (Dong et al, 2014).…”

Section: Isolation and Identification Of Filamentous Fungi And Actinomentioning

confidence: 99%

“…By the fact of them are exposed to high salinity, temperature, U.V. radiation, and low nutrient levels, they have physiological adaptations that can promote the production of toxins and enzymes, which enable their survival in this hostile environment (Ortega-Morales et al, 2010). Because of these characteristics, this microorganisms may be promising agents for the control of agricultural pests (Lira et al, 2006;Alvarez et al, 2017), nematicidal and phytohormone (Rashad et al, 2015), antifungal and antibiotic activity (Porsani et al, 2013;Dalitz et al, 2016).…”

Section: Isolation and Identification Of Filamentous Fungi And Actinomentioning

confidence: 99%

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First Record of Fungi and Actinobacteria Isolated from the Marine Sediment Collected in the Intertidal Region from an Island Located in the South of Brazil

Porsani¹,

Kolm²,

Pimentel³

2017

Int.J.Curr.Res.Aca.Rev.

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Article InfoMel Island is considered a Natural Historic Site of Paraná State, South Brazil, with approximately 2,760 ha, of which about 95% are protected as the Ecological Station and State Park. This is the first record that evaluates the presence of actinobacteria and fungi in this environment. This research studied the spatial variability of fungi and actinobacteria in the surface of fifteen intertidal stations in Mel Island, Brazil. The number of organisms was compared in relation to physical-chemical factors. We isolated 332 microorganisms. The results showed significance in the temperature of the sediments related to the time of the day on which sample was collected. There were significant differences in the amount of cultivated fungi and actinobacteria. The Principal Component Analysis (PCA) showed that there was an inverse correlation between the number of microorganisms and the temperature. The grain size and organic matter sediment did not interfere in the amount of fungi and actinobacteria. The results show the expansion of the knowledge about the microbiology in the regions between tides furthermore, this microorganisms collected from marine sediment can hold great promise as biological control agents and they might show ability to produce undescribed bioactive compounds yet.

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Section: Isolation and Identification Of Filamentous Fungi And Actinomentioning

confidence: 99%

Section: Isolation and Identification Of Filamentous Fungi And Actinomentioning

confidence: 99%

First Record of Fungi and Actinobacteria Isolated from the Marine Sediment Collected in the Intertidal Region from an Island Located in the South of Brazil

Porsani¹,

Kolm²,

Pimentel³

2017

Int.J.Curr.Res.Aca.Rev.

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“…It comprises rocky platforms, sandy beaches, mudflats, estuaries, salt marshes, mangrove forests, certain coral reefs and human-made infrastructures. Intertidal microbial communities often occur as biofilms which are high-density attached communities embedded in extracellular biopolymer matrices [1]. The microbial biofilm is a common adaptation of natural bacteria and other microorganisms.…”

Section: Introductionmentioning

confidence: 99%

Cellulase and xylanase activity in relation to biofilm formation by two intertidal filamentous fungi in a novel polymethylmethacrylate conico-cylindrical flask

Mitra

Banerjee

Gachhui

et al. 2011

Bioprocess Biosyst Eng

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A polymethylmethacrylate (PMMA) conico-cylindrical flask (CCF) with an inner arrangement consisting of eight equidistantly spaced rectangular strips mounted radially on a circular disk to provide additional surface area for fungal attachment was employed for production of cellulase by Chaetomium crispatum and xylanase by Gliocladium viride. The design allowed comparison of production between CCFs with hydrophobic surface (PMMA-CCF), hydrophilic glass surface (GS-CCF) and 500-ml Erlenmeyer flask (EF). Compared with the EF, endo-β-1,4-glucanase and FPase (filter paper degradation) activities increased from 0.044 to 0.156 and from 0.008 to 0.021 IU/ml, respectively, in the PMMA-CCF, while growth of C. crispatum was higher by at most 1.38-fold compared with the other vessels. Xylanase production in the EF was at most 5.08-fold higher and growth of G. viride was at most 1.52-fold higher compared with the other vessels. Temporal pattern of biofilm development based on two-channel fluorescence detection of extracellular polymeric substances (EPSs) and whole cells in a confocal laser scanning microscope demonstrated increase by 100% in biovolume, 25% in thickness and 62.5% both in substratum coverage and total spreading of C. crispatum biofilm in PMMA-CCF over 6 days. Biovolume of G. viride biofilm in GS-CCF increased by 150% over 4 days while that in PMMA-CCF enhanced by 200% over 2 days. Biofilm thickness in PMMA-CCF was 44% higher compared with GS-CCF and increased by 175% over 2 days. Substratum coverage was 38% higher in GS-CCF compared with PMMA-CCF. Thus, reactor surface area and property, shear forces and biofilm formation influenced enzyme production.

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“…It is often stated that EPS represent up to 90% of the total organic matter comprising biofilm or microbial aggregate biomass [12]; EPS are also excreted into the surrounding medium, contributing to the pool of dissolved organic matter (DOM) or as precursors of TEP [18,19]. EPS play a key role in primary productivity, trophic linkage and mobilization of pollutants mediated by marine microbial communities [3,11].…”

Section: Introductionmentioning

confidence: 99%

“…Coasts include rocky shores, sandy beaches, mudflats, saltmarshes, mangrove forests, deltas and coral reefs [2]. These regions provide goods and services including recognizable mineral and oil resources, construction materials, human and animal food, recreation and living sites, energy sources and biotechnological products, among others [1,3], along with less tangible benefits including ecosystem services such as erosion and flood control, carbon sequestration and wildlife habitat [4]. Production of food for human populations derived from fishing activity is one of the most important services provided by coastal zones.…”

Section: Introductionmentioning

confidence: 99%

Implications of Extracellular Polymeric Substance Matrices of Microbial Habitats Associated with Coastal Aquaculture Systems

Camacho-Chab

Lango-Reynoso

Castañeda-Chávez

et al. 2016

Water

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Coastal zones support fisheries that provide food for humans and feed for animals. The decline of fisheries worldwide has fostered the development of aquaculture. Recent research has shown that extracellular polymeric substances (EPS) synthesized by microorganisms contribute to sustainable aquaculture production, providing feed to the cultured species, removing waste and contributing to the hygiene of closed systems. As ubiquitous components of coastal microbial habitats at the air-seawater and seawater-sediment interfaces as well as of biofilms and microbial aggregates, EPS mediate deleterious processes that affect the performance and productivity of aquaculture facilities, including biofouling of marine cages, bioaccumulation and transport of pollutants. These biomolecules may also contribute to the persistence of harmful algal blooms (HABs) and their impact on cultured species. EPS may also exert a positive influence on aquaculture activity by enhancing the settling of aquaculturally valuable larvae and treating wastes in bioflocculation processes. EPS display properties that may have biotechnological applications in the aquaculture industry as antiviral agents and immunostimulants and as a novel source of antifouling bioproducts.

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Valuable processes and products from marine intertidal microbial communities

Cited by 44 publications

References 59 publications

First Record of Fungi and Actinobacteria Isolated from the Marine Sediment Collected in the Intertidal Region from an Island Located in the South of Brazil

First Record of Fungi and Actinobacteria Isolated from the Marine Sediment Collected in the Intertidal Region from an Island Located in the South of Brazil

Cellulase and xylanase activity in relation to biofilm formation by two intertidal filamentous fungi in a novel polymethylmethacrylate conico-cylindrical flask

Implications of Extracellular Polymeric Substance Matrices of Microbial Habitats Associated with Coastal Aquaculture Systems

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