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Characterization of Biofilm Forming Marine Pseudoalteromonas spp 被引量:1
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作者 Samia S.Abouelkheir Eman A.Abdelghany +1 位作者 Hanan A.Ghozlan Soraya A.Sabry 《Journal of Marine Science》 2020年第1期31-37,共7页
Biofilm forming bacteria are omnipresent in the marine environment.Pseudoalteromonas is one of the largest within the γ-proteobacteria class,and a member of marine bacteria.Species of Pseudoalteromonas are generally ... Biofilm forming bacteria are omnipresent in the marine environment.Pseudoalteromonas is one of the largest within the γ-proteobacteria class,and a member of marine bacteria.Species of Pseudoalteromonas are generally found in association with marine eukaryotes.In this work,we present the isolation and characterization of two strains forming biofilm on rock surface and associated with marine sponge.They were identified using 16SrDNA as Pseudoalteromonas prydzensis alex,and Pseudoalteromonas sp.alex.They showed the highest titer in biofilm formation quantified using the test tube method using crystal violet. 展开更多
关键词 BIOFILM Pseudoalteromonas prydzensis alex Pseudoalteromonas sp.alex Molecular identification Marine rock Marine sponge
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Biofilm Formation by Marine Cobetia marina alex and Pseudoaltero­monas spp: Development and Detection of Quorum Sensing N-Acyl Homoserine Lactones (AHLs) Molecules 被引量:2
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作者 Samia S.Abouelkheir Eman A.Abdelghany +1 位作者 Soraya A.Sabry Hanan A.Ghozlan 《Journal of Marine Science》 2021年第3期1-12,共12页
Surfaces submerged in seawater are colonized by various microorganisms,resulting in the formation of heterogenic marine biofilms.This work aims to evaluate the biofilm formation by Cobetia marina alex and doing a comp... Surfaces submerged in seawater are colonized by various microorganisms,resulting in the formation of heterogenic marine biofilms.This work aims to evaluate the biofilm formation by Cobetia marina alex and doing a comparative study between this promising strain with the two bacterial strains isolated previously from the Mediterranean seawater,Alexandria,Egypt.Three strains;Cobetia marina alex,Pseudoalteromonas sp.alex,and Pseudoalteromonas prydzensis alex were screened for biofilm formation using the crystal violet(CV)quantification method in a single culture.The values of biofilm formed were OD600=3.0,2.7,and 2.6,respectively leading to their selection for further evaluation.However,factors affecting biofilm formation by C.marina alex were investigated.Biofilm formation was evaluated in single and multispecies consortia.Synergistic and antagonistic interactions proved in this work lead to the belief that these bacteria have the capability to produce some interesting signal molecules N-acyl Homoserine Lactones(AHLs). 展开更多
关键词 Quorum sensing BIOFILM Pseudoalteromonas prydzensis alex Pseudoalteromonas sp.alex Cobetia marina alex Extracellular polymeric substance(EPS)
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