Biochemical and molecular characterization of hemolytic Bacillus licheniformis strains isolated from shrimp and clam aquacultures

2011 ◽  
Vol 5 (14) ◽  
Author(s):  
Nermeen A. ElSersy
Keyword(s):  
Molecular Characterization ◽  
Bacillus Licheniformis

Biochemical and molecular characterization of a detergent stable alkaline serine-protease from a newly isolated Bacillus licheniformis NH1

2007 ◽  
Vol 40 (4) ◽  
pp. 515-523 ◽  
Author(s):  
Nedra El Hadj-Ali ◽  
Rym Agrebi ◽  
Basma Ghorbel-Frikha ◽  
Alya Sellami-Kamoun ◽  
Safia Kanoun ◽  
...  
Keyword(s):  
Serine Protease ◽  
Molecular Characterization ◽  
Bacillus Licheniformis ◽  
Alkaline Serine Protease

scholarly journals Distribution and molecular characterization of biosurfactant-producing bacteria

2020 ◽  
Vol 21 (9) ◽  
Author(s):  
Nassir Alyousif ◽  
YASIN Y.Y. AL LUAIBI ◽  
WIJDAN HUSSEIN
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Molecular Characterization ◽  
Bacillus Licheniformis ◽  
Rrna Gene ◽  
Bacterial Isolates ◽  
Emulsification Activity ◽  
Emulsification Index ◽  
First Time

Abstract. Alyousif NA, Luaibi YYYA, Hussein W. 2020. Distribution and molecular characterization of biosurfactant-producing bacteria. Biodiversitas 21: 4034-4040. Biosurfactants (BSs) are biological surface-active compounds produced by several microorganisms with many areas of application, as such become an important product in biotechnology and consequence to be used in industries. In recent years, many researchers pay attention to BSs producers' microorganisms. The present study was aimed to isolate, identify, and screening BS producing bacteria from six various sites in two different cities in Iraq. Four samples were collected from four sites in Basrah governorate and the rest two samples from Al-Garraf oilfield in Thi-Qar governorate. A total of 33 different bacterial isolates were obtained, 20 out of the 33 were found to be biosurfactants producing isolates that detected through the emulsification index (E24%), oil spreading test, and emulsification activity. The isolated bacterial strains were more identified by 16S rRNA gene sequencing. The results showed that the biosurfactants producing isolates belonged to genera Bacillus, Pseudomonas, Enterobacter, Staphylococcus, Acinetobacter, and Aerococcus. Bacillus jeotgali and Aerococcus viridans are reporting as biosurfactant producing bacteria for the first time and Bacillus jeotgali is isolated for first time from crude oil of oilfield reservoir in this study in world. Moreover, six bacterial isolates were identified as new strains and deposited at NCBI Genbank under accession numbers MT261834 (Bacillus subtilis strain IRQNWYA3), MT261835 (Bacillus licheniformis strain IRQNWYB4), MT261836 (Pseudomonas stutzeri strain IRQNWYF2), MT261837 (Pseudomonas zhaodongensis strain IRQNWYF3), MT261838 (Pseudomonas sp. IRQNWYF4) and MT261839 (Bacillus licheniformis strain IRQNWYF5). A2 isolate that was identified as Pseudomonas aeruginosa has shown the highest values of emulsification activity and emulsification index (1.678±0.050 absorbance at 540 nm and 56.6% respectively) that show efficient potential of biosurfactant production. Phylogenetic tree was also constructed in this study based on 16S rRNA gene sequences of biosurfactant-producing bacteria to evaluate their close relationship and evolution between them.

Purification, biochemical, and molecular characterization of novel protease from Bacillus licheniformis strain K7A

2018 ◽  
Vol 114 ◽  
pp. 1033-1048 ◽  
Author(s):  
Raziqa Hadjidj ◽  
Abdelmalek Badis ◽  
Sondes Mechri ◽  
Kamel Eddouaouda ◽  
Lamia Khelouia ◽  
...  
Keyword(s):  
Molecular Characterization ◽  
Bacillus Licheniformis

scholarly journals Homologies among three Bacillus licheniformis plasmids and molecular characterization of their replication module

2004 ◽  
Vol 159 (3) ◽  
pp. 211-217
Author(s):  
Carlo Parini ◽  
Simone Guglielmetti ◽  
Diego Mora ◽  
Giovanni Ricci
Keyword(s):  
Molecular Characterization ◽  
Bacillus Licheniformis ◽  
Replication Module

Functional and molecular characterization of a lipopeptide surfactant from the marine sponge-associated eubacteria Bacillus licheniformis NIOT-AMKV06 of Andaman and Nicobar Islands, India

2014 ◽  
Vol 82 (1-2) ◽  
pp. 76-85 ◽  
Author(s):  
Anburajan Lawrance ◽  
Meena Balakrishnan ◽  
Toms Cheriath Joseph ◽  
Dheenan Palaiya Sukumaran ◽  
Vinithkumar Nambali Valsalan ◽  
...  
Keyword(s):  
Molecular Characterization ◽  
Bacillus Licheniformis ◽  
Marine Sponge ◽  
Andaman And Nicobar Islands ◽  
Nicobar Islands

Gene expression and molecular characterization of a chaperone protein HtpG from Bacillus licheniformis

2016 ◽  
Vol 85 ◽  
pp. 179-191 ◽  
Author(s):  
Hui-Fen Lo ◽  
Bo-En Chen ◽  
Min-Guan Lin ◽  
Meng-Chun Chi ◽  
Tzu-Fan Wang ◽  
...  
Keyword(s):  
Gene Expression ◽  
Molecular Characterization ◽  
Bacillus Licheniformis ◽  
Chaperone Protein
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