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| Author(s): |
Sarah Pigato Canova
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | São Paulo. |
| Institution: | Universidade de São Paulo (USP). Instituto de Ciências Biomédicas (ICB/SDI) |
| Defense date: | 2009-04-07 |
| Examining board members: |
Itamar Soares de Melo;
Joao Lucio de Azevedo;
Ricardo Harakava
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| Advisor: | Itamar Soares de Melo |
| Abstract | |
Mangroves are coastal ecosystems which occur in the areas of transition between marine and terrestrial environments throughout the tropical and subtropical regions, suffering direct tide influence. The diverse microbial communities are important to the nutrient cycling occurrence and consequently to the maintenance of these environments fauna and flora biodiversity. The Actinobacteria are a heterogeneous group of filamentous bacteria that naturally inhabit the soil. They can easily adapt to different environmental conditions, producing antibiotics and colonizing the rhizosphere and plants internal tissues. This study aims were: to allow the assessment of the diversity of the diversity of rhizosphere Actinobacteria isolated from mangroves located in Cananeia and Bertioga, cities under the jurisdiction of Sao Paulo State; to evaluate the production of antifungal secondary metabolites of these microorganisms; to analyze the chemical profile of organic extracts of Actionobacteria by mass spectrometry, followed by the evaluation of the chemical components of theses extracts through thin-layer chromatography and preparative column for their separation. After this process minimum inhibitory concentration of the active fractions of the bioassays were determined. (AU) | |