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Detection and characterization of chitinases in metagenomics libraries from mangrove located in the State of São Paulo

Grant number: 11/18740-5
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): January 01, 2012
Effective date (End): September 30, 2015
Field of knowledge:Biological Sciences - Ecology
Principal Investigator:João Lúcio de Azevedo
Grantee:Joelma Marcon
Home Institution: Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil
Associated scholarship(s):13/11263-2 - Detection and annotation of chitinases in metagenomics libraries from mangrove located in the State of São Paulo, BE.EP.PD

Abstract

The mangrove ecosystem is a coastal biome, located in the interface between the land and the sea, being characterized by the tidal regime, which confer unique characteristic to this system. The mangroves have high amounts of organic matter accumulated, such as cellulose, released in mangroves from plants, and chitin, from the decomposition of crustaceous. The main via for the nutrient cycling in this environment is based on the microbial activity, who promote the decomposition of the organic matter. Hence, it is possible to say that the microbial communities preset in this ecosystem compose the basis of the food chain, making this place very dependent and interconnected with the microbial activity. In bacteria, the chitinases engage diverse functions, as for example, the processing and the digestion of monomers of ß-(1,4) 2-acetoamido-2-deoxi -D-glucose (N-acetilglucosamina or GlcNAc), enhancing the availability of nutrients for the microbial metabolism. However, these enzymes also participate actively in the development of certain fungi, which have chitin composing their cell walls. Ecologically, the chitinases from bacteria have an essential role in the nutrient cycling in marine environments, where the chitin represent a great value within the organic matter content. In this context, it is suggested that mangroves harbor an unique diversity of chitinolytic enzymes, which are able to act under the prevailing unique environmental conditions of this ecosystem. Then, the objective of this project is the assessment of genes which codify for chitinases, and the further characterization of these genes, in metagenomic libraries from genomes. It would allow a wider view of the genomic organization, sinteny and genes for chitinases in mangroves.

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
BONATELLI, M. L.; TSUI, S.; MARCON, J.; BATISTA, B. D.; KITAJIMA, E. W.; PEREIRA, J. O.; AZEVEDO, J. L.; QUECINE, M. C. ANTAGONISTIC ACTIVITY OF FUNGI FROM ANTHRACNOSE LESIONS ON PAULLINIA CUPANA AGAINST COLLETOTRICHUM sp.. JOURNAL OF PLANT PATHOLOGY, v. 98, n. 2, p. 197-205, 2016. Web of Science Citations: 3.
CASTRO, RENATA A.; QUECINE, MARIA CAROLINA; LACAVA, PAULO T.; BATISTA, BRUNA D.; LUVIZOTTO, DANICE M.; MARCON, JOELMA; FERREIRA, ANDERSON; MELO, ITAMAR S.; AZEVEDO, JOAO L. Isolation and enzyme bioprospection of endophytic bacteria associated with plants of Brazilian mangrove ecosystem. SPRINGERPLUS, v. 3, JUL 28 2014. Web of Science Citations: 25.
SIA, ELIANDRA DE FREITAS; MARCON, JOELMA; LUVIZOTTO, DANICE MAZZER; QUECINE, MARIA CAROLINA; TSUI, SARINA; PEREIRA, JOSE ODAIR; PIZZIRANI-KLEINER, ALINE APARECIDA; AZEVEDO, JOAO LUCIO. Endophytic fungi from the Amazonian plant Paullinia cupana and from Olea europaea isolated using cassava as an alternative starch media source. SPRINGERPLUS, v. 2, 2013. Web of Science Citations: 5.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.