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Isolation and enzyme bioprospection of endophytic bacteria associated with plants of Brazilian mangrove ecosystem.

Castro RA, Quecine MC, Lacava PT, Batista BD, Luvizotto DM, Marcon J, Ferreira A, Melo IS, Azevedo JL - Springerplus (2014)

Bottom Line: Here, we isolated endophytic microorganisms from two mangrove species, Rhizophora mangle and Avicennia nitida, that are found in streams in two mangrove systems in Bertioga and Cananéia, Brazil.However, other common endophytic genera such as Pantoea, Curtobacterium and Enterobacter were also found.This work contributes to our knowledge of the microorganisms and enzymes present in mangrove ecosystems.

View Article: PubMed Central - PubMed

Affiliation: Center for Nuclear Energy in Agriculture (CENA), University of São Paulo, Piracicaba, SP Brazil.

ABSTRACT
The mangrove ecosystem is a coastal tropical biome located in the transition zone between land and sea that is characterized by periodic flooding, which confers unique and specific environmental conditions on this biome. In these ecosystems, the vegetation is dominated by a particular group of plant species that provide a unique environment harboring diverse groups of microorganisms, including the endophytic microorganisms that are the focus of this study. Because of their intimate association with plants, endophytic microorganisms could be explored for biotechnologically significant products, such as enzymes, proteins, antibiotics and others. Here, we isolated endophytic microorganisms from two mangrove species, Rhizophora mangle and Avicennia nitida, that are found in streams in two mangrove systems in Bertioga and Cananéia, Brazil. Bacillus was the most frequently isolated genus, comprising 42% of the species isolated from Cananéia and 28% of the species from Bertioga. However, other common endophytic genera such as Pantoea, Curtobacterium and Enterobacter were also found. After identifying the isolates, the bacterial communities were evaluated for enzyme production. Protease activity was observed in 75% of the isolates, while endoglucanase activity occurred in 62% of the isolates. Bacillus showed the highest activity rates for amylase and esterase and endoglucanase. To our knowledge, this is the first reported diversity analysis performed on endophytic bacteria obtained from the branches of mangrove trees and the first overview of the specific enzymes produced by different bacterial genera. This work contributes to our knowledge of the microorganisms and enzymes present in mangrove ecosystems.

No MeSH data available.


Related in: MedlinePlus

Principal component analysis (PCA) based on the molecular identification of bacterial isolates from Cananéia–Avicennia nitida(C/A), Cananéia–Rhizophora mangle(C/R), Bertioga–Avicennia nitida(B/A), and Bertioga–Rhizophora mangle(B/R). The values on the axes indicate the variance explained.
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Fig1: Principal component analysis (PCA) based on the molecular identification of bacterial isolates from Cananéia–Avicennia nitida(C/A), Cananéia–Rhizophora mangle(C/R), Bertioga–Avicennia nitida(B/A), and Bertioga–Rhizophora mangle(B/R). The values on the axes indicate the variance explained.

Mentions: Despite the similar values for the Shannon diversity indices, principal component analysis clearly demonstrated that the bacterial communities are specific according to locality and plant sample (Figure 1).Table 3


Isolation and enzyme bioprospection of endophytic bacteria associated with plants of Brazilian mangrove ecosystem.

Castro RA, Quecine MC, Lacava PT, Batista BD, Luvizotto DM, Marcon J, Ferreira A, Melo IS, Azevedo JL - Springerplus (2014)

Principal component analysis (PCA) based on the molecular identification of bacterial isolates from Cananéia–Avicennia nitida(C/A), Cananéia–Rhizophora mangle(C/R), Bertioga–Avicennia nitida(B/A), and Bertioga–Rhizophora mangle(B/R). The values on the axes indicate the variance explained.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4125609&req=5

Fig1: Principal component analysis (PCA) based on the molecular identification of bacterial isolates from Cananéia–Avicennia nitida(C/A), Cananéia–Rhizophora mangle(C/R), Bertioga–Avicennia nitida(B/A), and Bertioga–Rhizophora mangle(B/R). The values on the axes indicate the variance explained.
Mentions: Despite the similar values for the Shannon diversity indices, principal component analysis clearly demonstrated that the bacterial communities are specific according to locality and plant sample (Figure 1).Table 3

Bottom Line: Here, we isolated endophytic microorganisms from two mangrove species, Rhizophora mangle and Avicennia nitida, that are found in streams in two mangrove systems in Bertioga and Cananéia, Brazil.However, other common endophytic genera such as Pantoea, Curtobacterium and Enterobacter were also found.This work contributes to our knowledge of the microorganisms and enzymes present in mangrove ecosystems.

View Article: PubMed Central - PubMed

Affiliation: Center for Nuclear Energy in Agriculture (CENA), University of São Paulo, Piracicaba, SP Brazil.

ABSTRACT
The mangrove ecosystem is a coastal tropical biome located in the transition zone between land and sea that is characterized by periodic flooding, which confers unique and specific environmental conditions on this biome. In these ecosystems, the vegetation is dominated by a particular group of plant species that provide a unique environment harboring diverse groups of microorganisms, including the endophytic microorganisms that are the focus of this study. Because of their intimate association with plants, endophytic microorganisms could be explored for biotechnologically significant products, such as enzymes, proteins, antibiotics and others. Here, we isolated endophytic microorganisms from two mangrove species, Rhizophora mangle and Avicennia nitida, that are found in streams in two mangrove systems in Bertioga and Cananéia, Brazil. Bacillus was the most frequently isolated genus, comprising 42% of the species isolated from Cananéia and 28% of the species from Bertioga. However, other common endophytic genera such as Pantoea, Curtobacterium and Enterobacter were also found. After identifying the isolates, the bacterial communities were evaluated for enzyme production. Protease activity was observed in 75% of the isolates, while endoglucanase activity occurred in 62% of the isolates. Bacillus showed the highest activity rates for amylase and esterase and endoglucanase. To our knowledge, this is the first reported diversity analysis performed on endophytic bacteria obtained from the branches of mangrove trees and the first overview of the specific enzymes produced by different bacterial genera. This work contributes to our knowledge of the microorganisms and enzymes present in mangrove ecosystems.

No MeSH data available.


Related in: MedlinePlus