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| Fracetto,Giselle G. M.; Azevedo,Lucas C.B.; Fracetto,Felipe J. C.; Andreote,Fernando D.; Lambais,Marcio R.; Pfenning,Ludwig H.. |
| Considered as one of the most biodiverse biomes, the Amazon has a featured role in the discovery of new species of plants, animals and microorganisms, which may be important for the functionality of different ecosystems. However, studies on the impacts resulted from changes in the Amazon land use on microbial communities and their functions are still limited. In this context, the soil fungal diversity can act as an important indicator of environmental stress caused by land use of the Amazon. This study describes changes in soil fungal communities caused by different systems of land use (primary forest, secondary forest, agroforestry, agriculture and pasture). Communities were observed in each of the areas using denaturing gradient gel electrophoresis... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: DGGE; 18S rRNA; Fungal diversity; Soil biology. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000200001 |
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| Leite,Maria C. B. S.; Farias,Andreza R. B. de; Freire,Fernando J.; Andreote,Fernando D.; Kuklinsky-Sobral,Júlia; Freire,Maria B. G. S.. |
| ABSTRACT The selection of salinity tolerant bacteria may provide greater promotion of plant growth in soils with salt stress. This study aimed to isolate and select bacterial isolates of sugarcane, tolerant to salinity and plant growth promoters, and assess genetic diversity. To do so, endophytic root and rhizosphere of sugarcane, were isolated in culture medium with and without NaCl. The bacterial population density, the potential for biological nitrogen fixation (BNF), production of indole acetic acid (IAA), inorganic phosphate solubilization and quorum sensing molecule production were evaluated. Furthermore, the genetic diversity was assessed by Denaturing Gradient Gel Electrophoresis (DGGE) of nifH. Salinity tolerance tests were also conducted. There... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Endophytic; Genetic variability; Plant growth promotion. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662014001300073 |
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