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| SÁBER, M. L.; ANDREOTE, F. D.; KAVAMURA, V. N.; FRIGHETTO, R. T. S.; TAKETANI, R. G.; MELO, I. S. de. |
| Abstract: The impact of ultraviolet-B (UV-B) radiation on the culturable and unculturable bacterial communities were studied in field experiments using soybean plants grown under increased UV-B (UV-B+), negative control (UV-B-) and solar UV-B. Sampling of leaves exposed to UV-B was performed in different developmental stages of the plant. The data obtained demonstrate that UV-B radiation did not alter the culturable and unculturable bacterial community. In contrast, culture independent analysis revealed major differences between cultivars for the stage of development (cultivation time) of the plants. Regarding the bacterial communities of the phyllosphere, it is possible to observe a similar behavior of the analyzed groups (Bacteria, ?-Proteobacteria, and... |
| Tipo: Separatas |
Palavras-chave: Ultraviolet-B; Pigmented bacteria; Survival; Radiação ultravioleta.; Bactéria; Soja.; Soybeans; Ultraviolet radiation; Phyllosphere. |
| Ano: 2014 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1008000 |
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| Andreote,Fernando Dini; Gumiere,Thiago; Durrer,Ademir. |
| A plethora of microbial cells is present in every gram of soil, and microbes are found extensively in plant and animal tissues. The mechanisms governed by microorganisms in the regulation of physiological processes of their hosts have been extensively studied in the light of recent findings on microbiomes. In plants, the components of these microbiomes may form distinct communities, such as those inhabiting the plant rhizosphere, the endosphere and the phyllosphere. In each of these niches, the "microbial tissue" is established by, and responds to, specific selective pressures. Although there is no clear picture of the overall role of the plant microbiome, there is substantial evidence that these communities are involved in disease control, enhance... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Microbial communities; Rhizosphere; Endophytes; Phyllosphere. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162014000600013 |
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| DIAS, A. C. F.; TAKETANI, R. G.; ANDREOTE, F. D.; LUVIZOTTO, D. M.; SILVA, J. L. da; NASCIMENTO, R. dos S.; MELO, I. S. de. |
| ABSTRACT: Mangrove forests encompass a group of trees species that inhabit the intertidal zones, where soil is characterized by the high salinity and low availability of oxygen. The phyllosphere of these trees represent the habitat provided on the aboveground parts of plants, supporting in a global scale, a large and complex microbial community. The structure of phyllosphere communities reflects immigration, survival and growth of microbial colonizers, which is influenced by numerous environmental factors in addition to leaf physical and chemical properties. Here, a combination of culture-base methods with PCR-DGGE was applied to test whether local or plant specific factors shape the bacterial community of the phyllosphere from three plant species... |
| Tipo: Separatas |
Palavras-chave: Culture-independent profiling; Plant genotype; Surface leaves; Mangue; Bactéria; Planta; Phyllosphere; Mangrove forests. |
| Ano: 2012 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/942708 |
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| CASTELIANI, A. G. B.; KAVAMURA, V. N.; ZUCCHI, T. D.; SÁBER, M. L.; NASCIMENTO, R. dos S.; FRIGHETTO, R. T. S.; TAKETANI, R. G.; MELO, I. S. de. |
| Abstract: The increase on the worldwide influx of solar ultraviolet radiation (UV-B) has inflicted a considerable challenge, due to its deleterious effects to live beings and pose a special threat to phyllosphere communities. However, UV-B influence on epiphytic yeasts associated with agricultural crops remains limited. Main aim of the present study was to determine the effect of ultraviolet-B radiation on the epiphytic yeast populations associated with strawberry under field conditions. Thus, strawberries (Fragaria x ananassa Duchesne cv. Oso Grande) were grown under three different treatments: a) environmental UV-B, b) enhanced UV-B and c) decreased UV-B; thereafter, their yeast epiphytic populations were analyzed by T-RFLP prior to yeast isolation,... |
| Tipo: Separatas |
Palavras-chave: T-RFLP; Field conditions; Leaf surface; Levedo; Morango; Raio ultravioleta; Clima; Strawberries; Yeasts; Phyllosphere; Ultraviolet radiation; Global warming. |
| Ano: 2014 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1000403 |
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