| Registro completo |
| Provedor de dados: |
Rev. Microbiol.
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| País: |
Brazil
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| Título: |
Effects of high temperature on survival, symbiotic performance and genomic modifications of bean nodulating Rhizobium strains
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| Autores: |
Pinto,Patrícia P.
Raposeiras,Ruy
Macedo,Andrea M.
Seldin,Lucy
Paiva,Edilson
Sá,Nadja M.H.
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| Data: |
1998-10-01
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| Ano: |
1998
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| Palavras-chave: |
Bean nodulating Rhizobium strains
High temperatures
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| Resumo: |
High temperatures can affect the survival, establishment and symbiotic properties of Rhizobium strains. Bean nodulating Rhizobium strains are considered particularly sensitive because on this strains genetic recombinations and/or deletions occur frequently, thus compromising the use of these bacteria as inoculants. In this study R. tropici and R. leguminosarum bv. phaseoli strains isolated from Cerrado soils were exposed to thermal stress and the strains growth, survival and symbiotic relationships as well as alterations in their genotypic and phenotypic characteristics were analyzed. After successive thermal shocks at 45ºC for four hours, survival capacity appeared to be strain-specific, independent of thermo-tolerance and was more apparent in R. tropici strains. Certain R. leguminosarum bv. phaseoli strains had significant alterations in plant dry weight and DNA patterns obtained by AP-PCR method. R. tropici strains (with the exception of FJ2.21) were more stable than R. leguminosarum bv. phaseoli strains because no significant phenotypic alterations were observed following thermal treatments and they maintained their original genotypic pattern after inoculation in plants.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141998000400012
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| Editor: |
Sociedade Brasileira de Microbiologia
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| Relação: |
10.1590/S0001-37141998000400012
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| Formato: |
text/html
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| Fonte: |
Revista de Microbiologia v.29 n.4 1998
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| Direitos: |
info:eu-repo/semantics/openAccess
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