2012
DOI: 10.1590/s1517-83822012000400045
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Abstract: This study evaluated 26 pigeonpea rhizobial isolates according to their cultural characteristics, intrinsic antibiotic resistance, salt and temperature tolerance, carbon source utilization and amylolytic activity. The cultural characterization showed that the majority of them presented the ability to acidify the YMA. Among the 27 isolates evaluated, 25 were able to grow when incubated at 42° C and 11 showed tolerance to 3% (w/v) of NaCl in YMA medium. The patterns of carbon sources utilization was very diverse… Show more

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Cited by 11 publications
(27 citation statements)
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References 14 publications
(27 reference statements)
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“…Combining all physiological results, the data suggest that the isolates are able to persist in the soil or in the desiccated tissues of t. spicatus due to their tolerance to harsh environments and metabolic versatility in regard to the ability to metabolize different C sources and tolerance to antibiotics that may be produced by other soil micro-organisms (Fernandes Júnior et al, 2012b;Jha et al, 2012).…”
Section: Discussionmentioning
confidence: 76%
“…In spite of the great number of isolates that presented high or intermediate resistance to chloramphenicol (17 isolates in all), this is a very uncommon characteristic for pigeonpea nodulating rhizobia (Anand and Dogra, 1991;Fernandes et al, 2003;Fernandes Jr. et al, 2012). The isolates also showed a generally low IAR for kanamycin, which is a very common characteristic for tropical rhizobia.…”
Section: Discussionmentioning
confidence: 99%
“…The slow and fast growing pigeonpea rhizobia present great genetic and metabolic diversity and are likely to have new species among the culture collections worldwide (Ramsubhag et al, 2002;Fernandes Jr. et al, 2012). In addition to being efficient in fixing nitrogen in field conditions, pigeonpea rhizobia also present other biotechnological applications, such as biopolymer production and enzymatic activity (Fernandes Jr. et al, 2010.…”
Section: Introductionmentioning
confidence: 99%
“…To exploit the biological nitrogen fixation (BNF) potential of this crop, the selection and evaluation of new rhizobial strains from different areas where pigeon pea is cropped must be carried out. The slow and fast growing pigeon pea rhizobia present great genetic and metabolic diversity and are likely to have new species among the culture collections worldwide (Fernandes et al, 2012;Ramsubhag et al, 2002). In addition to being efficient in fixing nitrogen in field conditions, pigeon pea rhizobia also present other biotechnological applications, such as biopolymer production and enzymatic activity (Fernandes et al, 2012;Júnior et al, 2011).…”
Section: Introductionmentioning
confidence: 99%
“…The slow and fast growing pigeon pea rhizobia present great genetic and metabolic diversity and are likely to have new species among the culture collections worldwide (Fernandes et al, 2012;Ramsubhag et al, 2002). In addition to being efficient in fixing nitrogen in field conditions, pigeon pea rhizobia also present other biotechnological applications, such as biopolymer production and enzymatic activity (Fernandes et al, 2012;Júnior et al, 2011). Nevertheless, it should be noted that for Ethiopia, information is scarce about indigenous rhizobia that nodulate grain legumes such as pigeon pea.…”
Section: Introductionmentioning
confidence: 99%