Symbiotic potential and survival of native rhizobia kept on different carriers
| Autor: | Víctor Manuel Ruíz-Valdiviezo, Federico Antonio Gutiérrez-Miceli, Luc Dendooven, Lucía María Cristina Ventura Canseco, Reiner Rincón-Rosales, Luis Antonio Castillo Suárez |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
lcsh:QR1-502
Sinorhizobium rhizobia Plant Root Nodulation Microbiology lcsh:Microbiology Rhizobia Soil carrier Rhizobium etli Yeasts Botany Aluminum Oxide Environmental Microbiology Media Technology Mannitol nodulation Cellulose Fertilizers Symbiosis Microbial inoculant Soil Microbiology Legume Phaseolus biology food and beverages Starch Silicon Dioxide biology.organism_classification Horticulture inoculants nitrogen fixation Carboxymethylcellulose Sodium Rhizosphere Nitrogen fixation Rhizobium |
| Zdroj: | Brazilian Journal of Microbiology v.46 n.3 2015 Brazilian Journal of Microbiology Sociedade Brasileira de Microbiologia (SBM) instacron:SBM Brazilian Journal of Microbiology, Volume: 46, Issue: 3, Pages: 735-742, Published: SEP 2015 Brazilian Journal of Microbiology, Vol 46, Iss 3, Pp 735-742 (2015) |
| Popis: | Native rhizobia are ideal for use as commercial legume inoculants. The characteristics of the carrier used to store the inoculants are important for the survival and symbiotic potential of the rhizobia. The objective of this study was to investigate the effects of peat (PEAT), perlite sugarcane bagasse (PSB), carboxymethyl cellulose plus starch (CMCS), and yeast extract mannitol supplemented with mannitol (YEMM) on the survival, nodulation potential and N2 fixation capacity of the native strains Sinorhizobium mexicanum ITTG R7T and Rhizobium calliandrae LBP2-1T and of the reference strain Rhizobium etli CFN42T. A factorial design (4 × 3) with four repetitions was used to determine the symbiotic potential of the rhizobial strains. The survival of the strains was higher for PEAT (46% for strain LBP2-1T, 167% for strain CFN42T and 219% for strain ITTG R7T) than for the other carriers after 240 days, except for CFN42T kept on CMCS (225%). All the strains kept on the different carriers effectively nodulated common bean, with the lowest number of nodules found (5 nodules) when CFN42T was kept on CMCS and with the highest number of nodules found (28 nodules) when ITTG R7T was kept on PSB. The nitrogenase activity was the highest for ITTG R7T kept on PEAT (4911 μmol C2H4 per fresh weight nodule h−1); however, no activity was found when the strains were kept on YEMM. Thus, the survival and symbiotic potential of the rhizobia depended on the carrier used to store them. |
| Databáze: | OpenAIRE |
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