Isolation of acid tolerant peanut (Arachis hypogaea L.) rhizobia from soils of central Argentina

TAURIAN, T., FABRA, A., AGUILAR, O.M.

Nitrogen Fixation: From Molecules to Crop Productivity

Kluwer Academic Publishers

Lugar: Dordrecht; Año: 2000; p. 95 - 95

<!-- /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin:0cm; margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman"; mso-ansi-language:ES; mso-fareast-language:ES;} @page Section1 {size:595.3pt 841.9pt; margin:70.85pt 3.0cm 70.85pt 3.0cm; mso-header-margin:35.4pt; mso-footer-margin:35.4pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> Soil acidity may significantly reduce the symbiotic nitrogen fixation limiting Rhizobium survival and persistence in soils and reducing noulation. Approximately 63% of the soil samples had pH belows 6.5. A 70% of the isolates showed the 390 bp band of nifD-PCR and 93.5% of them were fast grower. We observed that there were no relationship between soil pH and the acid tolerance of the rhizobia obtained.