title: Peanut nodulation kinetics in response to low pH.
abstract: In this work, the peanut nodulation kinetics by acid-sensitive and tolerant isolates under acid stress condition was analyzed. The results demonstrated that the acid pH produced a decrease in the number of nodules formed only when peanut plants were inoculated with acid-sensitive isolates but increased steadily by the addition of 10 mM Ca2+, reaching higher values than those obtained at pH 7.0. On the contrary, the peanut nodulation by acid-tolerant isolates was not affected by this stressing condition. These data suggest that acid-tolerant isolates could be used as a potential source of strains for preparing highly effective inoculants for peanut plants growing in acid soils.
authors.affiliation: Departamento de Ciencias Naturales, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Ruta 36 Km 601, 5800 Río Cuarto, Córdoba, Argentina.
authors.forename: Jorge
authors.initials: J
authors.lastname: Angelini
authors.forename: Tania
authors.initials: T
authors.lastname: Taurian
authors.forename: Carolina
authors.initials: C
authors.lastname: Morgante
authors.forename: Fernando
authors.initials: F
authors.lastname: Ibáñez
authors.forename: Stella
authors.initials: S
authors.lastname: Castro
authors.forename: Adriana
authors.initials: A
authors.lastname: Fabra
mesh_terms: D010367:Arachis / Q000378:metabolism* / Q000382:microbiology*; D002118:Calcium / Q000378:metabolism; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D018517:Plant Roots / Q000378:metabolism / Q000382:microbiology; D012230:Rhizobiaceae / Q000502:physiology; D012987:Soil; D013559:Symbiosis
chemical_list: D012987:Soil; D002118:Calcium