Peanut nodulation kinetics in response to low pH.
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.
Angelini
Jorge
J
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.
Taurian
Tania
T
Morgante
Carolina
C
Ibáñez
Fernando
F
Castro
Stella
S
Fabra
Adriana
A
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
D012987:Soil; D002118:Calcium