Peanut nodulation kinetics in response to low pH

ANGELINI, JORGE; TAURIAN, TANIA; MORGANTE, CAROLINA; IBAÑEZ, FERNANDO; CASTRO, STELLA; FABRA, ADRIANA

PLANT PHYSIOLOGY AND BIOCHEMISTRY

Año: 2005 vol. 43 p. 754 - 759

0981-9428

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 acidsensitive 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. be used as a potential source of strains for preparing highly effective inoculants for peanut plants growing in acid soils. 2+, 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.