Essentiality of Boron for Symbiotic Dinitrogen Fixation in Pea (Pisum sativum) Rhizobium Nodules.

  • Bolaños L
  • Esteban E
  • De Lorenzo C
 et al. 
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Abstract

The effect of boron deficiency on symbiotic nitrogen fixation in pea (Pisum sativum) was examined. The absence of boron in the culture medium resulted in a decrease of the number of nodules and an alteration of nodule development leading to an inhibition of nitrogenase activity. Examination of boron-deficient nodules showed dramatic changes in cell walls and in both peribacteroid and infection thread membranes, suggesting a role for boron in the stability of these structures. These results indicate that boron is a requirement for normal nodule development and functionality.

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Authors

  • L Bolaños

  • E. Esteban

  • C. De Lorenzo

  • M. Fernandez-Pascual

  • M. R. De Felipe

  • A. Garate

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