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PLANT PHYSIOLOGY , Vol 104, Issue 1 85-90, Copyright © 1994 by American Society of Plant Biologists

PLANT-MICROBE INTERACTIONS

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

L. Bolanos, E. Esteban, C. de Lorenzo, M. Fernandez-Pascual, M. R. de Felipe, A. Garate and I. Bonilla
Departamento de Biologia (L.B., I.B.), and Departamento de Quimica Agricola (E.E., A.G.), Facultad de Ciencias, Universidad Autonoma de Madrid, 28049 Madrid, Spain

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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 Plant Cell PhysiolHome page
M. A. Wimmer, G. Lochnit, E. Bassil, K. H. Muhling, and H. E. Goldbach
Membrane-Associated, Boron-Interacting Proteins Isolated by Boronate Affinity Chromatography
Plant Cell Physiol., July 1, 2009; 50(7): 1292 - 1304.
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Copyright © 1994 by the American Society of Plant Biologists