Time course of nodule development in the Discaria trinervis (Rhamnaceae) - Frankia symbiosis

arbuste arbustos bacteria biological development esporas etapas de desarrollo de la planta fixation de l'azote frankia nitrogen fixation nudosidades radiculares ontogeny pelos radicales plant developmental stages plantule poil absorbant rhamnaceae root hairs root nodules seedlings shrubs simbiosis spore spores symbiose symbiosis