The roots have nitrogen-fixing nodules that contain the soil actinomycete Frankia.
However, in the course of discussing these questions, he touches on many other issues too, and gives much detail on ninth-century politics and religious practice in Frankia.
The Elaeagnaceae often harbor nitrogen-fixing actinomycetes of the genus Frankia in their roots, making them useful for soil reclamation.
As with other species in the genus Elaeagnus, E. multiflora plants are actinorhizal, growing in symbiosis with the actinobacterium Frankia in the soil.
Frankia is a genus of nitrogen fixing, filamentous bacteria that live in symbiosis with actinorhizal plants, similar to the Rhizobia bacteria that are found in the root nodules of legumes in the Fabaceae family.
Root nodules that occur on non-legume genera like Parasponia in association with Rhizobium bacteria, and those that arise from symbiotic interactions with Actinobacteria Frankia in some plant genera such as Alnus, vary significantly from those formed in the legume-rhizobia symbiosis.
Frankia |
Although his son, Leudesius, and much of his family were destroyed in the conflict between the factions of Saint Leudegar of Autun Leger and Ebroin in 676, the name does resurface in the 7th century in Frankia suggesting he may have had some descendants who survived and Chaume has posited a sister who was ancestor to a number of powerful families during the Carolingian era such as the Guerinids, the counts of Gatinais and the Guidonids.
Casuarina glauca is an actinorhizal plant producing root nitrogen-fixing nodules infested by Frankia.
Bacteria that do associate with plants include the actinobacteria Frankia, which form symbiotic root nodules in actinorhizal plants, and several cyanobacteria (Nostoc) associated with aquatic ferns, Cycas and Gunneras.