F. Assefa et D. Kleiner, NODULATION OF AFRICAN-YAM-BEAN (SPHENOSTYLIS-STENOCARPA) BY BRADYRHIZOBIUM SP ISOLATED FROM ERYTHRINA-BRUCEI, Biology and fertility of soils, 25(2), 1997, pp. 209-210
African yam bean (Sphenostylis stenocarpa), which is widely cultivated
in Africa because of its growth capability on marginal soils, was nod
ulated by an endosymbiont (characterized and designed Bradyrhizobium s
p. AUEB20) isolated from the Ethiopian tree Erythrina brucei with the
formation of a small number of large, indeterminate N-2-fixing nodules
. In contrast, 24 other isolates from Ethiopian woody legumes were ine
ffective, Strain AUEB20 promiscuously nodulated a number of tropical l
egumes, but none out of five European crop plants tested.