| Abstrakt: |
AbstractEffect of root exudates of Lupinusplants on hyphal growth of arbuscular mycorrhizal (AM) fungus was investigated in order to elucidate the failure of mycorrhizal colonization in nonhost plants. Four species of Lupinuswere grown in solution culture and root exudates were collected. Spores of Gigasporamargarita were incubated with the root exudates. Hyphal length in the root exudates of L. luteus, L. aridus, and L. cosentiniwas shorter than that of the control treatment, irrespective of the P status of Lupinusplants. Numbers of hyphae exhibiting branching were lower in the root exudates of L. luteusand L. cosentinithan in those of the controls. It is suggested that these Lupinusplants did not induce pre-symbiotic hyphal growth of AM fungi but inhibited it. |
