Effects of aluminum stress and AMF on the growth of Cinnamomum camphora seedlings

In order to explore the mechanism of arbuscular mycorrhiza alleviate stress of aluminum(Al) toxicity on trees of Three Gorges Reservoir Area,mycorrhizal and non-mycorrhizal Cinnamomum camphora(camphor tree) seedlings were exposed to c(Al³⁺) levels of 0,0.5,8,and 15 mmol/L for 10 weeks.The authors evaluated if the morphology,biomass and phosphorus contents of different organs of host plants could be responsible for the acid solutions with different c(Al³⁺) levels.The results showed that as far as morphology and biomass of aboveground and belowground and P content of different organs were concerned,mycorrhizal plants had higher resistance to Al than non-mycorrhizal ones at c(Al³⁺)=0 and 0.5 mmol/L in acid solutions;mycorrhizal plants appeared better or similar with non-mycorrhizal ones at c(Al³⁺)=8 and 15 mmol/L in acid solutions.The results indicate that AM fungal consortium confer some Al resistance to camphor tree seedlings.