Abstract:To select lianas with high tolerance to Mn polluted soil and further study its physiological mechanisms on Mn resistance,We studied Ficus pumila,Lonicera japonica,Parthenocissus quinquefolia,Trachelospermum jasminoides in soil containing 3 000 mg/kg (T1),6 000 mg/kg (T2),9 000 mg/kg(T3) and 12 000 mg/kg (T4) Mn,with the soil was not added Mn as the control.The effects of different concentrations of Mn stress on biomass,mass growth,different parts of the Mn content,chlorophy content,malondialdehyde (MDA) content,the activities of superoxide dismutase (SOD),peroxidase (POD) and catalase (CAT) in four lianas were studied,and their tolerance indexes (Ti),translocation factors (TF),bio-concentration factors (BCF) were analyzed.The results are as follows:(1) With the increase of Mn concentration in soil, the biomass and mass growth mostly were declined,average tolerance index of F.pumila,P.quinquefolia,L.japonica and T.jasminoides was 82.48%,84.86%,89.21% and 95.41%,respectively; (2) The general trend of Mn content in aboveground parts and roots were increased with the increase of Mn concentrations in soil,and the Mn content in roots were always higher than that in aboveground parts ,the TF values were less than 1 and the average BCF of aboveground parts and roots from high to low were as follows:T.jasminoides>L.japonica>P.quinquefolia> Ficus pumila; (3) Chlorophy content was mostly decreased with the increase of Mn concentration in soil,MDA content was continuously increased,and the activities of SOD,POD,CAT were firstly increased and then decreased.Chlorophy content and three antioxidant enzymes activities decrease as well as MDA content increase of T.jasminoides were the lowest among four lianas when treated with T4.The study revealed that Mn tolerance,transfer and accumulation abilities of T.jasminoides were the highest in four lianas,suggesting it is potential use in Mn tailings soil bioremediation.