Physiological Responses of Scindapsus aureus and Chlorophytum comosum to Lead Stress
Scindapsus aureus and Chlorophytum comosum were treated by Pb2+ to explain their resistance to Pb2+ stress.The aim was to determine the influence of lead stress on physiological and biochemical changes of plants and study the response to heavy metal stress.The experimental results showed that the soluble sugar content of S.aureus increased first and then decreased with prolonged stress and then decreased with prolonged stress and elevated concentrations of lead.Proline,malondialdehyde and chlorophyll contents increased,while soluble protein content decreased.The soluble sugar,proline and malondialdehyde content of Chlorophytum comosum increased with the increase of concentration and duration of stress,while soluble protein content decreased continually.The chlorophyll content first increased and then decreased subsequently.Analysis of subordinate function on resistance to Pb2+ stress of S.aureus and C.comosum indicated that C.comosum would be better than S.aureus.