Progress on bioremediation heavy metal pollution of Polygonum hydropiper L.
Bioremediation heavy metal pollution technology has the characteristics of safety,no secondary pollution,low cost,wide application scope,etc.It can repair water and soil effectively,and has great value in popularization and application.Polygonum hydropiper L.(Hereinafter referred to as ph)is belonging to Polygonaceae and Polygonum L.,which can accumulate heavy metals such as cadmium,strontium and lead to some degree.This paper reviews recently studies on heavy metal enrichment capacity and physiological response of it,and puts forward the key research contents in this direction:(1)Enlarging the heavy metal stress screening species of ph and mastering the effective enrichment heavy metal species;(2)Studying the molecular detoxification mechanism of ph to provide an idea for the improvement of ph and the application of biological enrichment of heavy metals;(3)Exploring the genetic regulation characteristics of ph,and selecting and breeding the biological material varieties with expectation;(4)Exploring the recycling technology of heavy metals in hydrogonum to solve the worries of application.