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Paper Information

Title: 

PLANT GENETIC ENGINEERING FOR BIOREMEDIATION OF SOILS CONTAMINATED BY HEAVY METALS

Type: PAPER
Author(s): RAHMANI M.,MOKHTARZADEH S.,DERAKHSHAN E.,ABBASZADEH SH.
 
 
 
Name of Seminar: HAMAYESHE MANTAGHEI KARBORD FANAVARIHAYE NOVIN DAR KESHAVARZI
Type of Seminar:  CONGRESS
Sponsor:  Islamic Azad University, Shiraz
Date:  2008Volume 1
 
 
Abstract: 

HEAVY METALS AND TOXIC METALLOIDS SUCH AS CADMIUM, CADMIUM, LEAD, MERCURY, ARSENIC, SELENIUM, TRICHLORO ETHYLENE AND TRINITRO TOLUENE CONTINUAL HAVE RELEASE TO THE ENVIRONMENT AND BIOSPHERE HAS BEEN FURTHER POLLUTED TO THIS POLLUTANTS. NOWADAYS, NEED TO CHEAP, EFFECTIVE AND STABLE METHODS FOR REMEDIATION AND DETOXIFYING OF THESE TOXIC POLLUTANTS. PHYTOREMEDIATION-THE USE OF GREEN PLANTS TO REMOVE, CONTAIN OR RENDER HARMLESS ENVIRONMENTAL POLLUTANTS-MAY OFFER AN EFFECTIVE AND CHEAP REMEDIATION METHOD AND DUE TO PLANT GROWTH IN STU, SOLAR-DRIVEN SYSTEM THAT COMPARED TO THE CONVENTIONAL TREATMENT METHODS, IS CHEAP AND ENVIRONMENTALLY NONDESTRUCTIVE. IN POLLUTED ECOSYSTEMS TO TOXIC METALS, SOME OF PLANTS CAN ABSORB, ACCUMULATE, DETOXIFYING AND RELEASE AS GASEOUS FORM INTO ENVIRONMENT. HOWEVER, THE REMEDIATION POTENTIAL OF MANY OF THESE PLANTS IS LIMITED BECAUSE OF THEIR SLOW GROWTH, LOW BIOMASS AND SUSCEPTIBLE TO SOME OF ENVIRONMENTAL STRESSES. IN RECENT YEARS, GENETIC ENGINEERING USED TO MODIFY PLANTS FOR ENHANCEMENT METAL UPTAKE, TRANSPORT AND HIGHER BIOMASS PRODUCTION OF CANDIDATE PLANTS. ALTHOUGH PLANTS HAVE THE INHERENT ABILITY TO DETOXIFY SOME XENOBIOTIC POLLUTANTS, THEY GENERALLY LACK THE CATABOLIC PATHWAY FOR COMPLETE DEGRADATION/ MINERALIZATION OF THESE COMPOUNDS COMPARED TO MICROORGANISMS. HENCE, TRANSFER OF GENES INVOLVED IN XENOBIOTIC DEGRADATION FROM MICROBES/OTHER EUKARYOTES TO PLANTS WILL FURTHER ENHANCE THEIR POTENTIAL FOR REMEDIATION OF THESE DANGEROUS GROUPS OF COMPOUNDS.

 
Keyword(s): PHYTOREMEDIATION, TRANSFORMED PLANTS, HEAVY METALS, ORGANIC POLLUTANTS
 
 
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