A Comparative Study on Pb Tolerance and Enrichment Characteristics among Different Species of Compositae

[...]based on the integrated observation of the enrichment coeficient, transpor tactor and repair potential index, if believed that R. hirta can be used to restore Pb contaminated soil at low concentration. [...]under toxic concentration, RTl more than 0.9 shows that root system of plant is not inhi...

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Published inMeteorological and environmental research Vol. 10; no. 2; pp. 73 - 77
Main Authors Bin, Xuan, Ji, Wang, Lingyun, Zhang, Xiongfei, Cai, Fengqing, Hu, Zhibin, Duan, Ding, Li
Format Journal Article
LanguageEnglish
Published Cranston Wu Chu (USA-China) Science and Culture Media Corporation 01.04.2019
Subjects
Accumulators
Antioxidants
Bioaccumulation
Comparative analysis
Comparative studies
Cytoplasm
Detoxification
Ecosystems
Enrichment
Environmental science
Experiments
Flowers & plants
Heavy metals
Lead
Metal concentrations
Metals
Organelles
Physiological functions
Physiology
Plant growth
Plant resistance
Pollution
Sediment pollution
Seeds
Soil
Soil contamination
Soil pollution
Soil sciences
Structure-function relationships
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Summary:[...]based on the integrated observation of the enrichment coeficient, transpor tactor and repair potential index, if believed that R. hirta can be used to restore Pb contaminated soil at low concentration. [...]under toxic concentration, RTl more than 0.9 shows that root system of plant is not inhibited obviously181. [...]Tl and RTl could be taken as important indexes of measuring plant toleranceo heavy metals. Previously discovered hyper-accumulators have little biomass, slow grow and relatively lower total transfer amount of heavy metals. [...]total accumulation amount of heavy metals from aboveground part is an important index of evaluating potential of plant restoring heavy metals contaminated soil16-171. Once the concentrations of heavy metals exceeds the limits of structure and physiological function of leaf cell, it could harm various physiological metabolic activities in cytoplasm, organelles and antioxidant enzymes protection system, thereby inhibiting plant growth. [...]it is urgent to break down the mechanism of Pb detoxification in plants in curent Pb hyper-accumulator research, thereby finding reasonable methods of resisting plant Pb poisoning and enhancing Pb absorption ability of hyper-accumulator.
ISSN:2152-3940
DOI:10.19547/j.issn2152-3940.2019.02.015