Format

Send to

Choose Destination
Environ Sci Pollut Res Int. 2019 Jun;26(18):17986-17995. doi: 10.1007/s11356-019-05243-6. Epub 2019 May 7.

The evaluation of resistance to Co 2+ of lawn plant at seedling stage and its concentration property at adult stage.

Author information

1
College of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, Sichuan, People's Republic of China.
2
College of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, Sichuan, People's Republic of China. cxmhyx99@163.com.
3
Key Discipline Laboratory for National Defense China, Southwest University of Science and Technology, Mianyang, 621010, Sichuan, People's Republic of China. cxmhyx99@163.com.
4
Sichuan Institute of Atomic Energy, Chengdu, 610061, China.
5
Key Discipline Laboratory for National Defense China, Southwest University of Science and Technology, Mianyang, 621010, Sichuan, People's Republic of China.

Abstract

In order to evaluate the resistance of lawn plant to Co2+ at germination stage and discuss its concentration property at adult stage, four kinds of lawn plant which have some growth advantages in Co2+ polluted environment were selected as experimental materials in this research. They are tall fescue, timothy grass, inflorescences, and annual ryegrass. The results show that the evaluation of resistance to Co2+ of tall fescue's seed is the highest; the evaluation of resistance to Co2+ of annual ryegrass seed is the lowest. The low consistence Co2+ could improve the seed germination. With Co2+ concentration increase, the accumulation coefficient of four plants increased at first and decreased later; the accumulation coefficient of underground portion is higher than the accumulation coefficient of aboveground; with Co2+ concentration increase, the transfer coefficient of four plants have a remarkable decline. In these plants, the accumulation coefficient of tall fescue and annual ryegrass is bigger than other two plants. As the concentration of Co2+ treatment increased to 100 mg/kg, the aboveground enrichment of Co2+ in F. elata reached 75 mg/kg, followed by L. multiflorum (68.9 mg/kg), P. pratense (48.8 mg/kg), and D. glomerata (27.2 mg/kg).The highest underground enrichment of Co2+ in F. elata reached 836.46 mg/kg, in contrast to the lowest underground enrichment in D. glomerata, 264.67 mg/kg. It shows that fescue and annual ryegrass have a better enrichment property to Co2+ and have a better prospect for the treatment of cobalt-contaminated soil. This research could provide some scientific basis and main technical approach for the soil contaminated by Co2+.

KEYWORDS:

Bioremediation; Cobalt enrichment; Cobalt tolerance; Heavy metal contamination; Lawn plant

PMID:
31065986
DOI:
10.1007/s11356-019-05243-6
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Springer
Loading ...
Support Center