Tags

Type your tag names separated by a space and hit enter

Characterization of bacteria in the rhizosphere soils of Polygonum pubescens and their potential in promoting growth and Cd, Pb, Zn uptake by Brassica napus.
Int J Phytoremediation. 2014; 16(4):321-33.IJ

Abstract

Microbe-enhanced phytoremediation has been considered as a promising measure for the remediation of metal-contaminated soils. In this study, two bacterial strains JYX7 and JYX10 were isolated from rhizosphere soils of Polygonum pubescens grown in metal-polluted soil and identified as of Enterobacter sp. and Klebsiella sp. based on 16S rDNA sequences, respectively. JYX7 and JYX10 showed high Cd, Pb and Zn tolerance and increased water-soluble Cd, Pb and Zn concentrations in culture solution and metal-added soils. Two isolates produced plant growth-promoting substances such as indole acetic acid, siderophore, 1-aminocyclopropane-1-carboxylic deaminase, and solubilized inorganic phosphate. Based upon their ability in metal tolerance and solubilization, two isolates were further studied for their effects on growth and accumulation of Cd, Pb, and Zn in Brassica napus (rape) by pot experiments. Rapes inoculated with JYX7 and JYX10 had significantly higher dry weights, concentrations and uptakes of Cd, Pb, Zn in both above-ground and root tissues than those without inoculation grown in soils amended with Cd (25 mg kg(-1)), Pb (200 mg kg(-1)) or Zn (200 mg kg(-1)). The present results demonstrated that JYX7 and JYX10 are valuable microorganism, which can improve the efficiency of phytoremediation in soils polluted by Cd, Pb, and Zn.

Authors

Jing YX
No affiliation info available
Yan JL
No affiliation info available
He HD
No affiliation info available
Yang DJ
No affiliation info available
Xiao L
No affiliation info available
Zhong T
No affiliation info available
Yuan M
No affiliation info available
Cai XD
No affiliation info available
Li SB
No affiliation info available

MeSH

BacteriaBase SequenceBiodegradation, EnvironmentalBrassicaCadmiumLeadMetals, HeavyMolecular Sequence DataPhosphatesPlant RootsPolygonumRhizosphereSequence Analysis, DNASoilSoil MicrobiologySoil PollutantsZinc

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24912234

Citation

Jing, Yuan Xiao, et al. "Characterization of Bacteria in the Rhizosphere Soils of Polygonum Pubescens and Their Potential in Promoting Growth and Cd, Pb, Zn Uptake By Brassica Napus." International Journal of Phytoremediation, vol. 16, no. 4, 2014, pp. 321-33.
Jing YX, Yan JL, He HD, et al. Characterization of bacteria in the rhizosphere soils of Polygonum pubescens and their potential in promoting growth and Cd, Pb, Zn uptake by Brassica napus. Int J Phytoremediation. 2014;16(4):321-33.
Jing, Y. X., Yan, J. L., He, H. D., Yang, D. J., Xiao, L., Zhong, T., Yuan, M., Cai, X. D., & Li, S. B. (2014). Characterization of bacteria in the rhizosphere soils of Polygonum pubescens and their potential in promoting growth and Cd, Pb, Zn uptake by Brassica napus. International Journal of Phytoremediation, 16(4), 321-33.
Jing YX, et al. Characterization of Bacteria in the Rhizosphere Soils of Polygonum Pubescens and Their Potential in Promoting Growth and Cd, Pb, Zn Uptake By Brassica Napus. Int J Phytoremediation. 2014;16(4):321-33. PubMed PMID: 24912234.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Characterization of bacteria in the rhizosphere soils of Polygonum pubescens and their potential in promoting growth and Cd, Pb, Zn uptake by Brassica napus. AU - Jing,Yuan Xiao, AU - Yan,Jun Lan, AU - He,Huai Dong, AU - Yang,Dan Jing, AU - Xiao,Li, AU - Zhong,Ting, AU - Yuan,Ming, AU - Cai,Xin De, AU - Li,Shu Bin, PY - 2014/6/11/entrez PY - 2014/6/11/pubmed PY - 2014/7/11/medline SP - 321 EP - 33 JF - International journal of phytoremediation JO - Int J Phytoremediation VL - 16 IS - 4 N2 - Microbe-enhanced phytoremediation has been considered as a promising measure for the remediation of metal-contaminated soils. In this study, two bacterial strains JYX7 and JYX10 were isolated from rhizosphere soils of Polygonum pubescens grown in metal-polluted soil and identified as of Enterobacter sp. and Klebsiella sp. based on 16S rDNA sequences, respectively. JYX7 and JYX10 showed high Cd, Pb and Zn tolerance and increased water-soluble Cd, Pb and Zn concentrations in culture solution and metal-added soils. Two isolates produced plant growth-promoting substances such as indole acetic acid, siderophore, 1-aminocyclopropane-1-carboxylic deaminase, and solubilized inorganic phosphate. Based upon their ability in metal tolerance and solubilization, two isolates were further studied for their effects on growth and accumulation of Cd, Pb, and Zn in Brassica napus (rape) by pot experiments. Rapes inoculated with JYX7 and JYX10 had significantly higher dry weights, concentrations and uptakes of Cd, Pb, Zn in both above-ground and root tissues than those without inoculation grown in soils amended with Cd (25 mg kg(-1)), Pb (200 mg kg(-1)) or Zn (200 mg kg(-1)). The present results demonstrated that JYX7 and JYX10 are valuable microorganism, which can improve the efficiency of phytoremediation in soils polluted by Cd, Pb, and Zn. SN - 1522-6514 UR - https://www.unboundmedicine.com/medline/citation/24912234/Characterization_of_bacteria_in_the_rhizosphere_soils_of_Polygonum_pubescens_and_their_potential_in_promoting_growth_and_Cd_Pb_Zn_uptake_by_Brassica_napus_ DB - PRIME DP - Unbound Medicine ER -