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A nonpathogenic Fusarium oxysporum strain enhances phytoextraction of heavy metals by the hyperaccumulator Sedum alfredii Hance.
J Hazard Mater. 2012 Aug 30; 229-230:361-70.JH

Abstract

Low biomass and shallow root systems limit the application of heavy metal phytoextraction by hyperaccumulators. Plant growth-promoting microbes may enhance hyperaccumulators'phytoextraction. A heavy metal-resistant fungus belonged to the Fusarium oxysporum complex was isolated from the Zn/Cd co-hyperaccumulator Sedum alfredii Hance grown in a Pb/Zn mined area. This Fusarium fungus was not pathogenic to plants but promoted host growth. Hydroponic experiments showed that 500 μM Zn(2+) or 50 μM Cd(2+) combined with the fungus increased root length, branches, and surface areas, enhanced nutrient uptake and chlorophyll synthesis, leading to more vigorous hyperaccumulators with greater root systems. Soil experiments showed that the fungus increased root and shoot biomass and S. alfredii-mediated heavy metal availabilities, uptake, translocation or concentrations, and thus increased phytoextraction of Zn (144% and 44%), Cd (139% and 55%), Pb (84% and 85%) and Cu (63% and 77%) from the original Pb/Zn mined soil and a multi-metal contaminated paddy soil. Together, the nonpathogenic Fusarium fungus was able to increase S. alfredii root systems and function, metal availability and accumulation, plant biomass, and thus phytoextraction efficiency. This study showed a great application potential for culturable indigenous fungi other than symbiotic mycorrhizas to enhance the phytoextraction by hyperaccumulators.

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Authors+Show Affiliations

Zhang X
MOE Key Laboratory of Environment Remediation and Ecosystem Health, College of Environmental and Resources Science, Zhejiang University, Zijingang Campus, Hangzhou 310058, China.
Lin L
No affiliation info available
Chen M
No affiliation info available
Zhu Z
No affiliation info available
Yang W
No affiliation info available
Chen B
No affiliation info available
Yang X
No affiliation info available
An Q
No affiliation info available

MeSH

Biodegradation, EnvironmentalChlorophyllFusariumMetals, HeavyMyceliumNitrogenPlant RootsPlant ShootsSedumSeedlingsSoil PollutantsSymbiosis

Pub Type(s)

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

Language

eng

PubMed ID

22749969

Citation

Zhang, Xincheng, et al. "A Nonpathogenic Fusarium Oxysporum Strain Enhances Phytoextraction of Heavy Metals By the Hyperaccumulator Sedum Alfredii Hance." Journal of Hazardous Materials, vol. 229-230, 2012, pp. 361-70.
Zhang X, Lin L, Chen M, et al. A nonpathogenic Fusarium oxysporum strain enhances phytoextraction of heavy metals by the hyperaccumulator Sedum alfredii Hance. J Hazard Mater. 2012;229-230:361-70.
Zhang, X., Lin, L., Chen, M., Zhu, Z., Yang, W., Chen, B., Yang, X., & An, Q. (2012). A nonpathogenic Fusarium oxysporum strain enhances phytoextraction of heavy metals by the hyperaccumulator Sedum alfredii Hance. Journal of Hazardous Materials, 229-230, 361-70. https://doi.org/10.1016/j.jhazmat.2012.06.013
Zhang X, et al. A Nonpathogenic Fusarium Oxysporum Strain Enhances Phytoextraction of Heavy Metals By the Hyperaccumulator Sedum Alfredii Hance. J Hazard Mater. 2012 Aug 30;229-230:361-70. PubMed PMID: 22749969.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A nonpathogenic Fusarium oxysporum strain enhances phytoextraction of heavy metals by the hyperaccumulator Sedum alfredii Hance. AU - Zhang,Xincheng, AU - Lin,Li, AU - Chen,Mingyue, AU - Zhu,Zhiqiang, AU - Yang,Weidong, AU - Chen,Bao, AU - Yang,Xiaoe, AU - An,Qianli, Y1 - 2012/06/16/ PY - 2012/03/08/received PY - 2012/06/07/revised PY - 2012/06/08/accepted PY - 2012/7/4/entrez PY - 2012/7/4/pubmed PY - 2012/12/10/medline SP - 361 EP - 70 JF - Journal of hazardous materials JO - J Hazard Mater VL - 229-230 N2 - Low biomass and shallow root systems limit the application of heavy metal phytoextraction by hyperaccumulators. Plant growth-promoting microbes may enhance hyperaccumulators'phytoextraction. A heavy metal-resistant fungus belonged to the Fusarium oxysporum complex was isolated from the Zn/Cd co-hyperaccumulator Sedum alfredii Hance grown in a Pb/Zn mined area. This Fusarium fungus was not pathogenic to plants but promoted host growth. Hydroponic experiments showed that 500 μM Zn(2+) or 50 μM Cd(2+) combined with the fungus increased root length, branches, and surface areas, enhanced nutrient uptake and chlorophyll synthesis, leading to more vigorous hyperaccumulators with greater root systems. Soil experiments showed that the fungus increased root and shoot biomass and S. alfredii-mediated heavy metal availabilities, uptake, translocation or concentrations, and thus increased phytoextraction of Zn (144% and 44%), Cd (139% and 55%), Pb (84% and 85%) and Cu (63% and 77%) from the original Pb/Zn mined soil and a multi-metal contaminated paddy soil. Together, the nonpathogenic Fusarium fungus was able to increase S. alfredii root systems and function, metal availability and accumulation, plant biomass, and thus phytoextraction efficiency. This study showed a great application potential for culturable indigenous fungi other than symbiotic mycorrhizas to enhance the phytoextraction by hyperaccumulators. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/22749969/A_nonpathogenic_Fusarium_oxysporum_strain_enhances_phytoextraction_of_heavy_metals_by_the_hyperaccumulator_Sedum_alfredii_Hance_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(12)00633-4 DB - PRIME DP - Unbound Medicine ER -