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The arbuscular mycorrhizal fungus Glomus mosseae gives contradictory effects on phosphorus and arsenic acquisition by Medicago sativa Linn.
Sci Total Environ. 2007 Jul 01; 379(2-3):226-34.ST

Abstract

Mycorrhizal fungi may play an important role in protecting plants against arsenic (As) contamination. However, little is known about the direct and indirect involvement of arbuscular mycorrhizal fungi (AMF) in detoxification mechanisms. A compartmented pot cultivation system ('cross-pots') is used here to investigate the roles of AMF Glomus mosseae in plant phosphorus (P) and As acquisition by Medicago sativa, and P-As interactions. The results indicate that fungal colonization dramatically increased plant dry weight by a factor of around 6, and also substantially increased both plant P and As contents (i.e. total uptake). Irrespective of P and As addition levels, AM plants had shoot and root P concentrations 2 fold higher, but As concentrations significantly lower, than corresponding uninoculated controls. The decreased shoot As concentrations were largely due to "dilution effects" that resulted from stimulated growth of AM plants and reduced As partitioning to shoots. The study provides further evidence for the protective effects of AMF on host plants against As contamination, and have uncovered key aspects of underlying mechanisms. The possible application of AMF in remediation practices is discussed.

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Authors+Show Affiliations

Chen B
Department of Soil Environmental Sciences/State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, P.R. China.
Xiao X
No affiliation info available
Zhu YG
No affiliation info available
Smith FA
No affiliation info available
Xie ZM
No affiliation info available
Smith SE
No affiliation info available

MeSH

ArsenicBiodegradation, EnvironmentalHyphaeMedicago sativaMycorrhizaePhosphorusPlant RootsPlant ShootsSoil Pollutants

Pub Type(s)

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

Language

eng

PubMed ID

17157359

Citation

Chen, Baodong, et al. "The Arbuscular Mycorrhizal Fungus Glomus Mosseae Gives Contradictory Effects On Phosphorus and Arsenic Acquisition By Medicago Sativa Linn." The Science of the Total Environment, vol. 379, no. 2-3, 2007, pp. 226-34.
Chen B, Xiao X, Zhu YG, et al. The arbuscular mycorrhizal fungus Glomus mosseae gives contradictory effects on phosphorus and arsenic acquisition by Medicago sativa Linn. Sci Total Environ. 2007;379(2-3):226-34.
Chen, B., Xiao, X., Zhu, Y. G., Smith, F. A., Xie, Z. M., & Smith, S. E. (2007). The arbuscular mycorrhizal fungus Glomus mosseae gives contradictory effects on phosphorus and arsenic acquisition by Medicago sativa Linn. The Science of the Total Environment, 379(2-3), 226-34.
Chen B, et al. The Arbuscular Mycorrhizal Fungus Glomus Mosseae Gives Contradictory Effects On Phosphorus and Arsenic Acquisition By Medicago Sativa Linn. Sci Total Environ. 2007 Jul 1;379(2-3):226-34. PubMed PMID: 17157359.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The arbuscular mycorrhizal fungus Glomus mosseae gives contradictory effects on phosphorus and arsenic acquisition by Medicago sativa Linn. AU - Chen,Baodong, AU - Xiao,Xueyi, AU - Zhu,Yong-Guan, AU - Smith,F Andrew, AU - Xie,Z Miao, AU - Smith,Sally E, Y1 - 2006/12/06/ PY - 2006/01/23/received PY - 2006/07/04/revised PY - 2006/07/04/accepted PY - 2006/12/13/pubmed PY - 2007/8/31/medline PY - 2006/12/13/entrez SP - 226 EP - 34 JF - The Science of the total environment JO - Sci Total Environ VL - 379 IS - 2-3 N2 - Mycorrhizal fungi may play an important role in protecting plants against arsenic (As) contamination. However, little is known about the direct and indirect involvement of arbuscular mycorrhizal fungi (AMF) in detoxification mechanisms. A compartmented pot cultivation system ('cross-pots') is used here to investigate the roles of AMF Glomus mosseae in plant phosphorus (P) and As acquisition by Medicago sativa, and P-As interactions. The results indicate that fungal colonization dramatically increased plant dry weight by a factor of around 6, and also substantially increased both plant P and As contents (i.e. total uptake). Irrespective of P and As addition levels, AM plants had shoot and root P concentrations 2 fold higher, but As concentrations significantly lower, than corresponding uninoculated controls. The decreased shoot As concentrations were largely due to "dilution effects" that resulted from stimulated growth of AM plants and reduced As partitioning to shoots. The study provides further evidence for the protective effects of AMF on host plants against As contamination, and have uncovered key aspects of underlying mechanisms. The possible application of AMF in remediation practices is discussed. SN - 0048-9697 UR - https://www.unboundmedicine.com/medline/citation/17157359/The_arbuscular_mycorrhizal_fungus_Glomus_mosseae_gives_contradictory_effects_on_phosphorus_and_arsenic_acquisition_by_Medicago_sativa_Linn_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0048-9697(06)00725-X DB - PRIME DP - Unbound Medicine ER -