Changes in soil solution Zn and pH and uptake of Zn by arbuscular mycorrhizal red clover in Zn-contaminated soil

Li, Xin; Christie, Peter

doi:10.1016/s0045-6535(00)00126-0

Cited by 145 publications

(63 citation statements)

References 13 publications

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“…In general, our present results agree with those of Li and Christie (2001), who studied AM red clover under similar conditions. For example, the decreased plant uptake of Zn, and lower concentrations of Zn and higher pH values in the soil solution of AM pots are in agreement.…”

Section: Discussionsupporting

confidence: 93%

“…Our results are consistent with the suggestion (Chen et al, 2001;Li and Christie, 2001;Zhu et al, 2001) that AM fungi immobilize heavy metals such as Zn in moderately polluted soils. This decreases soil solution Zn concentration and root and shoot Zn uptake, and increases residual Zn remaining in the soil after plant growth.…”

Section: Discussionsupporting

confidence: 93%

“…The higher residual soil pH observed in the AM treatments agrees with the higher soil solution pH values noted by Li and Christie (2001). The lower plant-available P found in the AM pots also supports the higher P offtakes detected, and the higher residual soil total Zn measured in the AM pots is in accord with the lower Zn uptakes observed in AM plants.…”

Section: Discussionsupporting

confidence: 80%

“…However, some of the results differ, and this may be related to differences in the experimental conditions. Firstly, Li and Christie (2001) used threecompartment pots ('rhizoboxes'). The plants grew in a central compartment separated by 30-lm-mesh barriers from the two outer compartments.…”

Section: Discussionmentioning

confidence: 99%

“…had large capacities for rapid passive adsorption of Zn and Cd. Li and Christie (2001) found that soil solution Zn concentrations were lower and pH values were higher in AM red clover than in non-mycorrhizal controls. They suggested that the protective effects of AM inoculation for plants against excessive Zn uptake may have been due to decreasing Zn bioavailability in the soil solution or immobilization of Zn in the host plant roots.…”

Section: Introductionmentioning

confidence: 88%

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Influence of early stages of arbuscular mycorrhiza on uptake of zinc and phosphorus by red clover from a low-phosphorus soil amended with zinc and phosphorus

Christie

2003

Chemosphere

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Influence of early stages of arbuscular mycorrhiza on uptake of zinc and phosphorus by red clover from a low-phosphorus soil ameded with zinc and phosphorus Bi, Y. L., Li, X. L., & Christie, P. (2003). Influence of early stages of arbuscular mycorrhiza on uptake of zinc and phosphorus by red clover from a low-phosphorus soil ameded with zinc and phosphorus. Chemosphere, 50(6)(6), 831-837. DOI: 10.1016/S0045-6535(02)00227-8 Published in: ChemosphereQueen's University Belfast -Research Portal: Link to publication record in Queen's University Belfast Research Portal General rights Copyright for the publications made accessible via the Queen's University Belfast Research Portal is retained by the author(s) and / or other copyright owners and it is a condition of accessing these publications that users recognise and abide by the legal requirements associated with these rights.Take down policy The Research Portal is Queen's institutional repository that provides access to Queen's research output. Every effort has been made to ensure that content in the Research Portal does not infringe any person's rights, or applicable UK laws. If you discover content in the Research Portal that you believe breaches copyright or violates any law, please contact openaccess@qub.ac.uk. AbstractIn a pot experiment, red clover (Trifolium pratense) was grown in sterilized Zn-amended low available P soil (0, 50 or 400 mg Zn kg À1 ) with or without 100 mg kg À1 added P and with or without inoculation with the arbuscular mycorrhizal (AM) fungus G. mosseae. When the plants were harvested after 40 days, AM colonization of the roots was still at an early stage, with only 14-38% of total root length colonized on average. AM colonization was highest in low-P soil, and was lowest in soil amended with 400 mg Zn kg À1 . Shoot yields were highest in AM plants with added P, but root yields were unaffected by AM inoculation. Shoot and root yields were higher with 100 mg added P kg À1 soil, but lower with 400 mg Zn kg À1 than 50 mg Zn kg À1 or controls unamended with Zn. Shoot and root P concentrations were seldom higher in AM plants, but shoot P offtakes were higher in AM plants with added P.Concentrations of Zn and Cu were much higher in the roots than in the shoots. Shoot and root Zn and shoot Cu were lower, but root Cu was higher, in AM plants. Soil residual pH after plant growth was higher in AM treatments, and residual total Zn was also higher, indicating lower Zn uptake by AM plants. Soil solution pH was higher in AM treatments, and soil solution Zn was lower in the presence of mycorrhiza. The results are discussed in terms of AM protection of the plants against excessive shoot Zn uptake.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionsupporting

confidence: 93%

Section: Discussionsupporting

confidence: 80%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 88%

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