Effect of Wild and Genetically Modified Rhizosphere Bacteria Pseudomonas aureofaciens on the Accumulation of Arsenic by Plants

Сизова, О. И.; Lyubun, E. V.; Кочетков, В. В.; Validov, Shamil; Boronin, A. M.

doi:10.1023/b:abim.0000010356.76729.08

Cited by 4 publications

(1 citation statement)

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“…Mycorrhiza are known to occur naturally and colonize plants grown in metal polluted soils (Harris and Jurgensen 1977, Hetrick et al 1994, Galli et al 1994, Weissenhorn et al 1995, Sommer et al 2002, suggesting tolerance of these fungi to high metal concentrations in soils. On the other hand, resistant bacterial isolates may also increase the metal uptake by plants due to an enhanced metal availability in soils (Whiting et al 2001) and/or induce a positive effect on growth and plant development (Sizova et al 2004).…”

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confidence: 99%

Influence of Cadophora finlandica and other microbial treatments on cadmium and zinc uptake in willows grown on polluted soil

Utmazian¹,

Schweiger²,

Sommer³

et al. 2007

PLANT SOIL ENVIRON

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We conducted a pot experiment to evaluate the Cd and Zn accumulation in leaves and roots of Salix smithiana (BOKU-03DE-001) and S. caprea (BOKU-01AT-004) clones grown on a metal-contaminated soil as affected by native microbes extracted from the same experimental soil, and the fungus Cadophora finlandica. Plant biomass production of S. smithiana was decreased in all the treatments compared to the sterilized control. In contrast, S. caprea grew best on the non-sterilized soil. Similar effects were observed for plant Zn and Cd contents. Microbial treatments affected metal accumulation differently in the two Salix species. The effects of the microbial treatments on biomass and metal content of leaves were not related to the degree of mycorrhization. A comparison with literature data suggests that the plant response to microbial inoculation in terms of metal accumulation may depend on the plant-internal metal concentration. Our findings also illustrate a difficulty of successful rhizosphere management using metal-tolerant microbial isolates to further enhance the phytoextraction process.

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