Abstract：
:The aim of this study was to isolate and characterise metal-resistant endophytic bacteria from the tissues of Silene vulgaris collected within the vicinity of non-ferrous steelworks in Katowice, Upper Silesia, Southern Poland. Twenty-four strains of metal-resistant endophytic bacteria that belong to 15 genera were isolated from the stems and leaves of Silene vulgaris. Most of these strains showed multiple plant growth-promoting capabilities. The most promising strains, Proteus vulgaris H7, Pseudomonas sp. H15, and Pseudomonas helmanticensis H16, were used in a pot experiment, and their impact on the biomass of white mustard and Zn and Cd accumulation was examined. Soil inoculation with the tested strains resulted in a higher fresh biomass of shoots, which increased by 74.5% (Proteus vulgaris H7), 121.7% (Pseudomonas sp. H15), and 142.2% (P. helmanticensis H16) compared to the control plants. The highest phytoextraction enhancement was caused by P. helmanticensis H16, which increased Zn and Cd accumulation in the shoot tissues by 43.8% and 112.6%, respectively. All of the tested strains were detected in the soil at the last sampling points, but only Proteus vulgaris H7 and Pseudomonas sp. H15 were capable of temporary colonisation of the roots of white mustard. None of the inoculants were found in the stems and leaves of the plants during the experimental period. The plant growth-promoting features of the isolates combined with their resistance to heavy metals and high survival in soil after inoculation make these strains good candidates for the promotion of plant growth and increased phytoremediation efficiency.
journal_name
Chemospherejournal_title
Chemosphereauthors
Płociniczak T,Chodór M,Pacwa-Płociniczak M,Piotrowska-Seget Zdoi
10.1016/j.chemosphere.2018.12.018subject
Has Abstractpub_date
2019-03-01 00:00:00pages
250-260eissn
0045-6535issn
1879-1298pii
S0045-6535(18)32340-3journal_volume
219pub_type
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