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Lettuce grown in silver laden soil at two different activity levels of soil microorganisms
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Ecology .
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Theoretical Biology .
2005 (English)In: Journal of Applied Botany and Food Quality, ISSN 1613-9216, Vol. 79, no 1, 33-37 p.Article in journal (Refereed) Published
Abstract [en]

Lettuce biomass, silver accumulation in lettuce, and effect of activity of soil microorganisms on these items, were studied in a series of experiments. Lettuce was cultivated in two kinds of soil with different organic matter concentrations. Initially the soil was either sterile or non-sterile, and had been supplied with different silver nitrate concentrations. Lettuce growth was significantly negatively affected by silver, especially in initially sterile soil with a lower organic matter content. There was also a significantly enhanced silver accumulation at larger silver supply in initially sterile soil with the lower organic matter content, otherwise there was no enhanced silver accumulation. There was a significant difference in respiration rate after harvest between the initially sterile soil and the non-sterile soil. In soil with the lower organic matter content, microorganism activity was inhibited by silver. In conclusion, silver accumulation increased and growth decreased in the lettuce grown in soil containing silver when the microorganism community in the soil had been affected by sterilization. The negative effects of silver on both lettuce and microorganisms were more distinct when the soil had a lower organic matter content.

Place, publisher, year, edition, pages
2005. Vol. 79, no 1, 33-37 p.
Keyword [en]
Heavy metals, microorganisms, plant accumulation, silver, soil
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:liu:diva-24811Local ID: 7097OAI: oai:DiVA.org:liu-24811DiVA: diva2:245134
Available from: 2009-10-07 Created: 2009-10-07 Last updated: 2011-01-12

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