Microbial biomass, enzyme and mineralization activity in relation to soil organic C, N and P turnover influenced by acid metal stress

Li, Yongtao; Rouland, C.; Benedetti, Marc F.; Li, Fangbai; Pando, Anne; Lavelle, Patrick; Dai, Jun

doi:10.1016/j.soilbio.2009.01.021

Cited by 173 publications

(85 citation statements)

References 49 publications

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“…Soil urease, as an exocellular enzyme, mainly originates from soil microbial metabolites and root exudates, and heavy metal would inhibit microorganism or root growth and then reduce the urease source. Amylase can degrade polysaccharides (starch) to glucose, and invertase (sucrase) can hydrolyze sucrose, a common plant disaccharide, to two reducing hexoses (glucose and fructose) through the breakdown of the glycoside bond (Li et al 2009). Our study revealed that amylase activity was inhibited, while sucrase activity was slightly stimulated.…”

Section: Discussionmentioning

confidence: 99%

Determining soil enzyme activities for the assessment of fungi and citric acid-assisted phytoextraction under cadmium and lead contamination

Mao

Tang

Feng

et al. 2015

Environ Sci Pollut Res

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Microorganism or chelate-assisted phytoextraction is an effective remediation tool for heavy metal polluted soil, but investigations into its impact on soil microbial activity are rarely reported. Consequently, cadmium (Cd)-and lead (Pb)-resistant fungi and citric acid (CA) were introduced to enhance phytoextraction by Solanum nigrum L. under varied Cd and Pb pollution levels in a greenhouse pot experiment. We then determined accumulation of Cd and Pb in S. nigrum and the soil enzyme activities of dehydrogenase, phosphatase, urease, catalase, sucrase, and amylase. Detrended canonical correspondence analysis (DCCA) was applied to assess the interactions between remediation strategies and soil enzyme activities. Results indicated that the addition of fungi, CA, or their combination enhanced the root biomass of S. nigrum, especially at the high-pollution level. The combined treatment of CA and fungi enhanced accumulation of Cd about 22-47 % and of Pb about 13-105 % in S. nigrum compared with the phytoextraction alone. However, S. nigrum was not shown to be a hyperaccumulator for Pb. Most enzyme activities were enhanced after remediation. The DCCA ordination graph showed increasing enzyme activity improvement by remediation in the order of phosphatase, amylase, catalase, dehydrogenase, and urease. Responses of soil enzyme activities were similar for both the addition of fungi and that of CA. In summary, results suggest that fungi and CA-assisted phytoextraction is a promising approach to restoring heavy metal polluted soil.

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Section: Discussionmentioning

confidence: 99%

Determining soil enzyme activities for the assessment of fungi and citric acid-assisted phytoextraction under cadmium and lead contamination

Mao

Tang

Feng

et al. 2015

Environ Sci Pollut Res

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“…Literature shows that enzymatic activity has been repeatedly used in investigations of the condition of the soil environment affected by various degrees of anthropopressure (Cele and Maboeta 2016;Joniec et al 2012Joniec et al , 2015Li et al 2008Li et al , 2009Margesin et al 2000;Taylor et al 2002;Zaborowska et al 2016). In their investigations, Li et al (2009) focused on the potential of analysis of FDA hydrolytic activity and the activity of eight hydrolases for assessment of a long-term impact of heavy metals on soil.…”

Section: Introductionmentioning

confidence: 99%

Enzymatic activity as an indicator of regeneration processes in degraded soil reclaimed with various types of waste

Joniec

2017

Int. J. Environ. Sci. Technol.

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Soil material sampled from a reclamation experiment established in a former ''Jeziórko'' Sulphur Mine was analysed. The reclamation was carried out on a soil-less substrate with a particle size distribution of slightly loamy sand characterised by high acidity and poor sorption capacity. The different variants of the experiment consisted in the addition of post-flotation lime, mineral fertilisation, sewage sludge, and mineral wool to the reclaimed soil-less substrate. Next, the plots prepared in this way were sown with a mixture of grasses. A plot without any reclamation treatments served as a control. The analyses consisted in the determination of soil enzymatic parameters. The results obtained revealed a positive effect of the reclamation treatments on the analysed properties. All wastes and combinations thereof introduced into the degraded substrate stimulated catalase, protease, and urease activity. The activity of the other enzymes, i.e. dehydrogenases and acid phosphatase, as well as the level of fluorescein diacetate hydrolysis increased only in objects treated with sewage sludge. In turn, in objects receiving mineral fertilisation, a decline in the acid phosphatase activity was noted. In objects treated with mineral wool, the level of stimulation was dependent on the mode of application of this additive. In general, a mixture of 500 m 3 ha -1 of mineral wool with the substrate proved more beneficial (with the exception of the acid phosphatase activity and fluorescein diacetate hydrolysis). A higher increase in the analysed enzymatic parameters was also found in objects treated with sewage sludge combined with post-flotation lime than in objects where sewage sludge was used alone.

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“…The microbial biomass is considered to be an important and labile fraction of soil organic matter that is involved in energy and nutrient cycling (Li et al, 2009). Soil biota size and activity are directly related to the amount and quality of carbon and other nutrients that are available from plant residues and organic amendments (Okur et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Changes in enzyme activities as affected by green-manure catch crops and mineral nitrogen fertilization

Piotrowska-Długosz¹,

Wilczewski²

2014

Zemdirbyste-Agriculture

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The estimation of soil microbial activity has been an important research issue because of the significant role that microorganisms play in nutrient cycling in soil. In . Soil samples were taken twice a year, before spring wheat sowing (March or April) and after harvesting (August). Generally, catch crops significantly influenced DH and CAT activities in all of the years of the investigation, while FDAH activity was affected only in 2007. There were higher DH and FDAH activities in catch crop treatment versus the control and only in some cases in field pea than in oilseed radish when both catch crops treatments were compared. DH and CAT activities were always higher in August than in March or April. Nitrogen fertilization influenced DH and FDAH activities only in 2007, while CAT activity was influenced during the entire experimental period (2006)(2007)(2008). Generally, the highest CAT activity was noted at N rates of 80 or 120 kg ha -1 year -1 . Chemical properties (organic carbon, total nitrogen, pH 1 M KCl) were not significantly affected by catch crops and inorganic N fertilization treatments. The studied indices of microbial biomass were significantly correlated with chemical soil properties.

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Microbial biomass, enzyme and mineralization activity in relation to soil organic C, N and P turnover influenced by acid metal stress

Cited by 173 publications

References 49 publications

Determining soil enzyme activities for the assessment of fungi and citric acid-assisted phytoextraction under cadmium and lead contamination

Determining soil enzyme activities for the assessment of fungi and citric acid-assisted phytoextraction under cadmium and lead contamination

Enzymatic activity as an indicator of regeneration processes in degraded soil reclaimed with various types of waste

Changes in enzyme activities as affected by green-manure catch crops and mineral nitrogen fertilization

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