Urease activity of microbial biomass in soils as affected by cropping systems

Klose, Susanne; Tabatabai, M. A.

doi:10.1007/s003740050645

Cited by 168 publications

(74 citation statements)

References 30 publications

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“…Usually, rotation provides a greater concentration and diversity of organic materials than the mono-cultural systems, which can improve microbial community diversity and stabilized microclimate to perform their function [20,21]. The RAPD analysis demonstrated that there is significant diversity on not only microbial communities between rhizosphere and non-rhizosphere soils of P. ginseng or P. quinquefolius, but also plants with different ages.…”

Section: Discussionmentioning

confidence: 99%

Microbial community diversity analysis of <i>Panax ginseng</i> rhizosphere and non-rhizosphere soil using randomly amplified polymorphic DNA method

Li¹,

Yin²,

Dang³

et al. 2012

OJGen

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DNA sequence diversities of soil microbial communities in rhizosphere and non-rhizosphere of 1 -6 years Panax ginseng were evaluated by random amplified polymorphic DNA (RAPD). Total genomic DNA of soil samples were amplified by twenty-four out of two hundred random primers. The products were separated in agarose gel, and 359 and 181 reliable fragments were generated, of which, 324 and 123 were polymorphic. The gene diversity index, Shannon's information index, and similarity coefficient were calculated, and results showed that, diversity of soil microbial community at DNA level was present. Furthermore, with the increasing of P. ginseng growing at one site, deference on soil microbial community DNA sequence between rhizosphere and non-rhizosphere tend to be more and more significant. In addition, RAPD technique was proved to be an effective tool to assess the diversity of soil microbial communities. From results we deduced that, the ecological function that performed by soil microbes may changed following the change of microbial community in rhizospheric and non-rhizospheric soils, and finally broke the balance of soil nutrition and energy cycle, soil spatial structure, microbial ecology etc.

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Section: Discussionmentioning

confidence: 99%

Microbial community diversity analysis of <i>Panax ginseng</i> rhizosphere and non-rhizosphere soil using randomly amplified polymorphic DNA method

Li¹,

Yin²,

Dang³

et al. 2012

OJGen

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“…The urease activity was analyzed according to Klose and Tabatabai (2000). The nitrate reductase activity was analyzed using KNO 3 as a substrate (Abdelmagid and Tabatabai 1987).…”

Section: Enzyme Activity Analysismentioning

confidence: 99%

Treatment performance and microorganism community structure of integrated vertical-flow constructed wetland plots for domestic wastewater

Chang

Dai

et al. 2012

Environ Sci Pollut Res

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In order to investigate the treatment performance and microorganism mechanism of IVCW for domestic wastewater in central of China, two parallel pilot-scale IVCW systems were built to evaluate purification efficiencies, microbial community structure and enzyme activities. The results showed that mean removal efficiencies were 81.03 % for COD, 51.66 % for total nitrogen (TN), 42.50 % for NH 4 + -N, and 68.01 % for TP. Significant positive correlations between nitrate reductase activities and TN and NH 4 + -N removal efficiencies, along with a significant correlation between substrate enzyme activity and operation time, were observed. Redundancy analysis demonstrated gram-negative bacteria were mainly responsible for urease and phosphatase activities, and also played a major role in dehydrogenase and nitrate reductase activities. Meanwhile, anaerobic bacteria, gram-negative bacteria, and saturated FA groups, gram-positive bacteria exhibited good correlations with the removal of COD (p00.388), N (p0 0.236), and TP (p00.074), respectively. The IVCW system can be used to treat domestic wastewater effectively.

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“…This build-up is a consequence of long rotation periods, and, together with root death, increases the amount and permanence of soil organic matter (Gatto et al, 2010;Viera et al, 2014). Organic matter has been reported as one of the main soil properties affecting the size and activity of the microbial population (Klose and Tabatabai, 2000;Carneiro et al, 2009). The significant role played by microorganisms in the sustainability and productivity of terrestrial systems has been widely investigated (Silva et al, 2004;Schulz et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Reforestation of a Degraded Area with Eucalyptus and Sesbania: Microbial Activity and Chemical Soil Properties

Paulucio

Silva

Martins

et al. 2017

Rev. Bras. Ciênc. Solo

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ABSTRACT:Mining activities generally affect soil quality, degrading it and creating the need for consistent environmental recovery efforts. This study evaluates the influence of monospecific and mixed stands of Sesbania virgata (S) and Eucalyptus camaldulensis (E) on the chemical properties and microbial activity of the soil in a degraded area by clay extraction in the northern part of the state of Rio de Janeiro, Brazil. Four treatments (100S:100 % Sesbania, 100E: 00 % Eucalyptus, 50S:50E: 50 % Sesbania + 50 % Eucalyptus, and DASV: a degraded area with spontaneous vegetation) were established according to a randomized complete block design with three replicates. Samples were collected in the 0.00-0.10 m layer in the rainy season (March) and the dry season (September). The properties evaluated were pH in water; contents of P, K + , Ca 2+ , Mg 2+ , Al 3+ , H+Al, N, and C; C/N ratio; total microbial activity (soil respiration -CO 2 emission); and total enzymatic activity (fluorescein diacetate hydrolysis). The reforestation of degraded areas by clay mining with the species S. virgata and E. camaldulensis either in monospecific or mixed stands increased the nutrient contents, C levels, and total microbial activity in the soil. It was possible to separate the planting systems (100S, 100E, 50S:50E) and the DASV using principal component analysis. In both seasons, soil C contents, chemical properties, and biological variables improved in the planted areas, in contrast with the DASV. The revegetation of degraded areas by mining improved the chemical and biological properties of the soil, leading to higher soil quality in revegetated areas compared to degraded areas with natural vegetation.

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Urease activity of microbial biomass in soils as affected by cropping systems

Cited by 168 publications

References 30 publications

Microbial community diversity analysis of <i>Panax ginseng</i> rhizosphere and non-rhizosphere soil using randomly amplified polymorphic DNA method

Microbial community diversity analysis of <i>Panax ginseng</i> rhizosphere and non-rhizosphere soil using randomly amplified polymorphic DNA method

Treatment performance and microorganism community structure of integrated vertical-flow constructed wetland plots for domestic wastewater

Reforestation of a Degraded Area with Eucalyptus and Sesbania: Microbial Activity and Chemical Soil Properties

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Urease activity of microbial biomass in soils as affected by cropping systems

Cited by 168 publications

References 30 publications

Microbial community diversity analysis of &lt;i&gt;Panax ginseng&lt;/i&gt; rhizosphere and non-rhizosphere soil using randomly amplified polymorphic DNA method

Microbial community diversity analysis of &lt;i&gt;Panax ginseng&lt;/i&gt; rhizosphere and non-rhizosphere soil using randomly amplified polymorphic DNA method

Treatment performance and microorganism community structure of integrated vertical-flow constructed wetland plots for domestic wastewater

Reforestation of a Degraded Area with Eucalyptus and Sesbania: Microbial Activity and Chemical Soil Properties

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Microbial community diversity analysis of <i>Panax ginseng</i> rhizosphere and non-rhizosphere soil using randomly amplified polymorphic DNA method

Microbial community diversity analysis of <i>Panax ginseng</i> rhizosphere and non-rhizosphere soil using randomly amplified polymorphic DNA method