Rhizospheric soil enzyme activities and phytominimg potential of Aeluropus lagopoides and Cyperus conglomeratus growing in contaminated soils at the banks of artificial lake of reclaimed wastewater

2017 ◽  
Vol 19 (11) ◽  
pp. 1017-1022
Author(s):  
Zahid Khorshid Abbas
Keyword(s):  
Enzyme Activities ◽  
Contaminated Soils ◽  
Soil Enzyme ◽  
Rhizospheric Soil ◽  
Soil Enzyme Activities ◽  
Reclaimed Wastewater ◽  
Artificial Lake ◽  
Aeluropus Lagopoides

scholarly journals Metagenomic analysis of cucumber rhizospheric microbiome provides insights into NaHCO3 stress mitigation by Rheinheimera pacifica NYJ

2020 ◽  
Author(s):  
Fenghui Wu ◽  
Songwen Li ◽  
Binghai Du ◽  
Xiu-Juan Wang ◽  
Xiaotong Han ◽  
...  
Keyword(s):  
Plant Growth ◽  
Enzyme Activities ◽  
Interaction Network ◽  
Soil Enzyme ◽  
Rhizospheric Soil ◽  
Soil Enzyme Activities ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Stress Related Genes ◽  
Immune Related Genes

Abstract Background: NaHCO3 in soil leads to alkalinization and causes stress in plants, thus hindering agricultural sustainability. A strain NYJ was identified as Rheinheimera pacifica and applied into cucumber-planted soil to mitigate NaHCO3 stress in this study. We aimed to detect the taxonomy and functional potential of rhizospheric microbiome affected by NaHCO3 stress and NYJ application, obtaining NaHCO3-tolerant microbes and exploring one mechanism underlining NaHCO3 stress mitigation by NYJ application.Results: The strain NYJ grew well under 0.01-0.06 g L-1 NaHCO3 and had plant growth-promoting capacity. Application of NYJ into NaHCO3-contaminated and cucumber-planted soil improved plant growth, increased relative water contents and osmotic potential of leaves, and decreased malonaldehyde and hydrogen peroxide contents in seedlings, mitigating NaHCO3 stress in cucumber. In cucumber rhizospheric soil, Proteobacteria, Actinobacteria, and Bacteroidetes of microbes were dominant phyla with 69, 17, and 6% of total abundance. To respond to NaHCO3 stress, 669 species and 208 genera of microbes were enriched in rhizospheric soil, while 190 sodium ion-related genes, 1242 osmotic stress-related genes, and 121 other stress-related genes from microbial genera including Pseudomonas showed the increased abundances. Under NaHCO3 stress, 26 microbial genera were distributed in connectors, the interaction network of rhizospheric microbes was changed, and soil enzyme activities were decreased. When NYJ being applied into the NaHCO3-contaminated soil, 1327 species and 487 genera of microbes were enriched than those under NaHCO3 stress alone. Meantime, soil enzyme activities were increased, while 2238 symbiont- and immune-related genes and 2434 plant growth-promoting genes including 16 genes encoding chitinase had the elevated abundances in microbial genera. Moreover, NYJ negatively interacted with one bacterial genus and positively interacted with 3 microbial genera under NaHCO3 stress. As a result, 25 bacterial genera were distributed in connectors, and microbial interaction network in rhizospheric soil was different from the one caused by NaHCO3 stress alone.Conclusions: 669 NaHCO3-tolerant species and 208 NaHCO3-tolerant genera of microbes were identified. NYJ application affected microbial community structure and interaction network in rhizospheric soil, increased the abundances of genes related to symbiont, immune, and plant growth-promoting traits in microbes, and activated soil enzymes, thereby mitigating NaHCO3 stress in cucumber.1 These authors contributed equally to this work.

Soil Enzyme Activities of Long-Term Reclaimed Wastewater-Irrigated Soils

2008 ◽  
Vol 37 (S5) ◽  
pp. S-36-S-42 ◽  
Author(s):  
Weiping Chen ◽  
Laosheng Wu ◽  
William T. Frankenberger ◽  
Andrew C. Chang
Keyword(s):  
Enzyme Activities ◽  
Soil Enzyme ◽  
Soil Enzyme Activities ◽  
Reclaimed Wastewater ◽  
Irrigated Soils

scholarly journals Effect of Different Washing Solutions on Soil Enzyme Activity and Microbial Community in Agricultural Soil Severely Contaminated With Cadmium

2021 ◽  
Author(s):  
Yu Zhang ◽  
Chunfa Wu ◽  
Shaopo Deng ◽  
Jinlu Zhang ◽  
Jinyu Hou ◽  
...  
Keyword(s):  
Enzyme Activity ◽  
Microbial Community ◽  
Relative Abundance ◽  
Enzyme Activities ◽  
Contaminated Soils ◽  
Agricultural Soil ◽  
Pearson Correlation ◽  
Geometric Mean ◽  
Soil Enzyme ◽  
Soil Enzyme Activities

Abstract Soil enzyme activities and microbial communities have a good response to the remediation effect of heavy metal-contaminated soils. To evaluate the effect of three commonly used washing agents, ferric chloride (FC), ethylenediamine-tetra- methylenephosphonic acid (EDTMP) and ethylenediamine tetraacetic acid (EDTA) on soil enzyme activities and microbial community in cadmium (Cd)- contaminated agricultural soil collected around the mining area. The soil enzyme activities, microbial community, chemical forms of Cd and some physicochemical properties of the soil washed with different washing solutions were determined after two months incubation. The results showed that the three washing solutions had moderate removal efficiencies (22.83%-37.56%) for Cd in the tested soil and the breakdown product of EDTMP has a certain stabilizing effect on Cd. The geometric mean and the integrated total enzyme activity index showed that soil washing with FC and EDTA were more beneficial to the restoration of biochemical functions than that with EDTMP. The relative abundance of Gemmatimonadetes in the soil washed with EDTA was significantly higher than that with FC and EDTMP. The relative abundance of Firmicutes in the soil washed with EDTMP was significantly increased, and the relative abundance of Bacteroidetes in the soil washed with FC was significantly decreased. Pearson correlation analysis and redundancy analysis (RDA) indicated that the three washing solutions affected soil enzyme activities and microbial community by altering soil nutrient, total Cd concentration and Cd fractions in soils.

Change Analysis of Enzyme Activity under Different Conditions of Film Remnant in Soil

2012 ◽  
Vol 518-523 ◽  
pp. 39-43
Author(s):  
Xiao Guang Zhao ◽  
Yuan Yuan Guan ◽  
Wen Yu Huang
Keyword(s):  
Enzyme Activity ◽  
Enzyme Activities ◽  
Scientific Basis ◽  
Soil Enzyme ◽  
Soil Microorganism ◽  
Soil Enzyme Activities ◽  
Change Analysis ◽  
Soil Material ◽  
The Relationship

In this paper, simulated experiments were performed in pots by using soil materials in different conditions of film remnant. Based on the research on soil microorganism quantity trends of soil enzyme activities were analyzed systematically: soil without film remnant, soil with film remnant for 5, 10, 15 and 20 years. By analyzing crop progress, the relationship with soil material was studied, in order to provide scientific basis for the variation laws between different conditions of film remnant and the activity of soil enzyme.

Sign in / Sign up

Export Citation Format

Share Document