No Significant Impact of Transgenic Cry1Ab/1Ac Cotton on Rhizosphere-Soil Enzyme Activities and Bacterial Communities

2017 ◽  
Vol 109 (4) ◽  
pp. 1271-1279
Author(s):  
Ming Xie ◽  
Yan-Jun Zhang ◽  
De-Liang Peng ◽  
Qian Li ◽  
Xin-Ping Hu ◽  
...  
Keyword(s):  
Enzyme Activities ◽  
Bacterial Communities ◽  
Rhizosphere Soil ◽  
Soil Enzyme ◽  
Soil Enzyme Activities

Pyrosequencing Reveals Soil Enzyme Activities and Bacterial Communities Impacted by Graphene and Its Oxides

2017 ◽  
Vol 65 (42) ◽  
pp. 9191-9199 ◽  
Author(s):  
Yan Rong ◽  
Yi Wang ◽  
Yina Guan ◽  
Jiangtao Ma ◽  
Zhiqiang Cai ◽  
...  
Keyword(s):  
Enzyme Activities ◽  
Bacterial Communities ◽  
Soil Enzyme ◽  
Soil Enzyme Activities

Effects of land use on the level, variation and spatial structure of soil enzyme activities and bacterial communities

2011 ◽  
Vol 43 (7) ◽  
pp. 1464-1473 ◽  
Author(s):  
K. Wallenius ◽  
H. Rita ◽  
A. Mikkonen ◽  
K. Lappi ◽  
K. Lindström ◽  
...  
Keyword(s):  
Land Use ◽  
Spatial Structure ◽  
Enzyme Activities ◽  
Bacterial Communities ◽  
Soil Enzyme ◽  
Soil Enzyme Activities ◽  
Level Variation ◽  
Effects Of Land Use

Effects of Helianthus annuus varieties on rhizosphere soil enzyme activities and microbial community functional diversity of saline-alkali land in Xinjiang

2017 ◽  
Vol 37 (5) ◽  
Author(s):  
张旭龙 ZHANG Xulong ◽  
马淼 MA Miao ◽  
吴振振 WU Zhenzhen ◽  
张志政 ZHANG Zhizheng ◽  
高睿 GAO Rui ◽  
...  
Keyword(s):  
Microbial Community ◽  
Helianthus Annuus ◽  
Functional Diversity ◽  
Enzyme Activities ◽  
Rhizosphere Soil ◽  
Soil Enzyme ◽  
Soil Enzyme Activities

scholarly journals Impacts of the transgenic CrylAc and CpTI insect-resistant cotton SGK321 on selected soil enzyme activities in the rhizosphere

2014 ◽  
Vol 60 (No. 9) ◽  
pp. 401-406 ◽  
Author(s):  
Zhang YJ ◽  
M. Xie ◽  
Li CY ◽  
G. Wu ◽  
Peng DL
Keyword(s):  
Enzyme Activities ◽  
Rhizosphere Soil ◽  
Principal Component ◽  
Northern China ◽  
Transgenic Cotton ◽  
Soil Enzyme ◽  
Growth Stages ◽  
Soil Enzyme Activities ◽  
Phosphatase Activities ◽  
Insect Resistant

Transgenic CrylAc and CpTI insect-resistant cotton SGK321 is widely adopted for many years in several regions of China, however the understanding of its potential effects on soil enzyme activities is not studied. The impacts of transgenic cotton SGK321 on dehydrogenase, urease and phosphatase activities in rhizosphere soil were investigated in a two-year field study in Northern China. Rhizosphere soil enzyme activities between transgenic cotton SGK321 and its non-transgenic parental cotton Shiyuan 321 were found to differ at senescence. However compared to the plant growth stages and cotton cultivar, the impacts of the transgenic trait were minor or transient. The principal component analysis also showed no significant or minor difference in the activities of dehydrogenase, urease and phosphatase in the rhizosphere soil of transgenic cotton SGK321 and its counterpart. Our results indicated that the transgenic cotton SGK321 has no apparent impact on dehydrogenase, urease and phosphatase activities in rhizosphere soil.

scholarly journals Assessing the Impact of Rice Cultivation and Off-Season Period on Dynamics of Soil Enzyme Activities and Bacterial Communities in Two Agro-Ecological Regions of Mozambique

Agronomy ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 694
Author(s):  
Obinna Ezeokoli ◽  
Valter Nuaila ◽  
Chinedu Obieze ◽  
Belo Muetanene ◽  
Irene Fraga ◽  
...  
Keyword(s):  
Enzyme Activities ◽  
Bacterial Communities ◽  
Soil Health ◽  
Soil Enzyme ◽  
Rice Cultivation ◽  
Health Determinants ◽  
Soil Productivity ◽  
Plant Growth Promoting Bacteria ◽  
Soil Enzyme Activities ◽  
The Impact

Soil ecosystem perturbation due to agronomic practices can negatively impact soil productivity by altering the diversity and function of soil health determinants. Currently, the influence of rice cultivation and off-season periods on the dynamics of soil health determinants is unclear. Therefore, soil enzyme activities (EAs) and bacterial community compositions in rice-cultivated fields at postharvest (PH) and after a 5-month off-season period (5mR), and fallow-fields (5-years-fallow, 5YF; 10-years-fallow, 10YF and/or one-year-fallow, 1YF) were assessed in two agroecological regions of Mozambique. EAs were mostly higher in fallow fields than in PH, with significant (p < 0.05) differences detected for β-glucosidase and acid phosphatase activities. Only β-glucosidase activity was significantly (p < 0.05) different between PH and 5mR, suggesting that β-glucosidase is responsive in the short-term. Bacterial diversity was highest in rice-cultivated soil and correlated with NO3−, NH4+ and electrical conductivity. Differentially abundant genera, such as Agromyces, Bacillus, Desulfuromonas, Gaiella, Lysobacter, Micromonospora, Norcadiodes, Rubrobacter, Solirubrobacter and Sphingomonas were mostly associated with fallow and 5mR fields, suggesting either negative effects of rice cultivation or the fallow period aided their recovery. Overall, rice cultivation and chemical parameters influenced certain EAs and shaped bacterial communities. Furthermore, the 5-month off-season period facilitates nutrient recovery and proliferation of plant-growth-promoting bacteria.

scholarly journals Effects of Allelochemicals, Soil Enzyme Activities, and Environmental Factors on Rhizosphere Soil Microbial Community of Stellera chamaejasme L. along a Growth-Coverage Gradient

2022 ◽  
Vol 10 (1) ◽  
pp. 158
Author(s):  
Jinan Cheng ◽  
Hui Jin ◽  
Jinlin Zhang ◽  
Zhongxiang Xu ◽  
Xiaoyan Yang ◽  
...  
Keyword(s):  
Microbial Community ◽  
Physicochemical Properties ◽  
Soil Microbial Community ◽  
Enzyme Activities ◽  
Rhizosphere Soil ◽  
Soil Enzyme ◽  
Soil Physicochemical Properties ◽  
Soil Enzyme Activities ◽  
Soil Microbial ◽  
Stellera Chamaejasme

Allelochemicals released from the root of Stellera chamaejasme L. into rhizosphere soil are an important factor for its invasion of natural grasslands. The aim of this study is to explore the interactions among allelochemicals, soil physicochemical properties, soil enzyme activities, and the rhizosphere soil microbial communities of S. chamaejasme along a growth-coverage gradient. High-throughput sequencing was used to determine the microbial composition of the rhizosphere soil sample, and high-performance liquid chromatography was used to detect allelopathic substances. The main fungal phyla in the rhizosphere soil with a growth coverage of 0% was Basidiomycetes, and the other sample plots were Ascomycetes. Proteobacteria and Acidobacteria were the dominant bacterial phyla in all sites. RDA analysis showed that neochamaejasmin B, chamaechromone, and dihydrodaphnetin B were positively correlated with Ascomycota and Glomeromycota and negatively correlated with Basidiomycota. Neochamaejasmin B and chamaechromone were positively correlated with Proteobacteria and Actinobacteria and negatively correlated with Acidobacteria and Planctomycetes. Allelochemicals, soil physicochemical properties, and enzyme activity affected the composition and diversity of the rhizosphere soil microbial community to some extent. When the growth coverage of S. chamaejasme reached the primary stage, it had the greatest impact on soil physicochemical properties and enzyme activities.

scholarly journals Silicon Application Modulates the Growth, Rhizosphere Soil Characteristics, and Bacterial Community Structure in Sugarcane

2021 ◽  
Vol 12 ◽  
Author(s):  
Quanqing Deng ◽  
Taobing Yu ◽  
Zhen Zeng ◽  
Umair Ashraf ◽  
Qihan Shi ◽  
...  
Keyword(s):  
Community Structure ◽  
Bacterial Community ◽  
Enzyme Activities ◽  
Bacterial Community Structure ◽  
Rhizosphere Soil ◽  
Chemical Properties ◽  
Soil Enzyme ◽  
Community Diversity ◽  
Soil Enzyme Activities ◽  
And Chemical Properties

Silicon (Si) deficiency, caused by acidic soil and rainy climate, is a major constraint for sugarcane production in southern China. Si application generally improves sugarcane growth; however, there are few studies on the relationships between enhanced plant growth, changes in rhizosphere soil, and bacterial communities. A field experiment was conducted to measure sugarcane agronomic traits, plant nutrient contents, rhizosphere soil enzyme activities and chemical properties, and the rhizosphere bacterial community diversity and structure of three predominant sugarcane varieties under two Si treatments, i.e., 0 and 200 kg of silicon dioxide (SiO2) ha−1 regarded as Si0 and Si200, respectively. Results showed that Si application substantially improved the sugarcane stalk fresh weight and Si, phosphorus (P), and potassium (K) contents comparing to Si0, and had an obvious impact on rhizosphere soil pH, available Si (ASi), available P (AP), available K (AK), total phosphorus (TP), and the activity of acid phosphatase. Furthermore, the relative abundances of Proteobacteria showed a remarkable increase in Si200, which may be the dominant group in sugarcane growth under Si application. Interestingly, the AP was noticed as a major factor that caused bacterial community structure differences between the two Si treatments according to canonical correspondence analysis (CCA). In addition, the association network analysis indicated that Si application enriched the rhizosphere bacterial network, which could be beneficial to sugarcane growth. Overall, appropriate Si application, i.e., 200 kg SiO2 ha−1 promoted sugarcane growth, changed rhizosphere soil enzyme activities and chemical properties, and bacterial community structures.

Response of soil enzyme activities and bacterial communities to the accumulation of microplastics in an acid cropped soil

2020 ◽  
Vol 707 ◽  
pp. 135634 ◽  
Author(s):  
Yufan Fei ◽  
Shunyin Huang ◽  
Haibo Zhang ◽  
Yazhi Tong ◽  
Dishi Wen ◽  
...  
Keyword(s):  
Enzyme Activities ◽  
Bacterial Communities ◽  
Soil Enzyme ◽  
Soil Enzyme Activities

Effects of metal oxide nanoparticles on soil enzyme activities and bacterial communities in two different soil types

2017 ◽  
Vol 18 (1) ◽  
pp. 211-221 ◽  
Author(s):  
Tingting You ◽  
Dandan Liu ◽  
Jing Chen ◽  
Zhongzhou Yang ◽  
Runzhi Dou ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Enzyme Activities ◽  
Bacterial Communities ◽  
Metal Oxide Nanoparticles ◽  
Soil Enzyme ◽  
Soil Types ◽  
Oxide Nanoparticles ◽  
Soil Enzyme Activities
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