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 Effects of the transgenic CrylAc and CpTI insect-resistant cotton SGK321 on rhizosphere soil microorganism populations in northern China

2014 ◽  
Vol 60 (No. 6) ◽  
pp. 285-289 ◽  
Author(s):  
Zhang YJ ◽  
M. Xie ◽  
Peng DL
Keyword(s):  
Plant Growth ◽  
Rhizosphere Soil ◽  
Principal Component ◽  
Northern China ◽  
Transgenic Cotton ◽  
Soil Microorganism ◽  
Growth Stages ◽  
Plant Growth Stages ◽  
The Impact ◽  
Insect Resistant

Transgenic CrylAc and CpTI insect-resistant cotton SGK321 has been widely adopted for many years in several regions of China, however the understanding of its potential effects on soil microorganisms is limited. The impact of transgenic cotton SGK321 on microorganism populations in rhizosphere soil was investigated. The numbers of bacteria, fungi, and actinomycetes were measured by counting colony-forming units after incubation on appropriate medium in a two-year field study in the northern China. Rhizosphere soil microorganism populations between transgenic cotton SGK321 and its non-transgenic parental cotton or conventional cotton were different at some plant growth stages and/or in some years. However compared to the plant growth stage and cotton cultivar, the impacts of the transgenic trait were slight or transient. The principal component analysis also showed no significant or minor difference in the numbers of bacteria, fungi, and actinomycetes in rhizosphere soil between transgenic cotton SGK321 and its non-transgenic parental cotton. These results suggest that the transgenic cotton SGK321 has no apparent impact on microorganism populations in rhizosphere soil.

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

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

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 SOIL ENZYME ACTIVITIES UNDER CROP ROTATIONS SYSTEMS IN A BROWN LUVIC SOIL

1970 ◽  
Vol 62 ◽  
Author(s):  
Alina Dora Samuel ◽  
C. Domuţa ◽  
Maria Şandor
Keyword(s):  
Soil Quality ◽  
Crop Rotation ◽  
Enzyme Activities ◽  
Farmyard Manure ◽  
Soil Enzyme ◽  
Enzymatic Activities ◽  
Crop Rotations ◽  
Soil Enzyme Activities ◽  
Phosphatase Activities

Actual and potential dehydrogenase and catalase and phosphatase activities were determined in the 0–20–, 20–40– and 40–60–cm layers of a brown luvic soil submitted to a complex tillage and crop rotation experiment. The soil under maize or wheat was more enzyme-active in the 6– than in the 2–crop rotation. In the 2–crop rotation, higher enzymatic activities were registered under wheat than under maize. In the 6–crop rotation, the enzymatic indicators of soil quality decreased, depending on the nature of crops and kind of fertilisers (mineral NP or farmyard manure), in the following order: farmyard-manured maize > minerally fertilised (m.f.) soybean > m.f. wheat > m.f. maize (plot 4) > m.f. maize (plot 1) > m.f. clover.

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.

scholarly journals Soil Enzyme Activities in Pinus tabuliformis (Carriére) Plantations in Northern China

Forests ◽  
2016 ◽  
Vol 7 (12) ◽  
pp. 112 ◽  
Author(s):  
Weiwei Wang ◽  
Deborah Page-Dumroese ◽  
Ruiheng Lv ◽  
Chen Xiao ◽  
Guolei Li ◽  
...  
Keyword(s):  
Enzyme Activities ◽  
Northern China ◽  
Soil Enzyme ◽  
Soil Enzyme Activities ◽  
Pinus Tabuliformis
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