The effect of storage on microbial activity and bacterial community structure of drained and flooded paddy soil

2014 ◽  
Vol 15 (4) ◽  
pp. 880-889 ◽  
Author(s):  
Juan Wang ◽  
Stephen J. Chapman ◽  
Huaiying Yao
Keyword(s):  
Community Structure ◽  
Bacterial Community ◽  
Microbial Activity ◽  
Paddy Soil ◽  
Bacterial Community Structure ◽  
Flooded Paddy Soil

scholarly journals Spatial Changes in the Bacterial Community Structure along a Vertical Oxygen Gradient in Flooded Paddy Soil Cores

2000 ◽  
Vol 66 (2) ◽  
pp. 754-762 ◽  
Author(s):  
Heiner Lüdemann ◽  
Inko Arth ◽  
Werner Liesack
Keyword(s):  
Community Structure ◽  
Bacterial Community ◽  
16S Rrna ◽  
Paddy Soil ◽  
Bacterial Community Structure ◽  
Soil Cores ◽  
Oxygen Gradient ◽  
Community Fingerprint ◽  
Flooded Paddy Soil ◽  
Anoxic Zones

ABSTRACT Molecular ecology techniques were applied to assess changes in the bacterial community structure along a vertical oxygen gradient in flooded paddy soil cores. Microsensor measurements showed that oxygen was depleted from 140 μM at the floodwater/soil interface to nondetectable amounts at a depth of approximately 2.0 mm and below. Bacterial 16S rRNA gene (rDNA)-based community fingerprint patterns were obtained from 200-μm-thick soil slices of both the oxic and anoxic zones by using the T-RFLP (terminal restriction fragment length polymorphism) technique. The fingerprints revealed a tremendous shift in the community patterns in correlation to the oxygen depletion measured with depth. 16S rDNA clone sequences recovered from the oxic or anoxic zone directly corresponded to those terminal restriction fragments which were highly characteristic of the respective zone. Comparative sequence analysis of these clones identified members of the α and β subclasses of Proteobacteria as the abundant populations in the oxic zone. In contrast, members of clostridial cluster I were determined to be the predominant bacterial group in the oxygen-depleted soil. The extraction of total RNA followed by reverse transcription-PCR of the bacterial 16S rRNA and T-RFLP analysis resulted for both oxic and anoxic zones of flooded soil cores in community fingerprint patterns similar to those obtained by the rDNA-based analysis. This finding suggests that the microbial groups detected on the rDNA level are the metabolically active populations within the oxic and anoxic soil slices examined.

scholarly journals The Bacterial Community Structure and Microbial Activity in a Traditional Organic Milpa Farming System Under Different Soil Moisture Conditions

2018 ◽  
Vol 9 ◽  
Author(s):  
Iván P. Moreno-Espíndola ◽  
María J. Ferrara-Guerrero ◽  
Marco L. Luna-Guido ◽  
Daniel A. Ramírez-Villanueva ◽  
Arit S. De León-Lorenzana ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Community Structure ◽  
Bacterial Community ◽  
Microbial Activity ◽  
Bacterial Community Structure ◽  
Farming System ◽  
Moisture Conditions ◽  
Milpa Farming

scholarly journals Bacterial communities in paddy soil and ditch sediment under rice-crab co-culture system

AMB Express ◽  
2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Xu Jiang ◽  
Hui Ma ◽  
Qing-lei Zhao ◽  
Jun Yang ◽  
Cai-yun Xin ◽  
...  
Keyword(s):  
Community Structure ◽  
Bacterial Community ◽  
Relative Abundance ◽  
Paddy Soil ◽  
Bacterial Communities ◽  
Bacterial Community Structure ◽  
High Throughput Sequencing ◽  
Available Phosphorus ◽  
Uncultured Bacterium ◽  
Ditch Sediment

AbstractAs an important form of sustainable agriculture, rice-crab (Eriocheir sinensis) co-culture is rapid developing worldwide. However, the knowledge on the bacterial communities of the different components of the system is limited. In this study, we investigated the bacterial community structure in paddy soil and ditch sediment by using high-throughput sequencing technology. The results showed that compared with the ditch sediment, the content of NH4+-N in paddy soil decreased by 62.31%, and the content of AP (available phosphorus) increased by 172.02% (P < 0.05). The most abundant phyla in paddy soil and ditch sediment were Proteobacteria, Bacteroidetes and Chloroflexi, whose relative abundance was above 65%. Among the dominant genera, the relative abundance of an uncultured bacterium genus of Saprospiraceae and an uncultured bacterium genus of Lentimicrobiaceae in paddy soil was significantly lower than ditch sediment (P < 0.05). Alpha diversity indicated that the bacterial diversity of paddy soil and ditch sediment was similar. The bacterial community structure was affected by the relative abundance of bacteria, not the species of bacteria. Redundancy analysis (RDA) showed that the bacterial communities in paddy soil and ditch sediment were correlated with physicochemical properties. Our findings showed that the bacterial community structure was distinct in paddy soil and ditch sediment under rice-crab co-culture probably due to their different management patterns. These results can provide theoretical support for improving rice-crab co-culture technology.

scholarly journals Continental-Scale Paddy Soil Bacterial Community Structure, Function and Biotic Interaction

2020 ◽  
Author(s):  
Zhijian Zhang ◽  
Hong-Yi Li ◽  
Hang Wang ◽  
Xing-Hua Tao ◽  
Xian-Zhe Wang ◽  
...  
Keyword(s):  
Community Structure ◽  
Microbial Community ◽  
Environmental Factors ◽  
Bacterial Community ◽  
Paddy Soil ◽  
Bacterial Community Structure ◽  
Soil Bacteria ◽  
Paddy Soils ◽  
Continental Scale ◽  
Soil Sustainability

Abstract Background: Rice paddy soil-associated microbiota participate in biogeochemical processes that underpin rice yield and soil sustainability, yet continental-scale biogeographic patterns of paddy soil microbiota remain elusive. Here, the soil bacteria of four typical Chinese rice-growing regions were characterized over large-scale space and compared with adjacent non-paddy soils.Results: The geographic patterns of paddy soil bacteria were significantly different from non-paddy soils, with lower alpha diversity, unique taxonomic and functional composition, and distinct co-occurrence network topology. Both stochastic and deterministic processes shaped soil bacteria assembly, but paddy exhibited a stronger deterministic signature than non-paddy samples, especially due to the roles of climate determinants. The continental biogeographic variance in bacterial community structure was driven by the competition between two mutually-exclusive bacterial modules in the co-occurrence network, and suggested antagonistic species-to-species interactions as potential selective forces may greatly shape their community structures. Keystone taxa identified in network models, such as Actinobacteria, Chloroflexi, and Proteobacteria, were demonstrated to be preferentially affected by environmental factors than other community members and showed high sensitivity to environmental changes, whereby the environmental factors greatly shaped the paddy soil bacterial communities by leveraging changes in keystones.Conclusions: The strong interplay between biotic/abiotic factors may greatly construct paddy soil microbial community and their uniqueness as compared with non-paddy soils. Microbial biogeographical analyses with novel insights into underlying determinants investigated on intensively-cultivated paddy field soils may aid in elucidating microbial changes subjected to land-use changes following the transformation between natural and agro-ecosystem, and also facilitate microbial community manipulation for better crop productivity and soil sustainability worldwide.

Succession of bacterial community structure and diversity in a paddy soil oxygen gradient

2005 ◽  
Vol 7 (3) ◽  
pp. 382-395 ◽  
Author(s):  
Matthias Noll ◽  
Diethart Matthies ◽  
Peter Frenzel ◽  
Manigee Derakshani ◽  
Werner Liesack
Keyword(s):  
Community Structure ◽  
Bacterial Community ◽  
Paddy Soil ◽  
Bacterial Community Structure ◽  
Soil Oxygen ◽  
Oxygen Gradient

scholarly journals Effect of Sheep Urine Deposition on the Bacterial Community Structure in an Acidic Upland Grassland Soil

2006 ◽  
Vol 72 (11) ◽  
pp. 7231-7237 ◽  
Author(s):  
Deirdre Rooney ◽  
Nabla Kennedy ◽  
Louise Deering ◽  
Deirdre Gleeson ◽  
Nicholas Clipson
Keyword(s):  
Community Structure ◽  
Microbial Biomass ◽  
Bacterial Community ◽  
Microbial Activity ◽  
Community Composition ◽  
Plant Species ◽  
Bacterial Community Structure ◽  
Bacterial Community Composition ◽  
High Concentrations ◽  
Sheep Urine

ABSTRACT The effect of the addition of synthetic sheep urine (SSU) and plant species on the bacterial community composition of upland acidic grasslands was studied using a microcosm approach. Low, medium, and high concentrations of SSU were applied to pots containing plant species typical of both unimproved (Agrostis capillaris) and agriculturally improved (Lolium perenne) grasslands, and harvests were carried out 10 days and 50 days after the addition of SSU. SSU application significantly increased both soil pH (P < 0.005), with pH values ranging from pH 5.4 (zero SSU) to pH 6.4 (high SSU), and microbial activity (P < 0.005), with treatment with medium and high levels of SSU displaying significantly higher microbial activity (triphenylformazan dehydrogenase activity) than treatment of soil with zero or low concentrations of SSU. Microbial biomass, however, was not significantly altered by any of the SSU applications. Plant species alone had no effect on microbial biomass or activity. Bacterial community structure was profiled using bacterial automated ribosomal intergenic spacer analysis. Multidimensional scaling plots indicated that applications of high concentrations of SSU significantly altered the bacterial community composition in the presence of plant species but at different times: 10 days after application of high concentrations of SSU, the bacterial community composition of L. perenne-planted soils differed significantly from those of any other soils, whereas in the case of A. capillaris-planted soils, the bacterial community composition was different 50 days after treatment with high concentrations of SSU. Canonical correspondence analysis also highlighted the importance of interactions between SSU addition, plant species, and time in the bacterial community structure. This study has shown that the response of plants and bacterial communities to sheep urine deposition in grasslands is dependent on both the grass species present and the concentration of SSU applied, which may have important ecological consequences for agricultural grasslands.

Sign in / Sign up

Export Citation Format

Share Document