Biochar soil amendment increased bacterial but decreased fungal gene abundance with shifts in community structure in a slightly acid rice paddy from Southwest China

2013 ◽  
Vol 71 ◽  
pp. 33-44 ◽  
Author(s):  
Junhui Chen ◽  
Xiaoyu Liu ◽  
Jinwei Zheng ◽  
Bin Zhang ◽  
Haifei Lu ◽  
...  
Keyword(s):  
Community Structure ◽  
Soil Amendment ◽  
Southwest China ◽  
Rice Paddy ◽  
Gene Abundance ◽  
Biochar Soil Amendment ◽  
Fungal Gene

scholarly journals Microbial community structure with trends in methylation gene diversity and abundance in mercury-contaminated rice paddy soils in Guizhou, China

2018 ◽  
Vol 20 (4) ◽  
pp. 673-685 ◽  
Author(s):  
Tatiana A. Vishnivetskaya ◽  
Haiyan Hu ◽  
Joy D. Van Nostrand ◽  
Ann M. Wymore ◽  
Xiaohang Xu ◽  
...  
Keyword(s):  
Community Structure ◽  
Microbial Community ◽  
Microbial Community Structure ◽  
Gene Diversity ◽  
Rice Paddy ◽  
Paddy Soils ◽  
Rice Paddies ◽  
Sulfate Reducing ◽  
Rice Paddy Soils ◽  
Reducing Bacteria

Sulfate-reducing bacteria and methanogens are the primary Hg-methylators in Chinese rice paddies.

Evaluation of the potential risks of heavy metal contamination in rice paddy soils around an abandoned Hg mine area in Southwest China

2019 ◽  
Vol 39 (1) ◽  
pp. 85-95 ◽  
Author(s):  
Bayou Adlane ◽  
Zhidong Xu ◽  
Xiaohang Xu ◽  
Longchao Liang ◽  
Jialiang Han ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Contamination ◽  
Southwest China ◽  
Heavy Metal Contamination ◽  
Rice Paddy ◽  
Paddy Soils ◽  
Mine Area ◽  
Potential Risks ◽  
Rice Paddy Soils

scholarly journals Impact of Body Mass Index (BMI) on the Effect of a Lactobacillus Rhamnosus GG (LGG)/Bifidobacterium Animalis Subspecies Lactis BB-12 (BB-12) Combination on Gut Microbiota (P20-023-19)

2019 ◽  
Vol 3 (Supplement_1) ◽  
Author(s):  
Debra Poutsiaka ◽  
Lori Stern ◽  
Virginia Riquelme ◽  
Emily Hollister ◽  
Julia Cope ◽  
...  
Keyword(s):  
Community Structure ◽  
Gut Microbiota ◽  
Lactobacillus Rhamnosus ◽  
Detailed Examination ◽  
Global Changes ◽  
Shotgun Metagenomics ◽  
Gene Abundance ◽  
Funding Sources ◽  
And Function ◽  
Relative Gene

Abstract Objectives This exploratory study builds upon an earlier study of probiotic supplementation1 to assess the effects of a probiotic combination (P) of LGG and BB-12 on human gut microbiota composition and function, and to uncover an association with BMI. Methods Healthy subjects ingested P for 21 days (n = 18, P group) or did not (n = 7, C group). Fecal samples obtained at baseline (D_0) and after 21 days of supplementation (D_21) underwent 16S ribosomal RNA gene and shotgun metagenomics sequencing to characterize the bacterial and archaeal communities to the genus/species level and identify functional community genes. Results Following P ingestion, no global differences in microbiota community structure or relative gene abundance were detected. In targeted analyses, the abundances of LGG and BB-12 in the P group at D_21 increased in a statistically significant manner as the BMI decreased (Spearman correlation, P = 0.04 and P = 0.01, respectively). The relative abundance of LGG but not BB-12 appeared increased in P subjects at D_21 with BMI < 25 compared to BMI > 25 (P = 0.09). P group subjects with BMI < 25 demonstrated trends toward or statistically significant increases in the relative abundances of 5 genes involved with flagellar structure (KEGG orthologs K02422, P = 0.04; K03406, P = 0.06; K02407, P = 0.08; K02397, P = 0.08; K02396, P = 0.09) at D_21 compared to those with BMI > 25. No such differences were observed for the C group nor were there differences in relative gene abundance at D_0 in the P group with BMI < 25 vs BMI > 25. Conclusions We observed no global changes in the fecal microbial community structure or function with P ingestion in this sample of healthy persons. However, we did observe patterns suggestive of a potential link between BMI and the response of the gut microbiota to P. Although our results are based on a small number of subjects, they are in line with previous findings related to LGG supplementation and the expression of flagellar genes2. We agree with other recent reports that future studies would benefit from a detailed examination of the transcriptome, proteome and/or metabolome to better understand the potential impact of probiotics on the gut microbiota, and the mechanism of the effect of BMI. Funding Sources Pfizer Inc.

Sign in / Sign up

Export Citation Format

Share Document