Diversity of methanogenic archaeal communities in Japanese paddy field ecosystem, estimated by denaturing gradient gel electrophoresis

2010 ◽  
Vol 46 (4) ◽  
pp. 343-353 ◽  
Author(s):  
Takeshi Watanabe ◽  
Makoto Kimura ◽  
Susumu Asakawa

2011 ◽  
Vol 57 (6) ◽  
pp. 504-513 ◽  
Author(s):  
Min Liu ◽  
Tian Xiao ◽  
Ying Wu ◽  
Feng Zhou ◽  
Wuchang Zhang

The archaeal community and the effects of environmental factors on microbial community distribution were investigated at five sampling sites in the Changjiang Estuary hypoxia area and the adjacent East China Sea in June, August, and October 2006. Profiles of the archaeal communities were generated by denaturing gradient gel electrophoresis of 16S rRNA genes followed by DNA sequence analysis, and the results were analyzed by multivariate statistical analysis. Denaturing gradient gel electrophoresis band patterns were analyzed by cluster analysis to assess temporal changes in the genetic diversity of the archaeal communities. Most of the October samples grouped together separately from those of June and August. Analysis of DNA sequences revealed that the dominant archaeal groups in the Changjiang Estuary hypoxia area and the adjacent East China Sea were affiliated with Euryarchaeota (mainly marine group II) and Crenarchaeota. The effects of environmental factors on the archaeal community distribution were analyzed by the ordination technique of canonical correspondence analysis. Salinity had a significant effect on the archaeal community composition.



2001 ◽  
Vol 37 (1) ◽  
pp. 45-54 ◽  
Author(s):  
Guadalupe Piñar ◽  
Cesareo Saiz-Jimenez ◽  
Claudia Schabereiter-Gurtner ◽  
Maria Teresa Blanco-Varela ◽  
Werner Lubitz ◽  
...  




2020 ◽  
Vol 51 (2) ◽  
pp. 125-146
Author(s):  
Nasiruddin Nasiruddin ◽  
Yu Zhangxin ◽  
Ting Zhao Chen Guangying ◽  
Minghui Ji

We grew cucumber in pots in greenhouse for 9-successive cropping cycles and analyzed the rhizosphere Pseudomonas spp. community structure and abundance by PCR-denaturing gradient gel electrophoresis and quantitative PCR. Results showed that continuous monocropping changed the cucumber rhizosphere Pseudomonas spp. community. The number of DGGE bands, Shannon-Wiener index and Evenness index decreased during the 3rd cropping and thereafter, increased up to the 7th cropping, however, however, afterwards they decreased again. The abundance of Pseudomonas spp. increased up to the 5th successive cropping and then decreased gradually. These findings indicated that the structure and abundance of Pseudomonas spp. community changed with long-term cucumber monocropping, which might be linked to soil sickness caused by its continuous monocropping.



Sign in / Sign up

Export Citation Format

Share Document