| Variation of bacterial communities in the saline\|alkaline soil of meadow on Songnen Plain |
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| DOI：10.7606/j.issn.1000-7601.2020.02.09 |
| Key Words: salinization degree of soil bacterial community structure soil physical and chemical propeties vegetation cover density Songen Plain |
| Author Name | Affiliation | | XIANG Junliang | College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | LIU Quan | College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | SHEN Yongrui | College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | WANG Jiaqi | College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | ZHANG Xingmei | College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | WANG Peng | College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | YIN Kuide | College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China |
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| Abstract: |
| The high\|throughput sequencing technology was used to analyze the bacteria community structure, which was obtained at three different degrees of saline\|alkali soils on Songnen saline\|alkali steppe. The results showed that the physical and chemical properties of the three saline\|alkali soils were significantly different. The pH and alkalinity increased with the increase of salinization, while the content of alkali nitrogen, available potassium, and organic matter decreased. A total of 2841 OTUs were obtained from the three saline\|alkali soils, belonging to 39 bacterial phyla, and the dominant phyla at the different saline\|alkali steppes, including Acidobacteria, Proteobacteria, Crenarchaeota, Actinobacteria, Chloroflexi, Planctomycetes, Bacteroidetes, Gemmatimonadetes, Verrucomicrobia, Nitrospirae. Acidobacteria (32.28%), Proteobacteria (19.87%), and Actinobacteria (22.57%) were the main bacteria in SS, MS, and HS groups, respectively. The results of RDA indicated that Acidobacteria, Crenarchaeota, Nitrospirae, Euryarchaeota, and TM7 positively correlated to the alkaline nitrogen, organic matter and available potassium. Verrucomicrobia was positively correlated to the available phosphorus. Actinobacteria, Planctomycetes, Bacteroidetes, Gemmatimonadetes, and Firmicutes had the positive relationship with the pH and ESP. |
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