Diversity and Assembly of Bacteria Community in Lime Soil under Different Karst Land-Use Types
Bacteria play an important role as decomposers in karst ecosystems, which can be associated with karst soil and plants, promoting the cycling of nutrients between plants and soil. To reveal the diversity and structure of soil bacterial communities in some karst land-use types after the Grain for Gre...
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MDPI AG
2023-03-01
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| Online Access: | https://www.mdpi.com/1999-4907/14/4/672 |
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| author | Xiaoxiao Zou Kai Yao Fuping Zeng Chen Zhang Zhaoxia Zeng Hao Zhang |
| author_facet | Xiaoxiao Zou Kai Yao Fuping Zeng Chen Zhang Zhaoxia Zeng Hao Zhang |
| author_sort | Xiaoxiao Zou |
| collection | DOAJ |
| description | Bacteria play an important role as decomposers in karst ecosystems, which can be associated with karst soil and plants, promoting the cycling of nutrients between plants and soil. To reveal the diversity and structure of soil bacterial communities in some karst land-use types after the Grain for Green pattern, soil samples were collected from different land-use types (crops, grasses, and plantations) for analysis. Changes in the structure and assembly of karst soil bacteria were examined using 16S rRNA Illumina sequencing and soil chemical properties. We found that 18 years after the Grain for Green program, the soil chemical properties of available nitrogen (AN), total phosphorus (TP), total nitrogen (TN), and soil organic matter (SOM) of grassland were significantly different from those of farmland. The soil chemical properties in plantations were also significantly lower than those in farmlands. Different land-use types did not significantly affect the soil bacterial community structure. Actinobacteria, Proteobacteria, Chloroflexi, and Acidobacteria were the dominant phyla in all the plots. The relative abundance of Proteobacteria was higher in grasslands and plantations than in farmlands, whereas that of Actinobacteria was lower in grasslands. Furthermore, no significant correlations were observed between the soil chemical factors and soil bacterial groups at the genus level. The null model analysis indicated that dispersal limitations in stochastic processes predominated for the different land-use systems. Combined with previous analyses of the factors driving bacterial core species diversity in karst soils, we speculated that stochastic processes play a more important role in the construction of core bacterial species in restored karst soils at the plot scale. |
| first_indexed | 2024-03-11T05:01:14Z |
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| institution | Directory Open Access Journal |
| issn | 1999-4907 |
| language | English |
| last_indexed | 2024-03-11T05:01:14Z |
| publishDate | 2023-03-01 |
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| series | Forests |
| spelling | doaj.art-83239cf0fbbd4d61b66daee3fe915ba52023-11-17T19:16:12ZengMDPI AGForests1999-49072023-03-0114467210.3390/f14040672Diversity and Assembly of Bacteria Community in Lime Soil under Different Karst Land-Use TypesXiaoxiao Zou0Kai Yao1Fuping Zeng2Chen Zhang3Zhaoxia Zeng4Hao Zhang5School of Life Science, Guizhou Normal University, Guiyang 550025, ChinaSchool of Life Science, Guizhou Normal University, Guiyang 550025, ChinaKey Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, ChinaKey Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, ChinaKey Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, ChinaKey Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, ChinaBacteria play an important role as decomposers in karst ecosystems, which can be associated with karst soil and plants, promoting the cycling of nutrients between plants and soil. To reveal the diversity and structure of soil bacterial communities in some karst land-use types after the Grain for Green pattern, soil samples were collected from different land-use types (crops, grasses, and plantations) for analysis. Changes in the structure and assembly of karst soil bacteria were examined using 16S rRNA Illumina sequencing and soil chemical properties. We found that 18 years after the Grain for Green program, the soil chemical properties of available nitrogen (AN), total phosphorus (TP), total nitrogen (TN), and soil organic matter (SOM) of grassland were significantly different from those of farmland. The soil chemical properties in plantations were also significantly lower than those in farmlands. Different land-use types did not significantly affect the soil bacterial community structure. Actinobacteria, Proteobacteria, Chloroflexi, and Acidobacteria were the dominant phyla in all the plots. The relative abundance of Proteobacteria was higher in grasslands and plantations than in farmlands, whereas that of Actinobacteria was lower in grasslands. Furthermore, no significant correlations were observed between the soil chemical factors and soil bacterial groups at the genus level. The null model analysis indicated that dispersal limitations in stochastic processes predominated for the different land-use systems. Combined with previous analyses of the factors driving bacterial core species diversity in karst soils, we speculated that stochastic processes play a more important role in the construction of core bacterial species in restored karst soils at the plot scale.https://www.mdpi.com/1999-4907/14/4/672karstsoil bacteriacommunity diversitynull modelsouthwest China |
| spellingShingle | Xiaoxiao Zou Kai Yao Fuping Zeng Chen Zhang Zhaoxia Zeng Hao Zhang Diversity and Assembly of Bacteria Community in Lime Soil under Different Karst Land-Use Types Forests karst soil bacteria community diversity null model southwest China |
| title | Diversity and Assembly of Bacteria Community in Lime Soil under Different Karst Land-Use Types |
| title_full | Diversity and Assembly of Bacteria Community in Lime Soil under Different Karst Land-Use Types |
| title_fullStr | Diversity and Assembly of Bacteria Community in Lime Soil under Different Karst Land-Use Types |
| title_full_unstemmed | Diversity and Assembly of Bacteria Community in Lime Soil under Different Karst Land-Use Types |
| title_short | Diversity and Assembly of Bacteria Community in Lime Soil under Different Karst Land-Use Types |
| title_sort | diversity and assembly of bacteria community in lime soil under different karst land use types |
| topic | karst soil bacteria community diversity null model southwest China |
| url | https://www.mdpi.com/1999-4907/14/4/672 |
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