Microbial community interactions determine the mineralization of soil organic phosphorus in subtropical forest ecosystems
ABSTRACTIn subtropical forest ecosystems with few phosphorus (P) inputs, P availability and forest productivity depend on soil organic P (Po) mineralization. However, the mechanisms by which the microbial community determines the status and fate of soil Po mineralization remain unclear. In the prese...
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| Format: | Article |
| Language: | English |
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American Society for Microbiology
2024-03-01
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| Series: | Microbiology Spectrum |
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| Online Access: | https://journals.asm.org/doi/10.1128/spectrum.01355-23 |
| _version_ | 1827329380535238656 |
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| author | Chang Pan Chenchen Sun Xinjing Qu Wenruinan Yu Jiahuan Guo Yuanchun Yu Xiaogang Li |
| author_facet | Chang Pan Chenchen Sun Xinjing Qu Wenruinan Yu Jiahuan Guo Yuanchun Yu Xiaogang Li |
| author_sort | Chang Pan |
| collection | DOAJ |
| description | ABSTRACTIn subtropical forest ecosystems with few phosphorus (P) inputs, P availability and forest productivity depend on soil organic P (Po) mineralization. However, the mechanisms by which the microbial community determines the status and fate of soil Po mineralization remain unclear. In the present study, soils were collected from three typical forest types: secondary natural forest (SNF), mixed planting, and monoculture forest of Chinese fir. The P fractions, Po-mineralization ability, and microbial community in the soils of different forest types were characterized. In addition, we defined Po-mineralizing taxa with the potential to interact with the soil microbial community to regulate Po mineralization. We found that a higher labile P content persisted in SNF and was positively associated with the Po-mineralization capacity of the soil microbial community. In vitro cultures of soil suspensions revealed that soil Po mineralization of three forest types was distinguished by differences in the composition of fungal communities. We further identified broad phylogenetic lineages of Po-mineralizing fungi with a high intensity of positive interactions with the soil microbial community, implying that the facilitation of Po-mineralizing taxa is crucial for soil P availability. Our dilution experiments to weaken microbial interactions revealed that in SNF soil, which had the highest interaction intensity of Po-mineralizing taxa with the community, Po-mineralization capacity was irreversibly lost after dilution, highlighting the importance of microbial diversity protection in forest soils. In summary, this study demonstrates that the interactions of Po-mineralizing microorganisms with the soil microbial community are critical for P availability in subtropical forests.IMPORTANCEIn subtropical forest ecosystems with few phosphorus inputs, phosphorus availability and forest productivity depend on soil organic phosphorus mineralization. However, the mechanisms by which the microbial community interactions determine the mineralization of soil organic phosphorus remain unclear. In the present study, soils were collected from three typical forest types: secondary natural forest, mixed planting, and monoculture forest of Chinese fir. We found that a higher soil labile phosphorus content was positively associated with the organic phosphorus mineralization capacity of the soil microbial community. Soil organic phosphorus mineralization of three forest types was distinguished by the differences in the composition of fungal communities. The positive interactions between organic phosphorus-mineralizing fungi and the rest of the soil microbial community facilitated organic phosphorus mineralization. This study highlights the importance of microbial diversity protection in forest soils and reveals the microbial mechanism of phosphorus availability maintenance in subtropical forest ecosystems. |
| first_indexed | 2024-03-07T15:33:19Z |
| format | Article |
| id | doaj.art-09549db05c9f46d0887dcc55c4c96305 |
| institution | Directory Open Access Journal |
| issn | 2165-0497 |
| language | English |
| last_indexed | 2024-03-07T15:33:19Z |
| publishDate | 2024-03-01 |
| publisher | American Society for Microbiology |
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| series | Microbiology Spectrum |
| spelling | doaj.art-09549db05c9f46d0887dcc55c4c963052024-03-05T14:04:36ZengAmerican Society for MicrobiologyMicrobiology Spectrum2165-04972024-03-0112310.1128/spectrum.01355-23Microbial community interactions determine the mineralization of soil organic phosphorus in subtropical forest ecosystemsChang Pan0Chenchen Sun1Xinjing Qu2Wenruinan Yu3Jiahuan Guo4Yuanchun Yu5Xiaogang Li6College of Ecology and Environment, Nanjing Forestry University, Nanjing, ChinaCollege of Ecology and Environment, Nanjing Forestry University, Nanjing, ChinaCollege of Ecology and Environment, Nanjing Forestry University, Nanjing, ChinaCollege of Ecology and Environment, Nanjing Forestry University, Nanjing, ChinaCollege of Ecology and Environment, Nanjing Forestry University, Nanjing, ChinaCollege of Ecology and Environment, Nanjing Forestry University, Nanjing, ChinaCollege of Ecology and Environment, Nanjing Forestry University, Nanjing, ChinaABSTRACTIn subtropical forest ecosystems with few phosphorus (P) inputs, P availability and forest productivity depend on soil organic P (Po) mineralization. However, the mechanisms by which the microbial community determines the status and fate of soil Po mineralization remain unclear. In the present study, soils were collected from three typical forest types: secondary natural forest (SNF), mixed planting, and monoculture forest of Chinese fir. The P fractions, Po-mineralization ability, and microbial community in the soils of different forest types were characterized. In addition, we defined Po-mineralizing taxa with the potential to interact with the soil microbial community to regulate Po mineralization. We found that a higher labile P content persisted in SNF and was positively associated with the Po-mineralization capacity of the soil microbial community. In vitro cultures of soil suspensions revealed that soil Po mineralization of three forest types was distinguished by differences in the composition of fungal communities. We further identified broad phylogenetic lineages of Po-mineralizing fungi with a high intensity of positive interactions with the soil microbial community, implying that the facilitation of Po-mineralizing taxa is crucial for soil P availability. Our dilution experiments to weaken microbial interactions revealed that in SNF soil, which had the highest interaction intensity of Po-mineralizing taxa with the community, Po-mineralization capacity was irreversibly lost after dilution, highlighting the importance of microbial diversity protection in forest soils. In summary, this study demonstrates that the interactions of Po-mineralizing microorganisms with the soil microbial community are critical for P availability in subtropical forests.IMPORTANCEIn subtropical forest ecosystems with few phosphorus inputs, phosphorus availability and forest productivity depend on soil organic phosphorus mineralization. However, the mechanisms by which the microbial community interactions determine the mineralization of soil organic phosphorus remain unclear. In the present study, soils were collected from three typical forest types: secondary natural forest, mixed planting, and monoculture forest of Chinese fir. We found that a higher soil labile phosphorus content was positively associated with the organic phosphorus mineralization capacity of the soil microbial community. Soil organic phosphorus mineralization of three forest types was distinguished by the differences in the composition of fungal communities. The positive interactions between organic phosphorus-mineralizing fungi and the rest of the soil microbial community facilitated organic phosphorus mineralization. This study highlights the importance of microbial diversity protection in forest soils and reveals the microbial mechanism of phosphorus availability maintenance in subtropical forest ecosystems.https://journals.asm.org/doi/10.1128/spectrum.01355-23phosphorus stressorganic phosphorusphosphorus-mineralizing microorganismChinese firafforestation |
| spellingShingle | Chang Pan Chenchen Sun Xinjing Qu Wenruinan Yu Jiahuan Guo Yuanchun Yu Xiaogang Li Microbial community interactions determine the mineralization of soil organic phosphorus in subtropical forest ecosystems Microbiology Spectrum phosphorus stress organic phosphorus phosphorus-mineralizing microorganism Chinese fir afforestation |
| title | Microbial community interactions determine the mineralization of soil organic phosphorus in subtropical forest ecosystems |
| title_full | Microbial community interactions determine the mineralization of soil organic phosphorus in subtropical forest ecosystems |
| title_fullStr | Microbial community interactions determine the mineralization of soil organic phosphorus in subtropical forest ecosystems |
| title_full_unstemmed | Microbial community interactions determine the mineralization of soil organic phosphorus in subtropical forest ecosystems |
| title_short | Microbial community interactions determine the mineralization of soil organic phosphorus in subtropical forest ecosystems |
| title_sort | microbial community interactions determine the mineralization of soil organic phosphorus in subtropical forest ecosystems |
| topic | phosphorus stress organic phosphorus phosphorus-mineralizing microorganism Chinese fir afforestation |
| url | https://journals.asm.org/doi/10.1128/spectrum.01355-23 |
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