| Title | Linkages of litter and soil C:N:P stoichiometry with soil microbial resource limitation and community structure in a subtropical broadleaf forest invaded by Moso bamboo |
| Publication Type | Journal Article |
| Year of Publication | 2021 |
| Authors | Zhao Y.Z, Liang C.F, Shao S., Chen J.H, Qin H., Xu Q.F |
| Journal | Plant and Soil |
| Pagination | 18 |
| Type of Article | Article; Early Access |
| ISBN Number | 0032-079X |
| Accession Number | WOS:000659385700002 |
| Keywords | Agriculture, carbon use efficiency, carbon-use efficiency, community, Ecoenzymatic stoichiometry, enzyme-activities, fatty-acid profiles, Fungal, nitrogen, NUTRIENT AVAILABILITY, organic-carbon, paddy, phosphorus, Plant invasion, Plant Sciences, soil, Stoichiometric imbalance |
| Abstract | Aims Invasive plants not only alter aboveground biodiversity but also belowground microbial community composition to facilitate their growth and competitiveness. However, how plant invasion affects soil microbial resource limitation and metabolic activity, and their linkages with litter and soil stoichiometries remain largely unknown. Methods We investigated the carbon (C): nitrogen (N): phosphorus (P) stoichiometries of litter, soil, microbe and extracellular enzymes, composition of main microbial groups and substrate utilization rate in a subtropical forest invaded by Moso bamboo (Phyllostachys edulis) and those in adjacent broadleaf and mixed bamboo-broadleaf forests. Results Bamboo invasion significantly decreased annual litter production, litter C: P and N: P ratios, and soil C:N and C:P ratios, whereas increased microbial biomass C:N and C:P ratios, resulting in decreased C:N and C:P imbalances between soil microorganisms and their resources. Bamboo invasion decreased the N and P acquiring enzymes activities, mitigated the status of microbial N and P limitation as indicated by enzymatic stoichiometry, and caused a higher C use efficiency. Soil microbial community structure was shifted towards a lower fungi: bacteria (F:B) ratio in bamboo forest. Bamboo forest soil showed a lower capacity of microbes to use N-rich resources in comparison to C-rich resources. Structural equation modeling suggested a direct and negative effect of C:N imbalance on microbial N limitation and metabolic capacity. Conclusions This study suggests the importance of stoichiometric imbalance between decomposers and their resources in regulating soil microbial community structure and enzyme activities following plant invasion.
|
| Short Title | Plant SoilPlant Soil |
| Alternate Journal | Plant Soil |
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[biblio_abst_e] => Aims Invasive plants not only alter aboveground biodiversity but also belowground microbial community composition to facilitate their growth and competitiveness. However, how plant invasion affects soil microbial resource limitation and metabolic activity, and their linkages with litter and soil stoichiometries remain largely unknown. Methods We investigated the carbon (C): nitrogen (N): phosphorus (P) stoichiometries of litter, soil, microbe and extracellular enzymes, composition of main microbial groups and substrate utilization rate in a subtropical forest invaded by Moso bamboo (Phyllostachys edulis) and those in adjacent broadleaf and mixed bamboo-broadleaf forests. Results Bamboo invasion significantly decreased annual litter production, litter C: P and N: P ratios, and soil C:N and C:P ratios, whereas increased microbial biomass C:N and C:P ratios, resulting in decreased C:N and C:P imbalances between soil microorganisms and their resources. Bamboo invasion decreased the N and P acquiring enzymes activities, mitigated the status of microbial N and P limitation as indicated by enzymatic stoichiometry, and caused a higher C use efficiency. Soil microbial community structure was shifted towards a lower fungi: bacteria (F:B) ratio in bamboo forest. Bamboo forest soil showed a lower capacity of microbes to use N-rich resources in comparison to C-rich resources. Structural equation modeling suggested a direct and negative effect of C:N imbalance on microbial N limitation and metabolic capacity. Conclusions This study suggests the importance of stoichiometric imbalance between decomposers and their resources in regulating soil microbial community structure and enzyme activities following plant invasion.
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Cited Reference Count: 73
Zhao, Yingzhi Liang, Chenfei Shao, Shuai Chen, Junhui Qin, Hua Xu, Qiufang
National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41977083, 31971631]; Fundamental Research Funds for the Provincial Universities of Zhejiang [2020YQ004]; Natural Science Foundation of Zhejiang ProvinceNatural Science Foundation of Zhejiang Province [LY20C160003]
We thank the anonymous reviewers for their very valuable comments in improving both the language and scientific quality of the manuscript. This work was funded by the National Natural Science Foundation of China (41977083, 31971631), the Fundamental Research Funds for the Provincial Universities of Zhejiang (2020YQ004), the Natural Science Foundation of Zhejiang Province (LY20C160003).
15
Springer
Dordrecht
1573-5036
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Chen, JH; Qin, H (corresponding author), Zhejiang A&F Univ, Zhejiang Prov Collaborat Innovat Ctr High Efficie, Hangzhou 311300, Peoples R China.
junhui@zafu.edu.cn; qinhua@zafu.edu.cn
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