Secondary successional forests undergo tightly-coupled changes in soil microbial community structure and soil organic matter

Shao, Ping; Liang, Chao; Rubert‐Nason, Kennedy F.; Li, Xiangzhen; Xie, Hongfeng; Bao, XH

doi:10.1016/j.soilbio.2018.10.004

Cited by 110 publications

(49 citation statements)

References 62 publications

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“…Previous studies have suggested that soil TOC, TN and W are the major factors impacting upon the structure of microbial community [38, 39]. The assimilation efficiency of C and N is different among different soil microorganisms, and soil microbial community is modulated by availability and transformation of C and N [40, 41]. Soil water content can affect microbial community structure through O 2 availability, substrate diffusion and by altering the water potential within microbial cells [42].…”

Section: Discussionmentioning

confidence: 99%

Microbial community structure and the relationship with soil carbon and nitrogen in an original Korean pine forest of Changbai Mountain, China

Liu

Sui

et al. 2019

BMC Microbiol

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Background The broad-leaved Korean pine mixed forest is an important and typical component of a global temperate forest. Soil microbes are the main driver of biogeochemical cycling in this forest ecosystem and have complex interactions with carbon (C) and nitrogen (N) components in the soil. Results We investigated the vertical soil microbial community structure in a primary Korean pine-broadleaved mixed forest in Changbai Mountain (from 699 to 1177 m) and analyzed the relationship between the microbial community and both C and N components in the soil. The results showed that the total phospholipid fatty acid (PLFA) of soil microbes and Gram-negative bacteria (G-), Gram-positive bacteria (G+), fungi (F), arbuscular mycorrhizal fungi (AMF), and Actinomycetes varied significantly (p < 0.05) at different sites (elevations). The ratio of fungal PLFAs to bacterial PLFAs (F/B) was higher at site H1, and H2. The relationship between microbial community composition and geographic distance did not show a distance-decay pattern. The coefficients of variation for bacteria were maximum among different sites (elevations). Total soil organic carbon (TOC), total nitrogen (TN), soil water content (W), and the ratio of breast-height basal area of coniferous trees to that of broad-leaved tree species (RBA) were the main contributors to the variation observed in each subgroup of microbial PLFAs. The structure equation model showed that TOC had a significant direct effect on bacterial biomass and an indirect effect upon bacterial and fungal biomass via soil readily oxidized organic carbon (ROC). No significant relationship was observed between soil N fraction and the biomass of fungi and bacteria. Conclusion The total PLFAs (tPLFA) and PLFAs of soil microbes, including G-, G+, F, AMF, and Actinomycetes, were significantly affected by elevation. Bacteria were more sensitive to changes in elevation than other microbes. Environmental heterogeneity was the main factor affecting the geographical distribution pattern of microbial community structure. TOC, TN, W and RBA were the main driving factors for the change in soil microbial biomass. C fraction was the main factor affecting the biomass of fungi and bacteria and ROC was one of the main sources of the microbial-derived C pool.

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Section: Discussionmentioning

confidence: 99%

Microbial community structure and the relationship with soil carbon and nitrogen in an original Korean pine forest of Changbai Mountain, China

Liu

Sui

et al. 2019

BMC Microbiol

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“…Root‐associated microbiomes, including bacterial and fungal communities, build connected and complex ecological networks to respond to changes in the external environment. Additionally, different types of environmental factors may produce the differences in the degree to which root‐associated microbiomes respond to various environmental changes (Shao et al , 2019).…”

Section: Introductionmentioning

confidence: 99%

Microbial assemblages associated with the rhizosphere and endosphere of an herbage, Leymus chinensis

Chen

Chao

et al. 2020

Microbial Biotechnology

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Root-associated microbiomes play significant roles in plant productivity, health and ecological services. However, our current understanding of the microbial assemblages in the rhizosphere and endosphere of herbage is still limited. To gain insights into these microbial assemblages, Illumina MiSeq high-throughput sequencing was performed to investigate the characteristics of microbial communities of an herbage, Leymus chinensis. Hierarchical clustering analysis and principal coordinate analysis (PCoA) results showed that microbial communities of the rhizosphere and endosphere samples were clearly distinguished. Rhizosphere soil communities showed a greater sensitivity than root endosphere communities using linear discriminant analysis (LDA) effect size (LEfSe). Rhizosphere and endosphere communities performed their respective functions in the soil as a cohesive collective, and Rhizobiales were observed to function as generalists. Redundancy analysis (RDA) and variance partitioning analysis (VPA) results revealed that the contribution of the interaction between soil physicochemical parameters and soil enzymes was greater than their individual contributions. In summary, this study is the first to elucidate the microbial diversity and community structure of L. chinensis and compare the diversity and composition between rhizospheric and endosphere microbiomes.

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“…The indexes of microbial alpha-diversity were estimated by mothur package (version v.1.30.1), including Shannon and Chao 1 (Barnes et al, 2017; Shao et al, 2019). The student’s test was used to estimate significant differences in diversity indexes between the different groups.…”

Section: Methodsmentioning

confidence: 99%

Comprehensive assessment of paddy soil quality under land consolidation: a novel perspective of microbiology

Lin

et al. 2019

PeerJ

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Soil quality assessment is an important means to demonstrate how effective land consolidation is. However, the existing assessment system is not sufficient to reflect actual soil quality. So, the purpose of this study is to integrate abiological and biological indicators into a comprehensive assessment to evaluate the paddy soil quality under different land consolidation practices. Soil samples were collected from 35 paddy sites under different land consolidation practices including land merging, land leveling (LL), ditch construction (DC) and application of organic fertilizer (AO). A total of 10 paddy sites were selected under conventional tillage (CT) from non-land consolidation area as a control group in Y county, China. The results indicated that soil organic matter (OM), total nitrogen (TN), available phosphorus, bacterial functional diversity (BFD), bacterial and fungal abundances were significantly improved. Fields under LL, among all the land consolidation practices, might still face the risk of land degradation caused by low TN, OM and microbial diversity. High microbial biomass, BFD and OM were significantly higher in fields under AO in nutrient cycle. According to the results of comprehensive assessment, the samples with severe heavy metal contamination and low microbial diversity were generally concentrated in CT. These results indicated that land consolidation was an efficient technique to improve soil quality and could achieve higher quality of agricultural products.

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Secondary successional forests undergo tightly-coupled changes in soil microbial community structure and soil organic matter

Cited by 110 publications

References 62 publications

Microbial community structure and the relationship with soil carbon and nitrogen in an original Korean pine forest of Changbai Mountain, China

Microbial community structure and the relationship with soil carbon and nitrogen in an original Korean pine forest of Changbai Mountain, China

Microbial assemblages associated with the rhizosphere and endosphere of an herbage, Leymus chinensis

Comprehensive assessment of paddy soil quality under land consolidation: a novel perspective of microbiology

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