Tree species identity surpasses richness in affecting soil microbial richness and community composition in subtropical forests

Chen, Liang; Xiang, Wenhua; Xiang, Wenhua; Ouyang, Shuai; Zhou, Bo; Zeng, Yelin; Chen, Yongliang; Kuzyakov, Yakov

doi:10.1016/j.soilbio.2018.12.008

Cited by 121 publications

(75 citation statements)

References 61 publications

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“…Among biotic factors, we found that PR and community structure, especially the latter factor, significantly influenced the β-diversity of the bacterial community, as PR and community structure purely explained 1.6 and 5.4% of variation in bacterial community structure, respectively (Figure 5). Similar results were also found in temperate deciduous forests (Dukunde et al, 2019) as well as subtropical forests (Chen et al, 2019), which indicated plant-specific characteristics may have a more important effect than the number of species on bacterial community variations. Generally, specific plants offer unique carbon resources via plant leaf litter, fine root, or root exudates, and this supply makes the bacterial community distinctly plant dependent (Hooper et al, 2000; Millard and Singh, 2010; Eisenhauer et al, 2011).…”

Section: Discussionsupporting

confidence: 73%

Soil Property and Plant Diversity Determine Bacterial Turnover and Network Interactions in a Typical Arid Inland River Basin, Northwest China

Wang

et al. 2019

Front. Microbiol.

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Water sources from the lower reaches of the Heihe River northwest China, located in an arid area impacted by environmental stresses, have promoted changes to the local soil and plant conditions; however, our understanding of variations and drivers of soil bacterial communities in an arid inland river basin remains unclear. Therefore, we collected 39 soil samples from a riparian oasis zone (ROZ) to the circumjacent desert zone (CDZ) at the lower reaches of Heihe River to evaluate bacterial communities based on the 16S rRNA gene data. We found that the bacterial community composition differed between ROZ and CDZ habitats, with significantly higher relative abundance of the phyla Gemmatimonadetes and Acidobacteria in ROZ, whereas the abundance of the phyla Actinobacteria and Deinococcus–Thermus was greater in CDZ. The difference in the bacterial community was almost entirely generated by the species turnover rather than the nestedness among all samples. In addition, we found that bacterial α-diversity index showed no significant difference between ROZ and CDZ habitats. The distance-decay analysis showed that spatial distance, plant community, soil property, and plant functional trait were correlated with bacterial community variations. However, the variation partition analysis (VPA) revealed that both soil properties and plant community strongly explained the difference [such as soil water content (WC), soil silt content, and plant community structure] compared with plant functional traits in bacterial β-diversity and species turnover. Based on a co-occurrence network analysis, we found that the bacterial network of ROZ, which had more negative correlations, higher average connectivity, shorter average path length, and smaller modularity, was more complex than the network of CDZ. This suggested that the bacterial community was more stable and less vulnerable to change in the ROZ habitat than in the CDZ habitat. Overall, our findings suggest that the heterogeneity of soil properties and plant community collectively affect the structure of the soil bacterial community in an arid inland river basin. However, the influence of plant functional traits on the variation of the bacterial community depends on soil properties and plant community.

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Section: Discussionsupporting

confidence: 73%

Soil Property and Plant Diversity Determine Bacterial Turnover and Network Interactions in a Typical Arid Inland River Basin, Northwest China

Wang

et al. 2019

Front. Microbiol.

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“…In contrast, a positive correlation between C/N ratio and relative abundance of symbiotrophs was found only in C. cordata. High abundance of ECM in symbiotrophs of C. cordata might be associated with this result, as high C/N ratio was positively correlated with relative abundance of ECM taxa in previous studies (Chen et al, 2019), and ECM facilitate nitrogen uptake by releasing oxidative enzymes (Bödeker et al, 2014), but further investigation would develop our understanding of these processes.…”

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confidence: 77%

Influence of Season and Soil Properties on Fungal Communities of Neighboring Climax Forests (Carpinus cordata and Fraxinus rhynchophylla)

Park

Yoo

et al. 2020

Front. Microbiol.

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Trees in forest ecosystems constantly interact with the soil fungal community, and this interaction plays a key role in nutrient cycling. The diversity of soil fungal communities is affected by both environmental factors and host tree species. We investigated the influence of both of these factors by examining the total fungal communities in the rhizospheric soil of climax tree species that have similar ecological roles (Carpinus cordata, an ectomycorrhizal [ECM] tree, and Fraxinus rhynchophylla, an arbuscular mycorrhizal [AM] tree) in temperate forests with continental climates of Mt. Jeombong, South Korea. Fungal communities were assessed by Illumina-MiSeq sequencing the internal transcribed spacer (ITS) region of environmental DNA, and comparing their environmental factors (season and soil properties). We found that soil fungi of the two forest types differed in terms of community structure and ecological guild composition. The total fungal community composition changed significantly with seasons and soil properties in the F. rhynchophylla forest, but not in the C. cordata forest. However, potassium and carbon were significantly correlated with fungal diversity in both forests, and a positive correlation was found only between symbiotrophs of C. cordata and the carbon to nitrogen (C/N) ratio. Thus, the effects of environmental factors on soil fungal communities depended on the host trees, but some factors were common in both forests. Our results indicate that individual tree species should be considered when anticipating how the fungal communities will respond to environmental change.

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“…Bacterial 16S rRNA genes were amplified using the primer pair 515F and 907R and fungal ITS genes using ITS1F and ITS2 (2043R). Detailed analyses of a gene database were provided by Chen et al (). The Shannon diversity index, which provides an informative estimate of taxonomic diversity for soil microbial communities (Delgado‐Baquerizo et al, ), was selected for this study.…”

Section: Methodsmentioning

confidence: 99%

Linkage between tree species richness and soil microbial diversity improves phosphorus bioavailability

Xiang

Ouyang

et al. 2019

Functional Ecology

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Increased availability of soil phosphorus (P) has recently been recognised as an underlying driving factor for the positive relationship between plant diversity and ecosystem function. The effects of plant diversity on the bioavailable forms of P involved in biologically mediated rhizospheric processes and how the link between plant and soil microbial diversity facilitates soil P bioavailability, however, remain poorly understood. This study quantified four forms of bioavailable P (CaCl2‐P, citric‐P, enzyme‐P and HCl‐P) in mature subtropical forests using a novel biologically based approach, which emulates how rhizospheric processes influence the release and supply of available P. Soil microbial diversity was measured by Illumina high‐throughput sequencing. Our results suggest that tree species richness significantly affects soil microbial diversity (p < 0.05), increases litter decomposition, fine‐root biomass and length and soil organic carbon and thus increases the four forms of bioavailable P. A structural equation model that links plants, soil microbes and P forms indicated that soil bacterial and fungal diversity play dominant roles in mediating the effects of tree species richness on soil P bioavailability. An increase in the biodiversity of plants, soil bacteria and fungi could maintain soil P bioavailability and alleviate soil P limitations. Our results imply that biodiversity strengthens plant and soil feedback and increases P recycling. A plain language summary is available for this article.

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Tree species identity surpasses richness in affecting soil microbial richness and community composition in subtropical forests

Cited by 121 publications

References 61 publications

Soil Property and Plant Diversity Determine Bacterial Turnover and Network Interactions in a Typical Arid Inland River Basin, Northwest China

Soil Property and Plant Diversity Determine Bacterial Turnover and Network Interactions in a Typical Arid Inland River Basin, Northwest China

Influence of Season and Soil Properties on Fungal Communities of Neighboring Climax Forests (Carpinus cordata and Fraxinus rhynchophylla)

Linkage between tree species richness and soil microbial diversity improves phosphorus bioavailability

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