Soil organic carbon and total nitrogen predict large-scale distribution of soil fungal communities in temperate and alpine shrub ecosystems

Chen, Yongliang; Xu, Tianle; Fu, Wei; Hu, Hang‐Wei; You, Luncheng; Chen, Baodong

doi:10.1016/j.ejsobi.2020.103270

Cited by 17 publications

(7 citation statements)

References 40 publications

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“…along with anthropogenic effects, significant spatial heterogeneity in soil nutrients and microbial species richness have arisen among different regions, which in turn has led to spatial differences in soil microbial community richness (Jiao et al, 2019;Plassart et al, 2019). Our findings suggested that the overall rhizosphere bacterial richness in the three minor grain crops first increased and then decreased with the increase in latitude or longitude (Figure 3 and Figure S5), which is in accordance with the biogeographic patterns observed among forest soil fungi (Chen et al, 2021) and animals (Witman et al, 2004). However, an opposite trend was found in wheat, for which bacterial richness and latitude appeared to be positively correlated at a larger spatial scale.…”

Section: Rhizosphere Bacterial Community Composition and Diversity Among The Three Minor Grain Cropssupporting

confidence: 83%

Rhizosphere bacterial community structure of three minor grain crops: A case‐study from paired field sites in northern China

et al. 2021

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Rhizosphere bacteria are critical to plant health and ecological functioning. However, our understanding of rhizosphere bacterial community turnover and co-occurrences with minor grain crops remains limited, especially at regional scales. Herein, we compared the turnover and networks of foxtail millet, proso millet, and sorghum rhizosphere bacterial communities across nine paired fields in northern China. Remarkable differences in community composition, diversity between three minor grain crops, and the influence of region on these indicators was greater than that of crop type.Community richness of foxtial millet, proso millet, and sorgum showed a unimodal curve with latitude increased. Compared to spatial factors, environmental variables had greater effects on the rhizosphere bacterial community turnover in three minor grain crops. Edaphic variables were more important than climatic variables for rhizosphere bacterial community composition in foxtail millet fields. In addition, soil organic matter (OM) and total nitrogen (TN) were the key factors influencing the turnover of rhizosphere communities in foxtail millet and sorghum. In contrast, pH and TN were important factors influencing the turnover of rhizosphere communities in proso millet. Rhizosphere bacterial networks were more closely interconnected in proso millet fields than in the other two crops, showing the lower average path length and diameter, greater average clustering, and graph density. In addition, Proteobacteria, Actinobacteria, and Acidobacteria played major roles in the rhizosphere bacterial network structures and were predicted to maintain generalist metabolic diversity. These findings provide new insights for expanding our knowledge of the biogeography and coexistence theory of minor grain crop ecosystems at a large scale.

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Section: Rhizosphere Bacterial Community Composition and Diversity Among The Three Minor Grain Cropssupporting

confidence: 83%

Rhizosphere bacterial community structure of three minor grain crops: A case‐study from paired field sites in northern China

et al. 2021

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“…The performance of DEM-derived data as a subset of digital soil morphometrics was described by Hartemink and Minasny [62]. It was also reported that latitude and longitude, in addition to soil OC and total nitrogen, can be a useful predictor to estimate the distribution of the fungal community [30]. The importance of terrain-related attributes may be explained by the idea that soil OC can be estimated with topographic properties [63].…”

Section: The Role Of Dem-derived Datamentioning

confidence: 97%

“…There is a relationship between glomalin and soil OC [29]; therefore, terrain-related attributes can provide useful data to model and monitor the spatial distribution of glomalin-related indices. It was also reported that an earth system model might improve the prediction of fungal communities in terrestrial shrub ecosystems when using glomalin as a signature molecule for AMF [30].…”

Section: Introductionmentioning

confidence: 99%

Recalcitrant C Source Mapping Utilizing Solely Terrain-Related Attributes and Data Mining Techniques

et al. 2022

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Agricultural practices affect arbuscular mycorrhizal fungal (AMF) hyphae growth and glomalin production, which is a recalcitrant carbon (C) source in soil. Since the spatial distribution of glomalin is an interesting issue for agronomists in terms of carbon sequestration, digital maps are a cost-free and useful approach. For this study, a set of 120 soil samples was collected from an experimental area of 310 km2 from the Sarab region of Iran. Soil total glomalin (TG) and easily extractable glomalin (EEG) were determined via ELISA using the monoclonal antibody 32B11. Soil organic carbon (OC) was also measured. The ratios of TG/OC and EEG/OC as the glomalin–C quotes of OC were calculated. A total of 17 terrain-related attributes were also derived from the digital elevation model (DEM) and used as static environmental covariates in digital soil mapping (DSM) using three predictive models, including multiple linear regression (MLR), random forests (RF), and Cubist (CU). The major findings were as follows: (a) DSM facilitated the interpretation of recalcitrant C source variation; (b) RF outperformed MLR and CU as models in predicting and mapping the spatial distribution of glomalin using available covariates; (c) the best accuracy in predictions was for EEG, followed by EEG/OC, TG, and TG/OC.

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“…Although, in the same experimental setup, increasing invasive species richness was found to significantly changed species composition of the plant communities by increasing the productivity of alien invasive plant species and decreasing that of native plant species [26], it had no impact on alpha diversity of either soil fungal or bacterial communities. Previous studies testing the role of native plant richness showed that alpha diversity of soil fungal communities can have a positive [11,45,46], negative [47,48] or no relationship [49][50][51][52][53] with native plant species richness. The positive relationship could be because more diverse microhabitats and/or resources created by higher richness of plant species [11,53,54].…”

Section: Effects Of Invasive Species Diversity On Alpha Diversity Of ...mentioning

confidence: 98%

Effects of invasive plant diversity on soil microbial communities

Wang

Wang²,

Wang³

et al. 2022

Preprint

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Native plant communities can be invaded by different numbers of alien plant species or by the same number of alien plant species with different levels of evenness. However, little is known about how alien invasive plant species richness and evenness affect soil microbial communities. We constructed native herbaceous plant communities invaded by exotic plants with different richness (1, 2, 4 and 8-species) and evenness (high and low) and analyzed soil physico-chemical properties and the diversity and composition of soil fungal and bacterial communities. Overall, species richness and evenness of invasive plants had no significant effect on bacterial and fungal alpha diversity (OTUs, Shannon, Simpson, Chao1 and ACE) and soil physico-chemical properties. However, invasive species richness had a significant impact on the relative abundance of the most dominant fungi Ascomycota and Bipolaris , and the dominant bacteria Actinobacteriota, which increased with increasing invasive species richness. The relative abundance of the dominant microbial groups was significantly correlated with the relative abundance of some specific invasive plant species in the community. This study sheds new light on the effects of plant co-invasion on soil microbial communities, which may help understand the underlying mechanisms of multiple alien plant invasion processes from the perspective of soil microorganisms.

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Soil organic carbon and total nitrogen predict large-scale distribution of soil fungal communities in temperate and alpine shrub ecosystems

Cited by 17 publications

References 40 publications

Rhizosphere bacterial community structure of three minor grain crops: A case‐study from paired field sites in northern China

Rhizosphere bacterial community structure of three minor grain crops: A case‐study from paired field sites in northern China

Recalcitrant C Source Mapping Utilizing Solely Terrain-Related Attributes and Data Mining Techniques

Effects of invasive plant diversity on soil microbial communities

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