A Stronger Rhizosphere Impact on the Fungal Communities Compared to the Bacterial Communities in Pecan Plantations

Liu, Junping; Tang, Yujie; Bao, Jiashu; Wang, Hankun; Peng, Fei; Tan, Pengpeng; Chu, Guolin; Liu, Shuai

doi:10.3389/fmicb.2022.899801

Cited by 8 publications

(4 citation statements)

References 77 publications

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“…Microbial communities are important drivers of soil metabolite distribution (Li et al, 2020). In our previous publication, we found that compared with the bacterial community, the diversity and community structure of the fungal community in BS and RS of pecan differed more significantly (Liu, Tang, Bao, Wang, Peng, Tan, et al, 2022). Although interestingly in this study, soil differential metabolites between BS and RS were more closely related to bacterial community structure than to fungal community structure, especially as reflected in young pecans (Figure 6).…”

Section: Discussionmentioning

confidence: 95%

Integrated microbiome and metabolomics analysis reveal a closer relationship between soil metabolites and bacterial community than fungal community in pecan plantations

et al. 2023

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Understanding soil metabolic diversity and the chemical signals that shape rhizosphere microbial activity is important for protecting plants and improving forest productivity. At present, little information is known about the metabolites in the rhizosphere soil of pecan (Carya illinoinensis) plantation. Based on technologies of untargeted metabolomics and high-throughput sequencing, we investigated differences in the metabolic profiles of rhizosphere and bulk soils and the relationship between metabolites and microorganisms in pecan plantations. The results showed that the abundance of metabolites in rhizosphere soil was significantly higher than that in bulk soil (p < 0.05), especially reflected in plant secondary metabolites and lipids. Orientaloside and marmesin rutinoside were significantly enriched in rhizosphere soil metabolites of pecan at three pecan ages (VIP >1, p < 0.05). The linoleic acid and α-linolenic acid metabolic pathways were significantly enriched in the differential metabolic set (p < 0.01). In addition, tryptophan metabolism, starch and sucrose metabolism, and galactose metabolism were also important factors affecting the rhizosphere metabolic spectrum. Differential metabolites between bulk and rhizosphere soils were more closely associated with bacteria than with fungal communities, particularly in young pecans. With the increasing age of pecans, new significant enrichment of plant secondary metabolites such as cyanidin, 3-trans-caffeoyltormentic acid, N-(1-Deoxy-1-fructosyl) serine and piperdia emerged in the rhizosphere soil.3-trans-caffeoyltormentic acid was positively related to Saitozyma and Protoglossum.Phenylacetaldehyde was positively correlated with Gaiellaceae, Tausonia, and Tuber.This study provides new insights into the mechanisms of interaction between pecans and microorganisms.

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Section: Discussionmentioning

confidence: 95%

Integrated microbiome and metabolomics analysis reveal a closer relationship between soil metabolites and bacterial community than fungal community in pecan plantations

et al. 2023

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“…The specific taxonomic composition of the walnut orchard species at different altitudes was displayed and the interactive display of community taxonomic composition was obtained using Krona software [22][23][24]. QIIME2 (2019.4) software was used to calculate the Chao1 index and the species index of soil microorganisms [13,25] using the undrawn amplicon sequence variant (ASV) table to represent the community species' richness, and the Shannon index and the Simpson index were used [26][27][28] to represent the community species' diversity. To determine which species were significantly affected among the treatments, the linear discriminant analysis effect size (LEfSe) algorithm was implemented [22].…”

Section: Discussionmentioning

confidence: 99%

“…Basidiomycetes belong to the oligotrophic fungi and are rich in ligninolytic and cellulose enzymes. Their mycelium has a widespread distance and their relative abundance increases with the increase in altitude [24][25][26][27]. Therefore, fungi and their mycelium play an important role in assisting nutrient absorption at the highest altitude (3550 m) walnut orchard.…”

Section: Discussionmentioning

confidence: 99%

Composition and Diversity of Soil Microbial Communities in Walnut Orchards at Different Altitudes in Southeastern Tibet

Yan

Zhao

et al. 2023

Land

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To understand the distribution of the soil microbial community in natural walnut orchards at different altitude gradients (3000–3500 m) and to reveal the mechanism of the soil microbial activity in natural walnut orchards adapting to high-altitude environments, soil samples from four groups of natural walnut orchards in Gyaca County, southeast Tibet, were studied. Illumina MiSeq sequencing technology was used to analyze the community composition and diversity of soil bacteria and fungi and their responses to the altitudes. The alpha diversity results showed that the vertical distribution pattern of the fungal community was more obvious than that of the bacterial community and the bacterial community diversity first increased (~3364 m) and then decreased with altitude. The number of amplicon sequence variants (ASVs) in the soil bacterial community was significantly higher than that in the fungal community, but soil bacterial and fungal communities in walnut orchards at different altitudes exhibited both inheritance and uniqueness. At the phylum level, the dominant bacterial phyla at different altitudes were Actinobacteria, Acidobacteria, Proteobacteria, and Chloroflexi (relative abundances > 10.0% in each treatment). With the increase in altitude, the relative abundance of Actinobacteria increased gradually while that of Acidobacteria and Proteobacteria decreased gradually. The dominant fungal phyla were Ascomycota, Basidiomycota, and Mortierellomycota (relative abundances >5.0% in each treatment). With the increase in altitude, the relative abundance of Ascomycota increased significantly. At the genus level, the number of dominant bacteria and fungi in the soil decreased gradually with increased altitude and showed anisotropic distribution characteristics. The relative abundances of Actinobacteria among the bacterial phyla—and Olpidiomycota and Zoopagomycota among the fungal phyla—were positively correlated with the altitude (p < 0.05). Most dominant bacterial and fungal phyla were highly significantly (p < 0.01) or significantly (p < 0.05) negatively correlated with the altitude. Soil nitrogen and phosphorus availabilities are the main limiting factors of microbial community diversity. Therefore, altitude caused changes in soil physicochemical properties which directly or indirectly affected the composition and diversity of soil bacterial and fungal communities, and our study provides a theoretical basis for the altitudinal pattern and succession changes in soil microbial communities in the natural walnut orchards of southeast Tibet.

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“…After cultivation, both lettuce and tomato were harvested. The plant samples were separated into roots, stems, leaves, and fruits, and the soil attached to the roots was collected as rhizosphere soil through the shaking root method. , The biomass of each plant part was weighed and recorded. The collected sample was stored at −20 °C before analyzing the concentrations and enantiomer composition of each β-blocker.…”

Section: Methodsmentioning

confidence: 99%

Uptake and Enantiomeric Selectivity of β-Blockers in Lettuce (Lactuca sativa L.) and Tomato (Lycopersicon esculentum M.) in Soil–Pot Culture

Xu,

Wang,

Zhang

et al. 2023

J. Agric. Food Chem.

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The uptake and translocation of β-blockers in lettuce (Lactuca sativa L.) and tomato (Lycopersicon esculentum M.) were investigated by carrying out a 70-day soil–pot cultivation. The root uptake parameters of β-blockers in lettuce decreased in the order of atenolol (ATE) > sotalol (SOT) > propranolol (PRO) with root bioconcentration factors (BCFsroot/soil) of 0.158, 0.136, and 0.096, respectively, which were positively correlated with their water solubility. The BCFroot/soil of β-blockers in tomato was higher than those in lettuce. ATE and PRO were prone to migrate to the aerial parts of tomato with translocation factors of 3.31 and 4.11, respectively. In tomato fruits, the enantiomeric profile of PRO and ATE shifted to that dominated by the more toxic enantiomer, i.e., (S)-PRO and (R)-ATE. The enantiomeric selectivity of β-blockers in the edible parts of lettuce and tomato indicated the potential ecotoxicity of these pharmaceuticals for plants and the human exposure risk via vegetable intake.

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A Stronger Rhizosphere Impact on the Fungal Communities Compared to the Bacterial Communities in Pecan Plantations

Cited by 8 publications

References 77 publications

Integrated microbiome and metabolomics analysis reveal a closer relationship between soil metabolites and bacterial community than fungal community in pecan plantations

Integrated microbiome and metabolomics analysis reveal a closer relationship between soil metabolites and bacterial community than fungal community in pecan plantations

Composition and Diversity of Soil Microbial Communities in Walnut Orchards at Different Altitudes in Southeastern Tibet

Uptake and Enantiomeric Selectivity of β-Blockers in Lettuce (Lactuca sativa L.) and Tomato (Lycopersicon esculentum M.) in Soil–Pot Culture

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