Dynamic changes of soil microbial community in Pinus sylvestris var. mongolica plantations in the Mu Us Sandy Land

Bi, Boyuan; Zhang, He; Yuan, Yuan; Wu, Zhuhua; Wang, Yu; Han, Fengpeng

doi:10.1016/j.jenvman.2021.112306

Cited by 42 publications

(23 citation statements)

References 53 publications

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“…As far as fungi are concerned, Ascomycota and Basidiomycota were the main dominant groups, which has been confirmed in many studies [60][61][62]. The relative abundance of Basidiomycota was higher than that of Ascomycota in all samples collected.…”

Section: Variation In Bacterial and Fungal Community Structuresupporting

confidence: 68%

Diversity of Microbial Communities of Pinus sylvestris var. mongolica at Spatial Scale

et al. 2022

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Soil microorganisms play an indispensable role in the forest ecosystem. It is necessary to study the soil microorganisms in Pinus sylvestris var. mongolica, which is one of the afforestation species widely planted in the northern sandy region of China. We collected soil samples of P. sylvestris at large spatial scales and analyzed bacterial and fungal community composition differences using high-throughput sequencing techniques. The results showed that: (1) the richness index of different sandy lands was significantly different. The α-diversity of bacteria was the highest in Mu Us Sandy Land, and the α-diversity of fungi was the highest in Horqin Sandy Land. (2) The dominant phyla of bacteria were Actinobacteria, Proteobacteria, Chloroflexi and Acidobacteria, while the dominant phyla of fungi were Ascomycota and Basidiomycota. The relative abundance of dominant phyla was different. (3) Temperature and precipitation were the main driving factors of bacterial and fungal community change at large spatial scale. In addition, bacteria were also affected by total nitrogen, soil organic carbon and pH content; fungal community was affected by pH. The microorganisms showed obvious differences in geographical distribution, which could provide ideas for promoting sustainable management of P. sylvestris stand.

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Section: Variation In Bacterial and Fungal Community Structuresupporting

confidence: 68%

Diversity of Microbial Communities of Pinus sylvestris var. mongolica at Spatial Scale

et al. 2022

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“…Huang et al [ 47 ] revealed that higher microbial diversity could be conducive to maintaining stable agricultural ecosystems and sustainable crop production. Studies have reported that soil fungal and bacterial diversity significantly increased along a gradient of stand age in Pinus sylvestris [ 48 ] and Robinia pseudoaccacia [ 49 ]. This phenomenon may be attributed to the accumulation of soil nutrients derived from the decomposition of the litter and root exudates as vegetation biomass gradually increases [ 48 ].…”

Section: Discussionmentioning

confidence: 99%

“…Studies have reported that soil fungal and bacterial diversity significantly increased along a gradient of stand age in Pinus sylvestris [ 48 ] and Robinia pseudoaccacia [ 49 ]. This phenomenon may be attributed to the accumulation of soil nutrients derived from the decomposition of the litter and root exudates as vegetation biomass gradually increases [ 48 ]. The accumulated matter could provide more substrates for the decomposition and growth of different bacterial species.…”

Section: Discussionmentioning

confidence: 99%

“…Underground ecological processes, nutrient turnover rates, and metabolic rates in tropical forests are much stronger than those in other ecosystems [ 48 ]. These processes include the decomposition rate of humus, litter, and root exudates mediated by soil microbes.…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, litter gradually accumulated with forest age. Our results showed that the abundance of Firmicutes in the rhizosphere soils increased with stand age, suggesting that Firmicutes may play a crucial role in litter decomposition [ 48 ]. Overall, our research revealed that the composition and functions of soil bacterial communities changed with stand age.…”

Section: Discussionmentioning

confidence: 99%

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Soil Bacterial Community Shifts Are Driven by Soil Nutrient Availability along a Teak Plantation Chronosequence in Tropical Forests in China

Kunnan

Huang

et al. 2021

Biology

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Soil bacterial communities play crucial roles in ecosystem functions and biogeochemical cycles of fundamental elements and are sensitive to environmental changes. However, the response of soil bacterial communities to chronosequence in tropical ecosystems is still poorly understood. This study characterized the structures and co-occurrence patterns of soil bacterial communities in rhizosphere and bulk soils along a chronosequence of teak plantations and adjacent native grassland as control. Stand ages significantly shifted the structure of soil bacterial communities but had no significant impact on bacterial community diversity. Bacterial community diversity in bulk soils was significantly higher than that in rhizosphere soils. The number of nodes and edges in the bacterial co-occurrence network first increased and then decreased with the chronosequence. The number of strongly positive correlations per network was much higher than negative correlations. Available potassium, total potassium, and available phosphorus were significant factors influencing the structure of the bacterial community in bulk soils. In contrast, urease, total potassium, pH, and total phosphorus were significant factors affecting the structure of the bacterial community in the rhizosphere soils. These results indicate that available nutrients in the soil are the main drivers regulating soil bacterial community variation along a teak plantation chronosequence.

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Plants use rhizosphere metabolites to regulate soil microbial diversity

Wang

Zhang

et al. 2021

Land Degrad Dev

Self Cite

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Specific metabolites and secondary metabolites produced by plants and soil microbes play key roles in regulating organismal behaviour. At present, the variations in soil microbial communities mediated by plant rhizosphere metabolism in arid environments are still poorly understood. Therefore, we investigated the rhizosphere soil (RS) and bulk soil (BS) associated with five plant species adapted to the climate in the Mu Us Sandy Land and analysed the chemical composition of soil metabolites, microbial community composition and diversity, edaphic factors, and their relationships. Some metabolites with ecological functions (such as fatty acids, monoacylglycerides and diterpenoids) were detected in the RS and BS of the five plants. Correlation analysis results show that fatty acids and diterpenoids were significantly negatively correlated with drought‐adapted bacterial (Actinobacteria, Chloroflexi) and fungal taxa (class Glomeromycetes and family Nectriaceae), and the bacterial class Rubrobacteria and two fungal phyla Ascomycota and Glomeromycota were significantly negatively correlated with fatty acids and diterpenoids, respectively. Redundancy analysis (RDA) and Monte Carlo permutation results confirm that fatty acids and diterpenoids played critical roles in the variation in the soil microbial communities. Although soil edaphic factors (such as microbial biomass carbon and basal respiration) played important roles in shaping the microbial community, the results of partial least squares path modelling (PLS‐PM) show that plant‐mediated rhizosphere metabolism was the primary factor that affected microbial alpha and beta diversities. We conclude that plants under drought stress regulate microbial community structures by releasing certain fatty acids and secondary metabolites (such as diterpenoids). In addition, the bioactive metabolites released from the rhizosphere affect the soil microbial community more significantly and directly than edaphic factors. Overall, our study provides insight into the underground ecological processes mediated by plant rhizosphere metabolism.

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Dynamic changes of soil microbial community in Pinus sylvestris var. mongolica plantations in the Mu Us Sandy Land

Cited by 42 publications

References 53 publications

Diversity of Microbial Communities of Pinus sylvestris var. mongolica at Spatial Scale

Diversity of Microbial Communities of Pinus sylvestris var. mongolica at Spatial Scale

Soil Bacterial Community Shifts Are Driven by Soil Nutrient Availability along a Teak Plantation Chronosequence in Tropical Forests in China

Plants use rhizosphere metabolites to regulate soil microbial diversity

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