Environmental conditions rather than microbial inoculum composition determine the bacterial composition, microbial biomass and enzymatic activity of reconstructed soil microbial communities

Xun, Weibing; Huang, Ting; Zhao, Jun; Wei, Ran; Wang, Boren; Shen, Qirong; Zhang, Ruifu

doi:10.1016/j.soilbio.2015.07.018

Cited by 126 publications

(83 citation statements)

References 46 publications

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“…Moreover, the structure and functions of soil microbial communities are further constrained by soil physiochemical properties and SOM quality (Fabian, Zlatanovic, Mutz, & Premke, 2017;Sun et al, 2016;Xun et al, 2015;You et al, 2014You et al, , 2016. Growing evidences show that soil geochemistry and physical structure impose direct effects on SOM stability by creating physiochemical barriers preventing microorganisms to access carbon sources Chenu & Plante, 2006;Delgado-Baquerizo et al, 2015;Doetterl et al, 2015;Plante, Conant, Stewart, Paustian, & Six, 2006).…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, the cumulative C mineralization in our study reflected the mineralizable labile SOC under given conditions. There are studies demonstrating that soil physiochemical properties are the primary determinant of potential C mineralization, but the realizable C mineralization is strongly dependent on both the decomposer community and the environmental conditions that shape the decomposer community and affect the soil microbial function (e.g., Canarini et al, 2016;Fabian et al, 2017;Keiser & Bradford, 2017;Xun et al, 2015;You et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

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Effects of temperature, soil substrate, and microbial community on carbon mineralization across three climatically contrasting forest sites

Tang

Sun

Luo

et al. 2017

Ecology and Evolution

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How biotic and abiotic factors influence soil carbon (C) mineralization rate (R S) has recently emerged as one of the focal interests in ecological studies. To determine the relative effects of temperature, soil substrate and microbial community on R s, we conducted a laboratory experiment involving reciprocal microbial inoculations of three zonal forest soils, and measured R S over a 61‐day period at three temperatures (5, 15, and 25°C). Results show that both R s and the cumulative emission of C (R cum), normalized to per unit soil organic C (SOC), were significantly affected by incubation temperature, soil substrate, microbial inoculum treatment, and their interactions (p < .05). Overall, the incubation temperature had the strongest effect on the R S; at given temperatures, soil substrate, microbial inoculum treatment, and their interaction all significantly affected both R s (p < .001) and R cum (p ≤ .01), but the effect of soil substrate was much stronger than others. There was no consistent pattern of thermal adaptation in microbial decomposition of SOC in the reciprocal inoculations. Moreover, when different sources of microbial inocula were introduced to the same soil substrate, the microbial community structure converged with incubation without altering the overall soil enzyme activities; when different types of soil substrate were inoculated with the same sources of microbial inocula, both the microbial community structure and soil enzyme activities diverged. Overall, temperature plays a predominant role in affecting R s and R cum, while soil substrate determines the mineralizable SOC under given conditions. The role of microbial community in driving SOC mineralization is weaker than that of climate and soil substrate, because soil microbial community is both affected, and adapts to, climatic factors and soil matrix.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Effects of temperature, soil substrate, and microbial community on carbon mineralization across three climatically contrasting forest sites

Tang

Sun

Luo

et al. 2017

Ecology and Evolution

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“…High-throughput sequencing provides a useful means to understand the soil microbial community structure and microbial diversity. The microbial community structure is influenced by the physical and chemical properties of the soil (Xun et al, 2015;Cai et al, 2017) as well as by the species and even the genotype of the host plant (Ofek et al, 2014). Heilongjiang Province is the main soybean production area in northern China.…”

Section: Introductionmentioning

confidence: 99%

Changes in the Microbial Community Structure and Soil Chemical Properties of Vertisols Under Different Cropping Systems in Northern China

Song

Tao

Guo

et al. 2018

Front. Environ. Sci.

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The predominant cropping system and management practices play an important role in soil physico-chemical properties and microbiome composition and diversity. This study analyzed the changes in soil fertility and the microbial community in four soybean-based cropping systems over 12 years. Amplification subsequencing techniques were used to compare soil community structures among the systems and identify significant positive and negative fertility factors. Soybean cropping favored the accumulation of OM and the available N, K DTPA Fe, Mn, Zn and Cu contents in soil but not fixed available P. The WS and CS cropping systems were conducive to the fixed available P, but they consumed OM, DTPA K, and Zn. The SC exhibited the lowest soil bacterial and archaeal abundance and diversity but high fungal abundance and diversity. The dominant Proteobacteria in the SC were significantly positively correlated with soil DTPA Fe and Mn. The dominant Actinobacteria were positively correlated with available P, DTPA Cu and Mn. The FS cropping system contained 764 unique bacterial species, 724 unique fungal species and the highest relative abundance of Protista. The FS had high microbial diversity, with high relative abundances of Bacteroidetes and Zygomycota and a significantly lower relative abundance of Actinobacteria. The Bacteroidetes were significantly correlated with available N, OM and DTPA Fe and negatively correlated with available P and DTPA Cu. Zygomycota was negatively correlated with available P and DTPA Cu. In the CS and WS, the soil bacterial abundance and diversity were moderate. The dominant Acidobacteria was significantly negatively correlated with soil DTPA, Fe and Mn. The CS exhibited the lowest fungal abundance and diversity. Furthermore, the relative abundance of Ascomycota was significantly improved in the WS and significantly positively correlated with available P and DTPA Cu. Decreases in the available P, K, DTPA Cu, and Mn of Vertisols greatly affect microbial community structure, and these nutrients regulate bacterial and fungal abundance and diversity. Compared to the SC, the FS, WS, and CS had more balanced soil fertility and microbial stability, but diverse cropping systems are most conducive to soil productivity. These findings are of great relevance for protecting the ecological environment.

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“…Agroecosystems in red soil areas are so important and irreplaceable for world crop production that this relationship must be systematically investigated. However, few studies have focused on the bacterial community and functional gene composition in red soil under commonly used fertilizer management approaches, especially using long-term experiments (Sun et al, 2015;Xun et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Significant alteration of soil bacterial communities and organic carbon decomposition by different long‐term fertilization management conditions of extremely low‐productivity arable soil inSouthChina

Xun

Zhao

Xue

et al. 2015

Environmental Microbiology

Self Cite

158

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Different fertilization managements of red soil, a kind of Ferralic Cambisol, strongly affected the soil properties and associated microbial communities. The association of the soil microbial community and functionality with long-term fertilization management in the unique low-productivity red soil ecosystem is important for both soil microbial ecology and agricultural production. Here, 454 pyrosequencing analysis of 16S recombinant ribonucleic acid genes and GeoChip4-NimbleGen-based functional gene analysis were used to study the soil bacterial community composition and functional genes involved in soil organic carbon degradation. Long-term nitrogen-containing chemical fertilization-induced soil acidification and fertility decline and significantly altered the soil bacterial community, whereas long-term organic fertilization and fallow management improved the soil quality and maintained the bacterial diversity. Short-term quicklime remediation of the acidified soils did not change the bacterial communities. Organic fertilization and fallow management supported eutrophic ecosystems, in which copiotrophic taxa increased in relative abundance and have a higher intensity of labile-C-degrading genes. However, long-term nitrogen-containing chemical fertilization treatments supported oligotrophic ecosystems, in which oligotrophic taxa increased in relative abundance and have a higher intensity of recalcitrant-C-degrading genes but a lower intensity of labile-C-degrading genes. Quicklime application increased the relative abundance of copiotrophic taxa and crop production, although these effects were utterly inadequate. This study provides insights into the interaction of soil bacterial communities, soil functionality and long-term fertilization management in the red soil ecosystem; these insights are important for improving the fertility of unique low-productivity red soil.

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Environmental conditions rather than microbial inoculum composition determine the bacterial composition, microbial biomass and enzymatic activity of reconstructed soil microbial communities

Cited by 126 publications

References 46 publications

Effects of temperature, soil substrate, and microbial community on carbon mineralization across three climatically contrasting forest sites

Effects of temperature, soil substrate, and microbial community on carbon mineralization across three climatically contrasting forest sites

Changes in the Microbial Community Structure and Soil Chemical Properties of Vertisols Under Different Cropping Systems in Northern China

Significant alteration of soil bacterial communities and organic carbon decomposition by different long‐term fertilization management conditions of extremely low‐productivity arable soil inSouthChina

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