Relative importance of soil physico-chemical characteristics and plant species identity to the determination of soil microbial community structure

Massenssini, André Marcos; Bonduki, Victor Hugo Araújo; Melo, Christiane Augusta Diniz; Tótola, Marcos Rogério; Ferreira, Francisco Affonso; Costa, Maurício Dutra

doi:10.1016/j.apsoil.2015.02.009

Cited by 33 publications

(19 citation statements)

References 32 publications

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“…Many environmental factors, such as soil organic matter chemistry [57], plant species [58], soil pH [59] and environmental factors [60] can influence soil microbial diversity. For example, different root exudate compositions from different plant species can select distinct microbial populations in the rhizosphere [61, 62].…”

Section: Discussionmentioning

confidence: 99%

“…Chu et al (2010) also reported the composition and diversity of arctic soil bacterial communities were structured depending on local variation in soil pH rather than geographical proximity [59]. Therefore, the shifts in the composition of the bacterial community connected with a change from evergreen trees to deciduous trees could be due to different plant types favoring different nutrients and/or producing different root exudates, which structured the composition and diversity of the bacterial communities by indirectly changing the physic-chemical characteristics of the rhizospheric soils [58]. …”

Section: Discussionmentioning

confidence: 99%

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The rhizospheric microbial community structure and diversity of deciduous and evergreen forests in Taihu Lake area, China

Wei

et al. 2017

PLoS ONE

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Soil bacteria are important drivers of biogeochemical cycles and participate in many nutrient transformations in the soil. Meanwhile, bacterial diversity and community composition are related to soil physic-chemical properties and vegetation factors. However, how the soil and vegetation factors affect the diversity and community composition of bacteria is poorly understood, especially for bacteria associated with evergreen and deciduous trees in subtropical forest ecosystems. In the present paper, the microbial communities of rhizospheric soils associated with different types of trees were analyzed by Illumina MiSeq sequencing the V3-V4 region of the 16S rRNA gene. A total of 121,219 effective 16S rRNA gene sequences were obtained, which were classified into 29 bacterial phyla and 2 archaeal phyla. The dominant phyla across all samples (>5% of good-quality sequences in each sample) were Proteobacteria, Acidobacteria, Firmicutes and Bacteroidetes. The bacterial community composition and diversity were largely affected by both soil pH and tree species. The soil pH was the key factor influencing bacterial diversity, with lower pH associated with less diverse communities. Meanwhile, the contents of NO3− were higher in evergreen tree soils than those associated with deciduous trees, while less NH4+ than those associated with deciduous trees, leading to a lower pH and indirectly influencing the diversity and composition of the bacteria. The co-occurrence patterns were assessed by network analysis. A total of 415 pairs of significant and robust correlations (co-occurrence and negative) were identified from 89 genera. Sixteen hubs of co-occurrence patterns, mainly under the phyla Acidobacteria, Proteobacteria, Firmicutes and Bacteroidetes, may play important roles in sustaining the stability of the rhizospheric microbial communities. In general, our results suggested that local environmental conditions and soil pH were important in shaping the bacterial community of the Taihu Lake zone in east China.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

The rhizospheric microbial community structure and diversity of deciduous and evergreen forests in Taihu Lake area, China

Wei

et al. 2017

PLoS ONE

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“…One difficulty in understanding what controls codistribution of plants and soil microbes is that plants both influence and respond to soil microbial communities. For example, a number of recent studies have shown that plants associate with a nonrandom subset of soil microbes within an ecosystem (Gottel et al., ; Lundberg et al., ; Shakya et al., ; Shi et al., ) and that soil microbes can be differentiated between cooccurring plant species (Bonito et al., ; Burns, Anacker, Strauss, & Burke, ; Ishida, Nara, & Hogetsu, ) or even individuals within the same species (Gehring, Sthultz, Flores‐Renteria, Whipple, & Whitham, ; Massenssini et al., ; Wagner et al., ). Yet a holistic understanding of how this differentiation occurs is still lacking (Hacquard & Schadt, ).…”

Section: Introductionmentioning

confidence: 99%

Soil abiotic variables are more important than Salicaceae phylogeny or habitat specialization in determining soil microbial community structure

et al. 2018

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Predicting the outcome of interspecific interactions is a central goal in ecology. The diverse soil microbes that interact with plants are shaped by different aspects of plant identity, such as phylogenetic history and functional group. Species interactions may also be strongly shaped by abiotic environment, but there is mixed evidence on the relative importance of environment, plant identity and their interactions in shaping soil microbial communities. Using a multifactor, split-plot field experiment, we tested how hydrologic context, and three facets of Salicaceae plant identity-habitat specialization, phylogenetic distance and species identity-influence soil microbial community structure. Analysis of microbial community sequencing data with generalized dissimilarity models showed that abiotic environment explained up to 25% of variation in community composition of soil bacteria, fungi and archaea, while Salicaceae identity influenced <1% of the variation in community composition of soil microbial taxa. Multivariate linear models indicated that the influence of Salicaceae identity was small, but did contribute to differentiation of soil microbes within treatments. Moreover, results from a microbial niche breadth analysis show that soil microbes in wetlands have more specialized host associations than soil microbes in drier environments-showing that abiotic environment changed how plant identity correlated with soil microbial communities. This study demonstrates the predominance of major abiotic factors in shaping soil microbial community structure; the significance of abiotic context to biotic influence on soil microbes; and the utility of field experiments to disentangling the abiotic and biotic factors that are thought to be most essential for soil microbial communities.

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“…For the rhizosphere of RB867515, the diuron, as well as its mixture with hexazinone, were responsible for increasing the qCO 2 values to 90 DAA (Figure 3). Higher values of qCO 2 show that there is a higher imbalance in the soil microorganisms, and this effect may reduce soil organic matter values since a more substantial amount of organic carbon is released into the atmosphere as a gas (MASSENSSINI et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

Activity of Rhizosphere Soil Microorganisms of Sugarcane Cultivars After Spraying of Herbicides: Diuron, Tebuthiuron, Ametryn and Diuron + Hexazinone

et al. 2018

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Changes in the agricultural environment can be determined by providing microbiological indicators of the soil since the soil microorganisms are sensitive to variations in the environment. In this way, the impact of herbicides of long residual effect on the rhizospheric soil microorganisms of sugarcane cultivars was evaluated. The cultivars of sugarcane (SP 81-3250 and RB 867515) were treated with four herbicides (tebuthiuron, diuron, ametryn and mixture of diuron + and hexazinone) applied in pre-emergence. The herbicides were applied seven days after the planting of the gems. At 30, 60 and 90 days after the application, the soil rhizosphere was collected in each treatment to determine the CO2 evolution of the soil (C-CO2), microbial biomass carbon (MBC), metabolic quotient (qCO2), solubility potential of inorganic phosphorus P (PSFI) and percentage of roots colonized by mycorrhizal fungi Arbuscular. No changes were observed in the microbial activity of the sugarcane rhizosphere at 30 days after application of the herbicides (DAA). However, at 90 DAA, all herbicides negatively affected the activity of the rhizospheric microorganisms of sugarcane. The metabolic activity of rhizosphere in soil cultivated with RB 867515 was less affected by herbicides. Keywords: Rhizosphere. Soil microorganisms. Residual effect. ATIVIDADE DA MICROBIOTA RIZOSFÉRICA DE CULTIVARES CANA-DE-AÇÚCAR APÓS APLICAÇÃO DOS HERBICIDAS: DIURON, TEBUTHIURON, AMETRYN E DIURON + HEXAZINONE RESUMO -Alterações no ambiente agrícola podem ser determinadas por meio indicadores microbiológicos do solo, uma vez que a microbiota do solo é sensível às modificações do ambiente. Desta forma, avaliou-se o impacto de herbicidas de longo efeito residual sobre a microbiota rizosférica de cultivares de cana-de-açúcar. As cultivares de cana-de-açúcar SP 81-3250 e RB 867515 foram tratadas com quatro herbicidas (tebuthiuron, diuron, ametryn e a mistura diuron + hexazinone) aplicados em pré-emergência. Os herbicidas foram aplicados sete dias após o plantio das gemas. Aos 30, 60 e 90 dias após a aplicação, o solo rizosferico de cada tratamento foi coletado para determinar a evolução de CO 2 no solo (C-CO 2 ), o carbono da biomassa microbiana (MBC), o quociente metabólico (qCO 2 ), o potencial de solubilização de P inorgânico (PSFI) e a percentagem de raízes colonizadas por fungos micorrízicos arbusculares. Não foram observadas alterações na atividade microbiana da rizosfera da cana-de-açúcar aos 30 dias após a aplicação dos herbicidas (DAA). No entanto, aos 90 DAA todos os herbicidas afetaram negativamente a atividade dos micro-organismos rizosféricos da cana-de-açúcar. A atividade metabólica da rizosfera em solo cultivado com a RB 867515 foi menos afetada pelos herbicidas. Palavras-chave: Rizosfera. Microrganismos do solo. Efeito residual.

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Relative importance of soil physico-chemical characteristics and plant species identity to the determination of soil microbial community structure

Cited by 33 publications

References 32 publications

The rhizospheric microbial community structure and diversity of deciduous and evergreen forests in Taihu Lake area, China

The rhizospheric microbial community structure and diversity of deciduous and evergreen forests in Taihu Lake area, China

Soil abiotic variables are more important than Salicaceae phylogeny or habitat specialization in determining soil microbial community structure

Activity of Rhizosphere Soil Microorganisms of Sugarcane Cultivars After Spraying of Herbicides: Diuron, Tebuthiuron, Ametryn and Diuron + Hexazinone

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