Metabolic potential and community structure of bacteria in an organic tea plantation

Chen, Wen-Ching; Ko, Chi-Hsuan; Su, Yen-Shuo; Lai, Wei-An; Shen, Fo-Ting

doi:10.1016/j.apsoil.2020.103762

Cited by 34 publications

(21 citation statements)

References 52 publications

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“…The CCC rotation, which also contains the largest levels of organic matter and crop residues [25], increased RAs from C. solibacter (S), which has been linked to increased levels of rice straw residue returned to the system and identified as a key species in the understanding of ecological processes from fertilized agroecosystems [56]. Pedosphaeraceae (F) have little information available but have been found in the soil and are thought to be associated with organic matter decomposition as they showed a positive correlation with Solibacteraceae (F) [57]. Micropepsaceae (F) information is scarce but has been found in acidic soils and is involved with carbon cycling [58].…”

Section: Discussionmentioning

confidence: 99%

Soil Microbial Indicators within Rotations and Tillage Systems

et al. 2021

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Recent advancements in agricultural metagenomics allow for characterizing microbial indicators of soil health brought on by changes in management decisions, which ultimately affect the soil environment. Field-scale studies investigating the microbial taxa from agricultural experiments are sparse, with none investigating the long-term effect of crop rotation and tillage on microbial indicator species. Therefore, our goal was to determine the effect of rotations (continuous corn, CCC; continuous soybean, SSS; and each phase of a corn-soybean rotation, Cs and Sc) and tillage (no-till, NT; and chisel tillage, T) on the soil microbial community composition following 20 years of management. We found that crop rotation and tillage influence the soil environment by altering key soil properties, such as pH and soil organic matter (SOM). Monoculture corn lowered pH compared to SSS (5.9 vs. 6.9, respectively) but increased SOM (5.4% vs. 4.6%, respectively). Bacterial indicator microbes were categorized into two groups: SOM dependent and acidophile vs. N adverse and neutrophile. Fungi preferred the CCC rotation, characterized by low pH. Archaeal indicators were mainly ammonia oxidizers with species occupying niches at contrasting pHs. Numerous indicator microbes are involved with N cycling due to the fertilizer-rich environment, prone to aquatic or gaseous losses.

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Section: Discussionmentioning

confidence: 99%

Soil Microbial Indicators within Rotations and Tillage Systems

et al. 2021

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“…They display genomic and metabolic plasticity, showing a broad range of host and possess a variety of plant growth promoting traits [74,75]. Our previous study also indicated that Burkholderiaceae dominated not only the root surface but root interior, which might form intimate associations with its host tea plants [15]. The family Sphingomonadaceae has been intensively studied, owing to its extraordinary catabolic flexibility to degrade natural and xenobiotic compounds [76].…”

Section: Discussionmentioning

confidence: 98%

“…Wang et al [14] also indicated that the age of tea plantations served as an important factor changing the composition of soil aggregates, which further influenced bacterial metabolic activity and diversity. The tea plantation soil-associated bacterial community showed higher metabolic potential and diversity compared with other rhizo-compartments [15]. Besides, organic amendment was observed to improve microbial diversity, enhance community multi-functionality, and positively correlate with soil quality index [16,17].…”

Section: Introductionmentioning

confidence: 92%

“…The tea plant (Camellia sinensis L.) is a popular beverage and cash crop widely cultivated in Asian areas. In tea plantation soils, the most commonly found bacterial taxa at the phylum level were Acidobacteria, Actinobacteria, Chloroflexi, and Proteobacteria [11][12][13][14][15]. The dynamics of bacterial communities in the chronosequence of tea plantations have been studied, and beneficial bacteria were found to decrease after long-term tea cultivation [11,12].…”

Section: Introductionmentioning

confidence: 99%

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Shifts in Bacterial Community Associated with Green Manure Soybean Intercropping and Edaphic Properties in a Tea Plantation

Shen

Lin

2021

Sustainability

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The continuous cultivation with excessive application of agrochemicals has led to the deterioration of soils. Incorporating leguminous green manure (GM) was found to improve the physicochemical and biological properties of soils. However, the influence of GM soybean intercropping on the temporal distribution of bacterial communities in strongly acidic soils is less explored. In this study, a nine-month field trial of soybean intercropping was conducted in a deteriorated tea plantation. This was used to test the hypothesis that GM treatment ameliorates tea-cultivated environments through changing bacterial communities as well as edaphic properties. GM treatment was demonstrated to increase both functional and population diversity during all the months that were considered. An alteration of life strategies exhibited by bacterial communities in GM treatment was observed, which shifted from oligotrophy (Acidobacteria, Chloroflexi, and the candidate phylum WPS-2) to copiotrophy (Bacteroidetes and Proteobacteria). This also contributed to the remarkable increase in metabolic potential of bacterial communities toward all six carbon source categories. The potentially versatile organic matter decomposers and/or plant growth-promoting bacteria, such as Burkholderiaceae, Chitinophagaceae, Sphingobacteriaceae, and Sphingomonadaceae bacteria, were identified as the most effective biomarkers in GM treatment. These bacterial groups showed strong correlation with soil pH; organic matter; and available K, Ca, and Mg. The increased diversity, metabolic potential, and copiotrophic taxa provided insight into the benefits brought by soybean intercropping, with enhanced community stability, facilitated nutrient cycling, and microbe–plant interactions in the strongly acidic tea plantation.

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“…São predominantes em resíduos como CF e EP, e possuem capacidade de se tornarem abundantes em solos fertilizados com esses tipos de resíduos(JULEN URRA et al, 2019). Já as Acidothermaceae são identificadas por terem alta afinidade com a superfície de raízes, mas seu comportamento e ecofisiologia ainda são bastante desconhecidos(CHEN et al, 2021).Grupos classificados como oligotróficos (estrategistas R) como asAcidobacterias possuem baixa taxa de crescimento e são beneficiadas pela presença de formas mais recalcitrantes de C, porém decrescem com a presença de grandes…”

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Compostagem de resíduos agropecuários: seguridade ambiental, ciclagem de nutrientes e eficácia agronômica

Martins¹

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Compostagem de resíduos agropecuários: seguridade ambiental, ciclagem de nutrientes e eficácia agronômica / Guilherme Lucio Martins. -versão revisada de acordo com a resolução CoPGr 6018 de 2011. --Piracicaba, 2021. 115 p. Dissertação (Mestrado) --USP / Escola Superior de Agricultura "Luiz de Queiroz". 1. Fertilizantes orgânicos 2. Microbioma 3. Agricultura sustentável I. Título AGRADECIMENTOS Eu gostaria de agradecer primeiramente a minha família que sempre me ajudou e permitiu que eu pudesse seguir meus estudos e que sempre me apoiou em minhas escolhas. Minha mãe Gislaine, meu pai Walfrido (in memoriam), minha avó Maut, minhas irmãs Mariana e Carolina, esse mérito é tanto de vocês quanto meu. Obrigado por tudo. Também gostaria de agradecer a minha orientadora, Profa. Dra. Jussara Borges Regitano, pela oportunidade, ensinamentos, paciência e amizade durante toda essa jornada. Aos meus amigos de laboratório Adijailton José de Souza, Douglas Gomes Viana e Mayra Maniero Rodrigues que sempre estiveram dispostos em me ajudar durante o desenvolvimento do trabalho e me animavam mesmo quando eu encontrava dificuldades no caminho. Ao Dr. Fernando Carvalho de Oliveira pela colaboração na construção de ideias durante todo o trabalho. Ao PPG em Microbiologia Agrícola e especialmente à Profa. Dra. Simone Possedente de Lira, por sempre estar disposta em ajudar todos os alunos do programa.

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Metabolic potential and community structure of bacteria in an organic tea plantation

Cited by 34 publications

References 52 publications

Soil Microbial Indicators within Rotations and Tillage Systems

Soil Microbial Indicators within Rotations and Tillage Systems

Shifts in Bacterial Community Associated with Green Manure Soybean Intercropping and Edaphic Properties in a Tea Plantation

Compostagem de resíduos agropecuários: seguridade ambiental, ciclagem de nutrientes e eficácia agronômica

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