Acidobacteria members harbour an abundant and diverse carbohydrate-active enzymes (cazyme) and secreted proteasome repertoire, key factors for potential efficient biomass degradation

Coluccia, Marion; Besaury, Ludovic

doi:10.1007/s00438-023-02045-x

Cited by 4 publications

(2 citation statements)

References 66 publications

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“…This study underscores the structural diversity of enzymatic systems in cellulolytic soil bacteria, shedding light on the significant contributions of these bacterial taxa to the decomposition of plant polysaccharides and overall soil nutrient cycling [39,40]. Our analysis indicates the presence of genes associated with cellulose decomposition, such as amorphous cellulose and xyloglucan Carbohydrate-Active enzymes (CAZy), further supporting their functional role in nutrient cycling (Figures 4 and 6) [41].…”

Section: Discussionsupporting

confidence: 56%

Unraveling the Role of Bacteria in Nitrogen Cycling: Insights from Leaf Litter Decomposition in the Knyszyn Forest

Khomutovska,

Jasser,

Isidorov

2024

Forests

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Microorganisms are vital in leaf litter decomposition and contribute significantly to global nutrient cycling. However, there is a need for improved understanding of the taxonomic and functional diversity of litter-associated bacteria. The Knyszyn Forest comprises a unique ecosystem providing diverse microhabitats for microorganisms in central Europe, similar to the southwestern taiga in many respects. This study presents the results of high-throughput sequencing performed for Betula pendula, B. pubescens, and Carpinus betulus litter-associated microbial communities from northern Poland. Microbial assemblage composition and structure at different stages of litter decomposition revealed the domination of phyllosphere-associated taxa of Sphingomonas and Pseudomonas in bacterial communities in the early stages. Meanwhile, at the later stages of decomposition, the representation of soil-associated bacterial communities, such as Pedobacter, was higher. This study identifies key bacteria (Pedobacter, Mucilaginibacter, and Luteibacter) as pivotal in nutrient cycling through cellulose and hemicellulose decomposition, dominating later decomposition phases. Taxonomic analysis based on functional markers associated with nitrogen metabolism highlights the pivotal role of specific Pseudomonadota (Proteobacteria) taxa in driving nitrogen cycling dynamics during litter decomposition. Most of these taxa were unclassified at the genus level, particularly in the later stages of litter decomposition, and are crucial in mediating nitrogen transformation processes, underscoring their significance in ecosystem nutrient cycling.

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Section: Discussionsupporting

confidence: 56%

Unraveling the Role of Bacteria in Nitrogen Cycling: Insights from Leaf Litter Decomposition in the Knyszyn Forest

Khomutovska,

Jasser,

Isidorov

2024

Forests

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“… Kalam et al (2020) found that Acidobacteriota is one of the most important microorganisms in the soil flora because it participates in several important material cycling processes in the soil. Because Acidobacteriota is involved in the degradation of plant residue polymers in the soil and participates in the carbon metabolism, iron cycling, and photosynthesis, its increased abundance is conducive to the promotion of the material and nutrient cycling of soil, which is of great importance in ecosystems ( Coluccia & Besaury, 2023 ). Bacteroidota contains a number of genera capable of secreting phosphatases and organic acids, which can promote the conversion of soil insoluble phosphorus and increase phosphorus effectiveness ( Fraser et al, 2015 ).…”

Section: Discussionmentioning

confidence: 99%

Microbial fungicides can positively affect aubergine photosynthetic properties, soil enzyme activity and microbial community structure

Wei,

Zhu,

Zhao

et al. 2024

PeerJ

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Background This study examined the effects of microbial agents on the enzyme activity, microbial community construction and potential functions of inter-root soil of aubergine (Fragaria × ananassa Duch.). This study also sought to clarify the adaptability of inter-root microorganisms to environmental factors to provide a theoretical basis for the stability of the microbiology of inter-root soil of aubergine and for the ecological preservation of farmland soil. Methods Eggplant inter-root soils treated with Bacillus subtilis (QZ_T1), Bacillus subtilis (QZ_T2), Bacillus amyloliquefaciens (QZ_T3), Verticillium thuringiensis (QZ_T4) and Verticillium purpureum (QZ_T5) were used to analyse the effects of different microbial agents on the inter-root soils of aubergine compared to the untreated control group (QZ_CK). The effects of different microbial agents on the characteristics and functions of inter-root soil microbial communities were analysed using 16S rRNA and ITS (internal transcribed spacer region) high-throughput sequencing techniques. Results The bacterial diversity index and fungal diversity index of the aubergine inter-root soil increased significantly with the application of microbial fungicides; gas exchange parameters and soil enzyme activities also increased. The structural and functional composition of the bacterial and fungal communities in the aubergine inter-root soil changed after fungicide treatment compared to the control, with a decrease in the abundance of phytopathogenic fungi and an increase in the abundance of beneficial fungi in the soil. Enhancement of key community functions, reduction of pathogenic fungi, modulation of environmental factors and improved functional stability of microbial communities were important factors contributing to the microbial stability of fungicide-treated aubergine inter-root soils.

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Short-time aerobic digestion treatment of waste activated sludge to enhance EPS production and sludge dewatering performance by changing microbial communities: The impact of temperature

Chen,

Liu,

et al. 2024

Water Cycle

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Acidobacteria members harbour an abundant and diverse carbohydrate-active enzymes (cazyme) and secreted proteasome repertoire, key factors for potential efficient biomass degradation

Cited by 4 publications

References 66 publications

Unraveling the Role of Bacteria in Nitrogen Cycling: Insights from Leaf Litter Decomposition in the Knyszyn Forest

Unraveling the Role of Bacteria in Nitrogen Cycling: Insights from Leaf Litter Decomposition in the Knyszyn Forest

Microbial fungicides can positively affect aubergine photosynthetic properties, soil enzyme activity and microbial community structure

Short-time aerobic digestion treatment of waste activated sludge to enhance EPS production and sludge dewatering performance by changing microbial communities: The impact of temperature

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