Effects of plant residue amendments on the bacterial traits of petroleum‐contaminated soil: A co‐occurrence networks analysis DOI
Jiahao Li, Yanan Wang, Wenxing Zhou

et al.

Soil Use and Management, Journal Year: 2024, Volume and Issue: 40(4)

Published: Oct. 1, 2024

Abstract Necrophytoremediation is an emerging and effective approach to remediate petroleum‐contaminated soils. Yet the effects of this technique its enhanced variants, such as amendment with mixed plant residues, on functional modules that control ecological functions soil bacterial community remain unclear. In study, we collected litter from three common species Lespedeza davurica (LD), Artemisia gmelinii (AG) scoparia (AS) contaminated area in northern Shaanxi, China. These samples their 1:1:1 mixture were used for remediation 15 g·kg −1 crude oil‐contaminated over a 150 days period (maintaining constant moisture temperature 25°C). Changes characteristics different after necrophytoremediation detected via high‐throughput sequencing co‐occurrence network analysis. Furthermore, investigated how these alterations may affect final efficiency, aiming gain deeper understanding necrophytoremediation's mechanisms potential optimization methods. The results showed that: (1) Relative abundances main (Mod), especially dominant genera each module, dominated contaminant‐degrading efficiency community. (2) AG AS amendments significantly increased relative abundance Mod 0 was beneficial petroleum degradation, while decreased 3 which detrimental degradation; contrast, LD 4 also unfavourable degradation. However, all types usually petroleum‐degrading by enhancing availability nitrogen, but they tended exert adverse Accordingly, modifications improve functionality modules; or, alternatively, convert them into ones. (3) Significant differences observed among types. maintained or degrading even so when nutrient other degrading‐assisted substances contents much lower than upper limit monospecific predicted values. Hence, enabled synergistically enhance necrophytoremediation.

Language: Английский

Enhanced bioelectrochemical degradation of Thiabendazole using biostimulated Tunisian hypersaline sediments: kinetics, efficiency, and microbial community shifts DOI Creative Commons
Nesrine Saidi, Benjamin Erable,

Luc Etchevery

et al.

Frontiers in Microbiology, Journal Year: 2025, Volume and Issue: 15

Published: Jan. 6, 2025

Thiabendazole (TBZ), a recalcitrant fungicide, is frequently applied in postharvest fruit treatment and generates significant volumes of industrial wastewater (WW) that conventional plants cannot handle. This explores bioelectrochemical system (BES) for TBZ degradation using Tunisian hypersaline sediments (THSs) as inoculum. Four sets BES, along with biological controls, were tested THS subjected to different levels biostimulation. Sediments underwent one, two, or three biostimulation phases increasing concentrations (0, 10, 100, 300 mg kg-1). Potentiostatic control was polarized at 0.1 V vs. saturated calomel reference electrode (SCE), carbon felt working (72 cm2 L-1) maintained 25°C. While current production very low, biostimulated 100 kg-1 kg produced the highest density (3.2 mA m-2), 5-fold increase over untreated (0.6 m-2). GC-FID analysis showed >99% all reactors. The half-elimination time from 27 days treatments 19 BES further 6 following Bacterial revealed substantial microbial community shift after biostimulation, reduction Bacillota (-64%) an Proteobacteria (+62%), dominated by Pseudomonas (45%) Marinobacter (16%). These findings provide insight into selective potential cycles enhance composition improve performance treatment.

Language: Английский

Citations

0
Dynamic Responses in Bioaugmentation of Petroleum-Contaminated Soils using Thermophilic Degrading Consortium HT: Hydrocarbons, Microbial Communities, and Functional Genes DOI
Qingling Wang,

Jinyu Hou,

Peng Li

et al.

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: 487, P. 137222 - 137222

Published: Jan. 14, 2025

Language: Английский

Citations

0
Generalization of Classification of AlkB Family Alkane Monooxygenases from Rhodococcus (sensu lato) Group Based on Phylogenetic Analysis and Genomic Context Comparison DOI Open Access
Kirill Petrikov, Anna Vetrova, Anastasia A. Ivanova

et al.

International Journal of Molecular Sciences, Journal Year: 2025, Volume and Issue: 26(4), P. 1713 - 1713

Published: Feb. 17, 2025

Alkane-oxidizing bacteria play a crucial role in the global carbon cycle. Rhodococcus species are well-known hydrocarbon degraders, distinguished by harboring of multiple homologs AlkB family alkane monooxygenases. Although different types rhodococcal AlkBs have been described, overall picture their diversity remains unclear, leaving gaps current classification. We conducted phylogenetic analysis all identified (sensu lato) and examined genomic context corresponding genes. The sequence clustering was well aligned with neighborhoods, allowing both features to be used as criteria for proposing that form distinct groups characteristic contexts. Our approach allowed us revise classification previously described AlkBs, identifying eight on basis, propose three new ones. Alkane monooxygenases whose genes co-localized rubredoxin can considered generalized AlkBR type, most common among Rhodococcus. In AlkB0 which is paralog AlkBR, violations conservativity known monooxygenase signature motifs were found. findings provide more consistent framework prevents over-reporting "novel" contributes deeper understanding diversity.

Language: Английский

Citations

0
Innovative microbial activators for enhanced bioremediation of oil-contaminated soils: mechanistic insights DOI
Yating Deng,

Wujuan Sun,

Yongbin Li

et al.

World Journal of Microbiology and Biotechnology, Journal Year: 2025, Volume and Issue: 41(2)

Published: Jan. 24, 2025

Language: Английский

Citations

0
Effects of plant residue amendments on the bacterial traits of petroleum‐contaminated soil: A co‐occurrence networks analysis DOI
Jiahao Li, Yanan Wang, Wenxing Zhou

et al.

Soil Use and Management, Journal Year: 2024, Volume and Issue: 40(4)

Published: Oct. 1, 2024

Abstract Necrophytoremediation is an emerging and effective approach to remediate petroleum‐contaminated soils. Yet the effects of this technique its enhanced variants, such as amendment with mixed plant residues, on functional modules that control ecological functions soil bacterial community remain unclear. In study, we collected litter from three common species Lespedeza davurica (LD), Artemisia gmelinii (AG) scoparia (AS) contaminated area in northern Shaanxi, China. These samples their 1:1:1 mixture were used for remediation 15 g·kg −1 crude oil‐contaminated over a 150 days period (maintaining constant moisture temperature 25°C). Changes characteristics different after necrophytoremediation detected via high‐throughput sequencing co‐occurrence network analysis. Furthermore, investigated how these alterations may affect final efficiency, aiming gain deeper understanding necrophytoremediation's mechanisms potential optimization methods. The results showed that: (1) Relative abundances main (Mod), especially dominant genera each module, dominated contaminant‐degrading efficiency community. (2) AG AS amendments significantly increased relative abundance Mod 0 was beneficial petroleum degradation, while decreased 3 which detrimental degradation; contrast, LD 4 also unfavourable degradation. However, all types usually petroleum‐degrading by enhancing availability nitrogen, but they tended exert adverse Accordingly, modifications improve functionality modules; or, alternatively, convert them into ones. (3) Significant differences observed among types. maintained or degrading even so when nutrient other degrading‐assisted substances contents much lower than upper limit monospecific predicted values. Hence, enabled synergistically enhance necrophytoremediation.

Language: Английский

Citations

0