Adaptation of microbial communities to multiple stressors associated with litter decomposition of Pterocarya stenoptera

Pu, Gaozhong; Tong, Jingjing; Su, Aimeng; Ma, Xu; Du, Jingjing; Lv, Yanna; Tian, Xingjun

doi:10.1016/s1001-0742(13)60542-2

Cited by 10 publications

(10 citation statements)

References 52 publications

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“…We have therefore included multiple cases per study in the analysis, but assessed their effect on the results by sensitivity analyses. The study Pu et al (2014) contributed a large number of effect sizes to the laboratory dataset (23%) and thus its effect on the results was assessed by sensitivity analyses.…”

Section: Effect Sizementioning

confidence: 99%

“…When the analyses were done excluding the study by Pu et al (2014), which alone contributed 23% of effect sizes to the laboratory dataset, the grand mean effect size was e0.554 (95% CL ¼ À0.678 and À0.430; Table S5) and there was no longer difference between the effects on litter decomposition in lab and field studies (Q B ¼ 0.806, df ¼ 1, p ¼ 0.369; Table S5). In laboratory studies, litter decomposition was significantly inhibited only by Ag and Zn contamination, although no significant effect of metal identity was found (Q B ¼ 2.500, df ¼ 4, p ¼ 0.645; Table S5).…”

Section: Sensitivity Analysesmentioning

confidence: 99%

“…Among the metals tested, only the combination Cu þ Zn significantly inhibited litter decomposition when all the laboratory studies were considered. This effect was driven by the study by Pu et al (2014), which contributed 12 out of the 17 effect sizes for the Cu þ Zn level. This study addressed the effects of Cu þ Zn mixtures on the decomposition of Pterocarya stenoptera leaf discs, and was the study where nutrient concentrations were the highest (Pu et al, 2014).…”

Section: Heavy Metal Contamination In Laboratory Studiesmentioning

confidence: 99%

See 2 more Smart Citations

Effects of anthropogenic heavy metal contamination on litter decomposition in streams – A meta-analysis

Ferreira

Koricheva

Duarte

et al. 2016

Environmental Pollution

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Section: Effect Sizementioning

confidence: 99%

Section: Sensitivity Analysesmentioning

confidence: 99%

Section: Heavy Metal Contamination In Laboratory Studiesmentioning

confidence: 99%

See 1 more Smart Citation

Effects of anthropogenic heavy metal contamination on litter decomposition in streams – A meta-analysis

Ferreira

Koricheva

Duarte

et al. 2016

Environmental Pollution

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“…Most studies on microbial resistance to toxic metals do not specify whether the tolerance of microorganisms is due to physiological acclimation (during exposure to the metals), or due to adaptation involving a genetically‐based resistance . Adaptation and acclimation of microorganisms to heavy metals have recently been investigated by various researchers indicating the important focus of this research.…”

Section: Introductionmentioning

confidence: 99%

Single and joint effects of Zn and Cu to ATP pool and microbial recovery in continuous growth systems

Şengör

Gikas

Moberly

2018

J of Chemical Tech & Biotech

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BACKGROUND: Four parallel continuous stirred tank reactors were used to investigate the single and joint exposure of Zn and Cu to Arthrobacter sp. JM018, in terms of the impact on the adenosine triphosphate (ATP) pool and microbial tolerance. RESULTS: ATP, optical density (OD), and substrate concentration measurements indicated that Cu was more toxic than Zn under all conditions studied. The results showed that although both OD and ATP measurements individually reflected a decrease in microbial growth rate after the addition of metals for the reactors exposed to Cu, specific ATP (i.e. ATP/OD) showed only a temporary reduction followed by a monotonic return to pre-exposure levels within 100 h. The latter implied tolerance and recovery in the energy status of these cells, after the initial shock due to the exposure to Cu. CONCLUSION: Specific ATP is an important quantity to be considered as a measure of the activity or energy status of microbial biomass surviving after exposure to toxic metals or other unfavorable conditions. The study provides insights for maintaining metal-tolerant microbial communities and to explore both quantitatively and experimentally the dynamics of ATP pool and microbial tolerance in metal-contaminated environments.

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“…Investigation of the dynamics of the microbial community diversity in mixed cultures provides new insights to understand the community-level adaptations, that could help controlling the process stability (Tolvanen et al, 2011;Cabrol and Malhautier 2011;Pu et al, 2014). Despite some well-known methodological biases (e.g., preferential amplification, co-migration of different species, multiple copies of the targeted gene with different sequences) (Muyzer and Smalla;1998), fingerprinting techniques such as polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) and PCR-single-strand conformation polymorphism (SSCP) are useful to rapidly evidence changes in community structure of dominant species associated with operating and/or functional changes in hydrogen-producing reactors (Tolvenen et al, 2011;Rafrafi et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Adaptation of acidogenic sludge to increasing glycerol concentrations for biohydrogen production

Tapia-Venegas

Cabrol

Brandhoff

et al. 2015

Appl Microbiol Biotechnol

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Hydrogen is a promising alternative as an energetic carrier and its production by dark fermentation from wastewater has been recently proposed, with special attention to crude glycerol as potential substrate. In this study, two different feeding strategies were evaluated for replacing the glucose substrate by glycerol substrate: a one-step strategy (glucose was replaced abruptly by glycerol) and a step-by-step strategy (progressive decrease of glucose concentration and increase of glycerol concentration from 0 to 5 g L(-1)), in a continuous stirred tank reactor (12 h of hydraulic retention time (HRT), pH 5.5, 35 °C). While the one-step strategy led to biomass washout and unsuccessful H2 production, the step-by-step strategy was efficient for biomass adaptation, reaching acceptable hydrogen yields (0.4 ± 0.1 molH2 mol(-1) glycerol consumed) around 33 % of the theoretical yield independently of the glycerol concentration. Microbial community structure was investigated by single-strand conformation polymorphism (SSCP) and denaturing gradient gel electrophoresis (DGGE) fingerprinting techniques, targeting either the total community (16S ribosomal RNA (rRNA) gene) or the functional Clostridium population involved in H2 production (hydA gene), as well as by 454 pyrosequencing of the total community. Multivariate analysis of fingerprinting and pyrosequencing results revealed the influence of the feeding strategy on the bacterial community structure and suggested the progressive structural adaptation of the community to increasing glycerol concentrations, through the emergence and selection of specific species, highly correlated to environmental parameters. Particularly, this work highlighted an interesting shift of dominant community members (putatively responsible of hydrogen production in the continuous stirred tank reactor (CSTR)) according to the gradient of glycerol proportion in the feed, from the family Veillonellaceae to the genera Prevotella and Clostridium sp., putatively responsible of hydrogen production in the CSTR.

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Adaptation of microbial communities to multiple stressors associated with litter decomposition of Pterocarya stenoptera

Cited by 10 publications

References 52 publications

Effects of anthropogenic heavy metal contamination on litter decomposition in streams – A meta-analysis

Effects of anthropogenic heavy metal contamination on litter decomposition in streams – A meta-analysis

Single and joint effects of Zn and Cu to ATP pool and microbial recovery in continuous growth systems

Adaptation of acidogenic sludge to increasing glycerol concentrations for biohydrogen production

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