The Chemical Ecology of Pollutant Biodegradation: Bioremediation and Phytoremediation from Mechanistic and Ecological Perspectives

Singer, Andrew C.

doi:10.1007/978-1-4020-4999-4_2

Cited by 25 publications

(16 citation statements)

References 66 publications

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“…In terms of parameters like plant survival, support of degrading microorganisms, PCB removal, some of the selected dicotyledonous plants seem to be suitable test organisms to assess effectivity of phyto/rhizoremediation processes in soil or contaminated sediments. Recent studies using molecular methods have discussed, that plants are responsible for the composition of microbial consortia present in their root zone, including those with ability to degrade the chlorinated aromatic compounds (Ryslava et al 2003;Chekol et al 2004;Singer 2006;Leigh et al 2006;Ionescu et al 2009;Rezek et al 2009;McGuiness and Dowling 2009). The experiments documented that not all seemingly beneficial conditions and combinations brought desirable effect.…”

Section: Discussionmentioning

confidence: 98%

Phyto/rhizoremediation studies using long-term PCB-contaminated soil

Macková

Prouzová

Stursa

et al. 2009

Environ Sci Pollut Res

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Section: Discussionmentioning

confidence: 98%

Phyto/rhizoremediation studies using long-term PCB-contaminated soil

Macková

Prouzová

Stursa

et al. 2009

Environ Sci Pollut Res

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“…The three most abundant genera found in D. valens gut microbiota in our study are known to play a role in toxin metabolism (Table 2). The most predominant genus, Sphingomonas (Table 2), is reported to catabolize monoterpenes and other aromatic compounds [51,52,53]. The bacteria in genera Rhodococcus and Burkholderia , which also have high abundance in D. valens gut bacteria communities (Table 2), are reported to degrade monoterpenes, e.g., α-pinene, limonene [54,55,56].…”

Section: Discussionmentioning

confidence: 99%

Pine Defensive Monoterpene α-Pinene Influences the Feeding Behavior of Dendroctonus valens and Its Gut Bacterial Community Structure

Shi

Wang

et al. 2016

IJMS

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The exposure to plant defense chemicals has negative effects on insect feeding activity and modifies insect gut microbial community composition. Dendroctonus valens is a very destructive forest pest in China, and harbors a large diversity and abundance of gut microorganisms. Host pine defensive chemicals can protect the pines from attack by the holobiont. In this study, boring length of D. valens feeding on 0 mg/g α-pinene and 9 mg/g α-pinene concentration in phloem media for 6 and 48 h were recorded, and their gut bacterial communities were analyzed in parallel. Nine milligram per gram α-pinene concentration significantly inhibited boring length of D. valens and altered its gut microbial community structure after 6 h. The inhibition of boring length from 9 mg/g α-pinene in diets ceased after 48 h. No significant differences of the bacterial communities were observed between the beetles in 0 and 9 mg/g α-pinene concentration in phloem media after 48 h. Our results showed that the inhibition of the feeding behavior of D. valens and the disturbance to its gut bacterial communities in 9 mg/g α-pinene concentration in phloem media after 6 h were eliminated after 48 h. The resilience of gut bacterial community of D. valens may help the beetle catabolize pine defense chemical.

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“…Better insight into this mechanism will help in understanding how plants promote PCB degradation in soil. Many investigations have identified plant secondary metabolites (flavonoids or terpenes) as likely candidates to trigger microbial degradation of PCBs in soil (34). Shaw et al (31) have hypothesized that PSMs act to shape rhizosphere microbial community structure and, thus, they may have an impact on the rhizosphere function by triggering microbial pathways that can influence the quality and quantity of PSMs in soil.…”

Section: Discussionmentioning

confidence: 99%

Remarkable Ability of Pandoraea pnomenusa B356 Biphenyl Dioxygenase To Metabolize Simple Flavonoids

Pham

Sylvestre

2012

Appl Environ Microbiol

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ABSTRACTMany investigations have provided evidence that plant secondary metabolites, especially flavonoids, may serve as signal molecules to trigger the abilities of bacteria to degrade chlorobiphenyls in soil. However, the bases for this interaction are largely unknown. In this work, we found that BphAEB356, the biphenyl/chlorobiphenyl dioxygenase fromPandoraea pnomenusaB356, is significantly better fitted to metabolize flavone, isoflavone, and flavanone than BphAELB400fromBurkholderia xenovoransLB400. Unlike those of BphAELB400, the kinetic parameters of BphAEB356toward these flavonoids were in the same range as for biphenyl. In addition, remarkably, the biphenyl catabolic pathway of strain B356 was strongly induced by isoflavone, whereas none of the three flavonoids induced the catabolic pathway of strain LB400. Docking experiments that replaced biphenyl in the biphenyl-bound form of the enzymes with flavone, isoflavone, or flavanone showed that the superior ability of BphAEB356over BphAELB400is principally attributable to the replacement of Phe336 of BphAELB400by Ile334 and of Thr335 of BphAELB400by Gly333 of BphAEB356. However, biochemical and structural comparison of BphAEB356with BphAEp4, a mutant of BphAELB400which was obtained in a previous work by the double substitution Phe336Met Thr335Ala of BphAELB400, provided evidence that other residues or structural features of BphAEB356whose precise identification the docking experiment did not allow are also responsible for the superior catalytic abilities of BphAEB356. Together, these data provide supporting evidence that the biphenyl catabolic pathways have evolved divergently among proteobacteria, where some of them may serve ecological functions related to the metabolism of plant secondary metabolites in soil.

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The Chemical Ecology of Pollutant Biodegradation: Bioremediation and Phytoremediation from Mechanistic and Ecological Perspectives

Cited by 25 publications

References 66 publications

Phyto/rhizoremediation studies using long-term PCB-contaminated soil

Phyto/rhizoremediation studies using long-term PCB-contaminated soil

Pine Defensive Monoterpene α-Pinene Influences the Feeding Behavior of Dendroctonus valens and Its Gut Bacterial Community Structure

Remarkable Ability of Pandoraea pnomenusa B356 Biphenyl Dioxygenase To Metabolize Simple Flavonoids

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