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Microbial ecology is the ecology of microorganisms:their relationship with one another and with their environment. It concerns the three major domains of life—Eukaryota,Archaea,and Bacteria—as well as viruses.
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Electric bacteria are forms of bacteria that directly consume and excrete electrons at different energy potentials without requiring the metabolization of any sugars or other nutrients. This form of life appears to be especially adapted to low-oxygen environments. Most life forms require an oxygen environment in which to release the excess of electrons which are produced in metabolizing sugars. In a low oxygen environment,this pathway for releasing electrons is not available. Instead,electric bacteria "breathe" metals instead of oxygen,which effectively results in both an intake of and excretion of electrical charges.
The holobiont concept is a renewed paradigm in biology that can help to describe and understand complex systems,like the host-microbe interactions that play crucial roles in marine ecosystems. However,there is still little understanding of the mechanisms that govern these relationships,the evolutionary processes that shape them and their ecological consequences. The holobiont concept posits that a host and its associated microbiota with which it interacts,form a holobiont,and have to be studied together as a coherent biological and functional unit to understand its biology,ecology,and evolution.
References
- ↑ "Global Change Program". Monash Biomedicine Discovery Institute.
- 1 2 "Chris Greening". Monash University.
- ↑ "Chris Greening – ResearchGate Profile".
- ↑ "Chris Greening". scholar.google.co.nz.
- 1 2 "Grant - Grants Data Portal". dataportal.arc.gov.au.
- ↑ "Fenner Medal". Monash University.
- ↑ Lu, Donna (2023-10-16). "Quantum physicist Michelle Simmons awarded PM's top science prize for computing work". The Guardian. Retrieved 2023-10-17.
- ↑ "Master and Fellows 2010" (PDF).
- ↑ "ORCID". orcid.org.
- ↑ "Physiological roles of the three [NiFe]-hydrogenases in Mycobacterium smegmatis".
- ↑ "Exceptional PhD Thesis – Chris Greening". micro.otago.ac.nz.
- ↑ "Investigator Grant Applications for Funding Commencing in 2020" (PDF).
- ↑ "Chris Greening, Monash Biomedicine Discovery Institute, Monash University". Monash Lens.
- ↑ "Council". Australian Society for Microbiology.
- ↑ "mSystems". doi: 10.1128/eissn.2379-5077 .
{{cite journal}}: Cite journal requires|journal=(help) - ↑ "Microbial Genomics" – via www.microbiologyresearch.org.
{{cite journal}}: Cite journal requires|journal=(help) - ↑ Greening, Chris; Grinter, Rhys; Chiri, Eleonora (June 25, 2019). "Uncovering the Metabolic Strategies of the Dormant Microbial Majority: towards Integrative Approaches". mSystems. 4 (3): e00107–19. doi:10.1128/mSystems.00107-19. PMC 6529542 . PMID 31120024.
- 1 2 Bay, Sean K.; Dong, Xiyang; Bradley, James A.; Leung, Pok Man; Grinter, Rhys; Jirapanjawat, Thanavit; Arndt, Stefan K.; Cook, Perran L. M.; Larowe, Douglas E.; Nauer, Philipp A.; Chiri, Eleonora; Greening, Chris (2021). "Trace gas oxidizers are widespread and active members of soil microbial communities". Nature Microbiology. 6 (2): 246–256. doi:10.1038/s41564-020-00811-w. PMID 33398096. S2CID 230663681.
- ↑ Greening, Chris; Berney, Michael; Hards, Kiel; Cook, Gregory M.; Conrad, Ralf (March 18, 2014). "A soil actinobacterium scavenges atmospheric H 2 using two membrane-associated, oxygen-dependent [NiFe] hydrogenases". Proceedings of the National Academy of Sciences. 111 (11): 4257–4261. Bibcode:2014PNAS..111.4257G. doi: 10.1073/pnas.1320586111 . PMC 3964045 . PMID 24591586.
- ↑ Ortiz, Maximiliano; Leung, Pok Man; Shelley, Guy; Jirapanjawat, Thanavit; Nauer, Philipp A.; Van Goethem, Marc W.; Bay, Sean K.; Islam, Zahra F.; Jordaan, Karen; Vikram, Surendra; Chown, Steven L.; Hogg, Ian D.; Makhalanyane, Thulani P.; Grinter, Rhys; Cowan, Don A.; Greening, Chris (November 9, 2021). "Multiple energy sources and metabolic strategies sustain microbial diversity in Antarctic desert soils". Proceedings of the National Academy of Sciences. 118 (45): e2025322118. Bibcode:2021PNAS..11825322O. doi: 10.1073/pnas.2025322118 . PMC 8609440 . PMID 34732568.
- ↑ Berney, Michael; Greening, Chris; Conrad, Ralf; Jacobs, William R.; Cook, Gregory M. (August 5, 2014). "An obligately aerobic soil bacterium activates fermentative hydrogen production to survive reductive stress during hypoxia". Proceedings of the National Academy of Sciences. 111 (31): 11479–11484. Bibcode:2014PNAS..11111479B. doi: 10.1073/pnas.1407034111 . PMC 4128101 . PMID 25049411.
- ↑ Grinter, Rhys; Kropp, Ashleigh; Venugopal, Hari; Senger, Moritz; Badley, Jack; Cabotaje, Princess; Stripp, Sven T.; Barlow, Christopher K.; Belousoff, Matthew; Cook, Gregory M.; Vincent, Kylie A.; Schittenhelm, Ralf B.; Khalid, Syma; Berggren, Gustav; Greening, Chris (October 10, 2022). "Energy extraction from air: structural basis of atmospheric hydrogen oxidation": 2022.10.09.511488. doi:10.1101/2022.10.09.511488. S2CID 252899128 – via bioRxiv.
{{cite journal}}: Cite journal requires|journal=(help) - ↑ Greening, Chris; Carere, Carlo R.; Rushton-Green, Rowena; Harold, Liam K.; Hards, Kiel; Taylor, Matthew C.; Morales, Sergio E.; Stott, Matthew B.; Cook, Gregory M. (August 18, 2015). "Persistence of the dominant soil phylum Acidobacteria by trace gas scavenging". Proceedings of the National Academy of Sciences. 112 (33): 10497–10502. Bibcode:2015PNAS..11210497G. doi: 10.1073/pnas.1508385112 . PMC 4547274 . PMID 26240343.
- ↑ Ji, Mukan; Greening, Chris; Vanwonterghem, Inka; Carere, Carlo R.; Bay, Sean K.; Steen, Jason A.; Montgomery, Kate; Lines, Thomas; Beardall, John; van Dorst, Josie; Snape, Ian; Stott, Matthew B.; Hugenholtz, Philip; Ferrari, Belinda C. (December 29, 2017). "Atmospheric trace gases support primary production in Antarctic desert surface soil". Nature. 552 (7685): 400–403. Bibcode:2017Natur.552..400J. doi: 10.1038/nature25014 . hdl: 2440/124244 . PMID 29211716. S2CID 4394421.
- ↑ Cordero, Paul R. F.; Bayly, Katherine; Man Leung, Pok; Huang, Cheng; Islam, Zahra F.; Schittenhelm, Ralf B.; King, Gary M.; Greening, Chris (November 29, 2019). "Atmospheric carbon monoxide oxidation is a widespread mechanism supporting microbial survival". The ISME Journal. 13 (11): 2868–2881. doi:10.1038/s41396-019-0479-8. PMC 6794299 . PMID 31358912.
- ↑ Bay, Sean K.; Dong, Xiyang; Bradley, James A.; Leung, Pok Man; Grinter, Rhys; Jirapanjawat, Thanavit; Arndt, Stefan K.; Cook, Perran L. M.; LaRowe, Douglas E.; Nauer, Philipp A.; Chiri, Eleonora; Greening, Chris (February 28, 2021). "Trace gas oxidizers are widespread and active members of soil microbial communities". Nature Microbiology. 6 (2): 246–256. doi:10.1038/s41564-020-00811-w. PMID 33398096. S2CID 230663681 – via www.nature.com.
- ↑ Lockwood, Scott; Greening, Chris; Baltar, Federico; Morales, Sergio E. (2022). "Global and seasonal variation of marine phosphonate metabolism". The ISME Journal. 16 (9): 2198–2212. doi:10.1038/s41396-022-01266-z. PMC 9381506 . PMID 35739297.
- ↑ Greening, Chris; Geier, Renae; Wang, Cecilia; Woods, Laura C.; Morales, Sergio E.; McDonald, Michael J.; Rushton-Green, Rowena; Morgan, Xochitl C.; Koike, Satoshi; Leahy, Sinead C.; Kelly, William J.; Cann, Isaac; Attwood, Graeme T.; Cook, Gregory M.; Mackie, Roderick I. (October 29, 2019). "Diverse hydrogen production and consumption pathways influence methane production in ruminants". The ISME Journal. 13 (10): 2617–2632. doi: 10.1038/s41396-019-0464-2 . PMC 6776011 . PMID 31243332. S2CID 195657269.
- ↑ Dong, Xiyang; Greening, Chris; Rattray, Jayne E.; Chakraborty, Anirban; Chuvochina, Maria; Mayumi, Daisuke; Dolfing, Jan; Li, Carmen; Brooks, James M.; Bernard, Bernie B.; Groves, Ryan A.; Lewis, Ian A.; Hubert, Casey R. J. (April 18, 2019). "Metabolic potential of uncultured bacteria and archaea associated with petroleum seepage in deep-sea sediments". Nature Communications. 10 (1): 1816. Bibcode:2019NatCo..10.1816D. doi: 10.1038/s41467-019-09747-0 . PMC 6472368 . PMID 31000700. S2CID 121124073.
- ↑ Jeffrey, Luke C.; Maher, Damien T.; Chiri, Eleonora; Leung, Pok Man; Nauer, Philipp A.; Arndt, Stefan K.; Tait, Douglas R.; Greening, Chris; Johnston, Scott G. (April 9, 2021). "Bark-dwelling methanotrophic bacteria decrease methane emissions from trees". Nature Communications. 12 (1): 2127. Bibcode:2021NatCo..12.2127J. doi: 10.1038/s41467-021-22333-7 . PMC 8035153 . PMID 33837213. S2CID 233201655.
- ↑ Chiri, Eleonora; Greening, Chris; Lappan, Rachael; Waite, David W.; Jirapanjawat, Thanavit; Dong, Xiyang; Arndt, Stefan K.; Nauer, Philipp A. (November 29, 2020). "Termite mounds contain soil-derived methanotroph communities kinetically adapted to elevated methane concentrations". The ISME Journal. 14 (11): 2715–2731. doi: 10.1038/s41396-020-0722-3 . PMC 7784690 . PMID 32709975. S2CID 221824185.
- ↑ "Home". SAEF.
- ↑ "Home". www.rise-program.org.
- ↑ "Grant - Grants Data Portal". dataportal.arc.gov.au.
- ↑ Lappan, Rachael; Henry, Rebekah; Chown, Steven L; Luby, Stephen P; Higginson, Ellen E; Bata, Lamiya; Jirapanjawat, Thanavit; Schang, Christelle; Openshaw, John J; O'Toole, Joanne; Lin, Audrie; Tela, Autiko; Turagabeci, Amelia; Wong, Tony H F; French, Matthew A; Brown, Rebekah R; Leder, Karin; Greening, Chris; McCarthy, David (May 1, 2021). "Monitoring of diverse enteric pathogens across environmental and host reservoirs with TaqMan array cards and standard qPCR: a methodological comparison study". The Lancet Planetary Health. 5 (5): e297–e308. doi:10.1016/S2542-5196(21)00051-6. PMC 8116308 . PMID 33964239.
- ↑ Leder, Karin; Openshaw, John J.; Allotey, Pascale; Ansariadi, Ansariadi; Barker, S. Fiona; Burge, Kerrie; Clasen, Thomas F.; Chown, Steven L.; Duffy, Grant A.; Faber, Peter A.; Fleming, Genie; Forbes, Andrew B.; French, Matthew; Greening, Chris; Henry, Rebekah; Higginson, Ellen; Johnston, David W.; Lappan, Rachael; Lin, Audrie; Luby, Stephen P.; McCarthy, David; O'Toole, Joanne E.; Ramirez-Lovering, Diego; Reidpath, Daniel D.; Simpson, Julie A.; Sinharoy, Sheela S.; Sweeney, Rohan; Taruc, Ruzka R.; Tela, Autiko; Turagabeci, Amelia R.; Wardani, Jane; Wong, Tony; Brown, Rebekah (January 1, 2021). "Study design, rationale and methods of the Revitalising Informal Settlements and their Environments (RISE) study: a cluster randomised controlled trial to evaluate environmental and human health impacts of a water-sensitive intervention in informal settlements in Indonesia and Fiji". BMJ Open. 11 (1): e042850. doi:10.1136/bmjopen-2020-042850. PMC 7798802 . PMID 33419917 – via bmjopen.bmj.com.
- ↑ Bashiri, Ghader; Antoney, James; Jirgis, Ehab N. M.; Shah, Mihir V.; Ney, Blair; Copp, Janine; Stuteley, Stephanie M.; Sreebhavan, Sreevalsan; Palmer, Brian; Middleditch, Martin; Tokuriki, Nobuhiko; Greening, Chris; Scott, Colin; Baker, Edward N.; Jackson, Colin J. (April 5, 2019). "A revised biosynthetic pathway for the cofactor F420 in prokaryotes". Nature Communications. 10 (1): 1558. Bibcode:2019NatCo..10.1558B. doi:10.1038/s41467-019-09534-x. PMC 6450877 . PMID 30952857.
- ↑ Lee, Brendon M.; Harold, Liam K.; Almeida, Deepak V.; Afriat-Jurnou, Livnat; Aung, Htin Lin; Forde, Brian M.; Hards, Kiel; Pidot, Sacha J.; Ahmed, F. Hafna; Mohamed, A. Elaaf; Taylor, Matthew C.; West, Nicholas P.; Stinear, Timothy P.; Greening, Chris; Beatson, Scott A.; Nuermberger, Eric L.; Cook, Gregory M.; Jackson, Colin J. (February 7, 2020). "Predicting nitroimidazole antibiotic resistance mutations in Mycobacterium tuberculosis with protein engineering". PLOS Pathogens. 16 (2): e1008287. doi: 10.1371/journal.ppat.1008287 . PMC 7032734 . PMID 32032366.
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