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Your search keyword '"Antony, Chakkiath P."' showing total 13 results
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13 results on '"Antony, Chakkiath P."'

3. The emergence of highly resistant and hypervirulent Klebsiella pneumoniae CC14 clone in a tertiary hospital over 8 years

Author

Hala, Sharif, Malaikah, Mohammed, Huang, Jiayi, Bahitham, Wesam, Fallatah, Omniya, Zakri, Samer, Antony, Chakkiath Paul, Alshehri, Mohammed, Ghazzali, Raeece Naeem, Ben-Rached, Fathia, Alsahafi, Abdullah, Alsaedi, Asim, AlAhmadi, Ghadeer, Kaaki, Mai, Alazmi, Meshari, AlhajHussein, Baraa, Yaseen, Muhammad, Zowawi, Hosam M., Alghoribi, Majed F., Althaqafi, Abdulhakeem O., Al-Amri, Abdulfattah, Moradigaravand, Danesh, and Pain, Arnab

Published
2024
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4. Probiotics reshape the coral microbiome in situ without detectable off-target effects in the surrounding environment

Author

Delgadillo-Ordoñez, Nathalia, Garcias-Bonet, Neus, Raimundo, Inês, García, Francisca C., Villela, Helena, Osman, Eslam O., Santoro, Erika P., Curdia, Joao, Rosado, Joao G. D., Cardoso, Pedro, Alsaggaf, Ahmed, Barno, Adam, Antony, Chakkiath Paul, Bocanegra, Carolina, Berumen, Michael L., Voolstra, Christian R., Benzoni, Francesca, Carvalho, Susana, and Peixoto, Raquel S.

Published
2024
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6. Short-chain alkanes fuel mussel and sponge Cycloclasticus symbionts from deep-sea gas and oil seeps.

Author

Rubin-Blum, Maxim, Antony, Chakkiath Paul, Borowski, Christian, Sayavedra, Lizbeth, Pape, Thomas, Sahling, Heiko, Bohrmann, Gerhard, Kleiner, Manuel, Redmond, Molly C, Valentine, David L, and Dubilier, Nicole

Subjects
Animals, Porifera, Piscirickettsiaceae, Carbon, Alkanes, Gene Expression Profiling, Genomics, Symbiosis, Energy Metabolism, Bivalvia, Gulf of Mexico, Microbiology, Medical Microbiology
Abstract

Cycloclasticus bacteria are ubiquitous in oil-rich regions of the ocean and are known for their ability to degrade polycyclic aromatic hydrocarbons (PAHs). In this study, we describe Cycloclasticus that have established a symbiosis with Bathymodiolus heckerae mussels and poecilosclerid sponges from asphalt-rich, deep-sea oil seeps at Campeche Knolls in the southern Gulf of Mexico. Genomic and transcriptomic analyses revealed that, in contrast to all previously known Cycloclasticus, the symbiotic Cycloclasticus appears to lack the genes needed for PAH degradation. Instead, these symbionts use propane and other short-chain alkanes such as ethane and butane as carbon and energy sources, thus expanding the limited range of substrates known to power chemosynthetic symbioses. Analyses of short-chain alkanes in the environment of the Campeche Knolls symbioses revealed that these are present at high concentrations (in the μM to mM range). Comparative genomic analyses revealed high similarities between the genes used by the symbiotic Cycloclasticus to degrade short-chain alkanes and those of free-living Cycloclasticus that bloomed during the Deepwater Horizon oil spill. Our results indicate that the metabolic versatility of bacteria within the Cycloclasticus clade is higher than previously assumed, and highlight the expanded role of these keystone species in the degradation of marine hydrocarbons.

Published
2017

9. The identification of the new species Nitratireductor thuwali sp. nov. reveals the untapped diversity of hydrocarbon-degrading culturable bacteria from the arid mangrove sediments of the Red Sea

Author

Marasco, Ramona, primary, Michoud, Grégoire, additional, Sefrji, Fatmah O., additional, Fusi, Marco, additional, Antony, Chakkiath P., additional, Seferji, Kholoud A., additional, Barozzi, Alan, additional, Merlino, Giuseppe, additional, and Daffonchio, Daniele, additional

Published
2023
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13. Sulfur-Oxidizing Symbionts without Canonical Genes for Autotrophic CO2Fixation

Author

Seah, Brandon K. B., Antony, Chakkiath Paul, Huettel, Bruno, Zarzycki, Jan, Schada von Borzyskowski, Lennart, Erb, Tobias J., Kouris, Angela, Kleiner, Manuel, Liebeke, Manuel, Dubilier, Nicole, and Gruber-Vodicka, Harald R.

Abstract

Many animals and protists depend on symbiotic sulfur-oxidizing bacteria as their main food source. These bacteria use energy from oxidizing inorganic sulfur compounds to make biomass autotrophically from CO2, serving as primary producers for their hosts. Here we describe a clade of nonautotrophic sulfur-oxidizing symbionts, “CandidatusKentron,” associated with marine ciliates. They lack genes for known autotrophic pathways and have a carbon stable isotope fingerprint heavier than other symbionts from similar habitats. Instead, they have the potential to oxidize sulfur to fuel the uptake of organic compounds for heterotrophic growth, a metabolic mode called chemolithoheterotrophy that is not found in other symbioses. Although several symbionts have heterotrophic features to supplement primary production, in Kentron they appear to supplant it entirely.

Published
2019
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