Alternative pathways for phosphonate metabolism in thermophilic cyanobacteria from microbial mats.

The ISME Journal
María R Gómez-GarcíaDevaki Bhaya

Abstract

Synechococcus sp. represents an ecologically diverse group of cyanobacteria found in numerous environments, including hot-spring microbial mats, where they are spatially distributed along thermal, light and oxygen gradients. These thermophiles engage in photosynthesis and aerobic respiration during the day, but switch to fermentative metabolism and nitrogen fixation at night. The genome of Synechococcus OS-B', isolated from Octopus Spring (Yellowstone National Park) contains a phn gene cluster encoding a phosphonate (Phn) transporter and a C-P lyase. A closely related isolate, Synechococcus OS-A, lacks this cluster, but contains genes encoding putative phosphonatases (Phnases) that appear to be active only in the presence of the Phn substrate. Both isolates grow well on several different Phns as a sole phosphorus (P) source. Interestingly, Synechococcus OS-B' can use the organic carbon backbones of Phns for heterotrophic growth in the dark, whereas in the light this strain releases organic carbon from Phn as ethane or methane (depending on the specific Phn available); Synechococcus OS-A has neither of these capabilities. These differences in metabolic strategies for assimilating the P and C of Phn by two closely related Synecho...Continue Reading

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Citations

Oct 21, 2011·The ISME Journal·Roi FeingerschOded Béjà
May 21, 2013·Journal of Bacteriology·Maria R Gomez-GarciaDevaki Bhaya
Apr 16, 2014·Trends in Microbiology·Timothy J Williams, Ricardo Cavicchioli
Oct 24, 2012·Environmental Science and Pollution Research International·Giuseppe ForlaniJacek Lipok
Mar 18, 2016·Journal of Phycology·Senjie LinWilliam G Sunda
Apr 30, 2013·Nature Reviews. Microbiology·John W McGrathJohn P Quinn
Mar 27, 2018·Journal of Applied Phycology·Damian Drzyzga, Jacek Lipok
Dec 4, 2019·Applied Biochemistry and Biotechnology·Natalia StosiekMagdalena Klimek-Ochab
Jan 31, 2020·Science Advances·M BižićH-P Grossart
Nov 7, 2021·The Science of the Total Environment·Lu-Yao LiuQilin Wang

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