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Title: Evolution of a Vegetarian Vibrio: Metabolic Specialization of Vibrio breoganii to Macroalgal Substrates

Abstract

ABSTRACT While mostVibrionaceaeare considered generalists that thrive on diverse substrates, including animal-derived material, we show thatVibrio breoganiihas specialized for the consumption of marine macroalga-derived substrates. Genomic and physiological comparisons ofV. breoganiiwith otherVibrionaceaeisolates revealed the ability to degrade alginate, laminarin, and additional glycans present in algal cell walls. Moreover, the widely conserved ability to hydrolyze animal-derived polymers, including chitin and glycogen, was lost, along with the ability to efficiently grow on a variety of amino acids. Ecological data showing associations with particulate algal material but not zooplankton further support this shift in niche preference, and the loss of motility appears to reflect a sessile macroalga-associated lifestyle. Together, these findings indicate that algal polysaccharides have become a major source of carbon and energy inV. breoganii, and these ecophysiological adaptations may facilitate transient commensal associations with marine invertebrates that feed on algae. IMPORTANCEVibrios are often considered animal specialists or generalists. Here, we show thatVibrio breoganiihas undergone massive genomic changes to become specialized on algal carbohydrates. Accompanying genomic changes include massive gene import and loss. These vibrios may help us better understand how algal biomass is degraded in the environment and may serve as a blueprint on how to optimize the conversion of algaemore » to biofuels.« less

Authors:
; ; ; ; ; ; ; ; ORCiD logo;
Publication Date:
Research Org.:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1541705
DOE Contract Number:  
SC0008743
Resource Type:
Journal Article
Journal Name:
Journal of Bacteriology
Additional Journal Information:
Journal Volume: 200; Journal Issue: 15; Journal ID: ISSN 0021-9193
Publisher:
American Society for Microbiology
Country of Publication:
United States
Language:
English
Subject:
Microbiology

Citation Formats

Corzett, Christopher H., Elsherbini, Joseph, Chien, Diana M., Hehemann, Jan-Hendrik, Henschel, Andreas, Preheim, Sarah P., Yu, Xiaoqian, Alm, Eric J., Polz, Martin F., and DiRita, Victor J. Evolution of a Vegetarian Vibrio: Metabolic Specialization of Vibrio breoganii to Macroalgal Substrates. United States: N. p., 2018. Web. doi:10.1128/jb.00020-18.
Corzett, Christopher H., Elsherbini, Joseph, Chien, Diana M., Hehemann, Jan-Hendrik, Henschel, Andreas, Preheim, Sarah P., Yu, Xiaoqian, Alm, Eric J., Polz, Martin F., & DiRita, Victor J. Evolution of a Vegetarian Vibrio: Metabolic Specialization of Vibrio breoganii to Macroalgal Substrates. United States. doi:10.1128/jb.00020-18.
Corzett, Christopher H., Elsherbini, Joseph, Chien, Diana M., Hehemann, Jan-Hendrik, Henschel, Andreas, Preheim, Sarah P., Yu, Xiaoqian, Alm, Eric J., Polz, Martin F., and DiRita, Victor J. Mon . "Evolution of a Vegetarian Vibrio: Metabolic Specialization of Vibrio breoganii to Macroalgal Substrates". United States. doi:10.1128/jb.00020-18.
@article{osti_1541705,
title = {Evolution of a Vegetarian Vibrio: Metabolic Specialization of Vibrio breoganii to Macroalgal Substrates},
author = {Corzett, Christopher H. and Elsherbini, Joseph and Chien, Diana M. and Hehemann, Jan-Hendrik and Henschel, Andreas and Preheim, Sarah P. and Yu, Xiaoqian and Alm, Eric J. and Polz, Martin F. and DiRita, Victor J.},
abstractNote = {ABSTRACT While mostVibrionaceaeare considered generalists that thrive on diverse substrates, including animal-derived material, we show thatVibrio breoganiihas specialized for the consumption of marine macroalga-derived substrates. Genomic and physiological comparisons ofV. breoganiiwith otherVibrionaceaeisolates revealed the ability to degrade alginate, laminarin, and additional glycans present in algal cell walls. Moreover, the widely conserved ability to hydrolyze animal-derived polymers, including chitin and glycogen, was lost, along with the ability to efficiently grow on a variety of amino acids. Ecological data showing associations with particulate algal material but not zooplankton further support this shift in niche preference, and the loss of motility appears to reflect a sessile macroalga-associated lifestyle. Together, these findings indicate that algal polysaccharides have become a major source of carbon and energy inV. breoganii, and these ecophysiological adaptations may facilitate transient commensal associations with marine invertebrates that feed on algae. IMPORTANCEVibrios are often considered animal specialists or generalists. Here, we show thatVibrio breoganiihas undergone massive genomic changes to become specialized on algal carbohydrates. Accompanying genomic changes include massive gene import and loss. These vibrios may help us better understand how algal biomass is degraded in the environment and may serve as a blueprint on how to optimize the conversion of algae to biofuels.},
doi = {10.1128/jb.00020-18},
journal = {Journal of Bacteriology},
issn = {0021-9193},
number = 15,
volume = 200,
place = {United States},
year = {2018},
month = {4}
}