Characteristics and role of the exocellular polysaccharides produced by five cyanobacteria isolated from phototrophic biofilms growing on stone monuments

Biofouling
Federico RossiRoberto De Philippis

Abstract

Three coccoid and two filamentous cyanobacterial strains were isolated from phototrophic biofilms exposed to intense solar radiation on lithic surfaces of the Parasurameswar Temple and Khandagiri caves, located in Orissa State, India. Based on to their morphological features, the three coccoid strains were assigned to the genera Gloeocapsosis and Gloeocapsa, while the two filamentous strains were assigned to the genera Leptolyngbya and Plectonema. Eleven to 12 neutral and acidic sugars were detected in the slime secreted by the five strains. The secretions showed a high affinity for bivalent metal cations, suggesting their ability to actively contribute to weakening the mineral substrata. The secretion of protective pigments in the polysaccharide layers, namely mycosporine amino acid-like substances (MAAs) and scytonemins, under exposure to UV radiation showed how the acclimation response contributes to the persistence of cyanobacteria on exposed lithoid surfaces in tropical areas.

References

Jan 1, 1995·Applied Microbiology and Biotechnology·B Volesky, H A May-Phillips
Jun 20, 2000·FEMS Microbiology Ecology·B K Pierson, M N Parenteau
Feb 1, 1994·Origins of Life and Evolution of the Biosphere : the Journal of the International Society for the Study of the Origin of Life·G MacLeodM J Russell
Aug 27, 2002·Emerging Infectious Diseases·Rodney M Donlan
May 11, 2005·Microbial Ecology·C A Crispim, C C Gaylarde
Dec 7, 2005·FEMS Microbiology Ecology·Igor I BrownKeith E Cooksey
Feb 9, 2007·FEMS Microbiology Letters·Aharon Oren, Nina Gunde-Cimerman
Feb 28, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Alexis J de Kerchove, Menachem Elimelech
Mar 11, 2008·Applied and Environmental Microbiology·Ernesto MichelettiRoberto De Philippis
Dec 3, 2008·Applied and Environmental Microbiology·Laura BrunoPatrizia Albertano
Aug 8, 2009·Micron : the International Research and Review Journal for Microscopy·Andreas HolzingerCornelius Lütz
May 1, 1995·Microbial Ecology·P TianoL Tomaselli

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Citations

Dec 15, 2012·Extremophiles : Life Under Extreme Conditions·Mickael BaquéDaniela Billi
Jan 15, 2015·Life·Jan-Christoph Kehr, Elke Dittmann
Nov 16, 2013·Journal of Bioscience and Bioengineering·Yusuke KawanoMasaki Ihara
Mar 4, 2014·Biofouling·Franziska Gladis-SchmackaRhena Schumann
Aug 9, 2016·The Science of the Total Environment·Clara UrzìLaura Bruno
Jan 28, 2018·Applied and Environmental Microbiology·Qiang LiQinya Ge
Jul 4, 2018·Scientific Reports·Clodoaldo RoldánManuel Porcar
Nov 5, 2019·Environmental Science and Pollution Research International·Emilie LoustauJean-Luc Rols

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Methods Mentioned

BETA
environmental stress
scraping
PCR
atomic adsorption spectrometry

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