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UV-absorbing bacteria in coral mucus and their response to simulated temperature elevations

DRS at CSIR-National Institute of Oceanography

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Title UV-absorbing bacteria in coral mucus and their response to simulated temperature elevations
 
Creator Ravindran, J.
Kannapiran, E.
Manikandan, B.
Francis, K.
Arora, S.
Karunya, E.
AmitKumar
Singh, S.K.
Jose, J.
 
Subject coral reefs
bacteria
symbiosis
ultraviolet radiation
 
Description Reef-building corals encompass various strategies to defend against harmful ultraviolet (UV) radiation. Coral mucus contains UV-absorbing compounds and has rich prokaryotic diversity associated with it. In this study, we isolated and characterized the UV-absorbing bacteria from the mucus of the corals Porites lutea and Acropora hyacinthus during the pre-summer and summer seasons. A total of 17 UV-absorbing bacteria were isolated and sequenced. The UV-absorbing bacteria showed UV absorption at wavelengths ranging from lambdamax = 333 nm to lambdamin = 208 nm. Analysis of the DNA sequences revealed that the majority of the UV-absorbing bacteria belonged to the family Firmicutes and the remaining belonged to the family Proteobacteria (class Gammaproteobacteria). Comparison of the sequences with the curated database yielded four distinct bacterial groups belonging to the genus Bacillus, Staphylococcus, Salinicoccus and Vibrio. The absorption peaks for the UV-absorbing bacteria shifted to the UV-A range (320?400 nm) when they were incubated at higher temperatures. Deciphering the complex relationship between corals and their associated bacteria will help us to understand their adaptive strategies to various stresses
 
Date 2013-12-10T05:56:35Z
2013-12-10T05:56:35Z
2013
 
Type Journal Article
 
Identifier Coral Reefs, vol.32(4); 2013; 1043-1050
no
http://drs.nio.org/drs/handle/2264/4406
 
Language en
 
Relation Coral_Reefs_32_1043.jpg
 
Rights An edited version of this paper was published by Springer. This paper is for R & D purpose and Copyright [2013] Springer.
 
Publisher Springer