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

Ravindran, J.; Ethiraj, Kannapiran; Balakrishnan, M.; Francis, Kyauta; Arora, Shruti; Karunya, E.; Kumar, Amit; Singh, Sanjay; Jose, Jiya

doi:10.1007/s00338-013-1053-x

Cited by 20 publications

(11 citation statements)

References 47 publications

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“…The findings statistically showed that the varied microbiota compositions exhibited a significance at the phylum and genus levels in the pearl oyster P. f. martensii intestines and its association with the surrounding water. Other works also established that many microbial communities of marine invertebrates, such as crustaceans (Harris et al, 1991), sponges (Fan et al, 2012), and corals (Ravindran et al, 2013), differ from those of the environment. Meanwhile, by analyzing the diversity index of pearl oyster intestines and the surrounding water-cultured environments in different sea areas, the richness and diversity of the intestinal flora of P. f. martensii was found FIGURE 5 | Comparison of microbial community between DW and DP (A), HP and DP (B), HW and DW (C), and HW and HP (D) at the phylum level.…”

Section: Discussionmentioning

confidence: 99%

Microbiota Diversity in Pearl Oyster Pinctada fucata martensii Intestine and Its Aquaculture Environment

Zheng

Liao

et al. 2021

Front. Mar. Sci.

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Environmental microbiota plays a vital role in the intestinal microbiota of aquatic organisms. However, data concerning the association between the intestinal microbiota of pearl oyster Pinctada fucata martensii and the surrounding seawater are limited. The existing bacterial communities in pearl oyster intestine and surrounding water from two sites (D and H, within Liusha Bay in Guangdong, China) were investigated using 16S rRNA-based sequencing to explore the relationship among the two. D located in the inner bay, and H located in the open sea area outside bay. Results revealed the richness and diversity of pearl oyster intestinal microbiota to be less than those of the surrounding water, with 38 phyla and 272 genera observed as a result of the classifiable sequence. The microbiota compositions in the intestine and the surrounding water were diversified at the phylum and genus levels, with the sequencing data being statistically significant. However, the functional prediction of microbiota emphasized the overall similarity in the functional profile of the surrounding seawater and intestinal microbiomes. This profile was associated with metabolism of cofactors and vitamin, carbohydrates metabolism, amino acids metabolism, metabolism of terpenoids, and polyketides, metabolism of other amino acids, lipids metabolism, and energy metabolism. Seven common operational taxonomic units (OTUs), which belonged to phyla Tenericutes, Cyanobacteria, and Planctomycetes, were noted in the intestines of pearl oysters from two different sites. These OTUs may be affiliates to the core microbiome of pearl oyster. Significantly different bacterial taxa in the intestines of pearl oysters from two different sites were found at the phylum and genus levels. This finding suggested that the bacterial communities in pearl oyster intestines may exhibit some plasticity to adapt to changes in the surrounding water-cultured environment. This study generally offers constructive discoveries associated with pearl oyster intestinal microbiota and provides guidance for sustainable aquaculture.

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Section: Discussionmentioning

confidence: 99%

Microbiota Diversity in Pearl Oyster Pinctada fucata martensii Intestine and Its Aquaculture Environment

Zheng

Liao

et al. 2021

Front. Mar. Sci.

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“…Unless otherwise stated, all tests were performed in triplicates and wherever required, positive and negative controls were used. The molecular identification, genomic DNA extraction, PCR amplification, and sequencing of the bacterial 16S rRNA gene were carried out as previously described in Ravindran et al [20]. The sequence chromatograms were analysed, edited to remove ambiguous positions, and a contig was generated using BioEdit [21].…”

Section: Methodsmentioning

confidence: 99%

“…The genomic DNA of Salinivibrio sp. HTSP was extracted using the method of Ravindran et al [20]. After assuring the quality of DNA, the sequencing library was prepared using the Nextera DNA library preparation kit (Illumina Inc., San Diego, CA, USA) as per the manufacturer’s instructions.…”

Section: Methodsmentioning

confidence: 99%

Life in High Salt Concentrations with Changing Environmental Conditions: Insights from Genomic and Phenotypic Analysis of Salinivibrio sp.

et al. 2019

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Life in salt pans with varying chemical compositions require special adaptation strategies at both the physiological and molecular level. The Marakkanam salt pan in South India is characterized with a high fluctuation in salinity (19–490 ppt), Ultravioletradiation, and heavy metal concentrations. Several bacterial species have been isolated and identified in the view of phylogenetic analysis and for the subsequent production of industrially important enzymes. However, limited information exists on the genomic basis of their survival under variable environmental conditions. To this extent, we sequenced the whole genome of the Salinivibrio sp. HTSP, a moderately halophilic bacterium. We analysed the physiological and genomic attributes of Salinivibrio sp. HTSP to elucidate the strategies of adaptation under various abiotic stresses. The genome size is estimated to be 3.39 Mbp with a mean G + C content of 50.6%, including 3150 coding sequences. The genome possessed osmotic stress-related coding sequences, and genes involved in different pathways of DNA repair mechanisms and genes related to the resistance to toxic metals were identified. The periplasmic stress response genes and genes of different oxidative stress mechanisms were also identified. The tolerance capacity of the bacterial isolates to heavy metals, UV-radiation, and salinity was also confirmed through appropriate laboratory experiments under controlled conditions.

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“…The mucus, tissue, gastrovascular cavity, and skeleton all form distinct specific micro-habitats, that can harbor different microbial communities providing various benefits to their coral host (Agostini et al, 2012;Ainsworth et al, 2015;Marcelino and Verbruggen, 2016). For example, microbes residing in the surface mucus layer of corals (e.g., Photobacterium, Endozoicimonaceae, and Firmicutes) can provide nutritional benefits to their hosts (Wild et al, 2004), protect them against pathogens through the production of antibiotics and/or occupation of specific niches (Ritchie, 2006;Glasl et al, 2016) and reduce the damaging effects of ultraviolet radiation (Ravindran et al, 2013). Members of the microbial Actinobacteria, Ralstonia, and Endozoicomonas are commonly found in coral tissue Ainsworth et al, 2015;Neave et al, 2016Neave et al, , 2017.…”

Section: Introductionmentioning

confidence: 99%

Host Differentiation and Compartmentalization of Microbial Communities in the Azooxanthellate Cupcorals Tubastrea coccinea and Rhizopsammia goesi in the Caribbean

et al. 2018

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

Cited by 20 publications

References 47 publications

Microbiota Diversity in Pearl Oyster Pinctada fucata martensii Intestine and Its Aquaculture Environment

Microbiota Diversity in Pearl Oyster Pinctada fucata martensii Intestine and Its Aquaculture Environment

Life in High Salt Concentrations with Changing Environmental Conditions: Insights from Genomic and Phenotypic Analysis of Salinivibrio sp.

Host Differentiation and Compartmentalization of Microbial Communities in the Azooxanthellate Cupcorals Tubastrea coccinea and Rhizopsammia goesi in the Caribbean

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