A study on bacteria associated with three hard coral species from Ninh Thuan waters by epifluorescence and most diluted culture method

Mien, Pham Thi; Hanh, Nguyen Kim; Hiếu, Nguyễn Minh; Thu, Phan Minh; Du, Hoang Trung; Thi, Vo; Hieu, Nguyen Trinh Duc; Dung, Le Tran; Huan, Nguyen Huu

doi:10.15625/1859-3097/19/2/10814

Cited by 3 publications

(2 citation statements)

References 26 publications

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“…Coral samples were collected in May, June, August 2016, and June 2017 by skilled divers (SCUBA) at a depth of 5-7 m at the location at coordinates 109 o 18'28.1"E, 11 o 67'71.7"N, at Hang Rai-Ninh Thuan. The method of sample collection and pretreatment of samples, and analysis of samples and environmental factors are detailed in our previous study [17]. The symbiotic algae, bacteria in healthy coral samples, and bleached coral samples were treated with 1% potassium citrate solution to remove the fluorescent colorants available in corals, then filtered through a 0.02 µm filter (AnodiscTM Whatman) and stained with SYBR Gold (Invitrogen) [18] and examined under a fluorescence optical microscope.…”

Section: Materials and Research Methodsmentioning

confidence: 99%

“…In August 2016, with the lowest PO 4 concentration, bacteria and bacilli increased to overwhelm cocci. Bacteria living on corals of bacilli and bacilli group were negatively correlated [17] with PO 4 content. In contrast, the proportion of cocci and bacilli in water samples over the months did not change significantly, and Anova's test showed that this difference is also not statistically significant (p > 0.05).…”

Section: Total Number Of Heterotrophic Bacteriamentioning

confidence: 98%

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Fluctuation of associated microbial with building reef corals \(\textit{Acropora}\) sp. from Hang Rai, Ninh Thuan

Mien

Nguyen

Thu

et al. 2022

VJMST

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El Niño and the prolonged warm sea surface temperature significantly impacted coral reefs and caused coral bleaching in some parts of the world. This study evaluated the density of symbiotic algae and bacteria associated with the three coral species, namely Acropora hyacinthus, Acropora muricata, and Acropora robusta, collected in Hang Rai, Ninh Thuan in May, June, August 2016, and June 2017. The number of zooxanthellae with each coral species was statistically significant and correlated with several environmental factors, suggesting that symbiotic algae could play a key role in coral health. The number of associated microbial with the three coral species was significantly different; they tended to depend on sampling time rather than coral species-specific. At the time of ENSO (2016), the difference in the total associated bacteria with all three coral species was statistically significant. While the total number of related bacteria with all three species of coral collected in 2017 did not differ from the total of bacteria in ambient water. In conclusion, symbiotic algae tend to be species-specific, whereas bacteria fluctuate significantly over sampling time. Studying the molecular issues of microalgae, the presence, the role of some groups of bacteria involved in the N, C, P, and S cycles, and the influence of environmental parameters should also be encouraged to understand the relationship of coral holobiont better.

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Section: Materials and Research Methodsmentioning

confidence: 99%

Section: Total Number Of Heterotrophic Bacteriamentioning

confidence: 98%

Fluctuation of associated microbial with building reef corals \(\textit{Acropora}\) sp. from Hang Rai, Ninh Thuan

Mien

Nguyen

Thu

et al. 2022

VJMST

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An analysis of the bacterial community in and around scleractinian corals of Phu Quoc Island, Vietnam

Nguyen

Bettarel

Chu

et al. 2023

Regional Studies in Marine Science

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Instrumental use of marine bacteria to stimulate growth in seaweed

Mien,

Minh-thu,

Ngoc Trieu

et al. 2024

J Agr Sci-Tarim Bili

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Marine bacteria are being considered for research and application in medicine, industry, and aquaculture. Bacterial strains derived from the edible algae Caulerpa lentillifera and corals were screened for the production of indole-3-acetic acid (IAA) - a phytohormone of the auxin group. The ability of phosphate solubilization and antimicrobial activities of IAA-producing strains were also implemented in this study. The potent strains were identified by 16sRNA sequencing. The isolate RN06 produced a high amount of IAA, used inorganic phosphate, and inhibited Bacillus subtilis ATCC6633, Escherichia coli O157, and Serratia marcescens PDL100. The IAA producing HRA5 isolated from the hard coral proved phosphate solubilization ability, and showed antimicrobial activity against B. subtilis. Morphology analysis and 16sRNA sequencing revealed that the isolate RN06 was the nearest strain to Bacillus amyloliquefaciens, and HRA5 was affiliated with Pseudomonas sp. The comprehensive report delves into the isolation of bacteria extracted from edible seaweed and corals sourced from the expansive Vietnamese sea. These isolated bacteria strains stand as promising and potentially pivotal subjects for further investigation into the development of microbial fertilizers catered specifically for seaweed farming.

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A study on bacteria associated with three hard coral species from Ninh Thuan waters by epifluorescence and most diluted culture method

Cited by 3 publications

References 26 publications

Fluctuation of associated microbial with building reef corals \(\textit{Acropora}\) sp. from Hang Rai, Ninh Thuan

Fluctuation of associated microbial with building reef corals \(\textit{Acropora}\) sp. from Hang Rai, Ninh Thuan

An analysis of the bacterial community in and around scleractinian corals of Phu Quoc Island, Vietnam

Instrumental use of marine bacteria to stimulate growth in seaweed

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