The first evidence of deinoxanthin from Deinococcus sp. Y35 with strong algicidal effect on the toxic dinoflagellate Alexandrium tamarense

Li, Yi; Zhu, Hong; Lei, Xueqian; Zhang, Huajun; Guan, Chengwei; Chen, Zhangran; Zheng, Wei; Xu, Hong; Tian, Yun; Yu, Zhiming; Zheng, Tao

doi:10.1016/j.jhazmat.2015.02.070

Cited by 62 publications

(35 citation statements)

References 51 publications

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“…Algicidal bacteria are the main producers of extracellular active substances, and they have been widely studied for their ability to inhibit the growth of harmful algae. Many algicidal bacteria, such as Acinetobacter (5), Alcaligenes (6), Bacillus (7,8), Deinococcus (9), Hahella (10,11), Mangrovimonas (12), Pseudoalteromonas (13), Pseudomonas (14,15), Streptomyces (16,17), and Vibrio (18,19) species, have the potential to decrease the intensity of HABs. Furthermore, a few algicidal bacteria exhibit broad host ranges and exert effects on a variety of algal species (11,(20)(21)(22).…”

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confidence: 99%

“…Considerable efforts have been devoted to the investigation of environmental conditions that regulate the occurrence and maintenance of P. donghaiense blooms and the cellular responses of this dinoflagellate to different conditions, such as N/P repletion, N/P depletion, different N/P substrates, acidification, and eutrophication (25)(26)(27)(28)(29). Although many algicidal bacteria have been identified and exploited in the control of Microcystis aeruginosa (5,7,14,17,30), Alexandrium tamarense (9,12,18,19), Phaeocystis globosa (8,11,16,(31)(32)(33), and Skeletonema costatum (34)(35)(36)(37), few studies have reported bacteria with algicidal effects against P. donghaiense. Therefore, an effective biocontrol method for the prevention and dissolution of P. donghaiense algal blooms must be developed.…”

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confidence: 99%

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Algicidal Activity of Novel Marine Bacterium Paracoccus sp. Strain Y42 against a Harmful Algal-Bloom-Causing Dinoflagellate, Prorocentrum donghaiense

Zhang

Chen

et al. 2018

Appl Environ Microbiol

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blooms occur frequently in the Yangtze River estuary and the adjacent East China Sea. These blooms have damaged marine ecosystems and caused enormous economic losses over the past 2 decades. Thus, highly efficient, low-cost, ecofriendly approaches must be developed to control blooms. In this study, a bacterial strain (strain Y42) was identified as sp. and was used to lyse The supernatant of the strain Y42 culture was able to lyse, and the algicidal activity of this Y42 supernatant was stable with different temperatures and durations of light exposure and over a wide pH range. In addition to , Y42 showed high algicidal activity against, , and, suggesting that it targets primarily Pyrrophyta. To clarify the algicidal effects of Y42, we assessed algal lysis and determined the chlorophyll contents, photosynthetic activity, and malondialdehyde contents of after exposure to the Y42 supernatant. Scanning electron microscopy and transmission electron microscopy analyses showed that the Y42 supernatant disrupted membrane integrity and caused algal cell breakage at the megacytic zone. Photosynthetic pigment loss and significant declines in both photosynthetic efficiency and the electron transport rate indicated that the Y42 supernatant damaged the photosynthetic system of Malondialdehyde overproduction indicated that the Y42 supernatant caused lipid peroxidation and oxidative damage to membrane systems in the algal cell, ultimately leading to death. The findings of this study reveal the potential of Y42 to remove algal cells from blooms. is one of the most common dinoflagellate species that form harmful algal blooms, which frequently cause serious ecological pollution and pose health hazards to humans and other animals. Screening for bacteria with high algicidal activity against and studying their algicidal processes and characteristics will contribute to an understanding of their algicidal effects and provide a theoretical basis for preventing algal blooms and reducing their harm to the environment. This study reports the algicidal activity and characteristics of against The stability of the algicidal activity of in different environments (including different temperature, pH, and sunlight conditions) indicates its potential for use in the control of blooms.

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Algicidal Activity of Novel Marine Bacterium Paracoccus sp. Strain Y42 against a Harmful Algal-Bloom-Causing Dinoflagellate, Prorocentrum donghaiense

Zhang

Chen

et al. 2018

Appl Environ Microbiol

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“…Li et al . () reported that the bacterium Deinococcus xianganensis Y35 produced a red pigment, and showed a high algicidal effect on the toxic dinoflagellate Alexandrium tamarense . Guan et al .…”

Section: Resultsmentioning

confidence: 99%

“…Bacterial cells could produce algicidal substances without contact with the algal cells, and the algicidal substances implied an inhibitory effect on algal growth. Li et al (2015) reported that the bacterium Deinococcus xianganensis Y35 produced a red pigment, and showed a high algicidal effect on the toxic dinoflagellate Alexandrium tamarense. Guan et al (2014) investigated the lytic effects of different parts of bacterial culture on harmful algal bloom-causing species, Phaeocystis globose; the results indicated that the algal cells were lysed by algicidal active compounds in a cell-free filtrate.…”

Section: Algicidal Activity and Mode Of Action Of Strain H10mentioning

confidence: 99%

“…Li et al (2014aLi et al ( , 2014b) reported a fatty acid compound from the marine bacterium BS02 against A. tamarense. Li et al (2015) isolated an algicidal pigment that showed an efficient algicidal effect on A. tamarense. Comparing the extracellular algicidal substance characteristics of strain h10 with other reported algicidal substances, many different features were seen, which all indicated that the algicidal substance of strain h10 may be a novel algicide for M. aeruginosa 7820.…”

Section: Characteristics Of Extracellular Algicidal Substancesmentioning

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Stress of algicidal substances from a bacterium Exiguobacterium sp. h10 on Microcystis aeruginosa

Liu

et al. 2016

Lett Appl Microbiol

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In this study, the effects of algicidal substances from an algicidal bacterium Exiguobacterium sp. h10 on the toxic cyanobacterium, Microcystis aeruginosa 7820, were first investigated. The algicidal mode of action was confirmed as an indirect attack through the production of algicidal substances. The characteristics of the algicidal substance were determined, especially the functional groups analysis that confirmed the algicidal substances were glycolipid mixtures. With the stress of algicidal substances, the algal chlorophyll a synthesis, cell structure and morphology were seriously damaged. This study proved that algicidal bacteria are promising sources of potential cyanobacterial bloom-control, and provided good procedures for the identification and analysis of an algicidal bacterium and substances.

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Study of the properties of carotenoids and key carotenoid biosynthesis genes from Deinococcus xibeiensis R13

Chu

Liu

et al. 2021

Biotech and App Biochem

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To investigate the properties of carotenoids from the extremophile Deinococcus xibeiensis R13, the factors affecting the stability of carotenoids extracted from D. xibeiensis R13, including temperature, illumination, pH, redox chemicals, metal ions, and food additives, were investigated. The results showed that low temperature, neutral pH, reducing agents, Mn 2+ , and food additives (xylose and glucose) can effectively improve the stability of Deinococcus carotenoids. The carotenoids of D. xibeiensis R13 exhibited strong antioxidant activity, with the scavenging rate of hydroxyl radicals reaching 71.64%, which was higher than the scavenging efficiency for 1,1-diphenyl-2-picrylhydrazyl free radicals and 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) free radicals (44.55 and 27.65%, respectively). In addition, the total antioxidant capacity reached 0.60 U/ml, which was 2.61-fold that of carotenoids from the model strain Deinococcus radiodurans R1. Finally, we predicted the gene clusters encoding carotenoid biosynthesis pathways in the genome of R13 and identified putative homologous genes. The key enzyme genes (crtE, crtB, crtI, crtLm, cruF, crtD, and crtO) in carotenoid synthesis of D. xibeiensis R13 were cloned to construct the multigene coexpression plasmids pET-EBI and pRSF-LmFDO. The carotenoid biosynthesis pathway was heterologously introduced into engineered Escherichia coli EBILmFDO, which exhibited a higher yield (7.14 mg/L) than the original strain. These analysis results can help us to better understand the metabolic synthesis of carotenoids in extremophiles.

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The first evidence of deinoxanthin from Deinococcus sp. Y35 with strong algicidal effect on the toxic dinoflagellate Alexandrium tamarense

Cited by 62 publications

References 51 publications

Algicidal Activity of Novel Marine Bacterium Paracoccus sp. Strain Y42 against a Harmful Algal-Bloom-Causing Dinoflagellate, Prorocentrum donghaiense

Algicidal Activity of Novel Marine Bacterium Paracoccus sp. Strain Y42 against a Harmful Algal-Bloom-Causing Dinoflagellate, Prorocentrum donghaiense

Stress of algicidal substances from a bacterium Exiguobacterium sp. h10 on Microcystis aeruginosa

Study of the properties of carotenoids and key carotenoid biosynthesis genes from Deinococcus xibeiensis R13

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