179 results match your criteria hainan mangrove


Granatripodins A-B, limonoids featuring a Tricyclo[3.3.1.0]nonane motif: Absolute configuration and agonistic effects on human pregnane-X-receptor.

Bioorg Chem 2021 Apr 5;111:104888. Epub 2021 Apr 5.

School of Pharmaceutical Sciences, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou 510515, PR China; Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, PR China; Institute of Marine Biomedicine, Shenzhen Polytechnic, Shenzhen 518055, PR China. Electronic address:

Two unprecedented limonoids incorporating a sterically encumbered cyclopropane ring, named granatripodins A (1) and B (2), featuring the presence of a tricyclo[3.3.1. Read More

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Microbulbifer hainanensis sp. nov., a moderately halopilic bacterium isolated from mangrove sediment.

Antonie Van Leeuwenhoek 2021 Apr 12. Epub 2021 Apr 12.

College of Food and Pharmaceutical Sciences, Li Dak Sum Yip Yio Chin Kenneth Li Marine Biopharmaceutical Research Center, Ningbo University, Ningbo, 315800, People's Republic of China.

A new bacterium was successfully isolated from a mangrove sediment sample in Haikou City, Hainan Province, China. The organism is a Gram-negative, rod-shaped, non-motile and strictly aerobic bacterium, named NBU-8HK146. Strain NBU-8HK146 was able to grow at temperatures of 10-40 °C, at salinities of 0-11% (w/v) and at pH 5. Read More

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Ocean Currents Drove Genetic Structure of Seven Dominant Mangrove Species Along the Coastlines of Southern China.

Front Genet 2021 8;12:615911. Epub 2021 Mar 8.

Asian Natural Environmental Science Center, The University of Tokyo, Tokyo, Japan.

Mangrove forest ecosystems, which provide important ecological services for marine environments and human activities, are being destroyed worldwide at an alarming rate. The objective of our study was to use molecular data and analytical techniques to separate the effects of historical and contemporary processes on the distribution of mangroves and patterns of population genetic differentiation. Seven mangrove species (, , , , , , and ), which are predominant along the coastlines of South China, were genotyped at nuclear (nSSR) and chloroplast (cpSSR) microsatellite markers. Read More

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Five New Triene Derivatives from the Fungus Penicillium herquei JX4.

Chem Biodivers 2021 Mar 18. Epub 2021 Mar 18.

Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, 571158, P. R. China.

Five undescribed triene derivatives, pinophols B-F (2-6), together with one known compound, pinophol A (1), were obtained from the mangrove endophytic fungus Penicillium herquei JX4. The structures of compounds 1-6 were elucidated using IR, HR-ESI-MS, and NMR methods. The absolute configurations of compounds 1-6 were confirmed by comparing their experimental or calculated ECD spectra. Read More

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Relationships between above- and below-ground carbon stocks in mangrove forests facilitate better estimation of total mangrove blue carbon.

Carbon Balance Manag 2021 Mar 17;16(1). Epub 2021 Mar 17.

Key Laboratory for Earth System Modeling, Ministry of Education, Department of Earth System Science, Tsinghua University, Beijing, 100084,, China.

Background: Although great efforts have been made to quantify mangrove carbon stocks, accurate estimations of below-ground carbon stocks remain unreliable. In this study, we examined the distribution patterns of mangrove carbon stocks in China and other countries using our own field survey data and datasets from published literature. Based on these data, we investigated the possible relationships between above-ground carbon stock (AGC) and below-ground carbon stock (BGC) for mangrove forests, aiming to provide a scientific basis for estimation of total mangrove carbon stocks. Read More

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Diverse and abundant antibiotic resistance genes in mangrove area and their relationship with bacterial communities - A study in Hainan Island, China.

Environ Pollut 2021 May 8;276:116704. Epub 2021 Feb 8.

College of Life Science, Hainan Normal University, Haikou, 571158, China.

Antibiotic resistance genes (ARGs) are emerging contaminants in the environment and have been highlighted as a worldwide environmental and health concern. As important participants in the biogeochemical cycles, mangrove ecosystems are subject to various anthropogenic disturbances, and its microbiota may be affected by various contaminants such as ARGs. This study selected 13 transects of mangrove-covered areas in Hainan, China for sediment sample collection. Read More

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Krishnolides E-K: New limonoids from the Krishna mangrove Xylocarpus moluccensis.

Fitoterapia 2021 Jan 29;150:104835. Epub 2021 Jan 29.

Marine Drugs Research Center, College of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, PR China. Electronic address:

Seven new limonoids, named krishnolides E-K (1-7), including three khayanolides, two mexicanolides, a derivative of trangmolin A, and an andirobin, were isolated from seeds of the Indian Krishna mangrove, Xylocarpus moluccensis. The structures of these limonoids were established by HRESIMS, extensive NMR investigations, and X-ray crystallography. Most notably, the absolute configurations of 1, 5, 6, and 7 were unequivocally determined by single-crystal X-ray diffraction analyses (Cu Kα). Read More

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January 2021

Two new 2,5-diketopiperazine derivatives from mangrove-derived endophytic fungus S30.

Nat Prod Res 2021 Feb 1:1-6. Epub 2021 Feb 1.

Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, Hainan, China.

Two new 2,5-diketopiperazines derivatives (), together with eight known analogs (), were isolated from a culture broth of an endophytic fungus S30, derived from mangrove . Their complete structures were determined by a detailed analysis of spectroscopic data and ECD calculations. The antimicrobial activity and neuroprotective activity of these isolated compounds were also evaluated. Read More

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February 2021

Two new polyketides from endophytic fungus sp. HQD-6 isolated from the Chinese mangrove plant .

J Asian Nat Prod Res 2021 Jan 29:1-7. Epub 2021 Jan 29.

Key Laboratory of Advanced Materials of Tropical Island Resources of Ministry of Education, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China.

Mangrove endophytic fungi were proved to be a prolific resources for bioactive secondary metabolites. Two new polyketides, pestalotiopin B () and pestalotiopyrone N () were obtained from the ethyl acetate extracts of the rice solid cultures of the mangrove endophytic fungus sp. HQD-6. Read More

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January 2021

Characteristics of surface water quality and stable isotopes in Bamen Bay watershed, Hainan Province, China.

PLoS One 2021 22;16(1):e0245438. Epub 2021 Jan 22.

Institute of Wetland Research, Chinese Academy of Forestry, Beijing, China.

Bamen Bay is located at the intersection of the Wenjiao River and Wenchang River in Hainan Province (China), where mangroves have been facing a threat of water quality deterioration. Therefore, it is imperative to study the characteristics of the surface water quality on a watershed scale. Water samples were collected three times from 36 monitoring sites from 2015 to 2016. Read More

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January 2021

Bioactive isocoumarins isolated from a mangrove-derived fungus sp. MGP11.

Nat Prod Res 2021 Jan 18:1-6. Epub 2021 Jan 18.

Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, Hainan, China.

Two new isocoumarins penicimarins L-M (), along with seven known analogues () were isolated from the mangrove-derived fungus sp. MGP11. Compounds - were established by spectroscopic methods and comparison of their circular dichroism (CD) spectra with the literature. Read More

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January 2021

Discovery of Thai mangrove tetranortriterpenoids as agonists of human pregnane-X-receptor and inhibitors against human carboxylesterase 2.

Bioorg Chem 2021 Feb 31;107:104599. Epub 2020 Dec 31.

Marine Drugs Research Center, College of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, PR China. Electronic address:

Human pregnane-X-receptor (hPXR) is considered to be the key target for the treatment of cholestasis and liver injury. Agonists of hPXR are potential drug leads. Potent and selective inhibitors of human carboxylesterase 2 (hCES2) could be utilized to alleviate the toxicity induced by ester drugs. Read More

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February 2021

Bioactive cyclohexene derivatives from a mangrove-derived fungus Cladosporium sp. JJM22.

Fitoterapia 2021 Mar 30;149:104823. Epub 2020 Dec 30.

State Key Laboratory of Quality Study of Traditional Chinese Medicine, Macau University of Science and Technology, China.

Four new cyclohexene derivatives cladoscyclitols A-D (1-4) and one new ribofuranose phenol derivative 4-O-α-D-ribofuranose-2-pentyl-3-phemethylol (5) were obtained from the EtOAC extract of the mangrove-derived endophytic fungus Cladosporium sp. JJM22. The structures were elucidated by extensive NMR and MS analysis, while the absolute configurations of the stereogenic carbons were established based on quantum-chemical electronic circular dichroism calculations or comparison of the optical rotations with those of related compounds. Read More

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Phylogenetic Diversity, Antimicrobial and Antioxidant Potential and Identification of Bioactive Compounds from Culturable Endophytic Fungi Associated with Mangrove Bruguiera sexangula (Lour.) Poir.

Curr Microbiol 2021 Feb 2;78(2):479-489. Epub 2021 Jan 2.

Key Laboratory of Advanced Materials of Tropical Island Resources of Ministry of Education, School of Chemical Engineering and Technology, Hainan University, Haikou, 570228, People's Republic of China.

A total of 96 isolates were obtained from 375 segments, isolated from the healthy roots, stems, leaves, hypocotyls and flowers of Bruguiera sexangula (Lour.) Poir. collected at the Dong Zhai Gang Mangrove Garden on Hainan Island, and 20 independent representative isolates were identified using a combination of morphological and molecular approaches. Read More

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February 2021

Comparative Transcriptome Reveals the Genes' Adaption to Herkogamy of (Jack) Voigt.

Front Genet 2020 8;11:584817. Epub 2020 Dec 8.

National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution, College of Life and Environmental Science, Wenzhou University, Wenzhou, China.

(Jack) Voigt is among the most endangered mangrove species in China. The morphology and evolution of flowers have received substantial attention for their crucial reproductive functions. However, little is known about the genomic regulation of flower development in . Read More

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December 2020

Diketopiperazine and enterotoxin analogues from the mangrove derived-soil sp. SCSIO 41400 and their biological evaluation.

Nat Prod Res 2020 Dec 24:1-8. Epub 2020 Dec 24.

CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China.

A new diketopiperazine, cyclo-(-8-acetoxyl-Pro--Leu) (), together with eight known compounds (-) including three enterotoxins (-), four diketopiperazines (-) and maltol (), were isolated from the mangrove derived-soil sp. SCSIO 41400. The planar structures of all compounds were determined from analysis of NMR spectra, MS, optical rotation and comparing with literature data. Read More

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December 2020

Dynamic change in particulate palladium concentrations in a mangrove wetland water environment and its mechanism in Dongzhai Harbor, China.

Water Sci Technol 2020 Dec;82(11):2503-2512

Analysis and Testing Center, Capital Normal University, Beijing, China.

Palladium (Pd), in platinum group elements (PGEs), is widely used as a catalyst in vehicle exhaust catalytic converters (VECs). The cumulative level of Pd in the environment is growing rapidly, and the potential threat to human health is increasing. In this paper, the mangrove wetland in Dongzhai Harbor, Hainan Province, China, was taken as the research area for the collection of water samples. Read More

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December 2020

Pond aquaculture effluents feed an anthropogenic nitrogen loop in a SE Asian estuary.

Sci Total Environ 2021 Feb 26;756:144083. Epub 2020 Nov 26.

Leibniz Centre for Tropical Marine Research (ZMT), Fahrenheitstrasse 6, 28359 Bremen, Germany; Faculty of Geoscience, University of Bremen, Klagenfurter Strasse, 28359 Bremen, Germany. Electronic address:

Coastal aquaculture expansion resulted in mangrove area loss and ecosystem degradation in the past decades, mainly in tropical Asia. Despite increasing environmental concerns regarding nutrient and organic matter-rich effluents, little is known on the effects on adjacent estuarine and coastal food webs. To assess the impact and fate of anthropogenic nitrogen released from aquaculture facilities, we studied water quality and nitrogen (N) flow across an estuarine food web in an estuary in Hainan, China, using nitrogen stable isotopes (δN). Read More

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February 2021

Spatial distributions, source apportionment and ecological risks of C-C chlorinated paraffins in mangrove sediments from Dongzhai Harbor, Hainan Island.

Environ Pollut 2021 Feb 12;270:116076. Epub 2020 Nov 12.

Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Space and Environment, Beihang University, Beijing, 100191, China. Electronic address:

The spatial distributions, possible sources of C-C chlorinated paraffins (CPs), and the ecological risks posed in mangrove sediment in Dongzhai Harbor (Hainan Island, China) were investigated. Comprehensive two-dimensional gas chromatography combined with electron capture negative ionization mass spectrometry was used to determine 50 C-C CP congener groups. The concentrations of C-CPs, short-chain CPs (SCCPs), and medium-chain CPs (MCCPs) in the mangrove sediment samples were 8. Read More

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February 2021

Niches of nine mangrove species in a -colonized area of Dongzhai Harbor, Hainan Island, China.

Ecol Evol 2020 Oct 4;10(20):11838-11846. Epub 2020 Oct 4.

Key Laboratory of State Forestry Administration on Tropical Forestry Research Research Institute of Tropical Forestry Chinese Academy of Forestry Guangzhou China.

The distribution of mangroves is influenced by the environment. We aimed to understand the ecological adaptability of various mangrove species within the range of the exotic species, Buch.-Ham. Read More

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October 2020

[Distribution and Potential Nitrification Rates of Aerobic Ammonia-Oxidizing Microorganisms in Surface Sediments of Mangrove in Sanya River].

Huan Jing Ke Xue 2020 Aug;41(8):3787-3796

College of Marine Life Science, Ocean University of China, Qingdao 266003, China.

The ammonia oxidation process is a rate-limiting step in nitrification. Ammonia-oxidizing bacteria (AOB) and ammonia-oxidizing archaea (AOA) are the major drivers of ammonia oxidation. Their distribution and relative contributions to nitrification are the research highlights in the nitrogen cycle. Read More

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sp. nov., a bacterium isolated from mangrove sediment.

Int J Syst Evol Microbiol 2020 Dec;70(12):6188-6194

Li Dak Sum Yip Yio Chin Kenneth Li Marine Biopharmaceutical Research Center, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315800, PR China.

A Gram-stain-negative, rod-shaped, motile and strictly aerobic bacterium, designated LHK132, was isolated from a mangrove sediment sample collected in Haikou, Hainan Province, PR China. Strain LHK132 was able to grow at temperatures of 10-45 °C, at salinities of 0-7.0 % (w/v) and at pH 6. Read More

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December 2020

Limonoids with diverse structures of rings-A,B from the Thai mangrove, Xylocarpus moluccensis.

Fitoterapia 2020 Nov 3;147:104737. Epub 2020 Oct 3.

Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, Hainan 571158, PR China; Institute of Marine Biomedicine, Shenzhen Polytechnic, Shenzhen 518055, PR China. Electronic address:

Nine new limonoids, named thaixylomolins S-Z (1-8) and 2-O-acetylthaixylomolin Z (9), were isolated from seeds of the mangrove, Xylocarpus moluccensis, collected in the mangrove swamp of Trang Province, Thailand. Thaixylomolin S (1) is the fourth member of the khayalactone class of limonoids containing a hexahydro-2H-2,5- propanocyclopenta[b]furan motif. Thaixylomolins T-Y (2-7) are structurally diverse mexicanolides; whereas thaixylomolin Z (8) and 2-O-acetylthaixylomolin Z (9) are phragmalin 8,9,30-orthoesters. Read More

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November 2020

One new piperazinedione isolated from a mangrove-derived fungus JX-5.

Nat Prod Res 2020 Oct 4:1-7. Epub 2020 Oct 4.

Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou, People's Republic of China.

One new piperazinedione derivative, nigerpiperazine A (), along with six known compounds () were isolated from the fungus JX-5 from mangrove . Nigerpiperazine A () was elucidated by spectroscopic analyses and C NMR chemical shift calculations, compounds and were determined by X-ray and the CD spectra. The absolute configuration of was identified by X-ray for the first time. Read More

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October 2020

gen. nov., sp. nov., a new member of the from Tielu Harbour, Hainan, PR China.

Int J Syst Evol Microbiol 2020 Nov 23;70(11):5812-5817. Epub 2020 Sep 23.

College of Ocean and Earth Science of Xiamen University, Xiamen City Key Laboratory of Urban Sea Ecological Conservation and Restoration (USER), Xiamen, 361005, PR China.

A novel bacterial strain of the family '' was isolated from mangrove of Tielu Harbour, Hainan, PR China. Strain S-15 was a Gram-stain-negative, short-rod-shaped, yellow-pigmented that could grow at 10-42 °C (optimum, 26-35 °C), at pH 5.0-9. Read More

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November 2020

Uptake and concentration of heavy metals in dominant mangrove species from Hainan Island, South China.

Environ Geochem Health 2021 Apr 19;43(4):1703-1714. Epub 2020 Sep 19.

School of Tourism, Hainan Normal University, Haikou, 571158, Hainan, China.

By investigating three dominant mangrove species, namely Aegiceras corniculatum, Kandelia candel, Ceriops tagal and their rhizosediment in Mangrove wetlands in Hainan Island, this research analyzed absorption, concentration and distribution of heavy metals (Cr, Cu, Zn, As, Cd and Pb) in mangroves. The results found that the concentration of specific heavy metal differs in the different mangrove organs (leaf, stem and root). The content of heavy metals concentrated greatly in roots, but less in leaves and stems. Read More

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Cytospyrone and Cytospomarin: Two New Polyketides Isolated from Mangrove Endophytic Fungus, sp.

Molecules 2020 Sep 15;25(18). Epub 2020 Sep 15.

Key Laboratory of Advanced Materials of Tropical Island Resources of Ministry of Education, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China.

Two new polyketides, cytospyrone (), cytospomarin (), together with three known metabolites dimethoxyphtalide (), integracin A () and integracin B (), were isolated from the culture of sp. from the Chinese mangrove . Their structures were elucidated by extensive spectroscopic analyses and time dependent density functional theory (TDDFT), calculation of electronic circular dichroism (ECD) and optical rotation (OR) data. Read More

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September 2020

Microplastics pollution in mangrove ecosystems: A critical review of current knowledge and future directions.

Sci Total Environ 2021 Jan 27;753:142041. Epub 2020 Aug 27.

Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, Haikou, China; College of Ecology and Environment, Hainan University, Renmin Road, Haikou 570228, China. Electronic address:

Over the last decade, microplastics (MPs, plastic particles <5 mm) as emerging contaminants have received a great deal of international attention, not only because of their continuous accumulation in both marine and terrestrial environment, but also due to their serious threats posed to the environment. Voluminous studies regarding sources, distribution characterization, and fate of MPs in the different environmental compartments (e.g. Read More

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January 2021

Both environmental and spatial variables affect bacterial functional diversity in mangrove sediments at an island scale.

Sci Total Environ 2021 Jan 31;753:142054. Epub 2020 Aug 31.

State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, People's Republic of China; School of Biology, Hainan Normal University, Haikou 571158, People's Republic of China. Electronic address:

Sediment microorganisms are influenced by various biotic and abiotic factors. However, information concerning the spatial factors that determine the functional diversity of sediment bacterial communities at an island scale is limited. Here, we conducted an island-scale study to assess the driving forces governing the functional diversity of sediment bacterial communities in different mangroves around the coast of Hainan Island, southern China. Read More

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January 2021

sp. nov., isolated from mangrove soil.

Int J Syst Evol Microbiol 2020 Oct 27;70(10):5389-5393. Epub 2020 Aug 27.

Institute of Tropical Bioscience and Biotechnology, Hainan Academy of Tropical Agricultural Resource, CATAS, Haikou 571101, PR China.

Strain HB172011 was isolated from mangrove soil sampled at the Bamenbay mangrove forest, PR China. Cells were easily recognized under the microscope as cocci that were usually arranged in distinctive tetrads. Results of phylogenetic analysis based on 16S rRNA gene sequences revealed that the isolate belongs to the genus and has 95. Read More

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October 2020