The high temperature tolerance of two Dactylis glomerata materials, D. glom-erata cv. Baoxing and D. glomerata cv. Jinsiling, was evaluated under artificial con-ditions. The relative conductance rate, free proline con...The high temperature tolerance of two Dactylis glomerata materials, D. glom-erata cv. Baoxing and D. glomerata cv. Jinsiling, was evaluated under artificial con-ditions. The relative conductance rate, free proline content and SOD activity in seedling leaves was detected. Results showed that with the increase of temperature, the relative conductance rate and free proline content increased in both two materi-als, while the activity of SOD increased first and then decreased, indicating that the two materials had heat-resistant mechanism. D. glomerata cv. Baoxing presented slightly higher resistance against high temperature under experimental conditions compared with D. glomerata cv. Jinsiling.展开更多
This study investigated estuarine acidification, associated with drainage and excavation of acid sulfate soils, in areas used for commercial cultivation of Sydneyrock oysters (Saccostrea glomerata). Regular measuremen...This study investigated estuarine acidification, associated with drainage and excavation of acid sulfate soils, in areas used for commercial cultivation of Sydneyrock oysters (Saccostrea glomerata). Regular measurements of pH and electrical conductivity were collected in oyster cultivation areas and acidified reaches of the Hastings River estuary and Port Stephens estuary located on the mid north coast of New South Wales, Australia. Water quality information from acidified floodplain drains was also collected in theHastingsRiverfollowing heavy rainfall. Both estuaries experienced acidification of tributaries following periods of heavy rainfall. Drain outflow waters were acidic展开更多
OBJECTIVE:To explore the four Qi of Pfaffia glomerata(PG)and endow this foreign folk herb with the properties of Chinese medicine,make it Chinese medicinal and localized,and could be used as a Chinese medicine.METHODS...OBJECTIVE:To explore the four Qi of Pfaffia glomerata(PG)and endow this foreign folk herb with the properties of Chinese medicine,make it Chinese medicinal and localized,and could be used as a Chinese medicine.METHODS:The normal group,six cold herb groups,six hot herb groups,six cool herb groups,PG prescription group(PGPG),and Dangshen(Radix Codonopsis)prescription group(CPPG)were prepared with corresponding concentrations of water extracts,these herb extracts were administered by gavage to SpragueDawley rats,and the 12 h urine at night on the 29th day of the SD rats in each group were collected,Liquid Chromatograph Mass Spectrometer system was used to analyze them,the best discriminant models for the medicinal properties of cold-hot and cold-cool were set up,so as to the medicinal properties of PGPG,CPPG and PG were predicted.Based on the Progenesis QI,Human Metabolome Database,Kyoto Encyclopedia of Genes and Genomes,MetaboAnalyst 5.0 database,we enriched metabolic pathway and classification mechanism of medicinal properties of cold-cool Chinese herbs and the molecular mechanism of PG prescription.RESULTS:We established a best model of cold-hot herbal discrimination in the positive ion mode,then the probability that PGPG was predicted cold property was 88.9%.Furthermore,a model of cold-cool herbal discrimination was established,then the probability of PGPG containing the cool property was 77.8%.In addition,typical cold and cool herbs mainly affected nine biomarkers such as tyrosine-proline,(R)-3',7-Dihydroxy-2',4'-dimethoxyisoflavane in rats.The regulation trend of PGPG on markers was basically as same as the cool herbs and mainly involved in regulating the two pathways of cytochrome P450 and purine metabolism.CONCLUSION:The results showed PGPG had a cool medicinal property as same as CPPG,and the regulation trend of PGPG on markers was consistent with cool herbs.Therefore,the medicine properties PG and CP should be consistent,and the Traditional Chinese Medicine property of PG was predicted to be neutral.展开更多
The antibacterial effect of the crude methanol extracts and purified fractions of Ctadophora glomerata （Linnaeus） Kutzing （Cladophoraceae） against multidrug resistant human pathogen were investigated. The test bac...The antibacterial effect of the crude methanol extracts and purified fractions of Ctadophora glomerata （Linnaeus） Kutzing （Cladophoraceae） against multidrug resistant human pathogen were investigated. The test bacterial strains were Staphylococcus aureus, Pseudomonas aeruginosa, Streptococcus faecalis, Escherichia coli and S. typhimurium. Ethanol extract （0.5 mg/mL） of Cladophora glomerata inhibited growth of all the test organisms. Primary detection of active compounds showed that maeroalgae （Cladophora glomerata） containing flavonoids, alkaloids, phenols and tannins. Gas Chromatography-Mass Spectrometry was used to know the compounds which responsible of antibacterial activity and they were g-Pentadecanone that was found to be a major compound （42.67%） followed by 8-Octadecanone （22.43%） and Salicylic acid （20.04%） in addition to 10-hexadecaden （8.01%）. These findings suggest the possibility of using the Cladophora glomerata as a novel source of natural antimicrobial agents in pharmaceutical industries.展开更多
基金Supported by Project of Grass Germplasm Resource Protection from Ministry of Agriculture(2130135)National Science and Technology Project of China(2011BAD17B02)Open Project of Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding(2010ZD200-299)~~
文摘The high temperature tolerance of two Dactylis glomerata materials, D. glom-erata cv. Baoxing and D. glomerata cv. Jinsiling, was evaluated under artificial con-ditions. The relative conductance rate, free proline content and SOD activity in seedling leaves was detected. Results showed that with the increase of temperature, the relative conductance rate and free proline content increased in both two materi-als, while the activity of SOD increased first and then decreased, indicating that the two materials had heat-resistant mechanism. D. glomerata cv. Baoxing presented slightly higher resistance against high temperature under experimental conditions compared with D. glomerata cv. Jinsiling.
文摘This study investigated estuarine acidification, associated with drainage and excavation of acid sulfate soils, in areas used for commercial cultivation of Sydneyrock oysters (Saccostrea glomerata). Regular measurements of pH and electrical conductivity were collected in oyster cultivation areas and acidified reaches of the Hastings River estuary and Port Stephens estuary located on the mid north coast of New South Wales, Australia. Water quality information from acidified floodplain drains was also collected in theHastingsRiverfollowing heavy rainfall. Both estuaries experienced acidification of tributaries following periods of heavy rainfall. Drain outflow waters were acidic
基金2018 National Key Research and Development Project:Research on Four Modes of Exploitation of New Sources of Rare and Endangered Chinese Medicine Resources-Research on Foreign Medicinal Materials(No.2018YFC1706100)Jiangxi Provincial Natural Science Foundation Key Project:Synthesis and Properties of Polysaccharide Moleculally-Imprinted Core-shell Microspheres based on Magnetic Micelle Technology(No.20192ACBL20028)。
文摘OBJECTIVE:To explore the four Qi of Pfaffia glomerata(PG)and endow this foreign folk herb with the properties of Chinese medicine,make it Chinese medicinal and localized,and could be used as a Chinese medicine.METHODS:The normal group,six cold herb groups,six hot herb groups,six cool herb groups,PG prescription group(PGPG),and Dangshen(Radix Codonopsis)prescription group(CPPG)were prepared with corresponding concentrations of water extracts,these herb extracts were administered by gavage to SpragueDawley rats,and the 12 h urine at night on the 29th day of the SD rats in each group were collected,Liquid Chromatograph Mass Spectrometer system was used to analyze them,the best discriminant models for the medicinal properties of cold-hot and cold-cool were set up,so as to the medicinal properties of PGPG,CPPG and PG were predicted.Based on the Progenesis QI,Human Metabolome Database,Kyoto Encyclopedia of Genes and Genomes,MetaboAnalyst 5.0 database,we enriched metabolic pathway and classification mechanism of medicinal properties of cold-cool Chinese herbs and the molecular mechanism of PG prescription.RESULTS:We established a best model of cold-hot herbal discrimination in the positive ion mode,then the probability that PGPG was predicted cold property was 88.9%.Furthermore,a model of cold-cool herbal discrimination was established,then the probability of PGPG containing the cool property was 77.8%.In addition,typical cold and cool herbs mainly affected nine biomarkers such as tyrosine-proline,(R)-3',7-Dihydroxy-2',4'-dimethoxyisoflavane in rats.The regulation trend of PGPG on markers was basically as same as the cool herbs and mainly involved in regulating the two pathways of cytochrome P450 and purine metabolism.CONCLUSION:The results showed PGPG had a cool medicinal property as same as CPPG,and the regulation trend of PGPG on markers was consistent with cool herbs.Therefore,the medicine properties PG and CP should be consistent,and the Traditional Chinese Medicine property of PG was predicted to be neutral.
文摘The antibacterial effect of the crude methanol extracts and purified fractions of Ctadophora glomerata （Linnaeus） Kutzing （Cladophoraceae） against multidrug resistant human pathogen were investigated. The test bacterial strains were Staphylococcus aureus, Pseudomonas aeruginosa, Streptococcus faecalis, Escherichia coli and S. typhimurium. Ethanol extract （0.5 mg/mL） of Cladophora glomerata inhibited growth of all the test organisms. Primary detection of active compounds showed that maeroalgae （Cladophora glomerata） containing flavonoids, alkaloids, phenols and tannins. Gas Chromatography-Mass Spectrometry was used to know the compounds which responsible of antibacterial activity and they were g-Pentadecanone that was found to be a major compound （42.67%） followed by 8-Octadecanone （22.43%） and Salicylic acid （20.04%） in addition to 10-hexadecaden （8.01%）. These findings suggest the possibility of using the Cladophora glomerata as a novel source of natural antimicrobial agents in pharmaceutical industries.
