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| 1 | Physical and chemical processes promoting dominance of the toxic cyanobacterium Cylindrospermopsis raciborskii显示文摘The freshwater cyanobacterium, Cylindrospermopsis raciborskii (Wo?oszyńska) Seenayya and Subba Raju is a common species in lakes and reservoirs globally. In some areas of the world it can produce cyto- and hepatotoxins (cylindrospermopsins, saxitoxins), making blooms of this species a serious health concern for humans. In the last 10-15 years, there has been a considerable body of research conducted on the ecology, physiology and toxin production of this species and this paper reviews these studies with a focus on the cylindrospermopsin (CYN)-producing strains. C. raciborskii has low light requirements, close to neutral buoyancy, and a wide temperature tolerance, giving it the capacity to grow in many lentic waterbodies. It also has a flexible strategy with respect to nitrogen (N) utilisation; being able to switch between utilising fixed and atmospheric N as sources of N fluctuate. Additionally this species has a high phosphate (DIP) affinity and storage capacity. Like many cyanobacteria, it also has the capacity to use dissolved organic phosphorus (DOP). Changes in nutrient concentrations, light levels and temperature have also been found to affect production of the toxin CYN by this species. However, optimal toxin production does not necessarily occur when growth rates are optimal. Additionally, different strains of C. raciborskii vary in their cell quota of CYN, making it difficult to predict toxin concentrations, based on C. raciborskii cell densities. In summary, the ecological flexibility of this organism means that controlling blooms of C. raciborskii is a difficult undertaking. However, improved understanding of factors promoting the species and toxin production by genetically capable strains will lead to improved predictive models of blooms. | Michele A. BURFORD Timothy W. DAVIS | 2011 | Chinese Journal of Oceanology and Limnology2011，29，4： | 4 |
| 2 | 显示文摘 | Cvetko B F Brungs M P Burford R P | 1998 | Mater Sci1998，23，： | 2 |
| 3 | Ecological damage of submerged macrophyte Myriophyllum spicatum by cell extracts from microcystin(MC)-and non-MC-producing cyanobacteria,Microcystis显示文摘To explore how decomposed Microcystis-dominant cyanobacterial blooms affect submerged macrophytes,the submerged plant Myriophyllum spicatum was exposed to cell extracts from microcystin(MC)-and non-MC-producing Microcystis strains in a laboratory experiment.Results showed that both Mcracystis cell extracts exerted obvious damages to plant biomass,photosynthesis,primary and secondary metabolism measures,and resistance of plant antioxidant systems,with MC-producing Microcystis having stronger effects due to the presence of MCs.Cyanotoxins other than MCs responsible for the negative effects from both strains needs further identification.The Shannon diversity and Chao1 indices of epiphytic and planktonic bacteria were decreased by the cell extracts from both Microcystis strains.However,epiphytic and planktonic bacterial communities responded differently to cell extracts at the genus level.The dominant genera of planktonic bacteria including Enterobacter,Pseudomonas,and Novosphingobium from phylum Proteobacteria,Chryseobacterium from phylum Bacteroidetes,and Microbacterium from Actinobacteriota in the treatments with cell extracts were previously reported to have strains with algicidal and MC-degrading capabilities.B acterial genes associated with energy production and conversion,amino acid transport and metabolism,and inorganic ion transport and metabolism,were more abundant in both treatments than the control for planktonic bacteria,but less abundant for epiphytic bacteria.We speculate that planktonic bacterial communities have the potential to use and degrade substances derived from Microcystis cell extracts,which may be beneficial for M.spicatum to alleviate damages from Microcystis.Further research is needed to verify the structure and function dynamics of epiphytic and planktonic bacteria in the interaction between cyanobacteria and submerged macrophytes. | Yunni GAO Hui YANG Xiaofei GAO Mei LI Man ZHANG Jing DONG Jingxiao ZHANG Longfei LI Xuejun LI Michele A BURFORD | 2022 | Journal of Oceanology and Limnology2022，40，5： | 2 |
| 4 | Response of sorghum to fertilizer phosphorus and its residual in a Vertisol 显示文摘 | Sahrawat K L Rego T J Burford J R | 1995 | Fertilizer Research1995，41，1： | 2 |
| 5 | Nutrient and microbial dynamics in high-intensity, zero-exchange shrimp ponds in Belize显示文摘 | Burford M A Thompson P J Mclntosh R P | 2003 | Aquaculture2003，219，14： | 1 |
| 6 | The contribution of flocculated material to shrimp (Litopenaeus vannamei) nutrition in a highintensity zeroexchange system显示文摘 | Burford M Thompson P J McIntosh R P | 2004 | Aquaculture2004，232，1： | 1 |
| 7 | The rise of harmful cyanobacteria blooms: The potential roles of eutrophication and climate change显示文摘 | J.M. O’Neil T.W. Davis M.A. Burford C.J. Gobler | 2011 | Harmful Algae2011，，： | 1 |
| 8 | Fatigue crack growth in integrally stiffened panels joined using friction stir welding and swept friction stir spot welding显示文摘 | Burford D A Tweedy B M Widener C A | 2008 | Journal of ASTM International2008，5，4： | 1 |
| 9 | Formation of strong ceramified ash from silicone-based compositions显示文摘 | MANSOURI J BURFORD R P CHENG Y B | 2005 | J Mater Sci2005，40，21： | 1 |
| 10 | A general review of polymeric insulation for use in HVDC cables显示文摘 | Hanley T L Burford R P Fleming R J | 2003 | IEEE Electrical Insulation Magazine2003，19，1： | 1 |
| 11 | Newly qualified doctors' perceptions of informal learning from nurses : impli- cations for interprofessional education and practice显示文摘 | Burford B Morrow G Morrison J | 2013 | In- terprof Care2013，27，： | 1 |
| 12 | Deacidifica- tion of black cumin seed oil by selective supereritieal carbon dioxide extraction显示文摘 | Turkay S Burford M D Sangun M K | 1996 | Journal of the American Oil Chemists'' Society1996，73，： | 1 |
| 13 | Ultra - high resolution array painting facilitates breakpoint sequencing显示文摘 | Gribble SM Kalaitzopoulos D Burford DC | 2007 | J Med Genet JT Journal of Medical Genetics2007，44，1： | 1 |
| 14 | The contribution of flocculated material to shrimp (Litopenaeus vannamei) nutrition in high-intensity, zero-exchange system 显示文摘 | BURFORD M A THOMPSON P J MCINTOSH P R | 2004 | Aquaculture2004，232，： | 1 |
| 15 | Optimization of supercritical fluid extraction of volatile constituents from a model plant matrix显示文摘 | SMITH R M BURFORD M D | 1992 | J Chromatogr A1992，600，2： | 1 |
| 16 | Heave of Tunnels beneath the Shell Centre, London, 1959-1986 显示文摘 | Burford D | 1988 | Geotechnique1988，38，1： | 1 |
| 17 | Tougheningof polyvinylchloride through the addition of nanoparticulate calcium carbonate 显示文摘 | KEMAL I WHITTLE A BURFORD R | 2009 | Polymer2009，50，： | 1 |
| 18 | Elemental composition of groundnut leaves as affected by age and iron chlorosis显示文摘 | Sahrawat K L Rao J K Burford J R | 1987 | Journal of Plant Nutrition1987，10，： | 1 |
| 19 | Fungal involvement in bioweathering and biotransformation of rocks and minerals显示文摘 | Burford E P Fomina M Gadd G M | 2003 | Mineral Magaz2003，67，6： | 1 |
| 20 | The fate of nitrogenous waste from shrimp feeding显示文摘 | Burford M A Williams K C | 2001 | Aquaculture2001，198，12： | 1 |
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