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| 1 | Seasonal variation of Microcystis in Lake Taihu and its relationships with environmental factors显示文摘In order to monitor the changes of Microcystis along with temporal and spatial variations, seasonal variation of Microcystis in Lake Taihu was investigated by 16S-23S rRNA internal transcribed spacer denaturing gradient gel electrophoresis (16S-23S rRNA-ITS DGGE) and microscopic evaluation. Samples were collected quarterly at four sites (River Mouth, Meiliang Bay, Cross Area, and Lake Center) from August 2006 to April 2007. Results showed that Microcystis dominated total phytoplankton abundance at the four sites in all seasons except winter. The average annual abundance of Microcystis was relatively high at River Mouth and Meiliang Bay, reaching 81.22 × 106 and 61.32 × 106 cells/L, respectively. For temporal variations, Shannon-Wiener diversity index (H ) according to DGGE profile revealed the richness of Microcystis in summer (H = 1.375 ± 0.034) and winter (H = 1.650 ± 0.032) was lower than that in spring (H = 2.078 ± 0.031) and autumn (H = 2.365 ± 0.032) (P < 0.05). While for spatial variations, the richness of Microcystis at River Mouth (H = 2.015 ± 0.074) was higher than at other sites during four seasons (P < 0.01). Very few dierences of Microcystis diversity in the same season were observed among the other three sites (P > 0.05). Canonical correspondence analysis (CCA) was performed to elucidate the relationships between Microcystis operational taxonomic units (OTUs) composition and the environmental factors. Results of CCA revealed that temperature was strongly positively correlated with the first axis (r = 0.963), while TSS was negative correlated with the second axis (r = -0.716). Phylogenetic tree based on the sequencing results of target bands on DGGE gel indicated that samples collected in summer and winter constituted two separated clusters. | TAN Xiao KONG Fanxiang ZENG Qingfei CAO Huansheng QIAN Shanqin ZHANG Min | 2009 | Journal of Environmental Sciences2009，21，7： | 16 |
| 2 | Induction of apoptosis by casticin in cervical cancer cells: reactive oxygen species-dependent sustained activation of Jun N-terminal kinase显示文摘Casticin,从 Fructus viticis 的 polymethoxyflavone 在中国传统的药用作一个反煽动性的代理人,被报导了有反癌症活动。这研究的目的是在人的颈的癌症房间和它的分子的机制上检验 casticin 的 apoptotic 活动。我们揭示了导致 casticin 的 apoptosis 由发生的新奇机制并且第一次证明 casticin 导致的 apoptosis 通过反应的氧种类(ROS ) 的产生被调停并且在 HeLa 细胞支撑了 c6 月 N 终端 kinase (JNK ) 的激活。Casticin 显著地增加了细胞内部的 ROS 的层次并且导致了 phosphorylated JNK 和 c6 月蛋白质的表示。有 N-acetylcysteine 和 SP600125 的预告的处理有效地在 HeLa 房间由 casticin 稀释了 apoptosis 的正式就职。而且, casticin 在另外的颈的癌症房间线导致了 ROS 生产和 apoptotic 房间死亡,例如 CasKi 和 SiHa。重要地, casticin 没在正常的人的外部血 mononuclear 房间和胚胎的肾上皮引起 ROS 的产生或 apoptosis 的正式就职 293 个房间。这些结果建议由 casticin 的 ROS 产生和持续 JNK 激活在导致 casticin 的 apoptosis 起一个作用并且提起有 casticin 的治疗可能作为对人的颈的癌症的新治疗有希望的可能性。 | Fanxiang Zeng Li Tian Fei Liu Jianguo Cao Meifang Quan Xifeng Sheng | 2012 | Acta Biochimica et Biophysica Sinica2012，44，5： | 9 |
| 3 | Robust and efficient visual tracking under illumination changes based on maximum color difference histogram and min-max-ratio metric显示文摘 | Zeng Fanxiang Liu Xuan Huang Zhitong | 2013 | J Electron Imaging2013，22，04： | 1 |
| 4 | Community structure of aerobic anoxygenic phototrophic bacteria in algae-and macrophyte-dominated areas in Taihu Lake,China显示文摘Aerobic anoxygenic phototrophic bacteria(AAPB)repre sent a major group of bacterioplankton assemblages in many water systems and some are assumed to be closely associated with phytoplankton.However,studies on relationships between AAPB and cyanobacterial blooms are in scarcity.The dynamics of the abundance and diversity of AAPB was compared based on pufM gene in Meiliang Bay(featured by cyanobacterial blooms)and East Bay(featured by macrophyte)of Taihu Lake,a shallow subtropical lake in the East China plain.AAPB abundance was not significantly different between the two sites,and they were positively correlated with dissolved organic carbon(DOC)concentration.The ratios of AAPB to total bacteria varied from 3.4%to 11.5%and peaked in winter in both site s.No significant differences of AAPB community compositions were detected between the two sites,but there was a separation between warm seasons(June,August,and October)and cold seasons(December,February,and April).Rhizobiales and Limnohabitans-like pufM sequences were significantly contributors for the difference between two seasons,and specially enriched in cold seasons.Chlorophyll a(Ch1 a)and DOC were the most significant variables influencing the AAPB community structure.Furthermore,Porphyrobacter and Rhodospirillales-like pufM sequences were positively correlated with Ch1 a,indicating potential influence of cyanobacterial blooms on these AAPB taxa.These results suggested that diverse AAPB ecotypes coexisted in Taihu Lake,and their ecological role in carbon cycling in the lake may not be ignored. | Limei SHI Yuanfeng CAI Xiaoli SHI Min ZHANG Qingfei ZENG Fanxiang KONG Ping XU | 2022 | Journal of Oceanology and Limnology2022，40，5： | 0 |
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