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Soybean(Glycine max)rhizosphere organic phosphorus recycling relies on acid phosphatase activity and specific phosphorusmineralizing-related bacteria in phosphate deficient acidic soils
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作者 Qianqian Chen Qian Zhao +9 位作者 Baoxing Xie Xing Lu Qi Guo Guoxuan Liu Ming Zhou Jihui Tian Weiguo Lu Kang Chen Jiang Tian Cuiyue Liang 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2024年第5期1685-1702,共18页
Bacteria play critical roles in regulating soil phosphorus(P) cycling. The effects of interactions between crops and soil P-availability on bacterial communities and the feedback regulation of soil P cycling by the ba... Bacteria play critical roles in regulating soil phosphorus(P) cycling. The effects of interactions between crops and soil P-availability on bacterial communities and the feedback regulation of soil P cycling by the bacterial community modifications are poorly understood. Here, six soybean(Glycine max) genotypes with differences in P efficiency were cultivated in acidic soils with long-term sufficient or deficient P-fertilizer treatments. The acid phosphatase(AcP) activities, organic-P concentrations and associated bacterial community compositions were determined in bulk and rhizosphere soils. The results showed that both soybean plant P content and the soil AcP activity were negatively correlated with soil organic-P concentration in P-deficient acidic soils. Soil P-availability affected the ɑ-diversity of bacteria in both bulk and rhizosphere soils. However, soybean had a stronger effect on the bacterial community composition, as reflected by the similar biomarker bacteria in the rhizosphere soils in both P-treatments. The relative abundance of biomarker bacteria Proteobacteria was strongly correlated with soil organic-P concentration and AcP activity in low-P treatments. Further high-throughput sequencing of the phoC gene revealed an obvious shift in Proteobacteria groups between bulk soils and rhizosphere soils, which was emphasized by the higher relative abundances of Cupriavidus and Klebsiella, and lower relative abundance of Xanthomonas in rhizosphere soils. Among them, Cupriavidus was the dominant phoC bacterial genus, and it was negatively correlated with the soil organic-P concentration. These findings suggest that soybean growth relies on organic-P mineralization in P-deficient acidic soils, which might be partially achieved by recruiting specific phoCharboring bacteria, such as Cupriavidus. 展开更多
关键词 organic phosphorus acid phosphatase SOYBEAN bacterial community phoC-harboring bacteria RHIZOSPHERE
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Organic and inorganic phosphorus uptake by bacteria in a plug-flow microcosm
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作者 Jinbo ZHAO Xuehua LIU 《Frontiers of Environmental Science & Engineering》 SCIE EI CAS CSCD 2013年第2期173-184,共12页
Phosphorus (P) is a vital nutrient for sustaining natural water productivity. Both particulate and dissolved forms of organic and inorganic P are potentially important sources of bioavailable P for primary and secon... Phosphorus (P) is a vital nutrient for sustaining natural water productivity. Both particulate and dissolved forms of organic and inorganic P are potentially important sources of bioavailable P for primary and secondary producers. A microcosm system to imitate the bacterial community in Plym river sediment and pore water is described and bacterial uptake rates for inorganic and organic phosphorus are presented in this paper. The aim of this study was to investigate the uptake of two organic phosphorus compounds (phytic acid and D-glucose-6- phosphate) by freshwater bacteria. The bioreactors com- prise glass columns packed with two types of small glass beads on which bacterial biofilm can develop. The glass beads with different porosity were introduced to simulate River SPM. The selected P compounds spiked into the inflow of the microcosm, and measured the step change of P concentration in the outflow to investigate the behavior of bacterial uptake of nutrients. The results showed that organic phosphorus was converted into inorganic phos- phorus but the conversion rate depended on the type of phosphorus species. One experiment suggested that phytic acid (refractory) could displace phosphate from the biofilm surface; the other experiment showed that D-glucose-6- phosphate (labile) could be hydrolysed and utilized easily by the bacteria. The results also suggested that bacteria might break down the C-P bonds to utilize the carbon. Further experiments should investigate the effect of varying the C:N:P ratio in the microcosm system to determine which nutrient limits bacteria uptake. 展开更多
关键词 organic phosphorus bacteria uptake
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Modification of total and phosphorus mineralizing bacterial communities associated with Zea mays L.through plant development and fertilization regimes 被引量:1
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作者 XIN Yuan-yuan Anisur RAHMAN +3 位作者 LI Hui-xiu XU Ting DING Guo-chun LI Ji 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2021年第11期3026-3038,共13页
Harnessing the rhizospheric microbiome,including phosphorus mineralizing bacteria(PMB),is a promising technique for maintaining sustainability and productivity in intensive agricultural systems.However,it is unclear a... Harnessing the rhizospheric microbiome,including phosphorus mineralizing bacteria(PMB),is a promising technique for maintaining sustainability and productivity in intensive agricultural systems.However,it is unclear as to which beneficial taxonomic group populations in the rhizosphere are potentially associated with the changes in soil microbiomes shifted by fertilization regimes.Herein,we analyzed the diversity and community structure of total bacteria and PMB in the rhizosphere of maize(Zea mays L.)grown in soils under 25 years of four fertilization regimes(compost,biocompost,chemical,or nonfertilized)via selective culture and Illumina sequencing of the 16S rRNA genes.Plant development explained more variations(29 and 13%,respectively)in the composition of total bacteria and PMB in the rhizosphere of maize than the different fertilization regimes.Among those genera enriched in the rhizosphere of maize,the relative abundances of Oceanobacillus,Bacillus,Achromobacter,Ensifer,Paracoccus,Ramlibacter,and Luteimonas were positively correlated with those in the bulk soil.The relative abundance of Paracoccus was significantly higher in soils fertilized by compost or biocompost than the other soils.Similar results were also observed for PMB affiliated with Ensifer,Bacillus,and Streptomyces.Although plant development was the major factor in shaping the rhizospheric microbiome of maize,fertilization regimes might have modified beneficial rhizospheric microbial taxa such as Bacillus and Ensifer. 展开更多
关键词 organic fertilization bacterial diversity phosphorus mineralizing bacteria(PMB) Zea mays L. RHIZOSPHERE
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Biological nitrogen removal with enhanced phosphate uptake in (AO)2SBR using single sludge system 被引量:11
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作者 JIANGYi-feng WANGLin +2 位作者 WANGBao-zhen HESheng-bing LIUShuo 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2004年第6期1037-1040,共4页
Simultaneous biological phosphorus and nitrogen removal with enhanced anoxic phosphate uptake via nitrite was investigated in an anaerobic-aerobic-anoxic-aerobic sequencing batch reactor((AO)2 SBR). The system showed ... Simultaneous biological phosphorus and nitrogen removal with enhanced anoxic phosphate uptake via nitrite was investigated in an anaerobic-aerobic-anoxic-aerobic sequencing batch reactor((AO)2 SBR). The system showed stable phosphorus and nitrogen removal performance, and average removals for COD, TN and TP were 90%, 91% and 96%, respectively. The conditions of pH 7.5—8.0 and temperature 32℃ were found detrimental to nitrite oxidation bacteria but favorable to ammonia oxidizers, and the corresponding specific oxygen uptake rates(SOUR) for phase 1 and 2 of nitrification process were 0.7 and 15 mgO 2/(gVSS·h) in respect, which led to the nitrite accumulation in aerobic phase of(AO)2 SBR. Respiratory tests showed that 40 mgNO 2-N/L did not deteriorate the sludge activity drastically, and it implied that exposure of sludge to nitrite periodically enabled the biomass to have more tolerance capacity to resist the restraining effects from nitrite. In addition, batch tests were carried out and verified that denitrifying phosphorus accumulation organisms(DPAOs) could be enriched in a single sludge system coexisting with nitrifiers by introducing an anoxic phase in an anaerobic-aerobic SBR, and the ratio of the anoxic phosphate uptake capacity to aerobic phosphate uptake capacity was 45%. It was also found that nitrite(up to 20 mgNO 2-N/L) was not inhibitory to anoxic phosphate uptake and could serve as an electron acceptor like nitrate, but presented poorer efficiency compared with nitrate. 展开更多
关键词 denitrifying phosphorus accumulation organisms(DPAOs) shortcut nitrification and denitrification anoxic phosphate uptake sequencing batch reactor(SBR) NITRITE electron acceptor
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Removal of Nitrogen, Phosphorus, and Organic Pollutants From Water Using Seeding Type Immobilized Microorganisms 被引量:6
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作者 LIN WANG LI-JING HUANG LUO-JIA YUN FEI TANG JING-HUI ZHAO YAN-QUN LIU XIN ZENG QI-FANG LUO 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 2008年第2期150-156,共7页
Objective To study the possibility of removing nitrogen, phosphorus, and organic pollutants using seeding type immobilized microorganisms. Methods Lakes P and M in Wuhan were chosen as the objects to study the removal... Objective To study the possibility of removing nitrogen, phosphorus, and organic pollutants using seeding type immobilized microorganisms. Methods Lakes P and M in Wuhan were chosen as the objects to study the removal of nitrogen, phosphorus, and organic pollutants with the seeding type immobilized microorganisms. Correlations between the quantity of heterotrophic bacteria and the total nitrogen (TN), total phosphorus (TP), and total organic carbon (TOC) in the two lakes were studied. The dominant bacteria were detected, inoculated to the sludge and acclimated by increasing nitrogen, phosphorus and decreasing carbon source in an intermittent, time-controlled and fixed-quantity way. The bacteria were then used to prepare the seeding type immobilized microorganisms, selecting diatomite as the adsorbent cartier. The ability and influence factors of removing nitrogen, phosphorus, and organic pollutant from water samples by the seeding type immobilized microorganisms were studied. Results The coefficients of the heterotrophic bacterial quantity correlated with TOC, TP, and TN were 0.9143, 0.8229, 0.7954 in Lake P and 0.9168, 0.7187, 0.6022 in Lake M. Ten strains of dominant heterotrophic bacteria belonging to Pseudomonas, Coccus, Aeromonas, Bacillus, and Enterobateriaceae, separately, were isolated. The appropriate conditions for the seeding type immobilized microorgansims in purifying the water sample were exposure time=24 h, pH=7.0-8.0, and quantity of the immobilized microorganisms=0.75-1g/50 mL. The removal rates of TOC, TP, and TN under the above conditions were 80.2%, 81.6%, and 86.8%, respectively. Conclusion The amount of heterotrophic bacteria in the two lakes was correlated with TOC, TP, and TN. These bacteria could be acclimatized and prepared for the immobilized microorganisms which could effectively remove nitrogen, phosphorus, and mixed organic pollutants in the water sample. 展开更多
关键词 Heterotrophic bacteria ACCLIMATION Immobilized microorganisms NITROGEN phosphorus Mixed organic pollutants
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Phosphorus Recycling from Wastes
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作者 Ketil Haarstad John Bavor 《Journal of Environmental Protection》 2017年第8期831-843,共13页
The plant phosphorus (P) uptake by Italian ryegrass using organic wastes such as sewage sludge, biochar, composted sewage sludge and spent wetland filters as fertilizer was investigated in pot experiments after manipu... The plant phosphorus (P) uptake by Italian ryegrass using organic wastes such as sewage sludge, biochar, composted sewage sludge and spent wetland filters as fertilizer was investigated in pot experiments after manipulating the wastes pH by mixing with other wastes giving acidification by acetic acid and compost leachate, and liming by concrete waste and lime. Pots with no fertilizer and with mineral fertilizer served as control. Available P was measured both with passive diffuse gradient thin film (DGT) samplers and by P uptake in the grass. The pH in the treated waste was about 4 in the acid treatment, and more than 11 in the high pH treatment. The pH in the pot during the grass production was adjusted to normal levels. The P uptake increased up to 56% after pH treatment of the waste. The P uptake responded both to the high and low pH treatments, probably due to the prevalence of different P species. The more extreme pH treatments gave the highest uptake. The DGT uptake gave the same broad picture in the pots fertilized with biochar but not in pots with sludge, and, also, without the separation between high and low treatments. The passive samplers correlated relatively well with the measured grass uptake. A principal component (PCA) analysis showed that the P uptake as measured by the DGT correlated with P, potassium (K) and silicon (Si) concentrations, at to a lower degrade with iron (Fe) and lead (Pb), and was uncorrelated with nickel (Ni) and cupper (Cu). In summary we can say that the pH treatment of the different organic wastes increased the plant P availability. The smallest increase was in the wetland filter that also had the lowest P total uptake. Also the lupin treatment increased the plant P uptake. 展开更多
关键词 organic WASTE SEWAGE SLUDGE Composted SLUDGE BIOCHAR WETLAND Filters WASTE Mixing pH Treatment phosphorus Plant uptake
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Denitrification and Dephosphatation by Anaerobic/Anoxic Sequencing Batch Reactor 被引量:4
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作者 彭永臻 李勇智 +1 位作者 王淑莹 王亚宜 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2004年第6期877-880,共4页
Removal of denitrifying phosphorus was verified in a laboratory anaerobic/anoxic sequencing batch reactor (A/A SBR). The results obtained demonstrated that the anaerobic/anoxic strategy can enrich the growth of denitr... Removal of denitrifying phosphorus was verified in a laboratory anaerobic/anoxic sequencing batch reactor (A/A SBR). The results obtained demonstrated that the anaerobic/anoxic strategy can enrich the growth of denitrifying phosphorus removing bacteria (DPB) and take up phosphate under anoxic condition by using nitrate as the electron acceptor. The phosphorus removal efficiency was higher than 90% and the effluent phosphate concentration was lower than 1 mg·L-1 after the A/A SBR was operated in a steady-state. When the chemical oxygen demand(COD) of influent was lower than 180mg· L-1, the more COD in the influent was, the higher efficiency of phosphorus removal could be attained under anoxic condition. However, simultaneous presence of carbon and nitrate would be detrimental to denitrifying phosphorus removal. Result of influence of sludge retention time (SRT) on denitrifying phosphorus removal suggested that the decrease of SRT caused a washout of DPB and consequently the enhanced biological phosphorus removal decreased with 8 days SRT. When the SRT was restored to 16 days, however, the efficiency of phosphorus removal was higher than 90%. 展开更多
关键词 denitrifying phosphorus removal anoxic phosphorus uptake biologicalphosphorus removal denitrifying phosphorus removing bacteria
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强化生物除磷体系中的反硝化除磷 被引量:32
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作者 李勇智 彭永臻 +1 位作者 王淑滢 梁秀荣 《中国环境科学》 EI CAS CSSCI CSCD 北大核心 2003年第5期543-546,共4页
采用SBR反应器,研究了以硝酸盐作为电子受体的反硝化除磷过程.结果表明,反硝化聚磷菌存在于传统的强化生物除磷体系中.厌氧段磷的释放和COD的消耗成线性关系.通过厌氧/好氧交替运行方式,反硝化聚磷菌在聚磷菌中的比例从13.3%上升到69.4%... 采用SBR反应器,研究了以硝酸盐作为电子受体的反硝化除磷过程.结果表明,反硝化聚磷菌存在于传统的强化生物除磷体系中.厌氧段磷的释放和COD的消耗成线性关系.通过厌氧/好氧交替运行方式,反硝化聚磷菌在聚磷菌中的比例从13.3%上升到69.4%.稳定运行的厌氧/缺氧SBR反应器具有良好的强化生物除磷和反硝化脱氮性能,缺氧结束时体系中磷浓度小于1mg/L,除磷效率大于89%. 展开更多
关键词 反硝化除磷 缺氧吸磷 反硝化聚磷菌 聚磷菌
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根表功能细菌生物膜及其在土壤有机污染控制与修复中的潜在应用价值 被引量:6
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作者 刘娟 凌婉婷 +2 位作者 盛月慧 顾玉骏 高彦征 《农业环境科学学报》 CAS CSCD 北大核心 2013年第11期2112-2117,共6页
土壤中的有机污染物可从根系进入植物体内,并可进一步通过食物链富集,从而威胁人群健康。植物根际微生物种类繁多、数量巨大,其中很多根际细菌可通过成膜作用在植物根表形成细菌生物膜,协助植物抵抗外界的不良环境或促进植物生长。有机... 土壤中的有机污染物可从根系进入植物体内,并可进一步通过食物链富集,从而威胁人群健康。植物根际微生物种类繁多、数量巨大,其中很多根际细菌可通过成膜作用在植物根表形成细菌生物膜,协助植物抵抗外界的不良环境或促进植物生长。有机污染物在被植物根系吸收的过程中,多需经过根表细菌生物膜这一特殊界面。综述了根际细菌在植物根表的成膜作用,以及根表功能细菌生物膜对污染物根际环境过程的影响及作用机理,分析了利用根表功能细菌生物膜调控植物吸收有机污染物的可行性,试图为防治土壤有机污染、降低作物污染风险、保障农产品安全等提供理论依据。 展开更多
关键词 根表 功能细菌 细菌生物膜 植物吸收 有机污染
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硅酸盐细菌NBT菌株生理特性的研究 被引量:33
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作者 盛下放 黄为一 《土壤学报》 CAS CSCD 北大核心 2001年第4期569-574,共6页
对硅酸盐细菌NBT菌株在以钾长石粉为唯一钾源的培养基中产生的有机酸、氨基酸的种类和含量以及NBT菌株在有氮培养基中产生的植物激素的种类和含量进行了研究。结果表明 ,NBT菌株能合成草酸、酒石酸、柠檬酸和苹果酸等四种有机酸 ,其含... 对硅酸盐细菌NBT菌株在以钾长石粉为唯一钾源的培养基中产生的有机酸、氨基酸的种类和含量以及NBT菌株在有氮培养基中产生的植物激素的种类和含量进行了研究。结果表明 ,NBT菌株能合成草酸、酒石酸、柠檬酸和苹果酸等四种有机酸 ,其含量范围分别为 5 1 6~ 2 1 7 30mgL- 1 ,3 44~ 2 91 94mgL- 1 ,4 0 8~ 1 1 3 31mgL- 1 和 3 1 5~ 1 0 8 89mgL- 1 ;同时 ,NBT菌株能合成多种氨基酸。NBT菌株在有氮培养基中能产生并分泌生长素、赤霉素A3(GA3)、玉米素核苷和异戊烯基腺嘌呤四种激素 ;其浓度分别为 0 5 4~ 3 77nmolml- 1 、0 1 9~ 2 97nmolml- 1 、0 91~ 2 62nmolml- 1 和 5 49~ 31 1 5nmolml- 1 。摇瓶试验表明 ,NBT菌株不仅能分解土壤矿物并释放出其中的钾 ,而且具有很强的吸钾功能。NBT菌株细胞吸持的钾占其解钾量的 88 86%~ 95 0 5 %。 展开更多
关键词 硅酸盐细菌 有机酸 氨基酸 植物激素 钾吸持
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Biomass Fraction of Phosphate-Accumulating Organisms Grown in Anoxic and Aerobic Stages under Optimum Nitrate Concentration
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作者 王晓玲 李娜 +3 位作者 谢添 张芳 董利鹏 殷宝用 《Journal of Donghua University(English Edition)》 EI CAS 2014年第3期278-286,共9页
The effects of nitrate concentration on the capability of phosphorus uptake in the main anoxic stage were investigated.Meanwhile, the biomass fractions — heterotrophs, phosphateaccumulating organisms( PAOs),and nitri... The effects of nitrate concentration on the capability of phosphorus uptake in the main anoxic stage were investigated.Meanwhile, the biomass fractions — heterotrophs, phosphateaccumulating organisms( PAOs),and nitrifying organisms in a pilot-scale enhanced biological phosphorus removal( EBPR) system— were both experimentally and theoretically evaluated( from the mass balance calculations of organic matter, nitrogen and phosphorus),under optimum nitrate concentration in the main anoxic stage,in which the influent chemical oxygen demand( COD)concentration was stabilized at( 290 ± 10) mg·L- 1and the influent total phosphorus( TP) concentration was stabilized at( 7. 0 ± 0. 5)mg · L- 1. In long term operations,the process exhibited high performance in removing organic matter, nitrogen, and phosphorus. Approximately 46. 41% of organic matter,57. 21% of nitrogen,and 48. 14% of phosphorus were removed from the influent in the form of carbon dioxide,nitrogen gas,and polyphosphate,respectively. XH( heterotrophs),XPAO( PAOs),and XAUT( autotrophs) were regarded as the major organisms responsible for biomass production. The yield fractions of XHgrowth in the first anoxic,the second anoxic,and the aerobic stages were 10. 24%,19. 11%,and 19. 71%,respectively; the yield fractions of XPAO growth in the second anoxic and the aerobic stages were 24. 34% and19. 86%,respectively; the yield fraction of XAUTgrowth in the aerobic stage was 6. 74%. These results showed that XHand XPAOformed the major community. Moreover,a higher amount of XPAOgrowth on stored poly-hydroxyalkanoates( PHAs) under the anoxic condition was seen in this EBPR system for municipal wastewater treatment. 展开更多
关键词 biomass anoxic phosphorus uptake HETEROTROPHS phosphate-accumulating organisms nitrifying organisms
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