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太湖不同解有机磷菌株胞外碱性磷酸酶活性对蓝藻碎屑的响应 预览 被引量:9
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作者 周纯 宋春雷 +1 位作者 曹秀云 周易勇 《水生生物学报》 CAS CSCD 北大核心 2012年第1期 119-125,共7页
浮游细菌胞外碱性磷酸酶在湖泊磷循环过程中具有关键作用, 但其与生物可利用性磷和颗粒态有机
关键词 解有机磷细菌 碱性磷酸酶 生物可利用性磷 蓝藻 富营养化
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Phosphate-Solubilizing and -Mineralizing Abilities of Bacteria Isolated from Soils 预览 被引量:13
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作者 TAO Guang-Can TIAN Shu-Jun +1 位作者 CAI Miao-Ying XIE Guang-Hui 《土壤圈:英文版》 SCIE CAS CSCD 2008年第4期 515-523,共9页
Microorganisms capable of solubilizing and mineralizing phosphorus (P) pools in soils are considered vital in promoting P bioavailability. The study was conducted to screen and isolate inorganic P-solubilizing bacteri... Microorganisms capable of solubilizing and mineralizing phosphorus (P) pools in soils are considered vital in promoting P bioavailability. The study was conducted to screen and isolate inorganic P-solubilizing bacteria (IPSB) and organic P-mineralizing bacteria (OPMB) in soils taken from subtropical flooded and temperate non-flooded soils, and to compare inorganic P-solubilizing and organic P-solubilizing abilities between IPSB and OPMB. Ten OPMB strains were isolated and identified as Bacillus cereus and Bacillus megaterium, and five IPSB strains as B. megaterium, Burkholderia caryophylli, Pseudomonas cichorii, and Pseudomonas syringae. P-solubilizing and -mineralizing abilities of the strains were measured using the methods taking cellular P into account. The IPSB strains exhibited inorganic P-solubilizing abilities ranging between 25.4-41.7 μg P mL-1 and organic P-mineralizing abilities between 8.2-17.8 μg P mL-1. Each of the OPMB strains also exhibited both solubilizing and mineralizing abilities varying from 4.4 to 26.5 μg P mL-1 and from 13.8 to 62.8 μg P mL-1, respectively. For both IPSB and OPMB strains, most of the P mineralized from the organic P source was incorporated into the bacterial cells as cellular P. A significantly negative linear correlation (P < 0.05) was found between culture pH and P solubilized from inorganic P by OPMB strains. The results suggested that P solubilization and mineralization could coexist in the same bacterial strain. 展开更多
关键词 杆状细菌 磷酸盐 无机物 有机磷 假单胞菌
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