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Isolation and characterization of catechol 2,3-dioxygenase genes from phenanthrene degradersSphingomonas, sp. ZP1 andPseudomonassp. ZP2
Environmental Technology ( IF 2.2 ) Pub Date : 2011-12-01 , DOI: 10.1080/09593330.2011.568007
He-Ping Zhao 1 , Sheng-Hua Liang , Xiaoe Yang
Affiliation  

Two bacterial strains, Sphingomonas sp. ZP1 and Pseudomonas stutzeri sp ZP2, were identified as having phenanthrene-degrading ability and were characterized. The activity of catechol-2,3-dioxygenase (C23O) of both strains was measured. With degradation of phenanthrene with an initial concentration of 250 ppm, the C23O activity of both strain ZP1 and ZP2 increased. The ZP1 strain consumed all phenanthrene at day 6, and strain ZP2 degraded 250 ppm of phenanthrene at around day 5; C23O activity in strain ZP1 reached its peak of 6.92 U at day 6, and C23O activity in strain ZP2 achieved 7.80 U as its peak at day 5. After all phenanthrene (250 ppm) was consumed, C23O activity in both Sphingomonas sp. ZP1 and Pseudomonas stutzeri ZP2 decreased. Analysis of the C23O gene sequence indicated that gene PhnZP1 from strain ZP1 has close sequence similarity with the C23O gene from the nearest strain Sphingomonas. sp. KMG 425 (98% identity), 97% similarity with the C23O gene catA from S. paucimobilis sp. TZS-7, and 94% similar with catE gene from S. sp. HV3. The sequence of the C23O gene PhnZP2 of strain ZP2 has 98% similarity with the cmpE gene from strain S. sp., 92% similarity with the phnE gene from P. sp. DJ77 strain, and 90% similarity with all selected C23O genes from Pseudomonas genus strains.

中文翻译:

从菲降解者鞘氨醇单胞菌属中分离和表征儿茶酚 2,3-双加氧酶基因。ZP1 和假单胞菌。ZP2

两种细菌菌株,鞘氨醇单胞菌属。ZP1 和 Pseudomonas stutzeri sp ZP2 被鉴定为具有菲降解能力并被表征。测量了两种菌株的儿茶酚-2,3-双加氧酶 (C23O) 的活性。随着初始浓度为 250 ppm 的菲降解,菌株 ZP1 和 ZP2 的 C23O 活性增加。ZP1 菌株在第 6 天消耗了所有菲,菌株 ZP2 在第 5 天左右降解了 250 ppm 的菲;菌株 ZP1 中的 C23O 活性在第 6 天达到 6.92 U 的峰值,菌株 ZP2 中的 C23O 活性在第 5 天达到峰值 7.80 U。在所有菲 (250 ppm) 被消耗后,两种鞘氨醇单胞菌中的 C23O 活性。ZP1 和施氏假单胞菌 ZP2 下降。对C23O基因序列的分析表明,来自菌株ZP1的基因PhnZP1与来自最近菌株Sphingomonas的C23O基因具有密切的序列相似性。sp. KMG 425(98% 同一性),与来自 S. paucimobilis sp. 的 C23O 基因 catA 有 97% 的相似性。TZS-7,与来自 S. sp. 的 catE 基因 94% 相似。HV3。菌株ZP2的C23O基因PhnZP2的序列与菌株S. sp.的cmpE基因具有98%的相似性,与来自P. sp.的phnE基因具有92%的相似性。DJ77 菌株,并且与来自假单胞菌属菌株的所有选定的 C23O 基因具有 90% 的相似性。菌株ZP2的C23O基因PhnZP2的序列与菌株S. sp.的cmpE基因具有98%的相似性,与来自P. sp.的phnE基因具有92%的相似性。DJ77 菌株,并且与来自假单胞菌属菌株的所有选定的 C23O 基因具有 90% 的相似性。菌株ZP2的C23O基因PhnZP2的序列与菌株S. sp.的cmpE基因具有98%的相似性,与来自P. sp.的phnE基因具有92%的相似性。DJ77 菌株,并且与来自假单胞菌属菌株的所有选定的 C23O 基因具有 90% 的相似性。
更新日期:2011-12-01
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