Genes and novel sRNAs involved in PAHs degradation in marine bacteria Rhodococcus sp. P14 revealed by the genome and transcriptome analysis

• Published in: 3 Biotech Vol. 10; no. 3; p. 140
• Main Authors: Peng, Tao, Kan, Jie, Hu, Jing, Hu, Zhong
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.03.2020; Springer Nature B.V
• Subjects: Agriculture; Alcohol dehydrogenase; Biodegradation; Bioinformatics; Biomaterials; Biotechnology; Cancer Research; Carbon dioxide; Catalase; Chemistry; Chemistry and Materials Science; CoA transferase; Cytochrome P450; Cytochromes P450; Degradation; Dehydrogenases; Gene expression; Genes; Genomes; Hydrocarbon-degrading bacteria; Hydrolase; Original; Original Article; Polycyclic aromatic hydrocarbons; Protocatechuate 3,4-dioxygenase; Rhodococcus; Serine; Serine hydrolase; Stem Cells; Thiolase; Tricarboxylic acid cycle; Biodegradation; PAHs; sRNA; Transcriptome; Rhodococcus
• ISSN: 2190-572X; 2190-5738
• DOI: 10.1007/s13205-020-2133-6

Rhodococcus sp. P14 is able to degrade various polycyclic aromatic hydrocarbons (PAHs). In this study, 6 ring-hydroxylating dioxygenases and 24 monooxygenases genes related to PAHs degradation were identified in its genome. Moreover, various genes, like serine hydrolase, hydratase, alcohol dehydrogenase, protocatechuate 3,4-dioxygenase, β-ketoadipate CoA transferase and β-Ketoadipyl CoA thiolase, which were supposed to be involved in PAHs degradation were also identified. Based on the genome analysis, the proposed PAHs degradation pathway was constructed in P14 strain, which showed that PAHs was degraded into the acetyl CoA and succinyl CoA, then mineralized to CO 2 via the TCA cycle. Furthermore, several genes, including cytochrome P450 (RS16725; RS16695; RS12220), catalase (RS15825), dehydrogenase (RS15755; RS18420) and hydrolase (RS16460; RS24665), showed increased expression level during PAHs degradation according to the transcriptome data. In addition, 12 novel sRNAs which were supposed to have the regulation function in PAHs degradation were identified. This study gives us the outlook of PAHs degradation pathway in Rhodococcus sp. P14. Moreover, it first demonstrates that sRNAs may harbor the regulation function in PAHs degradation.