PMID- 32151246 OWN - NLM STAT- MEDLINE DCOM- 20201111 LR - 20240328 IS - 1471-2164 (Electronic) IS - 1471-2164 (Linking) VI - 21 IP - 1 DP - 2020 Mar 9 TI - Comparative genomics analysis of c-di-GMP metabolism and regulation in Microcystis aeruginosa. PG - 217 LID - 10.1186/s12864-020-6591-3 [doi] LID - 217 AB - BACKGROUND: Cyanobacteria are of special concern because they proliferate in eutrophic water bodies worldwide and affect water quality. As an ancient photosynthetic microorganism, cyanobacteria can survive in ecologically diverse habitats because of their capacity to rapidly respond to environmental changes through a web of complex signaling networks, including using second messengers to regulate physiology or metabolism. A ubiquitous second messenger, bis-(3',5')-cyclic-dimeric-guanosine monophosphate (c-di-GMP), has been found to regulate essential behaviors in a few cyanobacteria but not Microcystis, which are the most dominant species in cyanobacterial blooms. In this study, comparative genomics analysis was performed to explore the genomic basis of c-di-GMP signaling in Microcystis aeruginosa. RESULTS: Proteins involved in c-di-GMP metabolism and regulation, such as diguanylate cyclases, phosphodiesterases, and PilZ-containing proteins, were encoded in M. aeruginosa genomes. However, the number of identified protein domains involved in c-di-GMP signaling was not proportional to the size of M. aeruginosa genomes (4.97 Mb in average). Pan-genome analysis showed that genes involved in c-di-GMP metabolism and regulation are conservative in M. aeruginosa strains. Phylogenetic analysis showed good congruence between the two types of phylogenetic trees based on 31 highly conserved protein-coding genes and sensor domain-coding genes. Propensity for gene loss analysis revealed that most of genes involved in c-di-GMP signaling are stable in M. aeruginosa strains. Moreover, bioinformatics and structure analysis of c-di-GMP signal-related GGDEF and EAL domains revealed that they all possess essential conserved amino acid residues that bind the substrate. In addition, it was also found that all selected M. aeruginosa genomes encode PilZ domain containing proteins. CONCLUSIONS: Comparative genomics analysis of c-di-GMP metabolism and regulation in M. aeruginosa strains helped elucidating the genetic basis of c-di-GMP signaling pathways in M. aeruginosa. Knowledge of c-di-GMP metabolism and relevant signal regulatory processes in cyanobacteria can enhance our understanding of their adaptability to various environments and bloom-forming mechanism. FAU - Chen, Meng AU - Chen M AD - Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, China. FAU - Xu, Chun-Yang AU - Xu CY AD - Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, China. FAU - Wang, Xu AU - Wang X AD - Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, China. FAU - Ren, Chong-Yang AU - Ren CY AD - Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, China. FAU - Ding, Jiao AU - Ding J AD - Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, China. FAU - Li, Li AU - Li L AD - Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, China. lili@sdu.edu.cn. AD - Shandong Provincial Engineering Center on Environmental Science and Technology, Jinan, China. lili@sdu.edu.cn. LA - eng GR - 21577081/Natural Science Foundation of China/ PT - Journal Article DEP - 20200309 PL - England TA - BMC Genomics JT - BMC genomics JID - 100965258 RN - 0 (Escherichia coli Proteins) RN - EC 4.6.- (Phosphorus-Oxygen Lyases) RN - EC 4.6.1.- (diguanylate cyclase) RN - H2D2X058MU (Cyclic GMP) SB - IM MH - Computational Biology MH - Cyclic GMP/*metabolism MH - Escherichia coli Proteins/genetics/metabolism MH - Gene Expression Regulation, Bacterial/*genetics MH - Genomics MH - Microcystis/classification/genetics/*metabolism MH - Phosphorus-Oxygen Lyases/genetics/metabolism MH - Phylogeny MH - Protein Domains MH - Signal Transduction PMC - PMC7063779 OTO - NOTNLM OT - C-di-GMP OT - Comparative genomics OT - EAL OT - GGDEF OT - HD-GYP OT - Microcystis aeruginosa OT - Phylogenetic analysis OT - PilZ COIS- The authors declare that they have no competing interests. EDAT- 2020/03/11 06:00 MHDA- 2020/11/12 06:00 PMCR- 2020/03/09 CRDT- 2020/03/11 06:00 PHST- 2019/09/18 00:00 [received] PHST- 2020/02/19 00:00 [accepted] PHST- 2020/03/11 06:00 [entrez] PHST- 2020/03/11 06:00 [pubmed] PHST- 2020/11/12 06:00 [medline] PHST- 2020/03/09 00:00 [pmc-release] AID - 10.1186/s12864-020-6591-3 [pii] AID - 6591 [pii] AID - 10.1186/s12864-020-6591-3 [doi] PST - epublish SO - BMC Genomics. 2020 Mar 9;21(1):217. doi: 10.1186/s12864-020-6591-3.