Genome Sequence of Dickeya solani, a New soft Rot Pathogen of Potato, Suggests its Emergence May Be Related to a Novel Combination of Non-Ribosomal Peptide/Polyketide Synthetase Clusters

Diversity

Linda Garlant¹  Patrik Koskinen³  Leo Rouhiainen²  Pia Laine⁴  Lars Paulin⁴  Petri Auvinen⁴  Liisa Holm³ 

[1] Department of Agricultural Sciences, P.O. Box 27, Latokartanonkaari 7, University of Helsinki, 00014, Finland; E-Mail:;Department of Food and Environmental Sciences, Division of Microbiology, P.O. Box 56, Viikki Biocenter, Viikinkaari 9, University of Helsinki, 00014, Finland; E-Mail:;Department of Biosciences, Division of Genetics, P.O. Box 56, Viikinkaari 9, University of Helsinki, 00014, Finland; E-Mails:;Institute of Biotechnology, P.O.Box 56, Viikinkaari, University of Helsinki, 00014, Finland; E-Mails:

关键词: Dickeya solani;    genome comparison;    NRPS;    PKS;   

DOI  :  10.3390/d5040824

来源: mdpi

【 摘 要 】

Soft rot Enterobacteria in the genera Pectobacterium and Dickeya cause rotting of many crop plants. A new Dickeya isolate has been suggested to form a separate species, given the name Dickeya solani. This bacterium is spreading fast and replacing the closely related, but less virulent, potato pathogens. The genome of D. solani isolate D s0432-1 shows highest similarity at the nucleotide level and in synteny to D. dadantii strain 3937, but it also contains three large polyketide/fatty acid/non-ribosomal peptide synthetase clusters that are not present in D. dadantii 3937. These gene clusters may be involved in the production of toxic secondary metabolites, such as oocydin and zeamine. Furthermore, the D. solani genome harbors several specific genes that are not present in other Dickeya and Pectobacterium species and that may confer advantages for adaptation to new environments. In conclusion, the fast spreading of D. solani may be related to the acquisition of new properties that affect its interaction with plants and other microbes in the potato ecosystem.

【 授权许可】

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