# Pectobacteriaceae

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Family of bacteria

Pectobacteriaceae Scientific classification Domain: Bacteria Kingdom: Pseudomonadati Phylum: Pseudomonadota Class: Gammaproteobacteria Order: Enterobacterales Family: Pectobacteriaceae Adeolu et al. 2016 Genera Acerihabitans Biostraticola Brenneria Dickeya Lonsdalea Pectobacterium Sodalis Symbiopectobacterium

The ***Pectobacteriaceae*** are a [family](/source/Family_(taxonomy)) of [Gram-negative bacteria](/source/Gram-negative_bacteria) which largely consist of plant pathogens. This family is a member of the order [Enterobacterales](/source/Enterobacterales) in the class [Gammaproteobacteria](/source/Gammaproteobacteria) of the phylum [Pseudomonadota](/source/Pseudomonadota).[1] The type species of this family is *[Pectobacterium](/source/Pectobacterium)*.[2]

The name *Pectobacteriaceae* is derived from the Latin term *Pectobacterium*, referring the type genus of the family and the suffix "-aceae", an ending used to denote a family. Together, *Pectobacteriaceae* refers to a family whose nomenclatural type is the genus *Pectobacterium*.[1]

## Biochemical Characteristics and Molecular Signatures

Source:[1]

Members of the family produce acid from N-acetylglucosamine and are negative for arginine dihydrolase, orthinine decarboxylase and lysine decarboxylase. These bacteria are catalase-positive, oxidase-negative, and do not produce hydrogen disulfide.

Genomic analyses identified four [conserved signature indels](/source/Conserved_signature_indels) (CSIs) that are specific this family in the proteins [transcriptional activator RhaS](/source/Transcriptional_activator), flagellar motor protein MotB, a two-component sensor [histidine kinase](/source/Histidine_kinase) protein and a hypothetical protein.[1] These molecular signatures provide a reliable molecular means for distinguishing members of the family *Pectobacteriaceae* from other families in the order *Enterobacterales* and other bacteria.

## Historical Systematics and Current Taxonomy

*Pectobacteriaceae*, as of 2021, contains eight validly published genera.[2] Members of this family were originally members of the *[Enterobacteriaceae](/source/Enterobacteriaceae) family*, a large phylogenetically unrelated group of species with distinct biochemical characteristics and different ecological niches. The original assignment of species into the family *Enterobacteriaceae* was largely based on 16S rRNA genome sequence analyses, which is known to have low discriminatory power and the results of which changes depends on the algorithm and organism information used. Despite this, the analyses still exhibited polyphyletic branching, indicating the presence of distinct subgroups within the family.[1]

In 2016, Adeolu et al. proposed the division of *Enterobacteriaceae* into 7 novel families based on comparative genomic analyses and the branching pattern of various phylogenetic trees constructed from conserved genome sequences, 16S rRNA sequences and multilocus sequence analyses. Molecular markers, specifically [conserved signature indels](/source/Conserved_signature_indels), specific to this family were also identified as evidence supporting the division independent of phylogenetic trees.[1]

## References

1. ^ [***a***](#cite_ref-Adeolu20163_1-0) [***b***](#cite_ref-Adeolu20163_1-1) [***c***](#cite_ref-Adeolu20163_1-2) [***d***](#cite_ref-Adeolu20163_1-3) [***e***](#cite_ref-Adeolu20163_1-4) [***f***](#cite_ref-Adeolu20163_1-5) Adeolu, M; Alnajar, S; Naushad, S; S Gupta, R (December 2016). ["Genome-based phylogeny and taxonomy of the 'Enterobacteriales': proposal for Enterobacterales ord. nov. divided into the families Enterobacteriaceae, Erwiniaceae fam. nov., Pectobacteriaceae fam. nov., Yersiniaceae fam. nov., Hafniaceae fam. nov., Morganellaceae fam. nov., and Budviciaceae fam. nov"](https://doi.org/10.1099%2Fijsem.0.001485). *[International Journal of Systematic and Evolutionary Microbiology](/source/International_Journal_of_Systematic_and_Evolutionary_Microbiology)*. **66** (12): 5575–5599. [doi](/source/Doi_(identifier)):[10.1099/ijsem.0.001485](https://doi.org/10.1099%2Fijsem.0.001485). [PMID](/source/PMID_(identifier)) [27620848](https://pubmed.ncbi.nlm.nih.gov/27620848).

1. ^ [***a***](#cite_ref-:0_2-0) [***b***](#cite_ref-:0_2-1) ["Family: Pectobacteriaceae"](https://lpsn.dsmz.de/family/pectobacteriaceae). *lpsn.dsmz.de*. Retrieved 2021-06-05.

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Taxon identifiers Pectobacteriaceae Wikidata: Q28735290 Wikispecies: Pectobacteriaceae GBIF: 10522583 IRMNG: 11909050 LPSN: pectobacteriaceae NCBI: 1903410 Open Tree of Life: 5998973 SeqCode Registry: 819

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