Pluralibacter pyrinus
{{Short description|Species of bacterium}}
{{Speciesbox
| image =
| genus = Pluralibacter
| species = pyrinus
| authority = (Chung et al. 1993){{cite journal |last1=Chung |first1=Young Ryun |last2=Brenner |first2=Don J. |last3=Steigerwalt |first3=Arnold G. |last4=Kim |first4=Byung Sup |last5=Kim |first5=Heung Tae |last6=Cho |first6=Kwang Yun |title=Enterobacter pyrinus sp. nov., an Organism Associated with Brown Leaf Spot Disease of Pear Trees |journal=International Journal of Systematic and Evolutionary Microbiology |date=1 January 1993 |volume=43 |issue=1 |pages=157–161 |doi=10.1099/00207713-43-1-157|doi-access=free }} Brady et al. 2013{{cite journal |last1=Brady |first1=C. |last2=Cleenwerck |first2=I. |last3=Venter |first3=S. |last4=Coutinho |first4=T. |last5=De Vos |first5=P. |title=Taxonomic evaluation of the genus Enterobacter based on multilocus sequence analysis (MLSA): Proposal to reclassify E. nimipressuralis and E. amnigenus into Lelliottia gen. nov. as Lelliottia nimipressuralis comb. nov. and Lelliottia amnigena comb. nov., respectively, E. gergoviae and E. pyrinus into Pluralibacter gen. nov. as Pluralibacter gergoviae comb. nov. and Pluralibacter pyrinus comb. nov., respectively, E. cowanii, E. radicincitans, E. oryzae and E. arachidis into Kosakonia gen. nov. as Kosakonia cowanii comb. nov., Kosakonia radicincitans comb. nov., Kosakonia oryzae comb. nov. and Kosakonia arachidis comb. nov., respectively, and E. turicensis, E. helveticus and E. pulveris into Cronobacter as Cronobacter zurichensis nom. nov., Cronobacter helveticus comb. nov. and Cronobacter pulveris comb. nov., respectively, and emended description of the genera Enterobacter and Cronobacter |journal=Systematic and Applied Microbiology |date=1 July 2013 |volume=36 |issue=5 |pages=309–319 |doi=10.1016/j.syapm.2013.03.005|pmid=23632228 |bibcode=2013SyApM..36..309B }}
| synonyms = Enterobacter pyrinus
Erwinia pirina
}}
Pluralibacter pyrinus (formerly Enterobacter pyrinus) is a Gram-negative, motile, facultatively-anaerobic, rod-shaped bacterium.{{cite journal |last1=Brenner |first1=D. J. |last2=Richard |first2=C. |last3=Steigerwalt |first3=A. G. |last4=Asbury |first4=M. A. |last5=Mandel |first5=M. |title=Enterobacter gergoviae sp. nov.: a New Species of Enterobacteriaceae Found in Clinical Specimens and the Environment |journal=International Journal of Systematic Bacteriology |date=1 January 1980 |volume=30 |issue=1 |pages=1–6 |doi=10.1099/00207713-30-1-1|doi-access=free }} P. pyrinus is the causitive agent of brown leaf spot disease of pear trees.
Background
The cause of brown leaf spot disease affecting pear trees in South Korea was first identified as a novel bacterial infection in 1990. The proposed name for the species was Erwinia pirina, but this name was not validly published.{{cite journal |last1=Chung |first1=Y. R. |last2=Kim |first2=B.S. |last3=Kim |first3=H.T. |last4=Cho |first4=K.Y. |title=Erwinia pirina sp. nov., a causal organism of brown leaf spot of pear |journal=Korean Journal of Plant Pathology |date=1990 |volume=6 |issue=3 |page=1}} In 1993, further research grouped the organism in the genus Enterobacter as E. pyrinus. Later studies of the genus Enterobacter lead to the species being reclassified into the novel genus Pluralibacter in 2013. The species name is derived from the Greek word pŷr, which means pear.