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Candidatus Liberibacter is a genus of gram-negative bacteria in the Rhizobiaceae family. The term ''Candidatus'' is used to indicate that it has not proved possible to maintain this bacterium in culture. Detection of the liberibacters is based on PCR amplification of their 16S rRNA gene with specific primers. Members of the genus are plant pathogens mostly transmitted by psyllids. The genus was originally spelled Liberobacter.〔(Taxonomy browser )〕 ==Species== Named species include:〔(UniProt Consortium )〕 *''Liberibacter africanus'' - Originating in Africa and a causal agent of huanglongbing, also known as citrus greening disease and vectored by the African citrus psyllid ''Trioza erytreae''.〔(EPPO )〕 *''Liberibacter americanus'' - A novel species from Brazil described in 2005 and associated with huanglongbing, also known as citrus greening disease and vectored by the Asian citrus psyllid ''Diaphorina citri''.〔(‘Candidatus Liberibacter americanus’, associated with citrus huanglongbing (greening disease) in São Paulo State, Brazil )〕 *''Liberibacter asiaticus'' - Originating in Asia and a causal agent of huanglongbing, also known as citrus greening disease and vectored by the Asian citrus psyllid ''Diaphorina citri''.〔(Featured Creatures )〕 *''Liberibacter europaeus'' - A novel species described in 2010, found in pear trees where it seems to cause no symptoms and vectored by the psyllid, ''Cacopsylla pyri''.〔('Candidatus Liberibacter europaeus' sp. nov. that is associated with and transmitted by the psyllid Cacopsylla pyri apparently behaves as an endophyte rather than a pathogen. )〕 *''Liberibacter psyllaurous'' - A novel species described in 2008 from solanaceous host plants potato and tomato and vectored by the potato tomato psyllid (TPP), ''Bactericera cockerelli''.〔(A New Huanglongbing Species, "Candidatus Liberibacter psyllaurous," Found To Infect Tomato and Potato, Is Vectored by the Psyllid Bactericera cockerelli (Sulc) )〕 Liberibacter psyllaurous plays a dual role as a plant pathogen and as an inherited bacterial endosymbiont. This symbiont modifies tomato defenses in favor of itself and its psyllid vector〔(Manipulation of Plant Defense Responses by the Tomato Psyllid (Bactericerca cockerelli) and Its Associated Endosymbiont Candidatus Liberibacter Psyllaurous )〕 *''Liberibacter solanacearum''〔(‘Candidatus Liberibacter solanacearum’, associated with plants in the family Solanaceae )〕 - A causal agent of zebra chip disease in potatoes and vectored by the potato tomato psyllid (TPP), ''Bactericera cockerelli''.〔(Evidence that the Zebra Chip Disease and the Putative Causal Agent Can be Maintained in Potatoes by Grafting and In Vitro )〕 There are five haplotypes described within this species, designated LsoA and LsoB (from solanaceous plants in North America), and LsoC, LsoD and LsoE (from carrots and celery in Europe).〔http://link.springer.com/article/10.1007%2Fs10658-012-0121-3 A new haplotype of “Candidatus Liberibacter solanacearum” identified in the Mediterranean region〕〔http://dx.doi.org/10.1094/PHYTO-07-13-0182-R Association of 'Candidatus Liberibacter solanacearum’ with a vegetative disorder of celery in Spain and development of a real-time PCR method for its detection〕 L. psyllaurous is a synonym for L. solanacearum haplotype A 〔http://link.springer.com/article/10.1007/s10658-010-9737-3 Haplotypes of “Candidatus Liberibacter solanacearum” suggest long-standing separation〕 (identical 16S rRNA genes). *''Liberibacter crescens''〔(Complete genome sequence of Liberibacter crescens BT-1 )〕 - isolated from papaya growing in Puerto Rico. The commonly used abbreviations are Laf, Lam, Las, Leu, Lso and Lcr respectively. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Candidatus Liberibacter」の詳細全文を読む スポンサード リンク
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