| 词条 | Xanthomonas citri |
| 释义 |
| name = Xanthomonas citri | domain = Bacteria | phylum = Proteobacteria | classis = Gammaproteobacteria | ordo = Xanthomonadales | familia = Xanthomonadaceae | genus = Xanthomonas | binomial = Xanthomonas citri | binomial_authority = (Hasse 1915) Gabriel et al. 1989 }} Xanthomonas citri is a Gram-negative, rod-shaped proteobacteria. Although it is harmless for humans, it is a phytopathogen, known for being the causing agent of citrus canker. Bacterial killing via a secretion systemX. citri uses its type IV secretion system to kill other Gram-negative bacterial species in a contact-dependent manner. The secretion of the effector proteins requires a conserved C-terminal domain, and its bacteriolytic activity is neutralized by a cognate immunity protein.[1][2]Defense against predatorsX. citri uses type VI secretion system in defense against predatory amoeba Dictyostelium discoideum.[3]References1. ^{{cite journal | vauthors = Souza DP, Oka GU, Alvarez-Martinez CE, Bisson-Filho AW, Dunger G, Hobeika L, Cavalcante NS, Alegria MC, Barbosa LR, Salinas RK, Guzzo CR, Farah CS | title = Bacterial killing via a type IV secretion system | journal = Nature Communications | volume = 6 | pages = 6453 | year = 2015 | pmid = 25743609 | doi = 10.1038/ncomms7453 }} {{Taxonbar|from=Q15637477}}{{gammaproteobacteria-stub}}2. ^{{cite journal | vauthors = Sgro GG, Costa TR, Cenens W, Souza DP, Cassago A, Coutinho de Oliveira L, Salinas RK, Portugal RV, Farah CS, Waksman G | title = Cryo-EM structure of the bacteria-killing type IV secretion system core complex from Xanthomonas citri | journal = Nature Microbiology | volume = | pages = | year = 2018 | pmid = 30349081 | doi = 10.1038/s41564-018-0262-z }} 3. ^{{cite journal|last1=Bayer-Santos|first1=Ethel|last2=Lima|first2=Lídia dos Passos|last3=Ceseti|first3=Lucas de Moraes|last4=Ratagami|first4=Camila Yuri|last5=de Santana|first5=Eliane Silva|last6=da Silva|first6=Aline Maria|last7=Farah|first7=Chuck Shaker|last8=Alvarez-Martinez|first8=Cristina Elisa|title=Xanthomonas citri T6SS mediates resistance to Dictyostelium predation and is regulated by an ECF σ factor and cognate Ser/Thr kinase|journal=Environmental Microbiology|volume=20|issue=4|year=2018|pages=1562–1575|issn=14622912|doi=10.1111/1462-2920.14085}} 3 : Xanthomonadales|Bacterial citrus diseases|Bacteria described in 1989 |
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