Biology:Xanthomonas citri
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Short description: Species of bacterium
| Xanthomonas citri | |
|---|---|
Scientific classification 
| |
| Domain: | Bacteria |
| Phylum: | Pseudomonadota |
| Class: | Gammaproteobacteria |
| Order: | Xanthomonadales |
| Family: | Xanthomonadaceae |
| Genus: | Xanthomonas |
| Species: | X. citri
|
| Binomial name | |
| Xanthomonas citri (Hasse 1915) Gabriel et al. 1989
| |
Xanthomonas citri is a Gram-negative, rod-shaped bacterium. Although it is harmless for humans, it is a phytopathogen, known for being the causing agent of citrus canker.
Bacterial killing via a secretion system
Xanthomonas 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 predators
Xanthomonas citri also uses type VI secretion system in defense against the predatory amoeba Dictyostelium discoideum.[3]
References
- ↑ "Bacterial killing via a type IV secretion system". Nature Communications 6: 6453. 2015. doi:10.1038/ncomms7453. PMID 25743609. Bibcode: 2015NatCo...6.6453S.
- ↑ "Cryo-EM structure of the bacteria-killing type IV secretion system core complex from Xanthomonas citri". Nature Microbiology 3 (12): 1429–1440. 2018. doi:10.1038/s41564-018-0262-z. PMID 30349081.
- ↑ Bayer-Santos, Ethel; Lima, Lídia dos Passos; Ceseti, Lucas de Moraes; Ratagami, Camila Yuri; de Santana, Eliane Silva; da Silva, Aline Maria; Farah, Chuck Shaker; Alvarez-Martinez, Cristina Elisa (2018). "Xanthomonas citri T6SS mediates resistance to Dictyostelium predation and is regulated by an ECF σ factor and cognate Ser/Thr kinase". Environmental Microbiology 20 (4): 1562–1575. doi:10.1111/1462-2920.14085. ISSN 14622912. PMID 29488354.
Wikidata ☰ Q15637477 entry
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