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Xanthomonas

October 14, 2023

Xanthomonas (from greek: xanthos – “yellow”; monas – “entity”) is a genus of bacteria, many of which cause plant diseases.[1] There are at least 27 plant associated Xanthomonas spp., that all together infect at least 400 plant species. Different species typically have specific host and/or tissue range and colonization strategies.[1]

Taxonomy Edit

The genus Xanthomonas has been subject of numerous taxonomic and phylogenetic studies and was first described as Bacterium vesicatorium as a pathogen of pepper and tomato in 1921.[2] Dowson[3] later reclassified the bacterium as Xanthomonas campestris and proposed the genus Xanthomonas.[4]Xanthomonas was first described as a monotypic genus and further research resulted in the division into two groups, A and B.[5][6] Later work using DNA:DNA hybridization has served as a framework for the general Xanthomonas species classification.[7][8] Other tools, including multilocus sequence analysis and amplified fragment-length polymorphism, have been used for classification within clades.[9][10] While previous research has illustrated the complexity of the genus Xanthomonas, recent research appears to have resulted in a clearer picture. More recently, genome-wide analysis of multiple Xanthomonas strains mostly supports the previous phylogenies.[11] Xanthomonas spp. are evolutionary linked to opportunistic human pathogen Stenotrophomonas maltophilia, that was previously called Xanthomonas maltophilia.[12] There is a proposal to reorganize Xanthomonas banana and maize/corn pathotypes along the lines of the most recent phylogenetic data.[13]

Morphology and growth Edit

Individual cell characteristics include:

  • Cell type – straight rods
  • Size – 0.4 – 1.0 µm wide by 1.2 – 3.0 µm long
  • Motility – motile by a single polar flagellum

Colony growth characteristics include:

  • Mucoid, convex, and yellow colonies on YDC medium[14]
  • Yellow pigment from xanthomonadin, which contains bromine
  • Most produce large amounts of extracellular polysaccharide
  • Temperature range – 4 to 37 °C, optimal growth 25-30 °C[1]

Biochemical and physiological test results are:


Xanthomonas plant pathogens Edit

 
Symptoms of diseases caused by Xanthomonas[1]

Xanthomonas species can cause bacterial spots and blights of leaves, stems, and fruits on a wide variety of plant species.[15] Pathogenic species show high degrees of specificity and some are split into multiple pathovars, a species designation based on host specificity.

Citrus canker, caused by Xanthomonas citri subsp. citri is an economically important disease of many citrus species (lime, orange, lemon, pamelo, etc.)[11]

Bacterial leaf spot has caused significant crop losses over the years. Causes of this disease include Xanthomonas euvesicatoria and Xanthomonas perforans = [Xanthomonas axonopodis (syn. campestris) pv. vesicatoria], Xanthomonas vesicatoria, and Xanthomonas gardneri. In some areas where infection begins soon after transplanting, the total crop can be lost as a result of this disease.[16] Xanthomonas campestris pv. punicae cause bacterial blight of pomogranate.

Bacterial blight of rice, caused by Xanthomonas oryzae pv. oryzae, is a disease found worldwide and particularly destructive in the rice-producing regions in Asia.[17]

Plant pathogenesis and disease control Edit

 
Xanthomonas spp. life cycle[1]

Contaminated seeds, weeds, infected plant debris are the main route of transmission. Infection starts with epiphytic stage – i.e. bacteria grow on the aerial tissues of plant host (leaf, fruit, etc) followed by endophytic stage when bacteria enter and colonise host tissues through wounds or natural openings. When population of bacteria increases it re-emerges to the surface and is transmitted mainly by wind, rain or through seeds or agricultural machinery, while animal and insect vectors seems to play minor role.[1]

Xanthomonas uses surface polysacharides, adhesion proteins and type IV pili to attach to the surface and can form biofilms to sustain abiotic stresses (UV, drought, etc). Xanthomonas produce xanthomonadins - yellow pigments that protect from radiation caused from natural light. Resistance to UV is mostly conferred by genes related to oxidative stress and DNA repair. Response to light is important in pathogenicity of these bacteria and regulates surface attachment and production of biofilm.[1]

Xanthomonas possess almost all known secretion systems (types I to VI) that play different roles in the life and disease cycle, with type III secretion system (T3SS) being the key factor of pathogenicity.[12] Typically, Xanthomonas T3SS injects a cocktail of 20-30 effector proteins that interfere with plant immune system and various host cellular processes. Many of the effectors are presumably redundant as individual deletions of effector genes does not impair virulence, however mutations in T3SS apparatus has strong effect. Secretion of the effectors is coordinated with expression of other virulence factors via shared regulatory networks.[12] The effector repertoire has been proposed to be a determinant of host specificity.[18] Xanthomonas actively kill other bacterial using type IV secretion system and defend itself from amoeba using type VI secretion system.[19][20][1]

To prevent infections, limiting the introduction of the bacteria is key. Some resistant cultivars of certain plant species are available as this may be the most economical means for controlling this disease. For chemical control, preventative applications are best to reduce the potential for bacterial development. Copper-containing products offer some protection along with field-grade antibiotics such as oxytetracycline, which is labeled for use on some food crops in the United States. Curative applications of chemical pesticides may slow or reduce the spread of the bacterium, but will not cure already diseased plants.[21] It is important to consult chemical pesticide labels when attempting to control bacterial diseases, as different Xanthomonas species can have different responses to these applications. Over-reliance on chemical control methods can also result in the selection of resistant isolates, so these applications should be considered a last resort.

Potential use of bacteriophages is also considered, however major limiting factors are their sensitivity to environmental conditions and in particular to UV radiation. Plant beneficial microorganisms or attenuated strains of Xanthomonas are being tested as a biocontrol reasoning that they could compete by occupying the same niche and even eradicate pathogenic strain. Generation of plant species resistant to Xanthomonas is another potential strategy.[1]

Industrial use Edit

Xanthomonas species produce an edible polysaccharide called xanthan gum that has a wide range of industrial uses, including foods, petroleum products, and cosmetics. Xanthan also plays role in the disease cycle of Xanthomonas.[1] In particular, xanthan gum is one of the main components of biofilm matrix. Biofilms help these bacteria sustain abiotic stresses on the leaf surface. Genes for Xanthan gum biosynthesis comprise the gum operon (gumB-gymM) coding for 12 enzymes.[1] Xanthan production by Xanthomonas spp. that thrive in vascular plant systems might block the water flow of the plant and as a result cause wilting.[12]

Xanthomonas resources Edit

Isolates of most species of Xanthomonas are available from the National Collection of Plant Pathogenic Bacteria in the United Kingdom and other international culture collections such as ICMP in New Zealand, CFBP in France, and VKM in Russia. It also can be taken out from MTCC India.

Multiple genomes of Xanthomonas have been sequenced and additional data sets/tools are available at The Xanthomonas Resource.[22]

References Edit

  1. ^ a b c d e f g h i j k l An SQ, Potnis N, Dow M, Vorhölter FJ, He YQ, Becker A, et al. (October 2019). "Mechanistic insights into host adaptation, virulence and epidemiology of the phytopathogen Xanthomonas". FEMS Microbiology Reviews. 44 (1): 1–32. doi:10.1093/femsre/fuz024. PMC 8042644. PMID 31578554.
  2. ^ Doidge EM (1921). "A tomato canker". Annals of Applied Biology. 7 (4): 407–30. doi:10.1111/j.1744-7348.1921.tb05528.x.
  3. ^ Dowson WJ (1939). "On the systematic position and generic names of the Gram-negative bacterial plant pathogens". Zentralblatt für Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene: 177–193.
  4. ^ Young JM, Dye DW, Bradbury JF, Panagopoulos CG, Robbs CF (1978). "A proposed nomenclature and classification for plant pathogenic bacteria". New Zealand Journal of Agricultural Research. 21 (1): 153–177. doi:10.1080/00288233.1978.10427397. ISSN 0028-8233.
  5. ^ Stall RE, Beaulieu C, Egel DS (1994). "Two genetically diverse groups of strains are included in Xanthomonas campestris pv. vesicatoria". Int J Syst Bacteriol. 44: 47–53. doi:10.1099/00207713-44-1-47.
  6. ^ Vauterin L, Swings J, Kersters K, Gillis M, Mew TW, Schroth MN, et al. (1990). "Towards an improved taxonomy of Xanthomonas". Int J Syst Bacteriol. 40 (3): 312–316. doi:10.1099/00207713-40-3-312.
  7. ^ Rademaker JL, Louws FJ, Schultz MH, Rossbach U, Vauterin L, Swings J, de Bruijn FJ (September 2005). "A comprehensive species to strain taxonomic framework for xanthomonas". Phytopathology. 95 (9): 1098–111. doi:10.1094/phyto-95-1098. PMID 18943308.
  8. ^ Vauterin L, Hoste B, Kersters K, Swings J (1995). "Reclassification of Xanthomonas". Int J Syst Evol Microbiol. 45 (3): 472–489. doi:10.1099/00207713-45-3-472.
  9. ^ Ah-You N, Gagnevin L, Grimont PA, Brisse S, Nesme X, Chiroleu F, et al. (February 2009). "Polyphasic characterization of xanthomonads pathogenic to members of the Anacardiaceae and their relatedness to species of Xanthomonas". International Journal of Systematic and Evolutionary Microbiology. 59 (Pt 2): 306–18. doi:10.1099/ijs.0.65453-0. PMID 19196770.
  10. ^ Young JM, Wilkie JP, Park DS, Watson DR (2010). "New Zealand strains of plant pathogenic bacteria classified by multi-locus sequence analysis; proposal of Xanthomonas dyei sp. nov". Plant Pathol. 59 (2): 270–281. doi:10.1111/j.1365-3059.2009.02210.x.
  11. ^ a b Rodriguez-R LM, Grajales A, Arrieta-Ortiz ML, Salazar C, Restrepo S, Bernal A (March 2012). "Genomes-based phylogeny of the genus Xanthomonas". BMC Microbiology. 12: 43. doi:10.1186/1471-2180-12-43. PMC 3359215. PMID 22443110.
  12. ^ a b c d Büttner D, Bonas U (March 2010). "Regulation and secretion of Xanthomonas virulence factors". FEMS Microbiology Reviews. 34 (2): 107–33. doi:10.1111/j.1574-6976.2009.00192.x. PMID 19925633.
  13. ^ Studholme, David J.; Wicker, Emmanuel; Abrare, Sadik Muzemil; Aspin, Andrew; Bogdanove, Adam; Broders, Kirk; Dubrow, Zoe; Grant, Murray; Jones, Jeffrey B.; Karamura, Georgina; Lang, Jillian; Leach, Jan; Mahuku, George; Nakato, Gloria Valentine; Coutinho, Teresa; Smith, Julian; Bull, Carolee T. (2020). "Transfer of Xanthomonas campestris pv. arecae and X. campestris pv. musacearum to X. vasicola (Vauterin) as X. vasicola pv. arecae comb. nov. and X. vasicola pv. musacearum comb. nov. and Description of X. vasicola pv. vasculorum pv. nov". Phytopathology. American Phytopathological Society. 110 (6): 1153–1160. doi:10.1094/phyto-03-19-0098-le. ISSN 0031-949X. PMID 31922946.
  14. ^ a b c Schaad NW, Jones JB, Chun W (2001). "Laboratory Guide for Identification of Plant Pathogenic Bacteria 3rd Ed": 175–199. {{cite journal}}: Cite journal requires |journal= (help)
  15. ^ Boch J, Bonas U (September 2010). "Xanthomonas AvrBs3 family-type III effectors: discovery and function". Annual Review of Phytopathology. 48: 419–36. doi:10.1146/annurev-phyto-080508-081936. PMID 19400638.
  16. ^ Ritchie DF (2000). "Bacterial spot of pepper and tomato". The Plant Health Instructor. doi:10.1094/PHI-I-2000-1027-01.
  17. ^ Mew TW, Alvarez AM, Leach JE, Swings J (1993). "Focus on bacterial blight of rice". Plant Disease. 77: 5–13. doi:10.1094/pd-77-0005.
  18. ^ Hajri A, Brin C, Hunault G, Lardeux F, Lemaire C, Manceau C, et al. (August 2009). Yang CH (ed.). "A "repertoire for repertoire" hypothesis: repertoires of type three effectors are candidate determinants of host specificity in Xanthomonas". PLOS ONE. 4 (8): e6632. Bibcode:2009PLoSO...4.6632H. doi:10.1371/journal.pone.0006632. PMC 2722093. PMID 19680562.
  19. ^ Souza DP, Oka GU, Alvarez-Martinez CE, Bisson-Filho AW, Dunger G, Hobeika L, et al. (March 2015). "Bacterial killing via a type IV secretion system". Nature Communications. 6 (1): 6453. Bibcode:2015NatCo...6.6453S. doi:10.1038/ncomms7453. PMID 25743609.
  20. ^ Bayer-Santos E, Lima LD, Ceseti LM, Ratagami CY, de Santana ES, da Silva AM, et al. (April 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. PMID 29488354. S2CID 3579518.
  21. ^ Ellis SD, Boehm MJ, Coplin D (2008). "Bacterial Diseases of Plants". Ohio State University Fact Sheet.
  22. ^ Koebnik R (7 August 2012), The Xanthomonas Resource

October 14, 2023
xanthomonas, from, greek, xanthos, yellow, monas, entity, genus, bacteria, many, which, cause, plant, diseases, there, least, plant, associated, that, together, infect, least, plant, species, different, species, typically, have, specific, host, tissue, range, . Xanthomonas from greek xanthos yellow monas entity is a genus of bacteria many of which cause plant diseases 1 There are at least 27 plant associated Xanthomonas spp that all together infect at least 400 plant species Different species typically have specific host and or tissue range and colonization strategies 1 XanthomonasXanthomonas translucens growing on sucrose peptone agar showing yellow pigmentScientific classificationDomain BacteriaPhylum PseudomonadotaClass GammaproteobacteriaOrder XanthomonadalesFamily XanthomonadaceaeGenus XanthomonasDowson 1939SpeciesX albilineans X alfalfae X ampelina X arboricola X axonopodis X boreopolis X badrii X bromi X campestris X cassavae X citri X codiaei X cucurbitae X cyanopsidis X cynarae X euvesicatoria X frageriae X gardneri X holcicola X hortorum X hyacinthi X maliensisX malvacearum X maltophila X manihotis X melonis X oryzae X papavericola X perforans X phaseoli X pisi X populi X sacchari X theicola X translucens X vasicola X vesicatoria Contents 1 Taxonomy 2 Morphology and growth 3 Xanthomonas plant pathogens 4 Plant pathogenesis and disease control 5 Industrial use 6 Xanthomonas resources 7 ReferencesTaxonomy EditThe genus Xanthomonas has been subject of numerous taxonomic and phylogenetic studies and was first described as Bacterium vesicatorium as a pathogen of pepper and tomato in 1921 2 Dowson 3 later reclassified the bacterium as Xanthomonas campestris and proposed the genus Xanthomonas 4 Xanthomonas was first described as a monotypic genus and further research resulted in the division into two groups A and B 5 6 Later work using DNA DNA hybridization has served as a framework for the general Xanthomonas species classification 7 8 Other tools including multilocus sequence analysis and amplified fragment length polymorphism have been used for classification within clades 9 10 While previous research has illustrated the complexity of the genus Xanthomonas recent research appears to have resulted in a clearer picture More recently genome wide analysis of multiple Xanthomonas strains mostly supports the previous phylogenies 11 Xanthomonas spp are evolutionary linked to opportunistic human pathogen Stenotrophomonas maltophilia that was previously called Xanthomonas maltophilia 12 There is a proposal to reorganize Xanthomonas banana and maize corn pathotypes along the lines of the most recent phylogenetic data 13 Morphology and growth EditIndividual cell characteristics include Cell type straight rods Size 0 4 1 0 µm wide by 1 2 3 0 µm long Motility motile by a single polar flagellumColony growth characteristics include Mucoid convex and yellow colonies on YDC medium 14 Yellow pigment from xanthomonadin which contains bromine Most produce large amounts of extracellular polysaccharide Temperature range 4 to 37 C optimal growth 25 30 C 1 Biochemical and physiological test results are Gram stain negative Obligate aerobes 1 Catalase positive 14 Oxidase negative 14 Xanthomonas plant pathogens Edit nbsp Symptoms of diseases caused by Xanthomonas 1 Xanthomonas species can cause bacterial spots and blights of leaves stems and fruits on a wide variety of plant species 15 Pathogenic species show high degrees of specificity and some are split into multiple pathovars a species designation based on host specificity Citrus canker caused by Xanthomonas citri subsp citri is an economically important disease of many citrus species lime orange lemon pamelo etc 11 Bacterial leaf spot has caused significant crop losses over the years Causes of this disease include Xanthomonas euvesicatoria and Xanthomonas perforans Xanthomonas axonopodis syn campestris pv vesicatoria Xanthomonas vesicatoria and Xanthomonas gardneri In some areas where infection begins soon after transplanting the total crop can be lost as a result of this disease 16 Xanthomonas campestris pv punicae cause bacterial blight of pomogranate Bacterial blight of rice caused by Xanthomonas oryzae pv oryzae is a disease found worldwide and particularly destructive in the rice producing regions in Asia 17 Plant pathogenesis and disease control Edit nbsp Xanthomonas spp life cycle 1 Contaminated seeds weeds infected plant debris are the main route of transmission Infection starts with epiphytic stage i e bacteria grow on the aerial tissues of plant host leaf fruit etc followed by endophytic stage when bacteria enter and colonise host tissues through wounds or natural openings When population of bacteria increases it re emerges to the surface and is transmitted mainly by wind rain or through seeds or agricultural machinery while animal and insect vectors seems to play minor role 1 Xanthomonas uses surface polysacharides adhesion proteins and type IV pili to attach to the surface and can form biofilms to sustain abiotic stresses UV drought etc Xanthomonas produce xanthomonadins yellow pigments that protect from radiation caused from natural light Resistance to UV is mostly conferred by genes related to oxidative stress and DNA repair Response to light is important in pathogenicity of these bacteria and regulates surface attachment and production of biofilm 1 Xanthomonas possess almost all known secretion systems types I to VI that play different roles in the life and disease cycle with type III secretion system T3SS being the key factor of pathogenicity 12 Typically Xanthomonas T3SS injects a cocktail of 20 30 effector proteins that interfere with plant immune system and various host cellular processes Many of the effectors are presumably redundant as individual deletions of effector genes does not impair virulence however mutations in T3SS apparatus has strong effect Secretion of the effectors is coordinated with expression of other virulence factors via shared regulatory networks 12 The effector repertoire has been proposed to be a determinant of host specificity 18 Xanthomonas actively kill other bacterial using type IV secretion system and defend itself from amoeba using type VI secretion system 19 20 1 To prevent infections limiting the introduction of the bacteria is key Some resistant cultivars of certain plant species are available as this may be the most economical means for controlling this disease For chemical control preventative applications are best to reduce the potential for bacterial development Copper containing products offer some protection along with field grade antibiotics such as oxytetracycline which is labeled for use on some food crops in the United States Curative applications of chemical pesticides may slow or reduce the spread of the bacterium but will not cure already diseased plants 21 It is important to consult chemical pesticide labels when attempting to control bacterial diseases as different Xanthomonas species can have different responses to these applications Over reliance on chemical control methods can also result in the selection of resistant isolates so these applications should be considered a last resort Potential use of bacteriophages is also considered however major limiting factors are their sensitivity to environmental conditions and in particular to UV radiation Plant beneficial microorganisms or attenuated strains of Xanthomonas are being tested as a biocontrol reasoning that they could compete by occupying the same niche and even eradicate pathogenic strain Generation of plant species resistant to Xanthomonas is another potential strategy 1 Industrial use EditXanthomonas species produce an edible polysaccharide called xanthan gum that has a wide range of industrial uses including foods petroleum products and cosmetics Xanthan also plays role in the disease cycle of Xanthomonas 1 In particular xanthan gum is one of the main components of biofilm matrix Biofilms help these bacteria sustain abiotic stresses on the leaf surface Genes for Xanthan gum biosynthesis comprise the gum operon gumB gymM coding for 12 enzymes 1 Xanthan production by Xanthomonas spp that thrive in vascular plant systems might block the water flow of the plant and as a result cause wilting 12 Xanthomonas resources EditIsolates of most species of Xanthomonas are available from the National Collection of Plant Pathogenic Bacteria in the United Kingdom and other international culture collections such as ICMP in New Zealand CFBP in France and VKM in Russia It also can be taken out from MTCC India Multiple genomes ofXanthomonas have been sequenced and additional data sets tools are available at The Xanthomonas Resource 22 References Edit a b c d e f g h i j k l An SQ Potnis N Dow M Vorholter FJ He YQ Becker A et al October 2019 Mechanistic insights into host adaptation virulence and epidemiology of the phytopathogen Xanthomonas FEMS Microbiology Reviews 44 1 1 32 doi 10 1093 femsre fuz024 PMC 8042644 PMID 31578554 Doidge EM 1921 A tomato canker Annals of Applied Biology 7 4 407 30 doi 10 1111 j 1744 7348 1921 tb05528 x Dowson WJ 1939 On the systematic position and generic names of the Gram negative bacterial plant pathogens Zentralblatt fur Bakteriologie Parasitenkunde Infektionskrankheiten und Hygiene 177 193 Young JM Dye DW Bradbury JF Panagopoulos CG Robbs CF 1978 A proposed nomenclature and classification for plant pathogenic bacteria New Zealand Journal of Agricultural Research 21 1 153 177 doi 10 1080 00288233 1978 10427397 ISSN 0028 8233 Stall RE Beaulieu C Egel DS 1994 Two genetically diverse groups of strains are included in Xanthomonas campestris pv vesicatoria Int J Syst Bacteriol 44 47 53 doi 10 1099 00207713 44 1 47 Vauterin L Swings J Kersters K Gillis M Mew TW Schroth MN et al 1990 Towards an improved taxonomy of Xanthomonas Int J Syst Bacteriol 40 3 312 316 doi 10 1099 00207713 40 3 312 Rademaker JL Louws FJ Schultz MH Rossbach U Vauterin L Swings J de Bruijn FJ September 2005 A comprehensive species to strain taxonomic framework for xanthomonas Phytopathology 95 9 1098 111 doi 10 1094 phyto 95 1098 PMID 18943308 Vauterin L Hoste B Kersters K Swings J 1995 Reclassification of Xanthomonas Int J Syst Evol Microbiol 45 3 472 489 doi 10 1099 00207713 45 3 472 Ah You N Gagnevin L Grimont PA Brisse S Nesme X Chiroleu F et al February 2009 Polyphasic characterization of xanthomonads pathogenic to members of the Anacardiaceae and their relatedness to species of Xanthomonas International Journal of Systematic and Evolutionary Microbiology 59 Pt 2 306 18 doi 10 1099 ijs 0 65453 0 PMID 19196770 Young JM Wilkie JP Park DS Watson DR 2010 New Zealand strains of plant pathogenic bacteria classified by multi locus sequence analysis proposal of Xanthomonas dyei sp nov Plant Pathol 59 2 270 281 doi 10 1111 j 1365 3059 2009 02210 x a b Rodriguez R LM Grajales A Arrieta Ortiz ML Salazar C Restrepo S Bernal A March 2012 Genomes based phylogeny of the genus Xanthomonas BMC Microbiology 12 43 doi 10 1186 1471 2180 12 43 PMC 3359215 PMID 22443110 a b c d Buttner D Bonas U March 2010 Regulation and secretion of Xanthomonas virulence factors FEMS Microbiology Reviews 34 2 107 33 doi 10 1111 j 1574 6976 2009 00192 x PMID 19925633 Studholme David J Wicker Emmanuel Abrare Sadik Muzemil Aspin Andrew Bogdanove Adam Broders Kirk Dubrow Zoe Grant Murray Jones Jeffrey B Karamura Georgina Lang Jillian Leach Jan Mahuku George Nakato Gloria Valentine Coutinho Teresa Smith Julian Bull Carolee T 2020 Transfer of Xanthomonas campestris pv arecae and X campestris pv musacearum to X vasicola Vauterin as X vasicola pv arecae comb nov and X vasicola pv musacearum comb nov and Description of X vasicola pv vasculorum pv nov Phytopathology American Phytopathological Society 110 6 1153 1160 doi 10 1094 phyto 03 19 0098 le ISSN 0031 949X PMID 31922946 a b c Schaad NW Jones JB Chun W 2001 Laboratory Guide for Identification of Plant Pathogenic Bacteria 3rd Ed 175 199 a href Template Cite journal html title Template Cite journal cite journal a Cite journal requires journal help Boch J Bonas U September 2010 Xanthomonas AvrBs3 family type III effectors discovery and function Annual Review of Phytopathology 48 419 36 doi 10 1146 annurev phyto 080508 081936 PMID 19400638 Ritchie DF 2000 Bacterial spot of pepper and tomato The Plant Health Instructor doi 10 1094 PHI I 2000 1027 01 Mew TW Alvarez AM Leach JE Swings J 1993 Focus on bacterial blight of rice Plant Disease 77 5 13 doi 10 1094 pd 77 0005 Hajri A Brin C Hunault G Lardeux F Lemaire C Manceau C et al August 2009 Yang CH ed A repertoire for repertoire hypothesis repertoires of type three effectors are candidate determinants of host specificity in Xanthomonas PLOS ONE 4 8 e6632 Bibcode 2009PLoSO 4 6632H doi 10 1371 journal pone 0006632 PMC 2722093 PMID 19680562 Souza DP Oka GU Alvarez Martinez CE Bisson Filho AW Dunger G Hobeika L et al March 2015 Bacterial killing via a type IV secretion system Nature Communications 6 1 6453 Bibcode 2015NatCo 6 6453S doi 10 1038 ncomms7453 PMID 25743609 Bayer Santos E Lima LD Ceseti LM Ratagami CY de Santana ES da Silva AM et al April 2018 Xanthomonas citri T6SS mediates resistance to Dictyostelium predation and is regulated by an ECF s factor and cognate Ser Thr kinase Environmental Microbiology 20 4 1562 1575 doi 10 1111 1462 2920 14085 PMID 29488354 S2CID 3579518 Ellis SD Boehm MJ Coplin D 2008 Bacterial Diseases of Plants Ohio State University Fact Sheet Koebnik R 7 August 2012 The Xanthomonas Resource Retrieved from https en wikipedia org w index php title Xanthomonas amp oldid 1170972520, wikipedia, wiki, book, books, library,

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