World Academy of Sciences (TWAS), grant number 03-120 RG/BIO/
LA. E.S.C. was supported by a scholarship from the Universidade
Cato
´
lica de Brası
´
lia and CNPq.
References
Alfano JR, Collmer A (1996) Bacterial pathogens in plants: life up
against the wall. Plant Cell 8:1683–1698
Bouzar H, Jones JB, Stall RE, Hodge NC, Minsavage GV, Benedict
AA, Alvarez AM (1994) Physiological, chemical, serological, and
pathogenic analyses of a worldwide collection of Xanthomonas
campestris pv. vesicatoria strains. Phytopathol 84:663–671
Bouzar H, Jones JB, Stall RE, Louws FJ, Schneider JL, de Bruijn FJ,
Jackson LE (1999) Multiphasic analysis of xanthomonads
causing bacterial spot disease on tomato and pepper in the
Caribbean and Central America: evidence for common lineages
within and between countries. Phytopathol 89:328–335
Bradford M (1976) A rapid and sensitive method for the quantitation
of microgram quantities of protein utilizing the principle of
protein-dye binding. Anal Biochem 72:248–254
Bruce RJ, West CA (1982) Elicitation of casbene synthetase activity
in castor bean, the role of pectic fragments of the plant cell wall
in elicitation by fungal endo-polygalacturonase. Plant Physiol
69:1181–1188
Cardoso OAV, Filho EXF (2003) Purification and characterization of
a novel cellulase-free xylanase from Acrophialophora nainiana.
FEMS Microbiol Lett 223:309–314
Cuppels DA, Louws FJ, Ainsworth T (2006) Development and
evaluation of PCR-based diagnostic assays for the bacterial speck
and bacterial spot pathogens of tomato. Plant Dis 90:451–458
da Silva AC, Ferro JA, Reinach FC et al (2002) Comparison of the
genomes of two Xanthomonas pathogens with differing host
specificities. Nature 417:459–463
Dye DW (1966) Cultural and biochemical reaction of additional
Xanthomonas species. NZJ Sci 9:913–919
Filho EX, Puls J, Coughlan MP (1996) Purification and characteriza-
tion of two arabinofuranosidases from solid-state cultures of the
fungus Penicillium capsulatum. Appl Environ Microbiol
62:168–173
Glazebrook J (2005) Contrasting mechanisms of defense against
biotrophic and necrotrophic pathogens. Annu Rev Phytopathol
43:205–227
Gonzalez ET, Allen C (2003) Characterization of a Ralstonia
solanacearum operon required for polygalacturonate degradation
and uptake of galacturonic acid. Mol Plant Microbe Interact
16:536–544
Hahn MG, Darvill AG, Albersheim P (1981) Host–pathogen inter-
actions: XIX. The endogenous elicitor, a fragment of a plant cell
wall polysaccharide that elicits phytoalexin accumulation in
soybeans. Plant Physiol 68:1161–1169
Hildebrand DC, Palleroni NJ, Schroth MN (1990) Deoxyribonucleic
acid relatedness of 24 xanthomonad strains representing 23
Xanthomonas campestris pathovars and Xanthomonas fragariae.
J App Bacteriol 68:263–269
Jones JB, Lacy GH, Bouzar H, Stall RE, Schaad NW (2004a)
Reclassification of the xanthomonads associated with bacterial
spot disease of tomato and pepper. Syst Appl Microbiol
27:755–762
Jones AM, Thomas V, Truman B, Lilley K, Mansfield J, Grant M
(2004b) Specific changes in the Arabidopsis proteome in
response to bacterial challenge: differentiating basal and R-gene
mediated resistance. Phytochemistry 65:1805–1816
Katiyar-Agarwal S, Morgan R, Dahlbeck D, Borsani O, Villegas A,
Zhu JK, Staskawicz BJ, Jin H (2006) A pathogen-inducible
endogenous siRNA in plant immunity. Proc Natl Acad Sci
103(47):18002–18007
Kim HS, Park HJ, Heu S, Jung J (2004) Molecular and functional
characterization of a unique sucrose hydrolase from Xanthomo-
nas axonopodis pv. glycines. J Bacteriol 186:411–418
Liu H, Zhang S, Schell MA, Denny TP (2005) Pyramiding unmarked
deletions in Ralstonia solanacearum shows that secreted proteins
in addition to plant cell-wall-degrading enzymes contribute to
virulence. Mol Plant Microbe Interact 18:1296–1305
Lowe SE, Theodorou MK, Trinci AP (1987) Cellulases and xylanase
of an anaerobic rumen fungus grown on wheat straw, wheat
straw holocellulose, cellulose, and xylan. Appl Environ Micro-
biol 53:1216–1223
Miller GL (1959) Use of dinitrosalicyclic acid reagent for determi-
nation of reducing sugar. Anal Chem 31:426–428
Quezado-Duval AM, Leite RP, Truffi D, Camargo LEA (2004)
Outbreaks of bacterial spot caused by Xanthomonas gardneri on
processing tomato in central-west Brazil. Plant Dis 88:157–161
Quirino BF, Bent AF (2003) Deciphering host resistance and
pathogen virulence: the Arabidopsis/Pseudomonas interaction
as a model. Mol Plant Pathol 4:517–530
Quirino BF, Genger R., Ham JH, Zabala G, Bent A (2004)
Identification and functional analysis of Arabidopsis proteins
that interact with resistance gene product RPS2 in yeast. Physiol
Mol Plant Pathol 65:257–267
Rajeshwari R, Jha G, Sonti RV (2005) Role of an in planta-expressed
xylanase of Xanthomonas oryzae pv. oryzae in promoting
virulence on rice. Mol Plant Microbe Interact 18:830–837
Sato M, Mitra RM, Coller J, Wang D, Spivey NW, Dewdney J,
Denoux C, Glazebrook J, Katagiri F (2007) A high-performance,
small-scale microarray for expression profiling of many samples
in Arabidopsis-pathogen studies. Plant J 49(3):565–577
Schaad NW, Jones JB, Chun W (eds) (2001) Laboratory guide for
identification of plant pathogenic bacteria. APS Press, St. Paul,
Minnesota
Schaad NW, Vidaver AK, Lacy GH, Rudolph K, Jones JB (2000)
Evaluation of proposed amended names of several pseudomo-
nads and xanthomonads and recommendations. Phytopathology
87:807–813
Simpson RB, Johnson LJ (1990) Arabidopsis thaliana as a host for
Xanthomonas campestris pv. campestris. Mol Plant Microbe
Interact 3:233–237
Soriano M, Diaz P, Pastor FIJ (2005) Pectinolytic systems of two
aerobic sporogenous bacterial strains with high activity on
pectin. Curr Microbiol 50:114–118
Starr MP, Stephens WL (1964) Pigmentation and taxonomy of the
genus Xanthomonas. J Bacteriol 87:293–302
S
ˇ
utic D (1957) Tomato bacteriosis. Rev Appl Mycol 36:734–735
Thaler JS, Owen B, Higgins VJ (2004) The role of the jasmonate
response in plant susceptibility to diverse pathogens with a range
of lifestyles. Plant Physiol 135:530–538
Toth IK, Bell KS, Holeva MC, Birch PRJ (2003) Soft rot Erwiniae:
from genes to genomes. Mol Plant Pathol 4:17–30
Valette-Collet O, Cimerman A, Reignault P, Levis C, Boccara M
(2003) Disruption of Botrytis cinerea pectin methylesterase gene
Bcpme1 reduces virulence on several host plants. Mol Plant
Microbe Interact 16:360–367
Vauterin L, Hoste B, Kersters K, Swings J (1995) Reclassification of
Xanthomonas. Int J Syst Bacteriol 45:472–489
Vauterin L, Rademaker J, Swings J (2000) Synopsis on the taxonomy
of the genus Xanthomonas. Phytopathology 90:677–682
Vorwerk S, Somerville S, Somerville C (2004) The role of plant cell
wall polysaccharide composition in disease resistance. Trends
Plant Sci 9:203–209
Whalen MC, Innes RW, Bent AF, Staskawicz BJ (1991) Identification
of Pseudomonas syringae pathogens of Arabidopsis and a
World J Microbiol Biotechnol
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