Reclassification of Xanthomonas campestris pv. citri (ex Hasse 1915) Dye 1978 forms A, B/C/D, and E as X. smithii subsp. citri (ex Hasse) sp. nov. nom. rev. comb. nov., X. fuscans subsp. aurantifolii (ex Gabriel 1989) sp. nov. nom. rev. comb. nov., and X. alfalfae subsp. citrumelo (ex Riker and Jones) Gabriel et al., 1989 sp. nov. nom. rev. comb. nov.; X. campestris pv malvacearum (ex Smith 1901) Dye 1978 as X. smithii subsp. smithii nov. comb. nov. nom. nov.; X. campestris pv. alfalfae (ex Riker and Jones

Schaad, N. W.; Postnikova, Elena; Lacy, George H.; Sechler, A.; Agarkova, Irina V.; Stromberg, Paul E.; Stromberg, Verlyn K.; Vidaver, Anne K.

doi:10.1016/j.syapm.2005.03.017

Cited by 126 publications

(72 citation statements)

References 48 publications

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“…All samples were adjusted to 200 ng/ml and stored at À20 1C. The DNA/DNA reassociation assays were carried out using the S1 nuclease protocol [22], as described previously [43,44]. The probe and target DNA were reassociated at 711C for 23 h in the presence of 22.7% formamide.…”

Section: Source Of Strains and Confirmation Of Identitymentioning

confidence: 99%

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Reclassification of subspecies of Acidovorax avenae as A. Avenae (Manns 1905) emend., A. cattleyae (Pavarino, 1911) comb. nov., A. citrulli Schaad et al., 1978) comb. nov., and proposal of A. oryzae sp. nov.

Schaad

Postnikova

Sechler

et al. 2008

Systematic and Applied Microbiology

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154

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Section: Source Of Strains and Confirmation Of Identitymentioning

confidence: 99%

“…The AFLP procedure was carried out as described previously [44]. Briefly, an AFLP template was prepared for PCR using a combination of MseI and EcoRI restriction endonucleases.…”

Section: Aflpmentioning

confidence: 99%

Reclassification of subspecies of Acidovorax avenae as A. Avenae (Manns 1905) emend., A. cattleyae (Pavarino, 1911) comb. nov., A. citrulli Schaad et al., 1978) comb. nov., and proposal of A. oryzae sp. nov.

Schaad

Postnikova

Sechler

et al. 2008

Systematic and Applied Microbiology

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154

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“…phaseoli. Schaad et al (2005Schaad et al ( , 2006 proposed Xanthomonas fuscans subsp. fuscans for the fuscous blight pathogen.…”

Section: Palavras-chavementioning

confidence: 99%

Xanthomonas fuscans subsp. fuscans causing wilt symptoms in bean plants (Phaseolus vulgaris) in Brazil

2015

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Common and fuscous blights of bean are diseases widely distributed in the world. The most commonly observed symptoms are spots on leaves, stems, pods and seeds. In December 2009, bean plants cv. Uirapuru showing symptoms of wilt similar to those induced by Curtobacterium flaccumfaciens pv. flaccumfaciens were observed in a commercial crop located in the county of Itararé, State of São Paulo, Brazil. The plants were at the last cycle stage with mature pods and these symptoms were noted in the majority of the growing area. Optical microscopic observations of discolored vascular tissue from diseased stems revealed the presence of bacterial masses oozed from infected tissue, indicating that the disease was caused by bacterial pathogen. Isolations on nutrient agar showed circular, convex, yellow colonies with smooth edges. The causal bacterium was Gramnegative and produced a dark brown pigment in culture medium. Biochemical, cultural and physiological tests confirmed its identity as Xanthomonas fuscans subsp. fuscans(syn. Xanthomonas campestris pv. phaseoli“var. fuscans"). The pathogenicity of the isolates was confirmed by artificial inoculations. Systemic infection has been reported in the literature but these kinds of symptoms are not currently observed in Brazilian fields. Bacterial strains were deposited on the Phytobacteria Culture Collection of Instituto Biológico (IBSBF - www.biologico.sp.gov.br/bacterias/php) under accession numbers 2813 and 3028.

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“…citri pathotype A (Xac = Xanthomonas axonopodis pv. citri) [1], which is responsible for the so-called Asiatic or type A Canker. The disease symptoms evolve as initial water soaking followed by hyperplasia and necrosis at the site of infection, lead to the dispersion of the pathogen to other infection sites across plant host tissues [2].…”

Section: Introductionmentioning

confidence: 99%

Identification of New Genes Related to Virulence of <i>Xanthomonas axonopodis</i> Pv. <i>Citri</i> during Citrus Host Interactions

Ferreira¹,

Moreira²,

Brigati³

et al. 2017

AiM

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A mutant library of the bacterium Xanthomonas citri subsp. citri strain 306 pathotype A (Xac), the causative agent of most aggressive Asiatic type A citrus canker, was screened regarding altered canker symptoms after inoculations into Citrus sinensis and Citrus limonia host leaves. Twenty-six mutants have shown phenotypic virulence changes and have respectively knocked out gene identified by sequencing. In vivo growth curves were obtained for nine mutants to quantify how the mutations could affect pathogen's adaptability to growth inside and attack host plant infected tissue. Among identified genes in mutated strains, we could find those that until now had not been reported as being involved in Xac adaptation and/or virulence, such as predicted to encode for xylose repressor-like protein (XAC∆xylR), Fe-S oxidoredutase (XAC∆aslB), helicase IV (XAC∆helD), ubiquinol cytochrome c oxidoreductase iron-sulfur subunit (XAC∆petA), chromosome partitioning protein (XAC∆parB) and cell division protein FtsB (XAC∆ftsB), in addition to genes predicted to encode for hypothetical proteins. The new genes found in this study as being relevant to adaptation and virulence, improve the understanding of Xac fitness during citrus plant attack and canker symptoms development.

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Cited by 126 publications

References 48 publications

Reclassification of subspecies of Acidovorax avenae as A. Avenae (Manns 1905) emend., A. cattleyae (Pavarino, 1911) comb. nov., A. citrulli Schaad et al., 1978) comb. nov., and proposal of A. oryzae sp. nov.

Reclassification of subspecies of Acidovorax avenae as A. Avenae (Manns 1905) emend., A. cattleyae (Pavarino, 1911) comb. nov., A. citrulli Schaad et al., 1978) comb. nov., and proposal of A. oryzae sp. nov.

Xanthomonas fuscans subsp. fuscans causing wilt symptoms in bean plants (Phaseolus vulgaris) in Brazil

Identification of New Genes Related to Virulence of <i>Xanthomonas axonopodis</i> Pv. <i>Citri</i> during Citrus Host Interactions

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Cited by 126 publications

References 48 publications

Reclassification of subspecies of Acidovorax avenae as A. Avenae (Manns 1905) emend., A. cattleyae (Pavarino, 1911) comb. nov., A. citrulli Schaad et al., 1978) comb. nov., and proposal of A. oryzae sp. nov.

Reclassification of subspecies of Acidovorax avenae as A. Avenae (Manns 1905) emend., A. cattleyae (Pavarino, 1911) comb. nov., A. citrulli Schaad et al., 1978) comb. nov., and proposal of A. oryzae sp. nov.

Xanthomonas fuscans subsp. fuscans causing wilt symptoms in bean plants (Phaseolus vulgaris) in Brazil

Identification of New Genes Related to Virulence of &lt;i&gt;Xanthomonas axonopodis&lt;/i&gt; Pv. &lt;i&gt;Citri&lt;/i&gt; during Citrus Host Interactions

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Identification of New Genes Related to Virulence of <i>Xanthomonas axonopodis</i> Pv. <i>Citri</i> during Citrus Host Interactions