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Xanthomonas axonopodis pv. eucalyptorum pv. nov. Causing Bacterial Leaf Blight on Eucalypt in Brazil.
Ferraz, Hélvio Gledson Maciel; Badel, Jorge Luis; da Silva Guimarães, Lúcio Mauro; Reis, Bruna Paolinelli; Tótola, Marcos Rogério; Gonçalves, Rivadalve Coelho; Alfenas, Acelino Couto.
Afiliação
  • Ferraz HGM; Department of Phytopathology, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil.
  • Badel JL; Department of Phytopathology, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil.
  • da Silva Guimarães LM; Department of Phytopathology, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil.
  • Reis BP; Department of Phytopathology, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil.
  • Tótola MR; Department of Microbiology, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil.
  • Gonçalves RC; EMBRAPA Acre, BR 364, Km 14, Zona Rural, CEP 69.908.970, Caixa Postal 321, Rio Branco, AC, Brazil.
  • Alfenas AC; Department of Phytopathology, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil.
Plant Pathol J ; 34(4): 269-285, 2018 Aug.
Article em En | MEDLINE | ID: mdl-30140181
Bacterial leaf blight is a major disease of eucalypt, especially under nursery conditions. Different bacterial species have been associated with the disease in several countries, and despite its importance worldwide, it is not clear to date whether similar disease symptoms are caused by the same or by different etiological agents. In this study, 43 bacterial strains were isolated from blighted eucalypt leaves collected in different geographic areas of Brazil and inoculated onto a susceptible eucalypt clone. Polyphasic taxonomy, including morphological, physiological, biochemical, molecular, and pathogenicity tests showed that only certain strains of Xanthomonas axonopodis caused symptoms of the disease. Strains varied in their aggressiveness, but no correlation with geographic origin was observed. MLSA-based phylogenetic analysis using concatenated dnaK, fyuA, gyrB and rpoD gene sequences allocated the strains in a well-defined clade, corresponding to Rade-marker's group RG 9.6. Inoculation of nineteen plant species belonging to seven botanical families with representative strain LPF 602 showed it to be pathogenic only on Eucalyptus spp, and Corymbia spp. Based on distinct biochemical and pathogenic characteristics that differentiate the eucalypt strains from other pathovars of the X. axonopodis species, here we propose their allocation into the new pathovar X. axonopodis pv. eucalyptorum pv. nov.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE País/Região como assunto: America do sul / Brasil Idioma: En Revista: Plant Pathol J Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Brasil País de publicação:
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE País/Região como assunto: America do sul / Brasil Idioma: En Revista: Plant Pathol J Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Brasil País de publicação: