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Survival of Xanthomonas campestris pv. campestris associated with soil and cauliflower crop debris under Brazilian conditions

  • T. A. F. Silva JúniorEmail author
  • J. C. Silva
  • R. M. Gonçalves
  • J. M. Soman
  • J. R. S. Passos
  • A. C. Maringoni
Article
  • 17 Downloads

Abstract

This study investigated the survival of Xanthomonas campestris pv. campestris (Xcc) in the soil, under field and controlled conditions, and associated with cauliflower crop debris. Under field conditions, the soil temperature influenced the survival of Xcc, and the bacterium survived from 4 to 7 days. Under controlled conditions, the soil type and temperature influenced Xcc survival. Depending on the texture, pH and organic matter content of the soil, the bacterium survived from 10 to 24 days. Xcc survived in the soil for 14 days at 20 °C, and for 4 days when incubated at 30 °C. The soil moisture did not influence Xcc survival of 14 days at the three moisture contents evaluated. Similar behaviour was observed regarding the survival of four Xcc strains in the soil. The longest period of Xcc survival associated with cauliflower debris was 255 days. Our results suggest that the soil is not an important source of inoculum for Xcc. Considering the survival periods of Xcc in cauliflower crop residues under the Brazilian conditions studied, we recommend crop rotation with non-host species of Xcc for 1 year. This information may also be useful for the management of black rot in other brassica-producing countries.

Keywords

Black rot Ecology, plant pathogenic bacteria Brassica crop 

Notes

Acknowledgements

The authors thank the São Paulo Research Foundation (FAPESP) for granting the post-doc scholarship to the first author (FAPESP process 2011/18527-0) and for the financial support (FAPESP process 2012/13298-5).

Compliance with ethical standards

Conflict of interest

We have no conflict of interest to declare.

Research involving human participants and/or animals

We declare that no human or animal were involved during the research.

Informed consent

Informed consent was obtained from all individual participants included in the study.

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Copyright information

© Koninklijke Nederlandse Planteziektenkundige Vereniging 2019

Authors and Affiliations

  • T. A. F. Silva Júnior
    • 1
    Email author
  • J. C. Silva
    • 1
  • R. M. Gonçalves
    • 1
  • J. M. Soman
    • 1
  • J. R. S. Passos
    • 2
  • A. C. Maringoni
    • 1
  1. 1.Departamento de Proteção Vegetal, Faculdade de Ciências Agronômicas (FCA)Universidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP)BotucatuBrazil
  2. 2.Departamento de BioestatísticaInstituto de Biociências, UNESPBotucatuBrazil

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