Presence of <i>Pseudomonas syringae</i> pv <i>actinidiae</i> the causal agent of bacterial canker of kiwifruit on symptomatic and asymptomatic tissues of kiwifruit


  • J.L. Vanneste
  • J. Yu
  • D.A. Cornish
  • S. Max
  • G. Clark



Pseudomonas syringae pv actinidiae (Psa) the causal agent of bacterial canker of kiwifruit has recently been found in New Zealand This pathogen has been the object of few studies and little is known about its epidemiology Yet the development of an effective strategy of control requires an understanding of the life cycle of the pathogen in particular determining the location of the bacteria in tissues In this study the presence of Psa on flowers symptomatic and asymptomatic leaves and different parts of canes showing symptoms was determined by polymerase chain reaction (PCR) or by direct bacterial isolation Psa was found associated with angular necrotic leaf spots with white exudate and in canes In canes Psa seemed to be either in the parenchyma leading to production of exudate or in the vascular system leading to wilting Psa was also found on asymptomatic tissues where it was probably surviving as an epiphyte




How to Cite

Vanneste, J.L., J. Yu, D.A. Cornish, S. Max, and G. Clark. “Presence of &lt;i&gt;Pseudomonas syringae&lt;/i&gt; Pv &lt;i&gt;actinidiae&lt;/i&gt; The Causal Agent of Bacterial Canker of Kiwifruit on Symptomatic and Asymptomatic Tissues of Kiwifruit”. New Zealand Plant Protection 64 (January 8, 2011): 241–245. Accessed December 6, 2021.




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