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Pantoea ananatis: an unconventional plant pathogen.

Teresa A Coutinho1, Stephanus N Venter

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Area of Science:

  • Microbiology
  • Plant Pathology
  • Bacteriology

Background:

  • Pantoea ananatis is an emerging plant pathogen causing significant agricultural losses worldwide.
  • It infects a broad range of crops and forest species, with increasing reports on new hosts.
  • Unconventionally, P. ananatis also infects humans and exists in diverse environments, including aviation fuel tanks.

Purpose of the Study:

  • To summarize the diverse roles and characteristics of Pantoea ananatis.
  • To highlight its significance as an emerging plant pathogen.
  • To explore its unconventional ecological niches and potential applications.

Main Methods:

  • Literature review of Pantoea ananatis.
  • Analysis of its taxonomic classification (Gammaproteobacteria, Enterobacteriaceae).
  • Description of its microbiological properties (Gram-negative, facultative anaerobe, motile, yellow pigment, indole positive).

Main Results:

  • Pantoea ananatis causes varied symptoms like leaf spots, die-back, and rots in monocots and dicots.
  • It acts as a common epiphyte and endophyte, with or without causing disease.
  • Some strains exhibit ice-nucleating properties, useful in biological control and the food industry.
  • The bacterium possesses antifungal and antibacterial properties, indicating potential for biological control.

Conclusions:

  • Pantoea ananatis is a versatile bacterium with significant implications in agriculture and beyond.
  • Its ability to cause disease, inhabit diverse niches, and possess biocontrol properties warrants further investigation.
  • Understanding P. ananatis is crucial for managing crop diseases and exploring novel biotechnological applications.