Toxicological Research

Korean Society of Toxicology & Korea Environmental Mutagen Society (한국독성학회)
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Plant Exocytic Secretion of Toxic Compounds for Defense

  • Kwon, Chian (Department of Molecular Biology, Dankook University) ;
  • Yun, Hye Sup (Department of Biological Sciences, Konkuk University)
  • Received : 2014.05.11
  • Accepted : 2014.05.16
  • Published : 2014.06.30
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Abstract

In contrast to animals, plants do not have a circulatory system as well as mobile immune cells that allow them to protect themselves against pathogens. Instead, plants exclusively depend on the innate immune system to defend against pathogens. As typically observed in the animal innate immunity, plant immune responses are composed of pathogen detection, defense signaling which includes transcriptional reprogramming, and secretion of antimicrobial compounds. Although knowledge on recognition and subsequent signaling of pathogen-derived molecules called elicitors is now expanding, the mechanisms of how these immune molecules are excreted are yet poorly understood. Therefore, current understandings of how plants secrete defense products especially via exocytosis will be discussed in this review.

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