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Keywords:

  • Science & Technology
  • Life Sciences & Biomedicine
  • Plant Sciences
  • rhizosphere
  • Agrobacterium tumefaciens
  • confocal microscopy
  • spatiotemporal mapping
  • fluorescent biosensor
  • chemical network
  • AGROBACTERIUM-TUMEFACIENS C58C1
  • PHENOLIC-COMPOUNDS
  • HOST RECOGNITION
  • GENE-EXPRESSION
  • CROWN-GALL
  • ZEA-MAYS
  • T-DNA
  • TRANSFORMATION
  • VIRULENCE
  • CHEMOTAXIS

Mapping Reaction-Diffusion Networks at the Plant Wound Site With Pathogens

Tools:

Journal Title:

FRONTIERS IN PLANT SCIENCE

Volume:

Volume 11, Number

Publisher:

, Pages 1074-1074

Type of Work:

Article

Abstract:

The rich collection of microbes colonizing the plant root making up the rhizosphere function as a multigenomic organ for nutrient distribution. The extent to which its dynamic mutualistic cellular order depends on morphogenic signaling, while likely, remains unknown. We have shown that reaction-diffusion chemical networks constructed with model plant and bacterial metabolites can mimic processes ranging from oxidative burst kinetics to traveling waves and extracellular stationary state reaction-diffusion networks for spatiotemporal ordering of the rhizosphere. Plant parasites and pathogens can be limited by host attachment require dynamic informational networks and continue to provide insight into what controls the rhizosphere. Here we take advantage of Agrobacterium tumefaciens, a plant pathogen with a gated receptor that requires simultaneous perception of two plant metabolites. Genetic manipulations have created receptors allowing each metabolite concentration to be correlated with pathogen behavior. The development of the florescent strains used here provide initial maps of the reaction-diffusion dynamics existing in the rhizosphere, revealing significant differences in the signaling landscape of host and non-host plants before and after wounding, specifically highlighting networks that may inform rhizosphere organization.
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