Phosphoinositide-specific phospholipase C signalling mediates expression of two phenylalanine ammonia lyase genes induced by salicylic acid in Capsicum chinense cells

  • Beatriz A. Rodas-JuncoEmail author
  • Víctor González-Mendoza
  • Armando Muñoz-Sánchez
  • Wilbert Poot-Poot
  • Felipe Vázquez-Flota
  • S. M. Teresa Hernández-Sotomayor
Short Communication


The role of salicylic acid (SA) in the plant stress response is mediated by phenylalanine ammonia lyase (PAL), a key enzyme in the phenylpropanoid pathway in Capsicum chinense cells. However, the relationship between PAL expression in response to SA and the precise involvement of the phosphoinositide-phospholipase C (PI-PLC) transduction pathway linking these effects remains unclear. A pharmacological approach was used to investigate the role of the PI-PLC pathway in the transcriptional regulation of two different PAL gene members in C. chinense suspension cells exposed to SA. Two putative C. chinense PAL genes (CchPAL1 and CchPAL5) were identified after clustering as an independent group in a phylogenetic tree built with 67 Solanaceae genes, corresponding to six species. The expression of CchPAL1 and CchPAL5 showed differential patterns in C. chinense cells exposed to salicylic acid. Moreover, PLC inhibitors, such as neomycin and U73122, differentially modified the expression profiles. These findings suggest that the PI-PLC pathway participates in the activation of preferred PAL genes in response to SA in Capsicum cells.


Capsicum Phenylalanine ammonia lyase Phospholipase C Salicylic acid 





Inositol 1,4,5-trisphosphate




Phosphatidylinositol 4-phosphate


Phosphatidylinositol 4,5-bisphosphate


Phosphoinositide-phospholipase C


Phenylalanine ammonia lyase


Salicylic acid



BAR-J holds a chair from the National Council for Science and Technology (CONACYT, Mexico). Supported by CONACYT: Grant (219893) to SMTH-S and a postdoctoral fellowship to VMGM (166897). Part of this work was conducted by SMTH-S in Centre for Research and Assistance in Technology and Design of the State of Jalisco (CIATEJ) during a sabbatical leave.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© Society for Plant Biochemistry and Biotechnology 2019

Authors and Affiliations

  • Beatriz A. Rodas-Junco
    • 1
    • 2
    Email author
  • Víctor González-Mendoza
    • 1
  • Armando Muñoz-Sánchez
    • 1
  • Wilbert Poot-Poot
    • 3
  • Felipe Vázquez-Flota
    • 1
  • S. M. Teresa Hernández-Sotomayor
    • 1
  1. 1.Unidad de Bioquímica y Biología Molecular de PlantasCentro de Investigación Científica de Yucatán (CICY)MéridaMexico
  2. 2.CONACYT– Facultad de Ingeniería Química, Campus de Ciencias Exactas e IngenieríasUniversidad Autónoma de YucatánMéridaMexico
  3. 3.Laboratorio de Biotecnología, Facultad de Ingeniería y CienciasUniversidad Autónoma de Tamaulipas, Centro Universitario VictoriaCiudad VictoriaMexico

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