Regulation of gene expression in entomopathogenic fungi in three different environmental conditions: A review

  • E Barranco-Florido
  • LA García-Hernández
  • S Rodríguez-Navarro
  • A Flores-Macías
  • MA Ramos-López

Abstract

The entomopathogenic fungi are subject to regulation system known as signal transduction that regulates the expression of the different genes required for each life stage, first comprising cuticle adhesion and degradation, later the survival in the hemolymph, and finally the fungal growth in soils. There are two signal-transduction mechanisms identified in the entomopathogenic fungi: mitogen-activated protein kinases (MAPK) and protein kinase A (PKA) dependent to cAMP pathway together with regulatory G protein signaling; both pathways participate in activation of genes linked to virulence for certain environments and hosts such as adhesion, formation of appressorium and penetration pegs, synthesis of cuticle-degrading enzymes, survival in hemolymph to evade insect immune responses, and osmolarity changes. Also, activating well-defined gene sets involved in entomopathogenic fungal survival on non-insect substrates as saprophytes or root colonizer utilized the nutrients present in root exudates, facilitating entomopathogenic fungi to act as endophytes.

Keywords: Entomopathogenic fungi, signal transduction, mitogen-activated protein kinases (MAPK), protein kinase A (PKA)

African Journal of Biotechnology Vol. 12(10), pp. 989-995, 6 March, 2013

Author Biographies

E Barranco-Florido
Departamento de Sistemas Biológicos, Universidad Autónoma Metropolitana - Xochimilco
LA García-Hernández
Departamento de Producción Agrícola y Animal, Universidad Autónoma Metropolitana unidad Xochimilco, Calzada del Hueso 1100, Col. Villa Quietud, C.P. 04960, México
S Rodríguez-Navarro
Departamento de Producción Agrícola y Animal, Universidad Autónoma Metropolitana unidad Xochimilco, Calzada del Hueso 1100, Col. Villa Quietud, C.P. 04960, México
A Flores-Macías
Departamento de Producción Agrícola y Animal, Universidad Autónoma Metropolitana unidad Xochimilco, Calzada del Hueso 1100, Col. Villa Quietud, C.P. 04960, México
MA Ramos-López
Facultad de Química, Universidad Autónoma de Querétaro, Cerro de las Campanas s/n, Col. Las Campanas, C.P. 76010, Santiago de Querétaro, Qro. México
Published
2016-01-05
Section
Articles

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eISSN: 1684-5315