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Trichoderma Species: Versatile Plant Symbionts.

Paulina Guzmán-Guzmán1, María Daniela Porras-Troncoso1, Vianey Olmedo-Monfil1

  • 1First and third authors: Departamento de Biología, DCNyE Campus Guanajuato, Universidad de Guanajuato, Noria Alta s/n. CP 36050, Guanajuato, Gto., México; and second and fourth authors: Laboratorio Nacional de Genómica para la Biodiversidad-Unidad de Genómica Avanzada, Cinvestav. Km 9.6 Libramiento Norte Carretera Irapuato-León, CP 36824, Irapuato, Gto., México.

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Trichoderma fungi enhance plant growth and stress resistance by secreting beneficial compounds. Genome analysis reveals their potential to produce plant hormones, further boosting plant health and agricultural sustainability.

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Area of Science:

  • Agricultural Science
  • Microbiology
  • Plant Pathology

Background:

  • Growing global population necessitates sustainable agriculture, facing challenges from environmental stressors and pathogens.
  • Agrochemical overuse causes pollution; biological solutions are sought to improve crop yield and resilience.
  • Trichoderma fungi are established biocontrol agents, known for mycoparasitism and promoting plant health.

Purpose of the Study:

  • To review recent advances in Trichoderma's mechanisms as a biocontrol agent and plant growth promoter.
  • To explore the less-understood role of phytohormone production by Trichoderma in plant symbiosis.
  • To identify genes involved in phytohormone biosynthesis and signaling in Trichoderma.

Main Methods:

  • Literature review of Trichoderma's known beneficial mechanisms.
  • Genome mining to identify genes related to phytohormone production and signaling pathways.
  • Analysis of potential implications for fungal physiology and plant-fungal interactions.

Main Results:

  • Trichoderma utilizes effector molecules and secondary metabolites for plant interaction and stress tolerance.
  • Genome analysis identified gene clusters potentially encoding proteins for auxin, cytokinin, and gibberellin biosynthesis.
  • Evidence suggests Trichoderma actively produces phytohormones, contributing to its symbiotic success.

Conclusions:

  • Trichoderma's beneficial effects are mediated by secreted compounds and potentially phytohormone production.
  • Phytohormone synthesis and signaling capabilities represent a significant, underexplored aspect of Trichoderma's plant symbiosis.
  • Understanding these mechanisms can optimize Trichoderma-based strategies for sustainable agriculture.