Phytomelatonin: An Emerging Regulator of Plant Biotic Stress Resistance.
Trends Plant Sci
; 26(1): 70-82, 2021 01.
Article
en En
| MEDLINE
| ID: mdl-32896490
ABSTRACT
Melatonin has diverse functions in plant development and stress tolerance, with recent evidence showing a beneficial role in plant biotic stress tolerance. It has been hypothesized that pathogenic invasion causes the immediate generation of melatonin, reactive oxygen species (ROS), and reactive nitrogen species (RNS), with these being mutually dependent, forming the integrative melatonin-ROS-RNS feedforward loop. Here we discuss how the loop, possibly located in the mitochondria and chloroplasts, maximizes disease resistance in the early pathogen ingress stage, providing on-site protection. We also review how melatonin interacts with phytohormone signaling pathways to mediate defense responses and discuss the evolutionary context from the beginnings of the melatonin receptor-mitogen-activated protein kinase (MAPK) cascade in unicellular green algae, followed by the occurrence of phytohormone pathways in land plants.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Estrés Fisiológico
/
Melatonina
Límite:
Humans
Idioma:
En
Revista:
Trends Plant Sci
Asunto de la revista:
BOTANICA
Año:
2021
Tipo del documento:
Article