1. Phospholipid signaling pathway in Capsicum chinense suspension cells as a key response to consortium infection.
- Author
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Sánchez-Sandoval ME, Racagni Di-Palma GE, González-Mendoza VM, Cab-Guillén YA, Muñoz-Sanchez JA, Ramos-Díaz A, and Hernández-Sotomayor SMT
- Subjects
- Capsicum genetics, Capsicum microbiology, Colletotrichum isolation & purification, Diacylglycerol Kinase, Diphosphates metabolism, Glycerol analogs & derivatives, Glycerol metabolism, Host-Pathogen Interactions, Phosphatidic Acids metabolism, Phylogeny, Plant Diseases microbiology, Plant Roots genetics, Plant Roots immunology, Plant Roots microbiology, Seedlings genetics, Seedlings immunology, Seedlings microbiology, Type C Phospholipases metabolism, Capsicum immunology, Colletotrichum physiology, Microbial Consortia physiology, Phospholipids metabolism, Plant Diseases immunology, Plant Immunity, Signal Transduction
- Abstract
Background: Mexico is considered the diversification center for chili species, but these crops are susceptible to infection by pathogens such as Colletotrichum spp., which causes anthracnose disease and postharvest decay in general. Studies have been carried out with isolated strains of Colletotrichum in Capsicum plants; however, under growing conditions, microorganisms generally interact with others, resulting in an increase or decrease of their ability to infect the roots of C. chinense seedlings and thus, cause disease., Results: Morphological changes were evident 24 h after inoculation (hai) with the microbial consortium, which consisted primarily of C. ignotum. High levels of diacylglycerol pyrophosphate (DGPP) and phosphatidic acid (PA) were found around 6 hai. These metabolic changes could be correlated with high transcription levels of diacylglycerol-kinase (CchDGK1 and CchDG31) at 3, 6 and 12 hai and also to pathogen gene markers, such as CchPR1 and CchPR5., Conclusions: Our data constitute the first evidence for the phospholipids signalling events, specifically DGPP and PA participation in the phospholipase C/DGK (PI-PLC/DGK) pathway, in the response of Capsicum to the consortium, offering new insights on chilis' defense responses to damping-off diseases.
- Published
- 2021
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