Rhizophagus irregularis and Rhizoctonia solani Differentially Elicit Systemic Transcriptional Expression of Polyphenol Biosynthetic Pathways Genes in Sunflower

摘要: Plant roots are exposed to penetration by different biotrophic and necrotrophic fungi. However, plant immune responses vary, depending on the root-penetrating fungus. Using qRT-PCR, changes over time in systemic transcriptional expression of polyphenol biosynthesis-related genes were investigated sunflower plants response colonization with Rhizophagus irregularis and/or infection Rhizoctonia solani. The results demonstrated that both fungi systemically induced most addressed at varying degrees. inducing effect differed according treatment type, organ, targeted gene, stage. R. was more prevalent than solani early stages. In general, dual showed a superior single treatments time. hierarchical clustering analysis cinnamate-4-hydroxylase master expressed gene along studied period. cell wall lignification main plant-defensive-mechanism induced. addition, accumulations chlorogenic acid, flavonoids, anthocyanins also triggered. Moreover, improved growth reduced disease severity. We can conclude proactive, rather curative, is great importance, owing their protective growth-promoting roles, even if no occurred.