Comparative proteomics of two citrus varieties in response to infection by the fungus Alternaria alternata

Alternaria brown spot is a disease caused by the necrotrophic fungus Alternaria alternata, which induces necrotic lesions on fruits and young leaves due to the production of the host-specific ACT toxin by the fungus

Milena Santos Dória; Meg Silva Guedes; Edson Mario de Andrade Silva; Tahise Magalhães de Oliveira; Carlos Priminho Pirovani; Katia Cristina Kupper; Marinês Bastianel; Fabienne Micheli

2019

Scholarcy highlights

  • Alternaria brown spot is a disease caused by the necrotrophic fungus Alternaria alternata, which induces necrotic lesions on fruits and young leaves due to the production of the host-specific ACT toxin by the fungus
  • To better understand the citrus–A. alternata interaction and to identify putative resistance proteins, as well as the receptor of the ACT toxin, citrus plants susceptible and resistant to A. alternata, infected or not with the pathogen were analyzed by proteomics
  • Protein changes were observed between citrus genotypes after infection, and 150 candidate proteins were obtained
  • Susceptible plants presented a high level of proteins involved in stress response at the final stages of the infection, whereas resistant plants presented high level of ROS proteins, metabolic proteins, and proteins involved in the immune system process
  • Proteins like ferredoxin and cyclophilin are specific to the susceptible variety and may be good candidates as fungal effector-interacting proteins. This is the first citrus–A. alternata proteomics analysis, which has allowed a better understanding of the molecular bases of the citrus response to ABS disease
  • This is the first citrus–A. alternata proteomics analysis, which has allowed a better understanding of the molecular bases of the citrus response to Alternaria brown spot disease

Need more features? Save interactive summary cards to your Scholarcy Library.