学术活动
学术活动

植物科学前沿系列讲座

2018-09-15

 

PSC Frontier Seminar Series

 

Title: Novel defence and defence evasion mechanisms in Pseudomonas syringae-plant interactions

Speaker: Prof. Carmen R. Beuzon, University of Malaga (Spain)

Time: 10:00 am

Day/Date: September 19th, 2018 (Wednesday)

Host PI: Prof. Alberto Macho

Venue: PSC Auditorium

 

 

Abstract: 

Pseudomonas syringae is a remarkably adaptive pathogen and an important model for the study of plant-pathogen interactions. In plants, P. syringae can be found in the surface of leaves, entering the leaf through natural openings and wounds to reach the intercellular spaces of the leaf parenchyma, the apoplast, where it replicates causing disease.

During the infection process, plants recognize the presence of the pathogen and modulate the expression of a variety of genes involved in the defense response.In this process miRNAs have recently been shown to play a fundamental role in reprogramming for a successful defense response. Different analysis of the expression profiles of mutant plants in the biogenesis of small RNAs and plants infected with P. syringae, led us to identify a series of uncharacterized "R" genes (TIR-NBS-LRR) differentially expressed in both conditions. With the use of different bioinformatic tools, we identified a miRNA* of 22 as a potential regulator of these "R" genes directly and indirectly through the generation of small phased RNAs (phased-siRNAs) from one of the target genes. Prof. Beuzon will present their most recent findings on this subject.