Chidambareswaren M, PhD Student
Molecular analysis of pathogen-associated molecular patterns (PAMPs)- triggered immunity in black pepper(Piper nigrum L ).
Perception of an elicitor or a pathogen by a plant is a dynamic process with multitude roles for genes and protein. An important question pertaining to such a plant-pathogen interaction would be to delineate the roles of the genetic components involved in the plant as well as the pathogen. When it comes to plant immunity, it comprises of two layers, namely Pattern triggered immunity (PTI) and Effector-triggered immunity (ETI). During these processes, there arises a constant interaction between the host and the pathogen within the host apoplast as well as at the cell wall and cell membrane levels. Black pepper (Piper nigrum L) is a spice crop well known for its culinary and medicinal uses worldwide. Production of black pepper has significantly been affected by Phytophthora capsici, an oomycete pathogen which causes quick wilt in many crop plants. Efforts on classical breeding of cultivated black pepper have yielded little results and a systematic understanding of this pathosystem of Piper nigrum - Phytophthora capsici has not been possible owing to lack of genome or proteome information. We believe that it would be imperative to take a multi-dimensional approach of molecular, cellular, genomics and proteomics studies for understanding and designing alternative strategies for disease resistance and crop improvement in black pepper. My research question thus focuses on understanding the basic signaling signatures of PAMP vs. PRRs leading to PTI in black pepper. We have developed a proteomics and transcriptomics based library for understanding the changes involved during selective biotic stress in P. nigrum.
Scholarships :Fulbright-Nehru Doctoral Research Fellowships 2015-2016 carried out at the Center for Genome Research and Biocomputing, Oregon State University, Corvallis, OR-97331.