EdeLab & Research Explained!

This research explores the mechanism by which the FLS2 receptor, a key player in plant immunity, recognizes bacterial flagellin and triggers a defense response. The study discovered that some FLS2 homologs have expanded recognition ranges and can detect a wider variety of flagellin variants. Using structure-guided engineering, researchers were able to introduce these expanded recognition capabilities into FLS2 homologs with narrower perception ranges. They identified specific amino acid properties and AlphaFold3 metrics that contribute to FLS2-flg22 recognition, providing a framework for rationally designing receptors with enhanced pathogen restriction. Evolutionary analysis revealed positive selection on FLS2 residues involved in flagellin and co-receptor binding, supporting the hypothesis that expanded perception is an advantageous evolutionary adaptation.

Original study:

Unlocking Expanded Flagellin Perception Through Rational Receptor Engineering

Tianrun Li, Esteban Jarquin Bolaños, Danielle M. Stevens, Hanxu Sha, Daniil M. Prigozhin, Gitta Coaker: https://doi.org/10.1101/2024.09.09.612155

Canola (Brassica napus L.), a valuable oilseed crop, faces significant challenges from diseases such as clubroot and blackleg, threatening global yields. To improve disease resistance, it’s crucial to accurately annotate nucleotide-binding leucine-rich repeat receptors (NLRs), which are key components of plant immune systems. In this study we focused on refining the NLR repertoire (NLRome) of the Westar cultivar using Resistance gene enrichment sequencing (RenSeq). 

The original study can be found here:

Refinement of the Brassica napus NLRome using RenSeq

Jiaxu Wu, Soham Mukhopadhyay,  Edel Pérez-López: https://doi.org/10.1101/2024.07.24.604657 https://doi.org/10.1093/plphys/kiae631