Origin, Evolution and Functional Mechanisms of Plant Immune System

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Protection and Biotic Interactions".

Deadline for manuscript submissions: 30 November 2024 | Viewed by 1708

Special Issue Editors


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Guest Editor
School of Life Sciences, Nanjing University, Nanjing 210023, China
Interests: plant immunity system; plant–microbe interactions; plant immune receptor
College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
Interests: the transition of plants from aquatic to terrestrial environment; the origin and early diversification of angiosperms; plant-pathogen interactions
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Special Issue Information

Dear Colleagues,

We are delighted to announce a Special Issue of Plants dedicated to exploring the origin, evolution, functional role and regulatory mechanisms of the plant immune system.

Throughout their life cycle and evolutionary history, plants are consistently exposed to complex and evolving microbial communities. To defend against invading pathogens, plants have evolved a sophisticated two-layered immune system known as pathogen-associated molecular pattern-triggered immunity (PTI) and effector-triggered immunity (ETI). PTI relies on cell surface receptors encoded by the receptor-like kinase (RLK) family or receptor-like protein (RLP) family genes, while ETI involves the recognition of pathogen effectors by intracellular nucleotide-binding site leucine-rich repeat (NLR or NBS-LRR) family genes. Genes encoding these cell surface and intracellular immune receptors, along with a few other proteins involved in pathogen detection, collectively form plant disease resistance genes (R genes).

Over the past three decades, significant progress has been made in cloning novel R genes against diverse pathogens and understanding the mechanisms of R protein activation and signaling. Over 300 plant disease genes have been cloned from various model plants and crops, and the activation mechanisms of several representative R genes from the RLK/RLP and NLR families have been elucidated. The key signaling modules for PTI, ETI and their crosstalk have been identified, leading to successful applications and manipulations of R genes for crop disease resistance breeding. However, there is still an urgent need for the identification and artificial design of novel R genes against notorious crop pathogens. Additionally, knowledge gaps persist between model plants that are overwhelmingly from angiosperms and non-model plants from diverse lineages regarding the mechanisms of R gene function and signaling. Furthermore, the epigenetic and epitranscriptomic regulation of R genes remains poorly understood.

This Special Issue aims to bring together cutting-edge research and insights into the fascinating world of the plant immune system. We invite contributions covering a wide range of topics, including, but not limited to:

  • Genetic mapping of novel R gene loci in crops;
  • Functional characterization of immune-related genes;
  • Evolution of immune-related genes;
  • Application of omics approaches to study plant immunity;
  • Co-evolutionary dynamics between plants and pathogens;
  • Role of plant hormones and signaling pathways in immunity;
  • Engineering plant immunity for enhanced disease resistance.

We welcome original research articles, perspectives, opinions, reviews and methodological papers that contribute to our understanding of plant immune systems from diverse perspectives and methodologies. This Special Issue provides an excellent opportunity to showcase groundbreaking research and foster interdisciplinary collaborations in the field of plant biology. We invite researchers from around the world to contribute their latest findings and insights to this exciting endeavor.

Dr. Zhu-Qing Shao
Dr. Jia-Yu Xue
Guest Editors

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • plant immune system
  • plant immune receptors
  • plant disease resistance genes
  • evolutionary genetics
  • plant–pathogen interactions
  • genetic mapping
  • comparative genomics
  • plant immune signaling pathway
  • plant immune system engineering

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Published Papers (1 paper)

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Research

15 pages, 5985 KiB  
Article
Genome-Wide Identification and Evolutionary Analysis of Receptor-like Kinase Family Genes Provides Insights into Anthracnose Resistance of Dioscorea alata
by Yuqian Jiang, Xin-Yu Lu, Ya-Li Qin, Yan-Mei Zhang and Zhu-Qing Shao
Plants 2024, 13(9), 1274; https://doi.org/10.3390/plants13091274 - 5 May 2024
Viewed by 1252
Abstract
Dioscorea alata, commonly known as “greater yam”, is a vital crop in tropical and subtropical regions of the world, yet it faces significant threats from anthracnose disease, mainly caused by Colletotrichum gloeosporioides. However, exploring disease resistance genes in this species has [...] Read more.
Dioscorea alata, commonly known as “greater yam”, is a vital crop in tropical and subtropical regions of the world, yet it faces significant threats from anthracnose disease, mainly caused by Colletotrichum gloeosporioides. However, exploring disease resistance genes in this species has been challenging due to the difficulty of genetic mapping resulting from the loss of the flowering trait in many varieties. The receptor-like kinase (RLK) gene family represents essential immune receptors in plants. In this study, genomic analysis revealed 467 RLK genes in D. alata. The identified RLKs were distributed unevenly across chromosomes, likely due to tandem duplication events. However, a considerable number of ancient whole-genome or segmental duplications dating back over 100 million years contributed to the diversity of RLK genes. Phylogenetic analysis unveiled at least 356 ancient RLK lineages in the common ancestor of Dioscoreaceae, which differentially inherited and expanded to form the current RLK profiles of D. alata and its relatives. The analysis of cis-regulatory elements indicated the involvement of RLK genes in diverse stress responses. Transcriptome analysis identified RLKs that were up-regulated in response to C. gloeosporioides infection, suggesting their potential role in resisting anthracnose disease. These findings provide novel insights into the evolution of RLK genes in D. alata and their potential contribution to disease resistance. Full article
(This article belongs to the Special Issue Origin, Evolution and Functional Mechanisms of Plant Immune System)
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