Tomato disease resistances in the post-genomics era

Yuling Bai*, Zhe Yan, E. Moriones, R. Fernández-Muñoz

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference paperAcademicpeer-review

2 Citations (Scopus)

Abstract

Disease in tomato (Solanum lycopersicum) can be caused by many pathogenic organisms, including cellular pathogens (e.g., fungi, bacteria, phytoplasmas, oomycetes and nematodes) and non-cellular pathogens (e.g., viruses and viroids). To respond to pathogen attack, tomato plants, like other sessile organisms, have developed an immune system, where pathogen effectors and plant receptor proteins (e.g., resistance proteins) play a central role. With advances in the genomics era, our understanding of plant-pathogen interactions is evolving rapidly. For example, pathogen genomics has allowed a genome-wide study on the structure, function and evolution of effectors in pathogen genomes. So-called effectoromics offers a high-throughput functional approach to study effector-associated plant genes such as resistance (R) genes and susceptibility (S) genes. In tomato, “genome to germplasms” is facilitating a genome dimension to the exploration of plant diversity in resistance by sequencing and re-sequencing of genomes of available germplasm resources. Together with this breakthrough and powerful techniques for genome editing, novel strategies are being developed for breeding tomatoes with durable resistance to pathogens. Using examples of several tomato diseases, this review focuses on (1) layers of plant immune system, (2) the exploitation of plant S genes in resistance breeding, (3) rapid identification of R and S genes, and (4) novel routes for durable resistance to pathogens. Finally, the topic of breeding for resilience to combined biotic and abiotic stresses is discussed based on our results, which show extensive crosstalk between loci/pathways for resistance to pathogens and tolerance to abiotic stresses.

Original languageEnglish
Title of host publicationProceedings of the 5th International Symposium on Tomato Diseases
Subtitle of host publicationPerspectives and Future Directions in Tomato Protection
EditorsE. Moriones, R. Fernández-Muñoz
PublisherISHS
Pages1-17
ISBN (Print)9789462612037
DOIs
Publication statusPublished - 26 Jul 2018
EventV International Symposium on Tomato Diseases: Perspectives and Future Directions in Tomato Protection - Málaga, Spain
Duration: 13 Jun 201616 Jun 2016

Publication series

NameActa Horticulturae
Volume1207
ISSN (Print)0567-7572
ISSN (Electronic)2406-6168

Conference

ConferenceV International Symposium on Tomato Diseases
Country/TerritorySpain
CityMálaga
Period13/06/1616/06/16

Keywords

  • CRISPR/CAS9
  • Effector target
  • Effector-assisted R gene identification
  • Gene editing
  • Mutagenesis
  • Recessive resistance
  • Resilience to combined stresses
  • TILLING

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