Research advances in the Pyrenophora teres-barley interaction.

Shaun J Clare,Robert S Brueggeman,Timothy L Friesen,Nathan A Wyatt

doi:10.1111/mpp.12896

Shaun J Clare, Robert S Brueggeman + Show 2 more

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https://doi.org/10.1111/mpp.12896

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Abstract

Summary Pyrenophora teres f. teres and P. teres f. maculata are significant pathogens that cause net blotch of barley. An increased number of loci involved in P. teres resistance or susceptibility responses of barley as well as interacting P. teres virulence effector loci have recently been identified through biparental and association mapping studies of both the pathogen and host. Characterization of the resistance/susceptibility loci in the host and the interacting effector loci in the pathogen will provide a path for targeted gene validation for better‐informed release of resistant barley cultivars. This review assembles concise consensus maps for all loci published for both the host and pathogen, providing a useful resource for the community to be used in pathogen characterization and barley breeding for resistance to both forms of P. teres.

Highlights

Pyrenophora teres is the causal agent of net blotch of barley and is found in two forms, P. teres f. teres and P. teres f. maculata, the causal agents of net form net blotch (NFNB) and spot form net blotch (SFNB), respectively (Smedegård-Petersen, 1971)
Liu et al (2011) stated that the following characteristics facilitate the use of P. teres as a candidate model organism: the worldwide economic importance of the disease, the ability to produce biparental mapping populations and clone genes from the pathogen, the amenability of the pathogen to transformation for gene validation, relatively abundant genomic resources in both the host and pathogen, and the large numbers of host mapping populations to decipher the interactions and diversity of both the host and pathogen
Over 340 and 140 QTLs have been published in relation to barley responses to P. teres f. teres and P. teres f. maculata isolates, respectively, of which eight loci are sequentially designated from Rpt1 to Rpt8 on chromosomes 3H, 1H, 2H, 7H, 6H, 5H, 4H and 4H, respectively (Table 1)

Summary

SUMMARY

Pyrenophora teres f. teres and P. teres f. maculata are significant pathogens that cause net blotch of barley. Maculata are significant pathogens that cause net blotch of barley. An increased number of loci involved in P. teres resistance or susceptibility responses of barley as well as interacting P. teres virulence effector loci have recently been identified through biparental and association mapping studies of both the pathogen and host. Characterization of the resistance/susceptibility loci in the host and the interacting effector loci in the pathogen will provide a path for targeted gene validation for better-informed release of resistant barley cultivars. This review assembles concise consensus maps for all loci published for both the host and pathogen, providing a useful resource for the community to be used in pathogen characterization and barley breeding for resistance to both forms of P. teres

INTRODUCTION

Findings

CONCLUSION AND FUTURE DIRECTION