Sources of Bacterial Leaf Streak Resistance Identified in a Diverse Collection of Barley Germplasm

Mitchell G. Ritzinger, Kevin P. Smith, Austin J. Case, Joseph R. Wodarek, Ruth Dill-Macky, Rebecca D. Curland, Brian J. Steffenson

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Bacterial leaf streak (BLS) is a sporadic yet damaging disease of cereals that is growing in importance across the Upper Midwest production region. In barley (Hordeum vulgare ssp. vulgare), this disease is caused primarily by the bacterium Xanthomonas translucens pv. translucens. Accessions resistant to BLS have been reported in past studies, but few have been rigorously validated in the field. To identify accessions carrying diverse resistance alleles to BLS, a largescale germplasm screening study was undertaken against strain CIX95 of X. translucens pv. translucens in St. Paul and Crookston, Minnesota, in 2020 and 2021. The germplasm screened was diverse and included adapted breeding lines from two improvement programs, two landrace panels (one global and one from Ethiopia/Eritrea), introgression lines from wild barley (H. vulgare ssp. spontaneum) in the genetic background of barley cultivar 'Rasmusson', and an assemblage of accessions previously reported to carry BLS resistance. Of the 2,094 accessions evaluated in this study, 32 (1.5%) exhibited a consistently high level of resistance across locations and years and had heading dates similar to standard cultivars grown in the region. Accessions resistant to BLS were identified from all germplasm panels tested, providing genetically diverse sources for barley improvement programs focused on breeding for resistance to this important bacterial disease.

Original languageEnglish (US)
Pages (from-to)802-808
Number of pages7
JournalPlant disease
Volume107
Issue number3
DOIs
StatePublished - Mar 2023

Bibliographical note

Funding Information:
Funding: This research was supported by the Minnesota State Legislature through the Rapid Agricultural Response Fund (RARF) managed by the Minnesota Agricultural Experiment Station (Project #RR252. “Genetics and Breeding of Bacterial Leaf Streak Resistance in Barley); the National Institute of Food and Agriculture, U.S. Department of Agriculture, Hatch project (#MIN-22-085 “Exploiting Wild Relatives for Cultivated Wheat and Barley Improvement”); the Lieberman-Okinow Endowment at the University of Minnesota; and the American Malting Barley Association.

Funding Information:
This research was supported by the Minnesota State Legislature through the Rapid Agricultural Response Fund (RARF) managed by the Minnesota Agricultural Experiment Station (Project #RR252. "Genetics and Breeding of Bacterial Leaf Streak Resistance in Barley); the National Institute of Food and Agriculture, U.S. Department of Agriculture, Hatch project (#MIN-22-085 "Exploiting Wild Relatives for Cultivated Wheat and Barley Improvement"); the Lieberman-Okinow Endowment at the University of Minnesota; and the American Malting Barley Association.

Publisher Copyright:
© 2023 The American Phytopathological Society.

Keywords

  • Hordeum vulgare ssp. vulgare
  • Xanthomonas translucens pv. translucens
  • bacterial leaf streak
  • cereals and grains
  • disease management
  • disease resistance
  • field crops
  • prokaryotes

PubMed: MeSH publication types

  • Journal Article

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