Response of accessions within tomato wild species, Solanum pimpinellifolium to late blight

Majid R. Foolad, Matthew T. Sullenberger, Erik W. Ohlson, Beth Krueger Gugino

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Late blight (LB), caused by the oomycete Phytophthora infestans, is one of the most devastating diseases of the cultivated tomato (Solanum lycopersicum) worldwide. Most commercial cultivars of tomato are susceptible to LB. Previously, three major LB resistance genes (Ph-1, Ph-2, Ph-3) were identified and incorporated into a few commercial cultivars of tomato. Reduced effectiveness and potential breakdown of the resistance genes has necessitated identification, characterization and utilization of new sources of resistance. We evaluated the response of 67 accessions of the wild tomato species, S. pimpinellifolium to LB, under multiple field and greenhouse (GH) conditions and compared them with six control genotypes. Sixteen accessions were identified with strong LB resistance in both field and GH experiments. However, 12 accessions exhibited resistance similar to a control line which was homozygous for Ph-2 + Ph-3. Genotyping accessions with molecular markers for Ph-2 and Ph-3 were not conclusive, indicating that resistance in these accessions could be due to these or other resistance genes. Strong correlations were observed between field and GH disease response and between foliar and stem infection.

Original languageEnglish (US)
Pages (from-to)401-411
Number of pages11
JournalPlant Breeding
Volume133
Issue number3
DOIs
StatePublished - Jan 1 2014

Fingerprint

Solanum pimpinellifolium
Solanum
Phytophthora infestans
Lycopersicon esculentum
tomatoes
greenhouses
Oomycetes
genes
Genes
Solanum lycopersicum
cultivars
greenhouse experimentation
genotyping
Genotype
genetic markers
stems
genotype
infection
Infection

All Science Journal Classification (ASJC) codes

  • Agronomy and Crop Science
  • Genetics
  • Plant Science

Cite this

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title = "Response of accessions within tomato wild species, Solanum pimpinellifolium to late blight",
abstract = "Late blight (LB), caused by the oomycete Phytophthora infestans, is one of the most devastating diseases of the cultivated tomato (Solanum lycopersicum) worldwide. Most commercial cultivars of tomato are susceptible to LB. Previously, three major LB resistance genes (Ph-1, Ph-2, Ph-3) were identified and incorporated into a few commercial cultivars of tomato. Reduced effectiveness and potential breakdown of the resistance genes has necessitated identification, characterization and utilization of new sources of resistance. We evaluated the response of 67 accessions of the wild tomato species, S. pimpinellifolium to LB, under multiple field and greenhouse (GH) conditions and compared them with six control genotypes. Sixteen accessions were identified with strong LB resistance in both field and GH experiments. However, 12 accessions exhibited resistance similar to a control line which was homozygous for Ph-2 + Ph-3. Genotyping accessions with molecular markers for Ph-2 and Ph-3 were not conclusive, indicating that resistance in these accessions could be due to these or other resistance genes. Strong correlations were observed between field and GH disease response and between foliar and stem infection.",
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Response of accessions within tomato wild species, Solanum pimpinellifolium to late blight. / Foolad, Majid R.; Sullenberger, Matthew T.; Ohlson, Erik W.; Gugino, Beth Krueger.

In: Plant Breeding, Vol. 133, No. 3, 01.01.2014, p. 401-411.

Research output: Contribution to journalArticle

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