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 language | English (US) |
|---|---|
| Pages (from-to) | 401-411 |
| Number of pages | 11 |
| Journal | Plant Breeding |
| Volume | 133 |
| Issue number | 3 |
| DOIs | |
| State | Published - Jan 1 2014 |
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All Science Journal Classification (ASJC) codes
- Agronomy and Crop Science
- Genetics
- Plant Science
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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 journal › Article
TY - JOUR
T1 - Response of accessions within tomato wild species, Solanum pimpinellifolium to late blight
AU - Foolad, Majid R.
AU - Sullenberger, Matthew T.
AU - Ohlson, Erik W.
AU - Gugino, Beth Krueger
PY - 2014/1/1
Y1 - 2014/1/1
N2 - 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.
AB - 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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U2 - 10.1111/pbr.12172
DO - 10.1111/pbr.12172
M3 - Article
AN - SCOPUS:84901836224
VL - 133
SP - 401
EP - 411
JO - Plant Breeding
JF - Plant Breeding
SN - 0179-9541
IS - 3
ER -