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Claim · model-written summary
Isolates I332 and I677 were pink on carnation leaf agar and olive to dark brown on oatmeal agar.
- Taxon
- Setophoma terrestris
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Setophoma terrestrist1 - Material
- I332 and I677e1
- Outcome
- pink on carnation leaf agar and were olive to dark brown on oatmeal agare1
Verbatim
t1“Setophoma terrestris”
e1“Single-spore isolates I332 and I677 were pink on carnation leaf agar and were olive to dark brown on oatmeal agar”
Title
H. M. Rivedal; A. G. Stone; K. B. Johnson Plant Disease 2018. doi:10.1094/pdis-06-18-0921-pdn
Other claims from this paper (11)
- Observation This is the first report of S. terrestris causing pink root rot of C. maxima in the United States.
- Observation Field surveys found 18 winter squash plants in 2014 with a bright pink root rot.
- Observation Field surveys found 11 winter squash plants in 2015 with a bright pink root rot.
- Observation Symptomatic plants collected in summer were distributed in aggregated foci.
- Observation Secondary and tertiary roots were pink, and in severe cases the pink discoloration extended into crown tissues.
- Observation Isolates produced numerous aggregated or solitary chlamydospores of 12 x 10 um on oatmeal agar.
- Observation Conidia were ellipsoid, 5 x 2 um.
- Observation BLAST searches showed DNA from all isolates and gene regions had 99% similarity to Setophoma terrestris.
- Intervention effect Inoculated winter squash plants developed pink root rot advancing into crown tissue, whereas control plants were symptomless.
- Observation S. terrestris was reisolated from inoculated plants and reidentified from ITS sequences.
- Observation When squash seeds were sown into potting medium inoculated with S. terrestris, all plants showed pink root rot symptoms after 12 weeks and the fungus was reisolated, indicating infection without wounding.