Abstract
Abstract We have investigated the ability of mixed oligogalacturonides, a cell wall hydrolysate from Phytophthora sojae Hildebrand, and chitosan oligomers to induce resistance to Erwinia carotovora ssp. atroseptica in potato tubers (cv. Pentland Squire). Natural infection by Erwinia in stored potatoes generally originates in the surface tissues which have a markedly different biochemical composition to the perimedullary tissue. We therefore investigated the effect of different elicitors in inducing resistance in 2 mm deep wounds made on the surface of potato tubers. When wounded in this way and stored at 20°C and 100% relative humidity, tubers developed a significant level of natural resistance within 24 h. When the potatoes were treated with oligogalacturonides, or Phytophthora cell wall hydrolysate at the time of wounding and challenged with inoculum 8 h later, a significant reduction in disease occurred. Treatment with the chitosan elicitor had no effect on resistance.
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Claims 4
Claim · model-written summary
Wounded potato tubers developed significant natural resistance within 24 hours at 20°C and 100% relative humidity.
Verbatim
e0“When wounded in this way and stored at 20°C and 100% relative humidity, tubers developed a significant level of natural resistance within 24 h.”
Claim · model-written summary
Oligogalacturonide treatment at wounding significantly reduced disease after inoculation eight hours later.
- Taxon
- potatoes
Solanum tuberosume0 - Treatment
- oligogalacturonidese0
- Interactor
- Phytophthora
Phytophthorae0pathogen - Outcome
- diseasee0
- Direction
- reductione0
- Qualifier
- challenged with inoculum 8 h latere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When the potatoes were treated with oligogalacturonides, or Phytophthora cell wall hydrolysate at the time of wounding and challenged with inoculum 8 h later, a significant reduction in disease occurred.”
Claim · model-written summary
Phytophthora cell wall hydrolysate treatment at wounding significantly reduced disease after inoculation eight hours later.
- Taxon
- potatoesSolanum tuberosume0
- Treatment
- Phytophthora cell wall hydrolysatee0
- Outcome
- diseasee0
- Direction
- reductione0
- Qualifier
- challenged with inoculum 8 h latere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When the potatoes were treated with oligogalacturonides, or Phytophthora cell wall hydrolysate at the time of wounding and challenged with inoculum 8 h later, a significant reduction in disease occurred.”
Claim · model-written summary
Chitosan elicitor treatment had no reported effect on potato resistance.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- chitosan elicitore0
- Outcome
- resistancee0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment with the chitosan elicitor had no effect on resistance.”
t0“Potato Tubers”
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resistance inducer · disease · Solanum tuberosum (potato)Positive and negative results
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Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.