- salicylic acidPositive and negative results16 papers: 15 positive, 1 negative or no effect
- (+)-abscisic acidPositive and negative results9 papers: 8 positive, 1 negative or no effect
- (-)-methyl jasmonatePositive and negative results9 papers: 7 positive, 2 negative or no effect
- sucrosePositive and negative results6 papers: 5 positive, 1 negative or no effect
- N-benzyladeninePositive and negative results5 papers: 3 positive, 2 negative or no effect
- ethenePositive and negative results5 papers: 3 positive, 2 negative or no effect
- Ralstonia solanacearumPositive and negative results4 papers: 3 positive, 1 negative or no effect
- Gibberellic acidPositive and negative results3 papers: 1 positive, 2 negative or no effect
- cadmium atomPositive and negative results3 papers: 1 positive, 2 negative or no effect
- calcium(2+)Positive and negative results3 papers: 2 positive, 1 negative or no effect
- hydrogen peroxidePositive and negative results3 papers: 2 positive, 1 negative or no effect
- melatoninPositive and negative results3 papers: 2 positive, 1 negative or no effect
- mannitolPositive and negative results2 papers: 1 positive, 1 negative or no effect
- oligogalacturonidePositive and negative results2 papers: 1 positive, 1 negative or no effect
- Bacillus subtilisResults agree8 papers: 8 positive, 0 negative or no effect
- Phytophthora infestansResults agree6 papers: 6 positive, 0 negative or no effect
- jasmonic acidResults agree6 papers: 6 positive, 0 negative or no effect
- PhytophthoraResults agree4 papers: 4 positive, 0 negative or no effect
- Bacillus thuringiensisResults agree3 papers: 3 positive, 0 negative or no effect
- Nicotiana tabacumResults agree3 papers: 3 positive, 0 negative or no effect
- sodium chlorideResults agree3 papers: 3 positive, 0 negative or no effect
- 1-naphthaleneacetic acidResults agree2 papers: 0 positive, 2 negative or no effect
- 3-aminobutanoic acidResults agree2 papers: 2 positive, 0 negative or no effect
- 7-phospho-2-dehydro-3-deoxy-D-arabino-heptonic acidResults agree2 papers: 0 positive, 2 negative or no effect
- Pseudomonas syringaeResults agree2 papers: 2 positive, 0 negative or no effect
- actinomycin DResults agree2 papers: 0 positive, 2 negative or no effect
- brassinolideResults agree2 papers: 2 positive, 0 negative or no effect
- chitosanResults agree2 papers: 2 positive, 0 negative or no effect
- cycloheximideResults agree2 papers: 0 positive, 2 negative or no effect
- double-stranded RNAResults agree2 papers: 2 positive, 0 negative or no effect
- infectionPositive and negative results21 papers: 17 positive, 4 negative or no effect
- loss of functionPositive and negative results17 papers: 6 positive, 11 negative or no effect
- heatPositive and negative results16 papers: 10 positive, 6 negative or no effect
- droughtPositive and negative results13 papers: 9 positive, 4 negative or no effect
- inoculationPositive and negative results11 papers: 9 positive, 2 negative or no effect
- classPositive and negative results10 papers: 8 positive, 2 negative or no effect
- lightPositive and negative results10 papers: 7 positive, 3 negative or no effect
- coldPositive and negative results9 papers: 5 positive, 4 negative or no effect
- transgenicPositive and negative results9 papers: 4 positive, 5 negative or no effect
- mechanicalPositive and negative results7 papers: 4 positive, 3 negative or no effect
- salinityPositive and negative results7 papers: 4 positive, 3 negative or no effect
- ozonePositive and negative results4 papers: 1 positive, 3 negative or no effect
- applicationPositive and negative results3 papers: 2 positive, 1 negative or no effect
- fertilizationPositive and negative results3 papers: 2 positive, 1 negative or no effect
- mycorrhizaPositive and negative results3 papers: 2 positive, 1 negative or no effect
- biocontrolPositive and negative results2 papers: 1 positive, 1 negative or no effect
- processingPositive and negative results2 papers: 1 positive, 1 negative or no effect
- radiationPositive and negative results2 papers: 1 positive, 1 negative or no effect
- storagePositive and negative results2 papers: 1 positive, 1 negative or no effect
- resistance inducerResults agree6 papers: 6 positive, 0 negative or no effect
Claims are grouped by organism, treatment and what was measured or targeted. Claims that compare genotypes are left out; a claim about lacking a nutrient counts the other way round in that nutrient’s question. “Results differ” marks a question where two model reviewers, reading both claims, accepted at least one pair of papers whose results differ.