Olea europaea 28,631 claims

species · family Oleaceae · green plant · NCBI Taxonomy ↗

Common name: common olive — Also written in claims: olive · olive trees · olive tree · olive plants · olive cultivars · wild olive — NCBI synonyms: Olea sativa

Listed here with its subspecies, varieties and cultivar groups: Olea europaea var. sylvestris (292 claims), Olea europaea subsp. cuspidata (249 claims), Olea europaea subsp. europaea (22 claims), Olea europaea subsp. laperrinei (12 claims), Olea europaea subsp. maroccana (9 claims), Olea europaea subsp. guanchica (8 claims), Olea europaea subsp. cerasiformis (2 claims)

241 spellings

Questions studied on this organism442 questions17 with results that differ966 papers

Olea europaeaHans Hillewaert · CC BY-SA 3.0 · Wikimedia Commons ↗

28,631 claims

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Observationobservedreview summarynegativebasis n/a

Claim · model-written summary

The pathogen Venturia oleaginea weakens the photosynthetic capacity of olive.

Taxon: OliveOlea europaeat0
Interactor: Venturia oleagineaVenturia oleagineat1pathogen
Outcome: capacity for photosynthesise0
Direction: weakense0

Verbatim

e0
“The pathogen weakens the capacity for photosynthesis and promotes early defoliation”
✓ located verbatim in the source · abstract, characters 170–253

t0
“Olive Groves”
✓ located verbatim in the source · title, characters 56–68

t1
“Venturia oleaginea”
✓ located verbatim in the source · title, characters 18–36

Title

Olive Leaf Spot ( Venturia oleaginea ) in Mediterranean Olive Groves: A Persistent Challenge for Sustainable Production

Khadija Benamar; Saad Benamar Plant Health Cases 2026. doi:10.1079/planthealthcases.2026.0007

Other claims from this paper (2)

Observation The pathogen Venturia oleaginea promotes early defoliation of olive.
Observation The resulting damage reduces olive tree vigor, yield and oil quality.

Observationobservedreview summarynegativebasis n/a

Claim · model-written summary

The pathogen Venturia oleaginea promotes early defoliation of olive.

Taxon: OliveOlea europaeat0
Interactor: Venturia oleagineaVenturia oleagineat1pathogen
Outcome: early defoliatione0
Direction: promotese0

Verbatim

e0
“The pathogen weakens the capacity for photosynthesis and promotes early defoliation”
✓ located verbatim in the source · abstract, characters 170–253

t0
“Olive Groves”
✓ located verbatim in the source · title, characters 56–68

t1
“Venturia oleaginea”
✓ located verbatim in the source · title, characters 18–36

Title

Olive Leaf Spot ( Venturia oleaginea ) in Mediterranean Olive Groves: A Persistent Challenge for Sustainable Production

Khadija Benamar; Saad Benamar Plant Health Cases 2026. doi:10.1079/planthealthcases.2026.0007

Other claims from this paper (2)

Observationobservedreview summarynegativebasis n/a

Claim · model-written summary

The resulting damage reduces olive tree vigor, yield and oil quality.

Taxon: OliveOlea europaeat0
Interactor: Venturia oleagineaVenturia oleagineat1pathogen
Outcome: tree vigor, yield and oil qualitye0
Direction: reducede0

Verbatim

e0
“which results in reduced tree vigor, yield and oil quality”
✓ located verbatim in the source · abstract, characters 255–313

t0
“Olive Groves”
✓ located verbatim in the source · title, characters 56–68

t1
“Venturia oleaginea”
✓ located verbatim in the source · title, characters 18–36

Title

Olive Leaf Spot ( Venturia oleaginea ) in Mediterranean Olive Groves: A Persistent Challenge for Sustainable Production

Khadija Benamar; Saad Benamar Plant Health Cases 2026. doi:10.1079/planthealthcases.2026.0007

Other claims from this paper (2)

Method / resourceobservedoriginal resultmeasured

Claim · model-written summary

Fourteen POX primers yielded 136 bands, 86.0% polymorphic, with mean PIC 0.59 in olive cultivars.

Taxon: Olea europaea L.Olea europaeat0
Outcome: polymorphice0
Value: 86.0%e0
Qualifier: mean PIC = 0.59e0

Verbatim

e0
“Fourteen POX primers yielded 136 bands (86.0% polymorphic; mean PIC = 0.59)”
✓ located verbatim in the source · abstract, characters 339–414

t0
“Olea europaea L.”
✓ located verbatim in the source · title, characters 46–62

Title

Genetic diversity and population structure in Olea europaea L. using peroxidase gene-based (POX) and SRAP markers

Ömer Faruk Coşkun; Seher Toprak; Murat Çelik Discover Plants. 2026. doi:10.1007/s44372-026-00715-9

Other claims from this paper (7)

Method / resourceobservedoriginal resultmeasured

Claim · model-written summary

Twelve SRAP combinations produced 120 bands, 81.7% polymorphic, with PIC 0.51 in olive cultivars.

Taxon: Olea europaea L.Olea europaeat0
Outcome: bandse0
Value: 81.7%e0
Qualifier: PIC = 0.51e0

Verbatim

e0
“12 SRAP combinations produced 120 bands (81.7%; PIC = 0.51)”
✓ located verbatim in the source · abstract, characters 420–479

t0
“Olea europaea L.”
✓ located verbatim in the source · title, characters 46–62

Title

Genetic diversity and population structure in Olea europaea L. using peroxidase gene-based (POX) and SRAP markers

Ömer Faruk Coşkun; Seher Toprak; Murat Çelik Discover Plants. 2026. doi:10.1007/s44372-026-00715-9

Other claims from this paper (7)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Dice similarities among the olive cultivars ranged from 0.63 to 0.88.

Taxon: Olea europaea L.Olea europaeat0
Outcome: Dice similaritiese0
Value: 0.63–0.88e0
Qualifier: close (G2–G3) and divergent (G4) genotypese0

Verbatim

e0
“Dice similarities ranged 0.63–0.88, with close (G2–G3) and divergent (G4) genotypes”
✓ located verbatim in the source · abstract, characters 481–564

t0
“Olea europaea L.”
✓ located verbatim in the source · title, characters 46–62

Title

Genetic diversity and population structure in Olea europaea L. using peroxidase gene-based (POX) and SRAP markers

Ömer Faruk Coşkun; Seher Toprak; Murat Çelik Discover Plants. 2026. doi:10.1007/s44372-026-00715-9

Other claims from this paper (7)

Observationobservedoriginal resultmeasured

Claim · model-written summary

PCoA/UPGMA and STRUCTURE analyses suggested two subpopulations (K = 2) among the 12 olive cultivars, with admixture in several cultivars.

Taxon: Olea europaea L.Olea europaeat0
Outcome: two subpopulations (K = 2)e0
Qualifier: admixture in several cultivarse0

Verbatim

e0
“PCoA/UPGMA and STRUCTURE analyses, applied to this 12-cultivar panel, suggested two subpopulations (K = 2), with admixture in several cultivars”
✓ located verbatim in the source · abstract, characters 566–709

t0
“Olea europaea L.”
✓ located verbatim in the source · title, characters 46–62

Title

Genetic diversity and population structure in Olea europaea L. using peroxidase gene-based (POX) and SRAP markers

Ömer Faruk Coşkun; Seher Toprak; Murat Çelik Discover Plants. 2026. doi:10.1007/s44372-026-00715-9

Other claims from this paper (7)

Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors conclude POX+SRAP has complementary, cost-effective value for conservation, fingerprinting and parent selection in cultivated olive.

Taxon: oliveOlea europaeae1
Outcome: complementary, cost-effective value of POX+SRAPe0

Verbatim

e0
“demonstrates the complementary, cost-effective value of POX+SRAP for conservation, fingerprinting, and parent selection”
✓ located verbatim in the source · abstract, characters 1105–1224

e1
“cultivated olive”
✓ located verbatim in the source · abstract, characters 1074–1090

Title

Genetic diversity and population structure in Olea europaea L. using peroxidase gene-based (POX) and SRAP markers

Ömer Faruk Coşkun; Seher Toprak; Murat Çelik Discover Plants. 2026. doi:10.1007/s44372-026-00715-9

Other claims from this paper (7)

Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

Organic farming seems a suitable option for lowering the desertification risk of olive plantations.

Taxon: oliveOlea europaeae1
Outcome: lowering the desertification riske1

Verbatim

e1
“Organic farming therefore seems to be a suitable option for lowering the desertification risk of olive cultures/plantations”
✓ located verbatim in the source · abstract, characters 1493–1616

Title

Intraspecific trait variability of herbaceous plants in organic and conventional olive plantations in a desertification-prone region

Michele Migliorino; Ondřej Mudrák Organic Agriculture 2026. doi:10.1007/s13165-025-00543-3

Other claims from this paper (12)

Intervention effect Under organic management the understory plant community had a higher cover than under conventional management.
Observation Under organic management the understory had strong dominance of Avena fatua.
Intervention effect Under organic management the understory was dominated by species with a higher specific leaf area.
Intervention effect Under organic management the soil had a higher C content.
Intervention effect The higher soil C content under organic management reduced the level of desertification.
Intervention effect Intraspecific trait variability generally indicated lower environmental stress for plants in organic plots.
Intervention effect Plants in organic plots had higher stature.
Intervention effect Plants in organic plots had higher specific leaf area (SLA).
Intervention effect Plants in organic plots had lower leaf area.
Intervention effect Plants in organic plots had lower leaf mass.
Intervention effect Unexpectedly, plants in organic plots had a higher leaf dry matter content (LDMC).
Intervention effect Absence of ploughing supported an understory with high cover in which traits suited to between-plant competition were more common than traits for drought stress.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Trees receiving NPK-NF (4 mL/L) + CaB-NF (2 mL/L) had the maximum number of inflorescences per shoot (9.31).

Taxon: oliveOlea europaeae1
Material: Picuale1
Treatment: NPK-NF (4 mL/L) + CaB-NF (2 mL/L)e2
Outcome: inflorescences per shoote2
Direction: maximume2
Value: 9.31e2

Not reportedComparator

Verbatim

e1
“fifteen-year-old 'Picual' olive trees”
✓ located verbatim in the source · abstract, characters 690–727

e2
“Trees receiving NPK-NF (4 mL/L) + CaB-NF (2 mL/L) exhibited maximum flowering parameters, including 9.31 inflorescences per shoot and 68.51% perfect flowers, alongside the highest initial fruit set (37.37%) and final fruit set (26.95%)”
✓ located verbatim in the source · abstract, characters 893–1128

Title

Foliar application of nano-NPK and calcium-boron during the ‘off-year’ season enhances yield, improves oil quality, and mitigates biennial bearing in ‘Picual’ olive cultivar

Ayman Shaban; Hassan Mahmoud Korkar; Islam Ahmed; et al. BMC Plant Biology 2026. doi:10.1186/s12870-026-08984-y

Other claims from this paper (12)

Intervention effect Trees receiving NPK-NF (4 mL/L) + CaB-NF (2 mL/L) had the maximum proportion of perfect flowers (68.51%).
Intervention effect The NPK-NF (4 mL/L) + CaB-NF (2 mL/L) treatment gave the highest initial fruit set (37.37%).
Intervention effect The NPK-NF (4 mL/L) + CaB-NF (2 mL/L) treatment gave the highest final fruit set (26.95%).
Intervention effect The NPK-NF (4 mL/L) + CaB-NF (2 mL/L) treatment produced the greatest off-year yield (0.79 tonnes per acre).
Intervention effect The treatment reduced fruit drop to 27.83% compared with 51.77% in controls.
Intervention effect Foliar NPK-NF and CaB-NF increased leaf and fruit nitrogen, phosphorus and potassium concentrations in treated trees.
Intervention effect Foliar NPK-NF and CaB-NF increased leaf and fruit calcium concentrations in treated trees.
Intervention effect Virgin olive oil from treated trees showed improved oleic acid proportions, reaching 67.85%.
Intervention effect Virgin olive oil from treated trees showed increased pigment concentrations.
Intervention effect Virgin olive oil from treated trees maintained extra virgin classification.
Intervention effect NPK-NF (4 mL/L) + CaB-NF (3 mL/L) reduced alternate bearing severity to 31.06% compared with 88.08% in control trees.
Recommendation The authors conclude that foliar NPK-NF and CaB-NF is a viable nutritional strategy to enhance yield stability and productivity in commercial olive orchards.