Search claims · PlantClaims

Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Sprouting was associated with a significant increase in H2O2 content in potato tubers.

Taxon: Solanum tuberosum L.Solanum tuberosumt0
Organ / stage: Sproutinge7
Outcome: H2O2 contente7
Direction: increasee7

Verbatim

t0
“Solanum tuberosum L.”
✓ located verbatim in the source · title, characters 70–90

e7
“Sprouting was associated with a significant increase in H2O2 content”
✓ located verbatim in the source · abstract, characters 1413–1481

Title

Hydrogen Peroxide and a Catalase, Physiological Regulators of Potato (Solanum tuberosum L.) Tuber Dormancy

Mahmoud M’Hamdi; Hela Beji; Lassaâd Belbahri; et al. 2009

Other claims from this paper (16)

Mechanismauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

Nitration was proposed to inhibit catalase and increase H2O2 during ripening.

Taxon: peppere1
Outcome: increase in H2O2 contente0
Direction: increasee0
Qualifier: Nitration seems to play a key role in this down-regulatione0

Verbatim

e0
“Nitration seems to play a key role in this down-regulation, favoring an increase in H2O2 content during ripening”
✓ located verbatim in the source · abstract, characters 1327–1439

e1
“pepper (Capsicum annuum L.) fruit ripening”
✓ located verbatim in the source · abstract, characters 207–249

Title

Pepper catalase: a broad analysis of its modulation during fruit ripening and by nitric oxide

Salvador González-Gordo; Javier López-Jaramillo; Marta Rodríguez-Ruiz; et al. Biochemical Journal 2024. doi:10.1042/bcj20240247

Other claims from this paper (10)

Observation Three pepper catalase genes were identified.
Observation Catalase gene expression was differentially modulated during ripening and NO treatment.
Observation CaCat1 through CaCat3 protein expression showed dissimilar behavior.
Observation Catalase activity was 50% lower in ripe red fruit than immature green fruit.
Observation Gel electrophoresis identified one catalase isozyme.
Intervention effect Peroxynitrite exposure nitrated recombinant CaCat3.
Intervention effect Peroxynitrite nitrated Tyr348 near catalase active center.
Intervention effect Peroxynitrite nitrated Tyr360 near catalase active center.
Intervention effect Exogenous NO could reverse the ripening pattern.
Observation Pepper catalase structure favored a homodimer.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Hydrogen peroxide content increased rapidly during pear bud endodormancy.

Taxon: Pyrus pyrifoliaPyrus pyrifoliat0
Organ / stage: endodormancye0
Outcome: H2O2 contente0
Direction: increasee0

Verbatim

e0
“H2O2 content exhibited a rapid increase during endodormancy”
✓ located verbatim in the source · abstract, characters 969–1028

t0
“Pear (Pyrus pyrifolia)”
✓ located verbatim in the source · title, characters 85–107

Title

Screening and Expression Analysis of POD Gene in POD-H2O2 Pathway on Bud Dormancy of Pear (Pyrus pyrifolia)

Xuwen Xiang; Keke Song; Yinyin Li; et al. Forests 2024. doi:10.3390/f15030434

Other claims from this paper (6)

Observation PpPOD4-like was the most significantly expressed of seven POD genes.
Observation PpPOD4-like localized to cell membranes.
Observation Hydrogen peroxide content decreased swiftly after pear bud ecodormancy.
Association POD activity followed the fluctuation pattern of hydrogen peroxide content.
Observation PpPOD4-like expression was markedly upregulated overall.
Mechanism The authors infer that PpPOD4-like modulates hydrogen peroxide through POD activity in pear dormancy.

Mechanismhypothesisoriginal resultbasis n/a

Claim · model-written summary

An increase in H2O2 levels may trigger the sequence of reactions involved in breaking endodormancy.

Taxon: Japanese peare0
Compound: H2O2e5
Outcome: breaking of endodormancye5

Verbatim

e0
“Hydrogen peroxide (H2O2) content was determined in flower buds of Japanese pear (Pyrus pyrifolia Nakai cv. Kosui) trees under natural conditions during the development and their release from endodormancy”
✓ located verbatim in the source · abstract, characters 0–203

e5
“These results suggest that H2O2 can substitute for the chilling requirement, and that the increase in H2O2 levels may trigger the sequence of reactions involved in the breaking of endodormancy”
✓ located verbatim in the source · abstract, characters 1354–1546

Title

Changes in Hydrogen Peroxide Content in Flower Buds of Japanese Pear(Pyrus pyrifolia Nakai) in Relation to Breaking of Endodormancy.

Haruyuki Kuroda; Toshihiko Sugiura; Daiyu Ito Journal of the Japanese Society for Horticultural Science 2002. doi:10.2503/jjshs.71.610

Other claims from this paper (13)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Bud hydrogen peroxide content gradually increased during endodormancy development.

Taxon: GrapevineVitist0
Organ / stage: bud EDe0
Outcome: H2O2 contente0
Direction: increasee0

Verbatim

e0
“gradual increase in the H2O2 content during the development of bud ED”
✓ located verbatim in the source · abstract, characters 299–368

t0
“Grapevine (Vitis vinifera L.)”
✓ located verbatim in the source · title, characters 81–110

Title

Hydrogen Peroxide Increases during Endodormancy and Decreases during Budbreak in Grapevine (Vitis vinifera L.) Buds

Francisco Javier Pérez; Ximena Noriega; Sebastián Rubio Antioxidants 2021. doi:10.3390/antiox10060873

Other claims from this paper (11)

Mechanism The rise in bud hydrogen peroxide was mainly attributed to increased peroxidase activity.
Association Maximum bud hydrogen peroxide content coincided with maximum endodormancy depth.
Observation Bud hydrogen peroxide content decreased during budbreak.
Intervention effect Exogenous hydrogen peroxide repressed VvIPT3a and VvLOG1 expression.
Intervention effect Exogenous hydrogen peroxide induced VvCKX3 expression.
Mechanism Hydrogen peroxide potentially reduces cytokinin content in grapevine buds.
Intervention effect Hydrogen peroxide induced VvAMI1 and VvYUC3 expression.
Intervention effect Hydrogen peroxide induced VvPIN3 expression.
Mechanism Hydrogen peroxide potentially increases auxin content and transport in grapevine buds.
Association The authors suggest bud hydrogen peroxide is associated with endodormancy depth.
Mechanism The authors suggest hydrogen peroxide negatively regulates grapevine budbreak.

Associationobservedoriginal resultmeasured

Claim · model-written summary

The increase in H2O2 during chilling is closely associated with the breaking of endodormancy in Japanese pear.

Taxon: Japanese peare0
Compound: H2O2e2
Outcome: breaking of endodormancye2
Direction: closely associatede2

Verbatim

e0
“Hydrogen peroxide (H2O2) content was determined in flower buds of Japanese pear (Pyrus pyrifolia Nakai cv. Kosui) trees under natural conditions during the development and their release from endodormancy”
✓ located verbatim in the source · abstract, characters 0–203

e2
“In unchilled flower buds from November 1 throughout the winter, H2O2 content did not change significantly and remained low. No budbreak was observed at the end of March which indicate that the increase in the level of H2O2 during chilling is closely associated with the breaking of endodormancy”
✓ located verbatim in the source · abstract, characters 394–688

Title

Changes in Hydrogen Peroxide Content in Flower Buds of Japanese Pear(Pyrus pyrifolia Nakai) in Relation to Breaking of Endodormancy.

Haruyuki Kuroda; Toshihiko Sugiura; Daiyu Ito Journal of the Japanese Society for Horticultural Science 2002. doi:10.2503/jjshs.71.610

Other claims from this paper (13)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Hydrogen peroxide content decreased swiftly after pear bud ecodormancy.

Taxon: Pyrus pyrifoliaPyrus pyrifoliat0
Organ / stage: ecodormancye0
Outcome: H2O2 contente0
Direction: decreasede0

Verbatim

e0
“H2O2 content exhibited a rapid increase during endodormancy and decreased swiftly after ecodormancy”
✓ located verbatim in the source · abstract, characters 969–1068

t0
“Pear (Pyrus pyrifolia)”
✓ located verbatim in the source · title, characters 85–107

Title

Screening and Expression Analysis of POD Gene in POD-H2O2 Pathway on Bud Dormancy of Pear (Pyrus pyrifolia)

Xuwen Xiang; Keke Song; Yinyin Li; et al. Forests 2024. doi:10.3390/f15030434

Other claims from this paper (6)

Observation PpPOD4-like was the most significantly expressed of seven POD genes.
Observation PpPOD4-like localized to cell membranes.
Observation Hydrogen peroxide content increased rapidly during pear bud endodormancy.
Association POD activity followed the fluctuation pattern of hydrogen peroxide content.
Observation PpPOD4-like expression was markedly upregulated overall.
Mechanism The authors infer that PpPOD4-like modulates hydrogen peroxide through POD activity in pear dormancy.

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

DMTU increased type III embryogenesis efficiency as endogenous H2O2 declined.

Taxon: Larix kaempferi × Larix olgensisLarix gmelinii var. olgensis ×Larix kaempferit0
Material: type III ESMe0
Treatment: DMTU (dimethylthiourea)e0
Outcome: somatic embryogenesis efficiencye0
Direction: increasee0

Not reportedComparator

Verbatim

e0
“treatment with the H2O2 scavenger DMTU (dimethylthiourea) could significantly increase the somatic embryogenesis efficiency of the type III ESM, as a result of a decline in endogenous H2O2 content”
✓ located verbatim in the source · abstract, characters 1793–1989

t0
“Larix kaempferi × Larix olgensis”
✓ located verbatim in the source · title, characters 27–59

Title

H2O2 Significantly Affects Larix kaempferi × Larix olgensis Somatic Embryogenesis

Junjie Zhu; Kaikai Zhang; Huiru Xiong; et al. International Journal of Molecular Sciences 2024. doi:10.3390/ijms25010669

Other claims from this paper (10)

Method / resource A somatic embryogenesis system was established for the Larix hybrid.
Observation Late cotyledonary embryos gave the highest ESM induction rate.
Intervention effect ABA and PEG induced somatic embryos.
Intervention effect ABA assisted embryo growth.
Intervention effect PEG facilitated proembryo-like structures.
Observation Three ESM types formed during subculture.
Observation Type I ESM readily formed somatic embryos.
Association Type III ESM browned severely, had more H2O2 and formed fewer somatic embryos than type I.
Intervention effect External H2O2 lowered somatic embryogenesis efficiency in types I and III.
Association Higher exogenous H2O2 corresponded to lower embryogenesis efficiency.

Associationobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

In unchilled Japanese pear flower buds, H2O2 content did not change significantly over the winter.

Taxon: Japanese peare0
Organ / stage: unchilled flower budse2
Outcome: H2O2 contente2
Direction: did not changee2
Qualifier: remained lowe2

Verbatim

e0
“Hydrogen peroxide (H2O2) content was determined in flower buds of Japanese pear (Pyrus pyrifolia Nakai cv. Kosui) trees under natural conditions during the development and their release from endodormancy”
✓ located verbatim in the source · abstract, characters 0–203

e2
“In unchilled flower buds from November 1 throughout the winter, H2O2 content did not change significantly and remained low. No budbreak was observed at the end of March which indicate that the increase in the level of H2O2 during chilling is closely associated with the breaking of endodormancy”
✓ located verbatim in the source · abstract, characters 394–688

Title

Changes in Hydrogen Peroxide Content in Flower Buds of Japanese Pear(Pyrus pyrifolia Nakai) in Relation to Breaking of Endodormancy.

Haruyuki Kuroda; Toshihiko Sugiura; Daiyu Ito Journal of the Japanese Society for Horticultural Science 2002. doi:10.2503/jjshs.71.610

Other claims from this paper (13)

Associationobservedoriginal resultmeasured

Claim · model-written summary

Increased NADPH oxidase activity was correlated with increased hydrogen peroxide content and induction of mitotic activity in vascular cylinder cells of cultured hypocotyls.

Taxon: Mesembryanthemum crystallinum L.Mesembryanthemum crystallinumt0
Organ / stage: vascular cylinder cellse0
Gene: NADPH oxidasee0
Outcome: hydrogen peroxide (H2O2) content and induction of mitotic activitye0
Direction: increasee0

Verbatim

t0
“Mesembryanthemum crystallinum L.”
✓ located verbatim in the source · title, characters 83–115

e0
“The increase of NADPH oxidase activity was correlated with an increase of hydrogen peroxide (H2O2) content and induction of mitotic activity in vascular cylinder cells”
✓ located verbatim in the source · abstract, characters 220–387

Title

The localization of NADPH oxidase and reactive oxygen species in in vitro-cultured Mesembryanthemum crystallinum L. hypocotyls discloses their differing roles in rhizogenesis

Marta Libik-Konieczny; Małgorzata Kozieradzka-Kiszkurno; Christine Desel; et al. PROTOPLASMA 2014. doi:10.1007/s00709-014-0692-2

Other claims from this paper (13)

“increase of H2O2 content”

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