Search claims · PlantClaims

Mechanismhypothesisoriginal resultnegativebasis n/a

Claim · model-written summary

Oxidative damage in Rhododendron jinggangshanicum under high temperature may be related to the increase in H2O2 and MDA and the reduction in AsA.

Taxon: Rhododendron jinggangshanicumt0
Compound: H2O2e6
Outcome: oxidative damagee6
Qualifier: may be related toe6

Verbatim

t0
“Rhododendron jinggangshanicum”
✓ located verbatim in the source · title, characters 45–74

e6
“the oxidative damage which R.jinggangshanicum suffered under the high temperature stress may be related to the obvious increase in the content of H2O2 and MDA,as well as largely reduced content of AsA”
✓ located verbatim in the source · abstract, characters 1463–1663

Title

Responses of Antioxidant System in Leaves of Rhododendron jinggangshanicum to High Temperature Stress

Shusheng Wang Xibei zhiwu xuebao 2010

Other claims from this paper (12)

Intervention effect At 30℃ the leaf POD activity of Rhododendron jinggangshanicum increased by 44.44%.
Intervention effect At 38℃ the leaf POD activity of Rhododendron jinggangshanicum increased by 127.16%.
Intervention effect At 30℃ the leaf APX activity of Rhododendron jinggangshanicum increased by 33.12%.
Intervention effect At 38℃ the leaf APX activity of Rhododendron jinggangshanicum increased by 129.35%.
Intervention effect At 30℃ the leaf CAT activity of Rhododendron jinggangshanicum increased by 106.52%.
Intervention effect At 38℃ the leaf CAT activity of Rhododendron jinggangshanicum increased by 188.64%.
Intervention effect At 30℃ the change in SOD of Rhododendron jinggangshanicum was not larger, at 3.77% increase.
Intervention effect At 38℃ the change in SOD of Rhododendron jinggangshanicum was not larger, at 5.11% increase.
Association Soluble protein and proline contents increased with rising temperature in Rhododendron jinggangshanicum.
Association Ascorbic acid content decreased with rising temperature in Rhododendron jinggangshanicum.
Association H2O2 and MDA contents accumulated greatly under high-temperature strengthening in Rhododendron jinggangshanicum.
Mechanism Increasing antioxidant enzyme activities and proline content may decrease oxidative damage under high temperature in Rhododendron jinggangshanicum.

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)

Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

Suppression of ascorbate peroxidase and catalase enzymatic activities is proposed to explain the increase in H2O2 content in maize.

Taxon: maizeZea mayse0
Gene: ascorbate peroxidase and catalase enzymatic activitiese5
Outcome: H 2 O 2 contente5

Verbatim

e0
“leaves of maize seedlings treated with an inhibitor of nitric oxide synthase-like activity”
✓ located verbatim in the source · abstract, characters 554–644

e5
“inhibition of nitric oxide synthase-like activity, which suppresses ascorbate peroxidase and catalase enzymatic activities, results in increased H 2 O 2 content”
✓ located verbatim in the source · abstract, characters 1314–1474

Title

Inhibition of NOS- like activity in maize alters the expression of genes involved in H2O2 scavenging and glycine betaine biosynthesis

Kyle Phillips; Anelisa Majola; Arun Gokul; et al. Scientific Reports 2018. doi:10.1038/s41598-018-31131-z

Other claims from this paper (5)

Intervention effect In maize seedlings treated with a nitric oxide synthase inhibitor, transcript levels of betaine aldehyde dehydrogenase were decreased.
Intervention effect In maize plants treated with the nitric oxide synthase inhibitor, transcript levels of ascorbate peroxidase-encoding genes were down-regulated.
Intervention effect Catalase activity was suppressed in maize leaves treated with the nitric oxide synthase inhibitor.
Intervention effect The expression of catalase genes was suppressed in maize leaves treated with the nitric oxide synthase inhibitor.
Intervention effect Inhibition of nitric oxide synthase-like activity resulted in increased H 2 O 2 content in maize.

Mechanismauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

H2O2 can substitute for the chilling requirement in breaking endodormancy.

Taxon: Japanese peare0
Compound: H2O2e5
Outcome: substitute for the chilling requiremente5

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)

Mechanismauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Phenols and flavonoids were major antioxidant metabolites in scavenging cellular H2O2 in sunflower.

Taxon: sunflowerHelianthus annuuse1
Compound: phenols and flavonoidse3
Outcome: scavenging cellular H2O2e6

Verbatim

e1
“Results revealed that sunflower genotypes have similar responses at two osmotic potentials for shoot and root length and fresh weight”
✓ located verbatim in the source · abstract, characters 805–938

e3
“Increase in content of phenols and flavonoids were detected for all three genotypes under stress”
✓ located verbatim in the source · abstract, characters 1553–1649

e6
“these were major antioxidant metabolites in scavenging cellular H2O2”
✓ located verbatim in the source · abstract, characters 1669–1737

Title

Drought Stress Responses of Sunflower Germplasm Developed after Wide Hybridization

Roumiana Dimova Vassilevska-Ivanova; Lydia Shtereva; Ira Stancheva; et al. Turkish Journal of Agriculture - Food Science and Technology 2016. doi:10.24925/turjaf.v4i10.859-866.791

Other claims from this paper (5)

Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

The mining liquid waste treatment triggers enzymatic control of H2O2 levels in Polypogon australis.

Taxon: Polypogon australisPolypogon australise0
Treatment: treatment of the plants with the MLWe6
Outcome: enzymatic control of H2O2 levelse6

Verbatim

e0
“H2O2-reducing enzyme activity in the metallophyte plant species Polypogon australis when treated with a mining liquid waste (MLW)”
✓ located verbatim in the source · abstract, characters 56–185

e6
“the treatment of the plants with the MLW but not the solubility of metals provokes an increase of the H2O2 content in the tissues and triggers the enzymatic control of H2O2 levels”
✓ located verbatim in the source · abstract, characters 1276–1455

Title

Enzymatic reduction of hydrogen peroxide on Polypogon australis plants grown in a copper mining liquid waste

D. Jara-Hermosilla; D. Barros-Vásquez; A. Muñoz-Rojas; et al. South African Journal of Botany 2017. doi:10.1016/j.sajb.2016.12.017

Other claims from this paper (8)

Intervention effect Plants treated with acidic mining liquid waste showed elevated copper and zinc accumulation in their tissues.
Intervention effect Malondialdehyde content increased in the roots of treated plants during the first half hour of treatment.
Intervention effect Malondialdehyde content remained constant in treated plants until the end of treatment.
Intervention effect MDA levels in leaves of treated plants steadily increased throughout the treatment.
Intervention effect H2O2 levels increased during the first 2 h of treatment with mining liquid waste.
Intervention effect H2O2 levels then decreased to values close to those of untreated control plants.
Association Copper in roots and H2O2 levels in tissues were correlated with H2O2-reducing enzyme activity.
Intervention effect Mining liquid waste treatment increased H2O2 content in the tissues, but the solubility of metals did not.

Mechanismauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The reduced H2O2 levels are proposed to explain the extension of the fiber elongation stage in CRISPR mutant lines.

Taxon: cottonGossypium hirsutumt0
Outcome: extension of fiber elongation stagee3
Qualifier: reduced H 2 O 2 levelse3

Verbatim

t0
“promotes cotton fiber elongation”
✓ located verbatim in the source · title, characters 72–104

e3
“the increase in GSH content and glutathione peroxidase (GPX) enzyme activity led to enhanced total antioxidant capacity (T‐AOC), resulting in reduced H 2 O 2 levels, which contributed to the extension of fiber elongation stage in CRISPR mutant lines”
✓ located verbatim in the source · abstract, characters 1046–1295

Title

Synergistic interplay of redox homeostasis and polysaccharide synthesis promotes cotton fiber elongation

Xuehan Tian; Mengyuan Ji; Jiaqi You; et al. The Plant Journal 2024. doi:10.1111/tpj.16615

Other claims from this paper (11)

Intervention effect Loss of function of GhMDHAR1A and GhDHAR2A significantly increased cotton fiber length.
Intervention effect CRISPR mutant lines showed up-regulated expression of antioxidant genes.
Intervention effect CRISPR mutant lines showed delayed expression of secondary wall-related genes.
Intervention effect CRISPR mutant lines showed temporally prolonged expression of primary wall-related genes.
Intervention effect GSH content increased in CRISPR mutant lines.
Intervention effect Glutathione peroxidase (GPX) enzyme activity increased in CRISPR mutant lines.
Intervention effect Total antioxidant capacity (T-AOC) was enhanced in CRISPR mutant lines.
Intervention effect H2O2 levels were reduced in CRISPR mutant lines.
Intervention effect Polysaccharide synthesis increased in CRISPR mutant lines.
Mechanism Increased polysaccharide synthesis is proposed to supply raw materials for fiber cell wall elongation.
Mechanism Synergistic interplay between redox homeostasis and polysaccharide synthesis may facilitate cell wall remodeling and fiber elongation.

“increase of H2O2 content”

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