Abstract
Abstract Quinoa performance reduces under water‐limited conditions and can be improved through exogenous application of stress signalling molecule such as hydrogen peroxide (H 2 O 2 ). This study was conducted to elucidate the role of H 2 O 2 in quinoa at two water regimes maintained as full irrigated at 100% field capacity ( FC ~28% soil volumetric water contents; SVWC ) and at 60% FC (~17% SVWC ) as drought stress. Hydrogen peroxide concentrations, that is 80 m m for seed priming and 15 m m as foliar spray, were used from our preliminary experiments. Drought stress significantly reduced the plant growth, water status, photosynthetic activity and increased reactive oxygen species production (H 2 O 2 and O 2 •− ) resulting in higher oxidative damage in quinoa. Exogenous applied H 2 O 2 as priming agent improved emergence attributes by earlier emergence and made quinoa more tolerant to upcoming drought stress. Nevertheless, exogenously applied H 2 O 2 exhibited significantly higher stomatal conductance (34%), transpiration rate (39%), photosynthetic rate (42%), chlorophyll content index (36%), proline (19%) and total soluble sugar contents (14%) with respect to non‐treated plants under water‐deficit conditions. The H 2 O 2 application regulated the Abscisic acid ( ABA ) concentration under both conditions and reduced it by 30% in drought‐stressed plants as compared to non‐treated stressed plants. The exogenous application also enhanced the enzymatic antioxidants activities, including SOD , POD , CAT and APX by 32%, 31%, 34% and 53%, respectively, in quinoa plants under drought stress. We conclude that exogenous applied H 2 O 2 improved quinoa performance under drought stress is associated with higher accumulation of osmolytes, regulating ABA level and enhanced enzymatic antioxidant activities.
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Claims 16
Claim · model-written summary
Drought reduced quinoa growth, water status and photosynthetic activity.
- Taxon
- quinoa
Chenopodium quinoae0 - Treatment
- Drought stresse0
- Outcome
- plant growth, water status, photosynthetic activitye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress significantly reduced the plant growth, water status, photosynthetic activity and increased reactive oxygen species production (H 2 O 2 and O 2 •− ) resulting in higher oxidative damage in quinoa.”
Claim · model-written summary
Drought increased reactive oxygen species production in quinoa.
- Taxon
- quinoaChenopodium quinoae0
- Treatment
- Drought stresse0
- Outcome
- reactive oxygen species production (H 2 O 2 and O 2 •− )e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress significantly reduced the plant growth, water status, photosynthetic activity and increased reactive oxygen species production (H 2 O 2 and O 2 •− ) resulting in higher oxidative damage in quinoa.”
Claim · model-written summary
Drought caused higher oxidative damage in quinoa.
- Taxon
- quinoaChenopodium quinoae0
- Treatment
- Drought stresse0
- Outcome
- oxidative damagee0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress significantly reduced the plant growth, water status, photosynthetic activity and increased reactive oxygen species production (H 2 O 2 and O 2 •− ) resulting in higher oxidative damage in quinoa.”
Claim · model-written summary
Hydrogen peroxide seed priming promoted earlier emergence.
- Taxon
- quinoaChenopodium quinoae0
- Treatment
- H 2 O 2 as priming agente0
- Outcome
- emergence attributese0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous applied H 2 O 2 as priming agent improved emergence attributes by earlier emergence and made quinoa more tolerant to upcoming drought stress.”
Claim · model-written summary
Hydrogen peroxide priming increased quinoa tolerance of subsequent drought.
- Taxon
- quinoaChenopodium quinoae0
- Treatment
- H 2 O 2 as priming agente0
- Outcome
- tolerant to upcoming drought stresse0
- Direction
- more tolerante0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous applied H 2 O 2 as priming agent improved emergence attributes by earlier emergence and made quinoa more tolerant to upcoming drought stress.”
Claim · model-written summary
Exogenous hydrogen peroxide increased stomatal conductance by 34% under water deficit.
- Taxon
- quinoaChenopodium quinoat0
- Treatment
- exogenously applied H 2 O 2e0
- Outcome
- stomatal conductancee0
- Direction
- highere0
- Value
- 34%e0
- Qualifier
- under water‐deficit conditionse0
- Comparator
- non‐treated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenously applied H 2 O 2 exhibited significantly higher stomatal conductance (34%), transpiration rate (39%), photosynthetic rate (42%), chlorophyll content index (36%), proline (19%) and total soluble sugar contents (14%) with respect to non‐treated plants under water‐deficit conditions.”
t0“quinoa”
Claim · model-written summary
Exogenous hydrogen peroxide increased transpiration rate by 39% under water deficit.
- Taxon
- quinoaChenopodium quinoat0
- Treatment
- exogenously applied H 2 O 2e0
- Outcome
- transpiration ratee0
- Direction
- highere0
- Value
- 39%e0
- Qualifier
- under water‐deficit conditionse0
- Comparator
- non‐treated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenously applied H 2 O 2 exhibited significantly higher stomatal conductance (34%), transpiration rate (39%), photosynthetic rate (42%), chlorophyll content index (36%), proline (19%) and total soluble sugar contents (14%) with respect to non‐treated plants under water‐deficit conditions.”
t0“quinoa”
Claim · model-written summary
Exogenous hydrogen peroxide increased photosynthetic rate by 42% under water deficit.
- Taxon
- quinoaChenopodium quinoat0
- Treatment
- exogenously applied H 2 O 2e0
- Outcome
- photosynthetic ratee0
- Direction
- highere0
- Value
- 42%e0
- Qualifier
- under water‐deficit conditionse0
- Comparator
- non‐treated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenously applied H 2 O 2 exhibited significantly higher stomatal conductance (34%), transpiration rate (39%), photosynthetic rate (42%), chlorophyll content index (36%), proline (19%) and total soluble sugar contents (14%) with respect to non‐treated plants under water‐deficit conditions.”
t0“quinoa”
Claim · model-written summary
Exogenous hydrogen peroxide increased chlorophyll content index by 36% under water deficit.
- Taxon
- quinoaChenopodium quinoat0
- Treatment
- exogenously applied H 2 O 2e0
- Outcome
- chlorophyll content indexe0
- Direction
- highere0
- Value
- 36%e0
- Qualifier
- under water‐deficit conditionse0
- Comparator
- non‐treated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenously applied H 2 O 2 exhibited significantly higher stomatal conductance (34%), transpiration rate (39%), photosynthetic rate (42%), chlorophyll content index (36%), proline (19%) and total soluble sugar contents (14%) with respect to non‐treated plants under water‐deficit conditions.”
t0“quinoa”
Claim · model-written summary
Exogenous hydrogen peroxide increased proline by 19% under water deficit.
- Taxon
- quinoaChenopodium quinoat0
- Treatment
- exogenously applied H 2 O 2e0
- Outcome
- prolinee0
- Direction
- highere0
- Value
- 19%e0
- Qualifier
- under water‐deficit conditionse0
- Comparator
- non‐treated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenously applied H 2 O 2 exhibited significantly higher stomatal conductance (34%), transpiration rate (39%), photosynthetic rate (42%), chlorophyll content index (36%), proline (19%) and total soluble sugar contents (14%) with respect to non‐treated plants under water‐deficit conditions.”
t0“quinoa”
Claim · model-written summary
Exogenous hydrogen peroxide increased total soluble sugar contents by 14% under water deficit.
- Taxon
- quinoaChenopodium quinoat0
- Treatment
- exogenously applied H 2 O 2e0
- Outcome
- total soluble sugar contentse0
- Direction
- highere0
- Value
- 14%e0
- Qualifier
- under water‐deficit conditionse0
- Comparator
- non‐treated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenously applied H 2 O 2 exhibited significantly higher stomatal conductance (34%), transpiration rate (39%), photosynthetic rate (42%), chlorophyll content index (36%), proline (19%) and total soluble sugar contents (14%) with respect to non‐treated plants under water‐deficit conditions.”
t0“quinoa”
Claim · model-written summary
Hydrogen peroxide reduced ABA concentration by 30% in drought stressed quinoa.
- Taxon
- quinoaChenopodium quinoat0
- Treatment
- H 2 O 2 applicatione0
- Outcome
- Abscisic acid ( ABA ) concentratione0
- Direction
- reducede0
- Value
- 30%e0
- Comparator
- non‐treated stressed plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The H 2 O 2 application regulated the Abscisic acid ( ABA ) concentration under both conditions and reduced it by 30% in drought‐stressed plants as compared to non‐treated stressed plants.”
t0“quinoa”
Claim · model-written summary
Hydrogen peroxide enhanced SOD activity by 32% under drought.
- Taxon
- quinoaChenopodium quinoae0
- Treatment
- exogenous applicatione0
- Gene
- SODe0
- Outcome
- enzymatic antioxidants activitiese0
- Direction
- enhancede0
- Value
- 32%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The exogenous application also enhanced the enzymatic antioxidants activities, including SOD , POD , CAT and APX by 32%, 31%, 34% and 53%, respectively, in quinoa plants under drought stress.”
Claim · model-written summary
Hydrogen peroxide enhanced POD activity by 31% under drought.
- Taxon
- quinoaChenopodium quinoae0
- Treatment
- exogenous applicatione0
- Gene
- PODe0
- Outcome
- enzymatic antioxidants activitiese0
- Direction
- enhancede0
- Value
- 31%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The exogenous application also enhanced the enzymatic antioxidants activities, including SOD , POD , CAT and APX by 32%, 31%, 34% and 53%, respectively, in quinoa plants under drought stress.”
Claim · model-written summary
Hydrogen peroxide enhanced CAT activity by 34% under drought.
- Taxon
- quinoaChenopodium quinoae0
- Treatment
- exogenous applicatione0
- Gene
- CATe0
- Outcome
- enzymatic antioxidants activitiese0
- Direction
- enhancede0
- Value
- 34%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The exogenous application also enhanced the enzymatic antioxidants activities, including SOD , POD , CAT and APX by 32%, 31%, 34% and 53%, respectively, in quinoa plants under drought stress.”
Claim · model-written summary
Hydrogen peroxide enhanced APX activity by 53% under drought.
- Taxon
- quinoaChenopodium quinoae0
- Treatment
- exogenous applicatione0
- Gene
- APXe0
- Outcome
- enzymatic antioxidants activitiese0
- Direction
- enhancede0
- Value
- 53%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The exogenous application also enhanced the enzymatic antioxidants activities, including SOD , POD , CAT and APX by 32%, 31%, 34% and 53%, respectively, in quinoa plants under drought stress.”
The same questions in other papers
hydrogen peroxide · growth · Chenopodium quinoa (quinoa)Results agree
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drought · physiology: oxidative · Chenopodium quinoa (quinoa)Results agree
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See all 6 papers →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.