Abstract
Harnessing cold-resilient and calcium-enriched peanut production technology are crucial for high-yielding peanut cultivation in high-latitude areas. However, there is limited field data about how exogenous calcium (Ca 2+ ) application would improve peanut growth resilience during exposure to chilling stress at early sowing (ES). To help address this problem, a two-year field study was conducted to assess the effects of exogenous foliar Ca 2+ application on photosynthetic carbon fixation and pod yield in peanuts under different sowing scenarios. We measured plant growth indexes, leaf photosynthetic gas exchange, photosystems activities, and yield in peanuts. It was indicated that ES chilling stress at the peanut seedling stage led to the reduction of Pn, g s , Tr, Ls, WUE, respectively, and the excessive accumulation of non-structural carbohydrates in leaves, which eventually induced a chilling-dependent feedback inhibition of photosynthesis due mainly to weaken growth/sink demand. While exogenous Ca 2+ foliar application improved the export of nonstructural carbohydrates, and photosynthetic capacity, meanwhile activated cyclic electron flow, thereby enhancing growth and biomass accumulation in peanut seedlings undergoing ES chilling stress. Furthermore, ES combined with exogenous Ca 2+ application can significantly enhance plant chilling resistance and peanut yield ultimately in the field. In summary, the above results demonstrated that exogenous foliar Ca 2+ application restored the ES-linked feedback inhibition of photosynthesis, enhancing the growth/sink demand and the yield of peanuts.
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Claims 9
Claim · model-written summary
Early-sowing chilling stress at the seedling stage reduced net photosynthesis, stomatal conductance and transpiration in peanut.
- Taxon
- peanut
Arachis hypogaeae1 - Treatment
- ES chilling stresse1
- Outcome
- Pn, g s , Tre1
- Direction
- reductione1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“ES chilling stress at the peanut seedling stage led to the reduction of Pn, g s , Tr, Ls, WUE”
Claim · model-written summary
Early-sowing chilling stress at the seedling stage reduced leaf stomatal limitation (Ls) and water use efficiency (WUE) in peanut.
- Taxon
- peanutArachis hypogaeae1
- Treatment
- ES chilling stresse1
- Outcome
- Ls, WUEe1
- Direction
- reductione1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“ES chilling stress at the peanut seedling stage led to the reduction of Pn, g s , Tr, Ls, WUE”
Claim · model-written summary
Excessive accumulation of non-structural carbohydrates in leaves induced a chilling-dependent feedback inhibition of photosynthesis in peanut.
- Taxon
- peanutArachis hypogaeae1
- Compound
- non-structural carbohydratese2
- Outcome
- feedback inhibition of photosynthesise2
- Qualifier
- chilling-dependente2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“ES chilling stress at the peanut seedling stage led to the reduction of Pn, g s , Tr, Ls, WUE”
e2“the excessive accumulation of non-structural carbohydrates in leaves, which eventually induced a chilling-dependent feedback inhibition of photosynthesis due mainly to weaken growth/sink demand”
Claim · model-written summary
Foliar exogenous Ca2+ improved the export of nonstructural carbohydrates in peanut seedlings under early-sowing chilling stress.
- Taxon
- peanutArachis hypogaeae4
- Treatment
- exogenous Ca 2+ foliar applicatione4
- Outcome
- export of nonstructural carbohydratese4
- Direction
- improvede4
- Qualifier
- undergoing ES chilling stresse4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“While exogenous Ca 2+ foliar application improved the export of nonstructural carbohydrates, and photosynthetic capacity, meanwhile activated cyclic electron flow, thereby enhancing growth and biomass accumulation in peanut seedlings undergoing ES chilling stress”
Claim · model-written summary
Foliar exogenous Ca2+ improved photosynthetic capacity of peanut seedlings under early-sowing chilling stress.
- Taxon
- peanutArachis hypogaeae4
- Treatment
- exogenous Ca 2+ foliar applicatione4
- Outcome
- photosynthetic capacitye4
- Direction
- improvede4
- Qualifier
- undergoing ES chilling stresse4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“While exogenous Ca 2+ foliar application improved the export of nonstructural carbohydrates, and photosynthetic capacity, meanwhile activated cyclic electron flow, thereby enhancing growth and biomass accumulation in peanut seedlings undergoing ES chilling stress”
Claim · model-written summary
Foliar exogenous Ca2+ activated cyclic electron flow in peanut seedlings under early-sowing chilling stress.
- Taxon
- peanutArachis hypogaeae4
- Treatment
- exogenous Ca 2+ foliar applicatione4
- Outcome
- cyclic electron flowe4
- Direction
- activatede4
- Qualifier
- undergoing ES chilling stresse4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“While exogenous Ca 2+ foliar application improved the export of nonstructural carbohydrates, and photosynthetic capacity, meanwhile activated cyclic electron flow, thereby enhancing growth and biomass accumulation in peanut seedlings undergoing ES chilling stress”
Claim · model-written summary
Foliar exogenous Ca2+ enhanced growth and biomass accumulation of peanut seedlings under early-sowing chilling stress.
- Taxon
- peanutArachis hypogaeae4
- Treatment
- exogenous Ca 2+ foliar applicatione4
- Outcome
- growth and biomass accumulatione4
- Direction
- enhancinge4
- Qualifier
- undergoing ES chilling stresse4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“While exogenous Ca 2+ foliar application improved the export of nonstructural carbohydrates, and photosynthetic capacity, meanwhile activated cyclic electron flow, thereby enhancing growth and biomass accumulation in peanut seedlings undergoing ES chilling stress”
Claim · model-written summary
Early sowing combined with exogenous Ca2+ significantly enhanced chilling resistance of peanut plants in the field.
- Taxon
- peanutArachis hypogaeae5
- Treatment
- ES combined with exogenous Ca 2+ applicatione5
- Outcome
- plant chilling resistancee5
- Direction
- enhancee5
- Setting
- in the fielde5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“ES combined with exogenous Ca 2+ application can significantly enhance plant chilling resistance and peanut yield ultimately in the field”
Claim · model-written summary
Early sowing combined with exogenous Ca2+ enhanced peanut yield in the field.
- Taxon
- peanutArachis hypogaeae5
- Treatment
- ES combined with exogenous Ca 2+ applicatione5
- Outcome
- peanut yielde5
- Direction
- enhancee5
- Setting
- in the fielde5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“ES combined with exogenous Ca 2+ application can significantly enhance plant chilling resistance and peanut yield ultimately in the field”
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See all 20 papers →8 of 11 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.