Abstract
Introduction Light use efficiency (LUE) is a crucial determinant of plant productivity, while leaf functional traits directly affect ecosystem functions. However, it remains unclear how climate warming affects LUE and leaf functional traits of dominant species in alpine meadows. Methods We conducted a 4-year in-situ field warming experiment to investigate the eco-physiological characteristics for a dominant species ( Elymus nutans ) and a common species ( Potentilla anserina ) on the Tibetan Plateau. The leaf traits, photosynthesis and fluorescence characteristics were measured, along with the soil physical-chemical properties associated with the two species. Results and discussions Experimental warming increased the leaf LUE, maximum photochemical efficiency, non-photochemical quenching, relative water content and specific leaf area for both species. However, there was a decrease in leaf and soil element content. Different species exhibit varying adaptability to warming. Increasing temperature significantly increased the photosynthetic rate, stomatal conductance, transpiration rate, total water content, and specific leaf volume of E. nutans ; however, all these traits exhibited an opposite trend in P. anserina . Warming has a direct negative impact on leaf LUE and an indirectly enhances LUE through its effects on leaf traits. The impact of warming on plant photosynthetic capacity is primarily mediated by soil nutrients and leaf traits. These results indicate that the two different species employ distinct adaptive strategies in response to climate change, which are related to their species-specific variations. Such changes can confer an adaptive advantage for plant to cope with environmental change and potentially lead to alterations to ecosystem structure and functioning.
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Claims 13
Claim · model-written summary
Warming increased leaf LUE, maximum photochemical efficiency and non-photochemical quenching in Elymus nutans.
- Taxon
- Elymus nutansCampeiostachys nutanse2
- Treatment
- Experimental warminge1
- Outcome
- leaf LUE, maximum photochemical efficiency, non-photochemical quenchinge1
- Direction
- increasede1
Not reportedComparator
Verbatim
e1“Experimental warming increased the leaf LUE, maximum photochemical efficiency, non-photochemical quenching, relative water content and specific leaf area for both species”
e2“a dominant species ( Elymus nutans ) and a common species ( Potentilla anserina )”
Claim · model-written summary
Warming increased leaf LUE, maximum photochemical efficiency and non-photochemical quenching in Potentilla anserina.
- Taxon
- Potentilla anserina
Argentina anserinae2 - Treatment
- Experimental warminge1
- Outcome
- leaf LUE, maximum photochemical efficiency, non-photochemical quenchinge1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Experimental warming increased the leaf LUE, maximum photochemical efficiency, non-photochemical quenching, relative water content and specific leaf area for both species”
e2“a dominant species ( Elymus nutans ) and a common species ( Potentilla anserina )”
Claim · model-written summary
Warming increased relative water content and specific leaf area in Elymus nutans.
- Taxon
- Elymus nutansCampeiostachys nutanse2
- Treatment
- Experimental warminge1
- Outcome
- relative water content and specific leaf areae1
- Direction
- increasede1
Not reportedComparator
Verbatim
e1“Experimental warming increased the leaf LUE, maximum photochemical efficiency, non-photochemical quenching, relative water content and specific leaf area for both species”
e2“a dominant species ( Elymus nutans ) and a common species ( Potentilla anserina )”
Claim · model-written summary
Warming increased relative water content and specific leaf area in Potentilla anserina.
- Taxon
- Potentilla anserinaArgentina anserinae2
- Treatment
- Experimental warminge1
- Outcome
- relative water content and specific leaf areae1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Experimental warming increased the leaf LUE, maximum photochemical efficiency, non-photochemical quenching, relative water content and specific leaf area for both species”
e2“a dominant species ( Elymus nutans ) and a common species ( Potentilla anserina )”
Claim · model-written summary
Warming decreased leaf and soil element content.
Not reportedTaxon
Verbatim
e1“Experimental warming increased the leaf LUE, maximum photochemical efficiency, non-photochemical quenching, relative water content and specific leaf area for both species”
e2“However, there was a decrease in leaf and soil element content”
Claim · model-written summary
Increasing temperature significantly increased photosynthetic rate, stomatal conductance and transpiration rate in Elymus nutans.
- Taxon
- E. nutansCampeiostachys nutanse1
- Treatment
- Increasing temperaturee1
- Outcome
- photosynthetic rate, stomatal conductance, transpiration ratee1
- Direction
- increasede1
Not reportedComparator
Verbatim
e1“Increasing temperature significantly increased the photosynthetic rate, stomatal conductance, transpiration rate, total water content, and specific leaf volume of E. nutans”
Claim · model-written summary
Increasing temperature significantly increased total water content and specific leaf volume in Elymus nutans.
- Taxon
- E. nutansCampeiostachys nutanse1
- Treatment
- Increasing temperaturee1
- Outcome
- total water content, and specific leaf volumee1
- Direction
- increasede1
Not reportedComparator
Verbatim
e1“Increasing temperature significantly increased the photosynthetic rate, stomatal conductance, transpiration rate, total water content, and specific leaf volume of E. nutans”
Claim · model-written summary
Potentilla anserina showed an opposite trend, a decrease, in photosynthetic rate, stomatal conductance and transpiration rate under warming.
- Taxon
- P. anserinaArgentina anserinae2
- Treatment
- Increasing temperaturee1
- Outcome
- photosynthetic rate, stomatal conductance, transpiration ratee1
- Direction
- decreaseinferrede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Increasing temperature significantly increased the photosynthetic rate, stomatal conductance, transpiration rate, total water content, and specific leaf volume of E. nutans”
e2“all these traits exhibited an opposite trend in P. anserina”
Claim · model-written summary
Potentilla anserina showed an opposite trend, a decrease, in total water content and specific leaf volume under warming.
- Taxon
- P. anserinaArgentina anserinae2
- Treatment
- Increasing temperaturee1
- Outcome
- total water content, and specific leaf volumee1
- Direction
- decreaseinferrede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Increasing temperature significantly increased the photosynthetic rate, stomatal conductance, transpiration rate, total water content, and specific leaf volume of E. nutans”
e2“all these traits exhibited an opposite trend in P. anserina”
Claim · model-written summary
Warming has a direct negative effect on leaf LUE in Elymus nutans but indirectly enhances it through leaf traits.
- Taxon
- Elymus nutansCampeiostachys nutanse2
- Treatment
- Warminge1
- Outcome
- leaf LUEe1
- Qualifier
- through its effects on leaf traitse1
Verbatim
e1“Warming has a direct negative impact on leaf LUE and an indirectly enhances LUE through its effects on leaf traits”
e2“a dominant species ( Elymus nutans ) and a common species ( Potentilla anserina )”
Claim · model-written summary
Warming has a direct negative effect on leaf LUE in Potentilla anserina but indirectly enhances it through leaf traits.
- Taxon
- Potentilla anserinaArgentina anserinae2
- Treatment
- Warminge1
- Outcome
- leaf LUEe1
- Qualifier
- through its effects on leaf traitse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Warming has a direct negative impact on leaf LUE and an indirectly enhances LUE through its effects on leaf traits”
e2“a dominant species ( Elymus nutans ) and a common species ( Potentilla anserina )”
Claim · model-written summary
Warming effect on photosynthetic capacity in Elymus nutans is mediated by soil nutrients and leaf traits.
- Taxon
- Elymus nutansCampeiostachys nutanse2
- Treatment
- warminge1
- Outcome
- photosynthetic capacitye1
- Qualifier
- mediated by soil nutrients and leaf traitse1
Verbatim
e1“The impact of warming on plant photosynthetic capacity is primarily mediated by soil nutrients and leaf traits”
e2“a dominant species ( Elymus nutans ) and a common species ( Potentilla anserina )”
Claim · model-written summary
Warming effect on photosynthetic capacity in Potentilla anserina is mediated by soil nutrients and leaf traits.
- Taxon
- Potentilla anserinaArgentina anserinae2
- Treatment
- warminge1
- Outcome
- photosynthetic capacitye1
- Qualifier
- mediated by soil nutrients and leaf traitse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The impact of warming on plant photosynthetic capacity is primarily mediated by soil nutrients and leaf traits”
e2“a dominant species ( Elymus nutans ) and a common species ( Potentilla anserina )”
The same questions in other papers
heat · physiology: photosynthesis · Argentina anserina (silverweed cinquefoil)Positive and negative results
1 in the opposite direction
- negative
heat · physiology: photosynthesis · Campeiostachys nutansResults agree
1 paper in the same direction as this paper
- positive
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.