Abstract
High CO2 and high temperature have an antagonistic interaction effect on rice yield potential and present a unique challenge to adapting rice to projected future climates. Understanding how the differences in response to these two abiotic variables are partitioned across rice germplasm accessions may be key to identifying potentially useful sources of resilient alleles for adapting rice to climate change. In this study, we evaluated eleven globally diverse rice accessions under controlled conditions at two carbon dioxide concentrations (400 and 600 ppm) and four temperature environments (29 °C day/21 °C night; 29 °C day/21 °C night with additional heat stress at anthesis; 34 °C day/26 °C night; and 34 °C day/26 °C night with additional heat stress at anthesis) for a suite of traits including five yield components, five growth characteristics, one phenological trait, and four photosynthesis-related measurements. Multivariate analyses of mean trait data from these eight treatments divide our rice panel into two primary groups consistent with the genetic classification of INDICA/INDICA-like and JAPONICA populations. Overall, we find that the productivity of plants grown under elevated [CO2 ] was more sensitive (negative response) to high temperature stress compared with that of plants grown under ambient [CO2 ] across this diversity panel. We report differential response to CO2 × temperature interaction for INDICA/INDICA-like and JAPONICA rice accessions and find preliminary evidence for the beneficial introduction of exotic alleles into cultivated rice genomic background. Overall, these results support the idea of using wild or currently unadapted gene pools in rice to enhance breeding efforts to secure future climate change adaptation.
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Claims 5
Claim · model-written summary
Multivariate analyses divided the rice panel into two primary groups consistent with INDICA/INDICA-like and JAPONICA classification.
- Taxon
- rice
Oryza sativae1 - Material
- INDICA/INDICA-like and JAPONICA populationse1
- Outcome
- two primary groupse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Multivariate analyses of mean trait data from these eight treatments divide our rice panel into two primary groups consistent with the genetic classification of INDICA/INDICA-like and JAPONICA populations”
Claim · model-written summary
Productivity under elevated CO2 was more sensitive, a negative response, to high temperature stress than under ambient CO2.
- Taxon
- riceOryza sativat0
- Treatment
- high temperature stresse2
- Outcome
- productivitye2
- Direction
- negative responsee2
- Qualifier
- elevated [CO2 ]e2
- Comparator
- ambient [CO2 ]e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Evidence for divergence of response in Indica, Japonica, and wild rice to high CO2 × temperature interaction”
e2“the productivity of plants grown under elevated [CO2 ] was more sensitive (negative response) to high temperature stress compared with that of plants grown under ambient [CO2 ] across this diversity panel”
Claim · model-written summary
Rice accessions of the INDICA/INDICA-like and JAPONICA groups differed in their response to the CO2 x temperature interaction.
- Taxon
- riceOryza sativat0
- Material
- INDICA/INDICA-like and JAPONICAe3
- Outcome
- differential response to CO2 × temperature interactione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Evidence for divergence of response in Indica, Japonica, and wild rice to high CO2 × temperature interaction”
e3“We report differential response to CO2 × temperature interaction for INDICA/INDICA-like and JAPONICA rice accessions”
Claim · model-written summary
Preliminary evidence suggests beneficial introduction of exotic alleles into the cultivated rice genomic background.
- Taxon
- riceOryza sativat0
- Outcome
- beneficial introduction of exotic alleles into cultivated rice genomic backgrounde4
- Qualifier
- preliminary evidencee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Evidence for divergence of response in Indica, Japonica, and wild rice to high CO2 × temperature interaction”
e4“find preliminary evidence for the beneficial introduction of exotic alleles into cultivated rice genomic background”
Claim · model-written summary
Wild or currently unadapted rice gene pools should be used to enhance breeding for climate change adaptation.
- Taxon
- riceOryza sativae5
- Outcome
- using wild or currently unadapted gene pools in rice to enhance breeding effortse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Evidence for divergence of response in Indica, Japonica, and wild rice to high CO2 × temperature interaction”
e5“these results support the idea of using wild or currently unadapted gene pools in rice to enhance breeding efforts to secure future climate change adaptation”
The same questions in other papers
heat · yield · Oryza sativa (rice)Positive and negative results
158 papers in the same direction as this paper · 36 in the opposite direction
- positive
- negative
- negative
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