Abstract
Abstract Weedy rice ( Oryza spp.) is widely recognised as a major constraint in cultivated rice systems globally. Seed shattering is related to the invasiveness and persistence of weedy ecotypes in field and exacerbates control of weedy rice in cultivated rice systems. Shattering traits are controlled genetically and by different environmental conditions. At present, a rapidly changing environment, including rising levels of atmospheric carbon dioxide, could alter shattering frequency, with subsequent effects on weed seed input and competition. The study aimed to evaluate the interaction between weedy rice seed shattering and transcriptional seed shattering‐regulation genes as affected by weedy rice genotypes and atmospheric CO 2 concentrations. We examined seven biotypes and two levels of atmospheric [CO 2 ]: ambient { a [CO 2 ]} and enhanced { e [CO 2 ]} concentrations of 400 and 700 μmol mol −1 respectively. Our results indicate that e [CO 2 ] increases weedy rice seed shattering. The gene expression analysis demonstrates that in most genotypes the e [CO 2 ] increased the expression of all shattering‐related genes ( OsCPL1 , qSH1 , Sh4 , SHAT1 , OsXTH8 , OSH15 and SH5 ). Atmospheric [CO 2 ] greatly affects seed shattering in weedy rice and has a minor effect on cultivated rice, by modulation of seed shattering‐related gene expression. Weedy rice genotypes had the highest upregulation of these genes.
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Claims 10
Claim · model-written summary
Enhanced CO2 increases weedy rice seed shattering.
- Taxon
- Oryza sativa
Oryza sativat0 - Treatment
- e [CO 2 ]e0
- Outcome
- weedy rice seed shatteringe0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Our results indicate that e [CO 2 ] increases weedy rice seed shattering.”
t0“Oryza sativa”
Claim · model-written summary
Enhanced CO2 increased OsCPL1 expression in most genotypes.
- Taxon
- Oryza sativaOryza sativat0
- Treatment
- e [CO 2 ]e0
- Gene
- OsCPL1e0
- Outcome
- expression of all shattering‐related genese0
- Direction
- increasede0
- Qualifier
- in most genotypese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The gene expression analysis demonstrates that in most genotypes the e [CO 2 ] increased the expression of all shattering‐related genes ( OsCPL1 , qSH1 , Sh4 , SHAT1 , OsXTH8 , OSH15 and SH5 ).”
t0“Oryza sativa”
Claim · model-written summary
Enhanced CO2 increased qSH1 expression in most genotypes.
- Taxon
- Oryza sativaOryza sativat0
- Treatment
- e [CO 2 ]e0
- Gene
- qSH1e0
- Outcome
- expression of all shattering‐related genese0
- Direction
- increasede0
- Qualifier
- in most genotypese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The gene expression analysis demonstrates that in most genotypes the e [CO 2 ] increased the expression of all shattering‐related genes ( OsCPL1 , qSH1 , Sh4 , SHAT1 , OsXTH8 , OSH15 and SH5 ).”
t0“Oryza sativa”
Claim · model-written summary
Enhanced CO2 increased Sh4 expression in most genotypes.
- Taxon
- Oryza sativaOryza sativat0
- Treatment
- e [CO 2 ]e0
- Gene
- Sh4e0
- Outcome
- expression of all shattering‐related genese0
- Direction
- increasede0
- Qualifier
- in most genotypese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The gene expression analysis demonstrates that in most genotypes the e [CO 2 ] increased the expression of all shattering‐related genes ( OsCPL1 , qSH1 , Sh4 , SHAT1 , OsXTH8 , OSH15 and SH5 ).”
t0“Oryza sativa”
Claim · model-written summary
Enhanced CO2 increased SHAT1 expression in most genotypes.
- Taxon
- Oryza sativaOryza sativat0
- Treatment
- e [CO 2 ]e0
- Gene
- SHAT1e0
- Outcome
- expression of all shattering‐related genese0
- Direction
- increasede0
- Qualifier
- in most genotypese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The gene expression analysis demonstrates that in most genotypes the e [CO 2 ] increased the expression of all shattering‐related genes ( OsCPL1 , qSH1 , Sh4 , SHAT1 , OsXTH8 , OSH15 and SH5 ).”
t0“Oryza sativa”
Claim · model-written summary
Enhanced CO2 increased OsXTH8 expression in most genotypes.
- Taxon
- Oryza sativaOryza sativat0
- Treatment
- e [CO 2 ]e0
- Gene
- OsXTH8e0
- Outcome
- expression of all shattering‐related genese0
- Direction
- increasede0
- Qualifier
- in most genotypese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The gene expression analysis demonstrates that in most genotypes the e [CO 2 ] increased the expression of all shattering‐related genes ( OsCPL1 , qSH1 , Sh4 , SHAT1 , OsXTH8 , OSH15 and SH5 ).”
t0“Oryza sativa”
Claim · model-written summary
Enhanced CO2 increased OSH15 expression in most genotypes.
- Taxon
- Oryza sativaOryza sativat0
- Treatment
- e [CO 2 ]e0
- Gene
- OSH15e0
- Outcome
- expression of all shattering‐related genese0
- Direction
- increasede0
- Qualifier
- in most genotypese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The gene expression analysis demonstrates that in most genotypes the e [CO 2 ] increased the expression of all shattering‐related genes ( OsCPL1 , qSH1 , Sh4 , SHAT1 , OsXTH8 , OSH15 and SH5 ).”
t0“Oryza sativa”
Claim · model-written summary
Enhanced CO2 increased SH5 expression in most genotypes.
- Taxon
- Oryza sativaOryza sativat0
- Treatment
- e [CO 2 ]e0
- Gene
- SH5e0
- Outcome
- expression of all shattering‐related genese0
- Direction
- increasede0
- Qualifier
- in most genotypese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The gene expression analysis demonstrates that in most genotypes the e [CO 2 ] increased the expression of all shattering‐related genes ( OsCPL1 , qSH1 , Sh4 , SHAT1 , OsXTH8 , OSH15 and SH5 ).”
t0“Oryza sativa”
Claim · model-written summary
Atmospheric CO2 has a minor effect on seed shattering in cultivated rice.
- Taxon
- Oryza sativaOryza sativat0
- Treatment
- Atmospheric [CO 2 ]e0
- Outcome
- seed shatteringe0
- Direction
- minor effecte0
- Qualifier
- cultivated ricee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Atmospheric [CO 2 ] greatly affects seed shattering in weedy rice and has a minor effect on cultivated rice, by modulation of seed shattering‐related gene expression.”
t0“Oryza sativa”
Claim · model-written summary
Weedy rice genotypes showed the highest upregulation of the shattering genes.
- Taxon
- Oryza sativaOryza sativat0
- Outcome
- upregulation of these genese0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weedy rice genotypes had the highest upregulation of these genes.”
t0“Oryza sativa”
The same questions in other papers
co2 · organism · Oryza sativa (rice)Positive and negative results
1 paper in the same direction as this paper · 7 in the opposite direction
- positive
- positive
- positive
5 papers more in this group
See all 9 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.