Abstract
Phosphate (Pi) is indispensable for the growth and development of plant, and low-Pi stress is a major limitation for crop growth and yield worldwide. The tolerance to low-Pi stress varied among rice germplasm resources. However, the mechanisms underlying the tolerance of rice to low-Pi stress, as a complex quantitative trait, are not clear. We performed a genome-wide association study (GWAS) through a diverse worldwide collection of 191 rice accessions in the field under normal-Pi and low-Pi supply in two years. Twenty and three significant association loci were identified for biomass and grain yield per plant under low-Pi supply respectively. The expression level of OsAAD as a candidate gene from a associated locus was significantly up-regulated after low-Pi stress treatment for five days and tended to return to normal levels after Pi re-supply in shoots. Suppression of OsAAD expression could improve the physiological phosphorus use efficiency (PPUE) and grain yields through affecting the expression of several genes associated with GA biosynthesis and metabolism. OsAAD would be a promising gene for increasing PPUE and grain yield in rice under normal- and low-Pi supply via genome editing.
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Claims 9
Claim · model-written summary
Rice accessions varied in tolerance to low phosphate.
- Taxon
- rice
Oryza sativae0 - Material
- rice germplasm resourcese0
- Outcome
- tolerance to low-Pi stresse0
- Direction
- variede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The tolerance to low-Pi stress varied among rice germplasm resources”
Claim · model-written summary
Twenty loci associated with biomass under low phosphate.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Twenty and three significant association loci were identified for biomass and grain yield per plant under low-Pi supply respectively”
t0“rice”
Claim · model-written summary
Three loci associated with grain yield under low phosphate.
- Taxon
- riceOryza sativat0
- Treatment
- low-Pi supplye0
- Gene
- association locie0
- Outcome
- grain yield per plante0
- Value
- threee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Twenty and three significant association loci were identified for biomass and grain yield per plant under low-Pi supply respectively”
t0“rice”
Claim · model-written summary
Low phosphate significantly raised shoot OsAAD expression after five days.
- Taxon
- riceOryza sativat0
- Treatment
- low-Pi stress treatmente0
- Gene
- OsAADe0
- Outcome
- expression level of OsAADe0
- Direction
- up-regulatede0
- Qualifier
- for five dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The expression level of OsAAD as a candidate gene from a associated locus was significantly up-regulated after low-Pi stress treatment for five days”
t0“rice”
Claim · model-written summary
OsAAD expression tended to return to normal after phosphate resupply.
- Taxon
- riceOryza sativat0
- Organ / stage
- shootse0
- Treatment
- Pi re-supplye0
- Gene
- OsAADt1
- Outcome
- expression levelt1
- Direction
- return to normal levelse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tended to return to normal levels after Pi re-supply in shoots”
t0“rice”
t1“The expression level of OsAAD”
Claim · model-written summary
Suppressing OsAAD improved physiological phosphorus use efficiency.
- Taxon
- riceOryza sativat0
- Treatment
- Suppression of OsAAD expressione0
- Gene
- OsAADe0
- Outcome
- physiological phosphorus use efficiency (PPUE)e0
- Direction
- improvee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Suppression of OsAAD expression could improve the physiological phosphorus use efficiency (PPUE) and grain yields”
t0“rice”
Claim · model-written summary
Suppressing OsAAD improved grain yields.
- Taxon
- riceOryza sativat0
- Treatment
- Suppression of OsAAD expressione0
- Gene
- OsAADe0
- Outcome
- grain yieldse0
- Direction
- improvee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Suppression of OsAAD expression could improve the physiological phosphorus use efficiency (PPUE) and grain yields”
t0“rice”
Claim · model-written summary
OsAAD suppression affects expression of GA biosynthesis and metabolism genes.
- Taxon
- riceOryza sativat0
- Gene
- several genes associated with GA biosynthesis and metabolisme0
- Outcome
- expressione0
- Qualifier
- GA biosynthesis and metabolisme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“through affecting the expression of several genes associated with GA biosynthesis and metabolism”
t0“rice”
Claim · model-written summary
The authors propose OsAAD editing to increase PPUE and yield.
- Taxon
- riceOryza sativae0
- Treatment
- genome editinge0
- Gene
- OsAADe0
- Outcome
- increasing PPUE and grain yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“OsAAD would be a promising gene for increasing PPUE and grain yield in rice under normal- and low-Pi supply via genome editing”
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See all 134 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.