Abstract
Abscisic acid (ABA) plays an essential role in root hair elongation in plants, but the regulatory mechanism remains to be elucidated. In this study, we found that exogenous ABA can promote rice root hair elongation. Transgenic rice overexpressing SAPK10 (Stress/ABA-activated protein kinase 10) had longer root hairs; rice plants overexpressing OsABIL2 (OsABI-Like 2) had attenuated ABA signaling and shorter root hairs, suggesting that the effect of ABA on root hair elongation depends on the conserved PYR/PP2C/SnRK2 ABA signaling module. Treatment of the DR5-GUS and OsPIN-GUS lines with ABA and an auxin efflux inhibitor showed that ABA-induced root hair elongation depends on polar auxin transport. To examine the transcriptional response to ABA, we divided rice root tips into three regions: short root hair, long root hair and root tip zones; and conducted RNA-seq analysis with or without ABA treatment. Examination of genes involved in auxin transport, biosynthesis and signaling indicated that ABA promotes auxin biosynthesis and polar auxin transport in the root tip, which may lead to auxin accumulation in the long root hair zone. Our findings shed light on how ABA regulates root hair elongation through crosstalk with auxin biosynthesis and transport to orchestrate plant development.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
Exogenous ABA promoted rice root hair elongation.
- Taxon
- rice
Oryza sativae0 - Treatment
- exogenous ABAe0
- Outcome
- rice root hair elongatione0
- Direction
- promotee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous ABA can promote rice root hair elongation”
Claim · model-written summary
SAPK10 overexpression produced longer rice root hairs.
- Taxon
- riceOryza sativae0
- Treatment
- overexpressing SAPK10e0
- Gene
- SAPK10e0
- Outcome
- root hairse0
- Direction
- longere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Transgenic rice overexpressing SAPK10 (Stress/ABA-activated protein kinase 10) had longer root hairs”
Claim · model-written summary
OsABIL2 overexpression attenuated ABA signaling.
- Taxon
- riceOryza sativae0
- Treatment
- overexpressing OsABIL2e0
- Gene
- OsABIL2e0
- Outcome
- ABA signalinge0
- Direction
- attenuatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice plants overexpressing OsABIL2 (OsABI-Like 2) had attenuated ABA signaling and shorter root hairs”
Claim · model-written summary
OsABIL2 overexpression produced shorter rice root hairs.
- Taxon
- riceOryza sativae0
- Treatment
- overexpressing OsABIL2e0
- Gene
- OsABIL2e0
- Outcome
- root hairse0
- Direction
- shortere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice plants overexpressing OsABIL2 (OsABI-Like 2) had attenuated ABA signaling and shorter root hairs”
Claim · model-written summary
ABA induced root hair elongation depended on the PYR/PP2C/SnRK2 signaling module.
- Taxon
- RiceOryza sativat0
- Gene
- PYR/PP2C/SnRK2e0
- Outcome
- root hair elongatione0
- Qualifier
- ABA signaling modulee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effect of ABA on root hair elongation depends on the conserved PYR/PP2C/SnRK2 ABA signaling module”
t0“Rice Root Tips”
Claim · model-written summary
ABA induced root hair elongation depended on polar auxin transport.
- Taxon
- RiceOryza sativat0
- Outcome
- root hair elongatione0
- Qualifier
- polar auxin transporte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ABA-induced root hair elongation depends on polar auxin transport”
t0“Rice Root Tips”
Claim · model-written summary
ABA promoted auxin biosynthesis in the root tip.
- Taxon
- RiceOryza sativat0
- Organ / stage
- root tipe0
- Treatment
- ABAe0
- Outcome
- auxin biosynthesise0
- Direction
- promotese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ABA promotes auxin biosynthesis and polar auxin transport in the root tip”
t0“Rice Root Tips”
Claim · model-written summary
ABA promoted polar auxin transport in the root tip.
- Taxon
- RiceOryza sativat0
- Organ / stage
- root tipe0
- Treatment
- ABAe0
- Outcome
- polar auxin transporte0
- Direction
- promotese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ABA promotes auxin biosynthesis and polar auxin transport in the root tip”
t0“Rice Root Tips”
Claim · model-written summary
ABA-associated biosynthesis and transport may lead to auxin accumulation in the long root hair zone.
- Taxon
- RiceOryza sativat0
- Organ / stage
- long root hair zonee0
- Outcome
- auxin accumulation in the long root hair zonee0
- Qualifier
- may lead toe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“which may lead to auxin accumulation in the long root hair zone”
e1“ABA promotes auxin biosynthesis and polar auxin transport in the root tip”
t0“Rice Root Tips”
The same questions in other papers
(+)-abscisic acid · physiology: hormones · Oryza sativa (rice)Results differ
7 papers in the same direction as this paper · 4 in the opposite direction · 1 reporting no difference from an alternative
- negative
- no effect
- negative
9 papers more in this group
See all 13 papers →(+)-abscisic acid · growth · Oryza sativa (rice)Results differ
47 papers in the same direction as this paper · 21 in the opposite direction
- negative
- negative
- negative
65 papers more in this group
See all 69 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.