Abstract
Nitrate is a major nitrogen resource for plant growth and development and acts as both a crucial nutrient and a signaling molecule for plants; hence, understanding nitrate signaling is important for crop production. Abscisic acid (ABA) has been demonstrated to be involved in nitrate signaling, but the underlying mechanism is largely unknown in apple. In this study, we found that exogenous ABA inhibited the transport of nitrate from roots to shoots in apple, and the transcription of the nitrate transporter MdNRT1.5/MdNPF7.3 was noticeably reduced at the transcriptional level by ABA, which inhibited the transport of nitrate from roots to shoots. Then, it was found that the ABA-responsive transcription factor MdABI5 bound directly to the ABRE recognition site of the MdNRT1.5 promoter and suppressed its expression. Overexpression of MdABI5 inhibited ABA-mediated transport of nitrate from roots to shoots. Overall, these results demonstrate that MdABI5 regulates the transport of nitrate from roots to shoots partially by mediating the expression of MdNRT1.5, illuminating the molecular mechanism by which ABA regulates nitrate transport in apple.
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Claims 5
Claim · model-written summary
Exogenous ABA inhibited root-to-shoot nitrate transport in apple.
- Taxon
- apple
Malus domesticae0 - Treatment
- exogenous ABAe0
- Outcome
- transport of nitrate from roots to shootse0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous ABA inhibited the transport of nitrate from roots to shoots in apple”
Claim · model-written summary
ABA reduced transcription of nitrate transporter MdNRT1.5/MdNPF7.3.
- Taxon
- appleMalus domesticat0
- Treatment
- ABAe0
- Gene
- MdNRT1.5/MdNPF7.3e0
- Outcome
- transcription of the nitrate transporter MdNRT1.5/MdNPF7.3e0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the transcription of the nitrate transporter MdNRT1.5/MdNPF7.3 was noticeably reduced at the transcriptional level by ABA”
t0“apple”
Claim · model-written summary
MdABI5 bound the ABRE site of the MdNRT1.5 promoter.
- Taxon
- appleMalus domesticat0
- Gene
- MdABI5e0
- Outcome
- bound directly to the ABRE recognition site of the MdNRT1.5 promotere0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the ABA-responsive transcription factor MdABI5 bound directly to the ABRE recognition site of the MdNRT1.5 promoter”
t0“apple”
Claim · model-written summary
MdABI5 suppressed MdNRT1.5 expression.
- Taxon
- appleMalus domesticat0
- Gene
- MdABI5e0
- Outcome
- suppressed its expressione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the ABA-responsive transcription factor MdABI5 bound directly to the ABRE recognition site of the MdNRT1.5 promoter and suppressed its expression”
t0“apple”
Claim · model-written summary
MdABI5 overexpression inhibited ABA-mediated root-to-shoot nitrate transport.
- Taxon
- appleMalus domesticat0
- Treatment
- Overexpression of MdABI5e0
- Gene
- MdABI5e0
- Outcome
- transport of nitrate from roots to shootse0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Overexpression of MdABI5 inhibited ABA-mediated transport of nitrate from roots to shoots.”
t0“apple”
The same questions in other papers
(+)-abscisic acid · nutrient: content · Malus domestica (apple)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- no effect
(+)-abscisic acid · molecular: expression · Malus domestica (apple)Positive and negative results
1 paper in the same direction as this paper · 4 in the opposite direction
- positive
- positive
- positive
2 papers more in this group
See all 6 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.