Abstract
Seed germination, one of the most important stages in a plant’s life cycle, can be affected by abiotic stresses, such as salinity. The plant hormone abscisic acid (ABA) and high concentrations of glucose are also known to inhibit germination. In contrast, nitrate is known to stimulate germination in many plants. However, this stimulatory effect has not yet been investigated in the presence of inhibitory effects caused by abiotic stresses, ABA, and glucose. In this study, we show that nitrate can alleviate the inhibitory effects of sodium chloride (NaCl) or high concentrations of glucose on seed germination in Arabidopsis, while it was not able to promote germination that was inhibited by exogenous ABA and mannitol (an inducer of osmotic stress). An analysis of the gene expression involved in the regulation of germination showed that GA20ox1, encoding the gibberellin (GA) synthesis enzyme, SPATULA (SPT), encoding a bHLH transcription factor, and CYP707A2, encoding an ABA catabolic enzyme, were significantly upregulated by the addition of KNO3 in the presence of NaCl or glucose. Our results suggest the possibility that these genes are involved in the nitrate-mediated control of seed germination in the presence of NaCl or glucose.
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Claims 7
Claim · model-written summary
Nitrate alleviated NaCl inhibition of Arabidopsis seed germination.
- Taxon
- Arabidopsis
Arabidopsise0 - Treatment
- nitratee0
- Outcome
- seed germinatione0
- Direction
- alleviatee0
- Qualifier
- sodium chloride (NaCl)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nitrate can alleviate the inhibitory effects of sodium chloride (NaCl) or high concentrations of glucose on seed germination in Arabidopsis”
Claim · model-written summary
Nitrate alleviated high-glucose inhibition of Arabidopsis seed germination.
- Taxon
- ArabidopsisArabidopsise0
- Treatment
- nitratee0
- Outcome
- seed germinatione0
- Direction
- alleviatee0
- Qualifier
- high concentrations of glucosee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nitrate can alleviate the inhibitory effects of sodium chloride (NaCl) or high concentrations of glucose on seed germination in Arabidopsis”
Claim · model-written summary
Nitrate did not promote germination inhibited by exogenous ABA.
- Taxon
- ArabidopsisArabidopsist1
- Outcome
- germinatione0
- Direction
- not able to promotee0
- Qualifier
- exogenous ABAe0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it was not able to promote germination that was inhibited by exogenous ABA and mannitol”
t0“Germination Under Inhibition by NaCl or High Concentration of Glucose”
t1“Arabidopsis”
Claim · model-written summary
Nitrate did not promote germination inhibited by mannitol.
- Taxon
- ArabidopsisArabidopsist0
- Outcome
- germinatione0
- Direction
- not able to promotee0
- Qualifier
- mannitole0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it was not able to promote germination that was inhibited by exogenous ABA and mannitol”
t0“Arabidopsis”
Claim · model-written summary
KNO3 significantly upregulated GA20ox1 under NaCl or glucose.
- Taxon
- ArabidopsisArabidopsist0
- Treatment
- addition of KNO3e0
- Gene
- GA20ox1e0
- Outcome
- GA20ox1e0
- Direction
- upregulatede0
- Qualifier
- in the presence of NaCl or glucosee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GA20ox1, encoding the gibberellin (GA) synthesis enzyme, SPATULA (SPT), encoding a bHLH transcription factor, and CYP707A2, encoding an ABA catabolic enzyme, were significantly upregulated by the addition of KNO3 in the presence of NaCl or glucose”
t0“Arabidopsis”
Claim · model-written summary
KNO3 significantly upregulated SPATULA under NaCl or glucose.
- Taxon
- ArabidopsisArabidopsist0
- Treatment
- addition of KNO3e0
- Gene
- SPATULA (SPT)e0
- Outcome
- SPATULA (SPT)e0
- Direction
- upregulatede0
- Qualifier
- in the presence of NaCl or glucosee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GA20ox1, encoding the gibberellin (GA) synthesis enzyme, SPATULA (SPT), encoding a bHLH transcription factor, and CYP707A2, encoding an ABA catabolic enzyme, were significantly upregulated by the addition of KNO3 in the presence of NaCl or glucose”
t0“Arabidopsis”
Claim · model-written summary
KNO3 significantly upregulated CYP707A2 under NaCl or glucose.
- Taxon
- ArabidopsisArabidopsist0
- Treatment
- addition of KNO3e0
- Gene
- CYP707A2e0
- Outcome
- CYP707A2e0
- Direction
- upregulatede0
- Qualifier
- in the presence of NaCl or glucosee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GA20ox1, encoding the gibberellin (GA) synthesis enzyme, SPATULA (SPT), encoding a bHLH transcription factor, and CYP707A2, encoding an ABA catabolic enzyme, were significantly upregulated by the addition of KNO3 in the presence of NaCl or glucose”
t0“Arabidopsis”
The same questions in other papers
nitrogen · growth · ArabidopsisPositive and negative results
8 papers in the same direction as this paper · 13 in the opposite direction
- positive
- no effect
- negative
18 papers more in this group
See all 22 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.