Abstract
NAC transcription factors (TF) play important roles in regulating osmotic stress tolerance in plants. We tested the expression of 57 NAC genes in the presence of NaCl in young leaves of two elite rice cultivars, Cotaxtla and Tres Ríos, which display contrasting responses to salinity at the biochemical and physiological levels. Using qRT-PCR, the expression of 41 out of 57 NAC genes was validated, of which 23 showed regulation by NaCl. We identified two NAC genes ( Os02g56600 and Os12g07790 ) induced in Cotaxtla, but repressed in Tres Ríos when plants were exposed to 100 mM NaCl in nutrient solution. In both elite cultivars, treated plants showed higher concentrations of total amino acids and proline in comparison to the controls; in all cases, Cotaxtla plants accumulated more free amino acids and proline than Tres Ríos plants. Furthermore, shoot growth was more affected in both cultivars, while root length was not reduced in treated plants in comparison to the controls. We conclude that both elite rice cultivars exhibit different expression patterns of NAC transcription factors as well as biochemical and physiological responses to salt stress, giving rise to better performance of Cotaxtla plants in comparison to Tres Ríos plants under our experimental conditions.
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Claims 7
Claim · model-written summary
Of 41 NAC genes validated by qRT-PCR, 23 showed regulation by NaCl in rice leaves.
- Taxon
- rice
Oryza sativat0 - Treatment
- NaCle0
- Outcome
- regulation by NaCle0
- Value
- 23e0
- Qualifier
- 41 out of 57 NAC genese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Using qRT-PCR, the expression of 41 out of 57 NAC genes was validated, of which 23 showed regulation by NaCl”
t0“elite rice cultivars”
Claim · model-written summary
Two NAC genes were induced by 100 mM NaCl in the Cotaxtla rice cultivar.
- Taxon
- riceOryza sativat0
- Material
- Cotaxtlae1
- Treatment
- 100 mM NaCle1
- Gene
- Os02g56600 and Os12g07790e1
- Outcome
- NAC genese1
- Direction
- inducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“We identified two NAC genes ( Os02g56600 and Os12g07790 ) induced in Cotaxtla, but repressed in Tres Ríos when plants were exposed to 100 mM NaCl in nutrient solution”
t0“elite rice cultivars”
Claim · model-written summary
Two NAC genes were repressed by 100 mM NaCl in the Tres Ríos rice cultivar.
- Taxon
- riceOryza sativat0
- Material
- Tres Ríose1
- Treatment
- 100 mM NaCle1
- Gene
- Os02g56600 and Os12g07790e1
- Outcome
- NAC genese1
- Direction
- repressede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“We identified two NAC genes ( Os02g56600 and Os12g07790 ) induced in Cotaxtla, but repressed in Tres Ríos when plants were exposed to 100 mM NaCl in nutrient solution”
t0“elite rice cultivars”
Claim · model-written summary
Under NaCl, treated rice plants had higher total amino acids and proline than controls in both cultivars.
- Taxon
- riceOryza sativat0
- Treatment
- 100 mM NaCle1
- Outcome
- total amino acids and prolinee2
- Direction
- highere2
- Comparator
- controlse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“exposed to 100 mM NaCl in nutrient solution”
e2“In both elite cultivars, treated plants showed higher concentrations of total amino acids and proline in comparison to the controls”
t0“elite rice cultivars”
Claim · model-written summary
Cotaxtla plants accumulated more free amino acids and proline than Tres Ríos plants under NaCl.
- Taxon
- riceOryza sativat0
- Material
- Cotaxtlae3
- Outcome
- free amino acids and prolinee3
- Direction
- accumulated moree3
- Comparator
- Tres Ríose3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“in all cases, Cotaxtla plants accumulated more free amino acids and proline than Tres Ríos plants”
t0“elite rice cultivars”
Claim · model-written summary
Under NaCl, shoot growth was more affected than in controls in both cultivars.
- Taxon
- riceOryza sativat0
- Treatment
- 100 mM NaCle1
- Outcome
- shoot growthe4
- Direction
- more affectede4
- Comparator
- controlse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“exposed to 100 mM NaCl in nutrient solution”
e4“Furthermore, shoot growth was more affected in both cultivars, while root length was not reduced in treated plants in comparison to the controls”
t0“elite rice cultivars”
Claim · model-written summary
Under NaCl, root length was not reduced in treated plants compared with controls.
- Taxon
- riceOryza sativat0
- Treatment
- 100 mM NaCle1
- Outcome
- root lengthe4
- Direction
- not reducede4
- Comparator
- controlse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“exposed to 100 mM NaCl in nutrient solution”
e4“Furthermore, shoot growth was more affected in both cultivars, while root length was not reduced in treated plants in comparison to the controls”
t0“elite rice cultivars”
The same questions in other papers
sodium chloride · growth · Oryza sativa (rice)Results differ
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