Abstract
Abstract Salinity has a two‐phase effect on plant growth, an osmotic effect due to salts in the outside solution and ion toxicity in a second phase due to salt build‐up in transpiring leaves. To elucidate salt‐resistance mechanisms in the first phase of salt stress, we studied the biochemical reaction of salt‐resistant and salt‐sensitive wheat ( Triticum aestivum L.) genotypes at protein level after 10 d exposure to 125 mM–NaCl salinity (first phase of salt stress) and the variation of salt resistance among the genotypes after 30 d exposure to 125 mM–NaCl salinity (second phase of salt stress) in solution culture experiments in a growth chamber. The three genotypes differed significantly in absolute and relative shoot and root dry weights after 30 d exposure to NaCl salinity. SARC‐1 produced the maximum and 7‐Cerros the minimum shoot dry weights under salinity relative to control. A highly significant negative correlation (r 2 = –0.99) was observed between salt resistance (% shoot dry weight under salinity relative to control) and shoot Na + concentration of the wheat genotypes studied. However, the salt‐resistant and salt‐sensitive genotypes showed a similar biochemical reaction at the level of proteins after 10 d exposure to 125 mM NaCl. In both genotypes, the expression of more than 50% proteins was changed, but the difference between the genotypes in various categories of protein change (up‐regulated, down‐regulated, disappeared, and new‐appeared) was only 1%–8%. It is concluded that the initial biochemical reaction to salinity at protein level in wheat is an unspecific response and not a specific adaptation to salinity.
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Claims 8
Claim · model-written summary
Shoot and root dry weights of the wheat genotypes differed significantly after 30 days of NaCl salinity.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- NaCl salinitye1
- Outcome
- shoot and root dry weightse1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The three genotypes differed significantly in absolute and relative shoot and root dry weights after 30 d exposure to NaCl salinity”
t0“wheat genotypes”
Claim · model-written summary
Genotype SARC-1 had the maximum shoot dry weight under salinity relative to control.
- Taxon
- wheatTriticum aestivumt0
- Material
- SARC‐1e2
- Treatment
- salinitye2
- Outcome
- shoot dry weightse2
- Direction
- maximume2
- Comparator
- controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“SARC‐1 produced the maximum and 7‐Cerros the minimum shoot dry weights under salinity relative to control”
t0“wheat genotypes”
Claim · model-written summary
Genotype 7-Cerros had the minimum shoot dry weight under salinity relative to control.
- Taxon
- wheatTriticum aestivumt0
- Material
- 7‐Cerrose2
- Treatment
- salinitye2
- Outcome
- shoot dry weightse2
- Direction
- minimume2
- Comparator
- controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“SARC‐1 produced the maximum and 7‐Cerros the minimum shoot dry weights under salinity relative to control”
t0“wheat genotypes”
Claim · model-written summary
Salt resistance was negatively and highly significantly correlated with shoot Na+ concentration in wheat.
- Taxon
- wheatTriticum aestivumt0
- Compound
- Na +e3
- Outcome
- salt resistancee3
- Direction
- negativee3
- Qualifier
- highly significante3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“A highly significant negative correlation (r 2 = –0.99) was observed between salt resistance (% shoot dry weight under salinity relative to control) and shoot Na + concentration”
t0“wheat genotypes”
Claim · model-written summary
The salt-resistant and salt-sensitive wheat genotypes showed a similar protein-level biochemical reaction after 10 days of 125 mM NaCl.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- 125 mM NaCle4
- Outcome
- biochemical reaction at the level of proteinse4
- Qualifier
- similare4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“showed a similar biochemical reaction at the level of proteins after 10 d exposure to 125 mM NaCl”
t0“wheat genotypes”
Claim · model-written summary
The expression of more than 50% of proteins was changed in both wheat genotypes after 125 mM NaCl.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- expression of more than 50% proteinse5
- Direction
- changede5
- Value
- more than 50%e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“In both genotypes, the expression of more than 50% proteins was changed”
t0“wheat genotypes”
Claim · model-written summary
The genotype difference in categories of protein change was only 1%–8%.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- categories of protein changee7
- Value
- 1%–8%e7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“the difference between the genotypes in various categories of protein change (up‐regulated, down‐regulated, disappeared, and new‐appeared) was only 1%–8%”
t0“wheat genotypes”
Claim · model-written summary
The initial biochemical reaction to salinity at protein level in wheat is an unspecific response rather than a specific adaptation.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- initial biochemical reaction to salinitye6
- Qualifier
- unspecific responsee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“It is concluded that the initial biochemical reaction to salinity at protein level in wheat is an unspecific response and not a specific adaptation to salinity”
t0“wheat genotypes”
The same questions in other papers
salinity · growth · Triticum aestivum (wheat)Positive and negative results
48 papers in the same direction as this paper · 327 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- negative
373 papers more in this group
See all 377 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.