Abstract
Salt stress as a major adverse factor can lower leaf water potential, leading to reduced turgor and some other responses, and ultimately lower crop productivity in arid and semi arid zones. Wheat is one of the main crops occupying a large area in Iran, where salt stress is the most limiting factor. Clearly, plant salt stress tolerance requires the activation of complex metabolic activities including antioxidative pathways, especially reactive oxygen species (ROS) and scavenging systems within the cells which can contribute to continued growth under water stress. In the work reported in this paper, the seeds of two local wheat cultivars (Alvand and Sardari) were grown hydroponically. Seedlings were subjected to Hoagland's solution as control, and 50, 100, 150 and 200 mM NaCl for 10 days. As a result, SOD (superoxide dismutase) increased in Sardari with the increase of salt stress, while in the case of Alvand, SOD showed constant activity at all salt stress levels. Meanwhile, CAT and GR exhibited the same trends in the two cultivars of wheat in salt stress conditions. Results indicated that in the case of Sardari, the scavenging of ROS by the scavenging system especially by SOD, CAT and GR was done well and damage to membranes or MDA was controlled. But in the case of Alvand, damage to membranes increased with the rise of stress levels. It can be concluded that all three antioxidant enzymes were limiting factors for this cultivar. Also these reasons led to the sensitivity of Alvand to salt stress.
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Claims 7
Claim · model-written summary
SOD activity increased in cultivar Sardari with increasing salt stress.
- Taxon
- wheat
Triticum aestivumt0 - Material
- Sardarie3
- Treatment
- salt stresse3
- Outcome
- SOD (superoxide dismutase)e3
- Direction
- increasede3
- Comparator
- Hoagland's solution as controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“ON THE WHEAT SEEDLING”
e2“Seedlings were subjected to Hoagland's solution as control, and 50, 100, 150 and 200 mM NaCl for 10 days”
e3“As a result, SOD (superoxide dismutase) increased in Sardari with the increase of salt stress”
Claim · model-written summary
SOD activity in cultivar Alvand stayed constant across all salt stress levels.
- Taxon
- wheatTriticum aestivumt0
- Material
- Alvande4
- Treatment
- salt stress levelse4
- Outcome
- SODe4
- Direction
- constante4
- Comparator
- Hoagland's solution as controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“ON THE WHEAT SEEDLING”
e2“Seedlings were subjected to Hoagland's solution as control, and 50, 100, 150 and 200 mM NaCl for 10 days”
e4“in the case of Alvand, SOD showed constant activity at all salt stress levels”
Claim · model-written summary
CAT and GR showed the same trends in the two wheat cultivars under salt stress.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- salt stress conditionse5
- Outcome
- CAT and GRe5
- Direction
- the same trendse5
- Comparator
- Hoagland's solution as controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“ON THE WHEAT SEEDLING”
e2“Seedlings were subjected to Hoagland's solution as control, and 50, 100, 150 and 200 mM NaCl for 10 days”
e5“Meanwhile, CAT and GR exhibited the same trends in the two cultivars of wheat in salt stress conditions”
Claim · model-written summary
In Sardari, ROS scavenging by SOD, CAT and GR was done well under salt stress.
- Taxon
- wheatTriticum aestivumt0
- Material
- Sardarie6
- Treatment
- salt stresse3
- Outcome
- the scavenging of ROS by the scavenging systeme6
- Direction
- was done welle6
- Comparator
- Hoagland's solution as controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“ON THE WHEAT SEEDLING”
e2“Seedlings were subjected to Hoagland's solution as control, and 50, 100, 150 and 200 mM NaCl for 10 days”
e3“As a result, SOD (superoxide dismutase) increased in Sardari with the increase of salt stress”
e6“Results indicated that in the case of Sardari, the scavenging of ROS by the scavenging system especially by SOD, CAT and GR was done well and damage to membranes or MDA was controlled”
Claim · model-written summary
In Sardari, damage to membranes or MDA was controlled under salt stress.
- Taxon
- wheatTriticum aestivumt0
- Material
- Sardarie6
- Treatment
- salt stresse3
- Outcome
- damage to membranes or MDAe6
- Direction
- was controllede6
- Comparator
- Hoagland's solution as controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“ON THE WHEAT SEEDLING”
e2“Seedlings were subjected to Hoagland's solution as control, and 50, 100, 150 and 200 mM NaCl for 10 days”
e3“As a result, SOD (superoxide dismutase) increased in Sardari with the increase of salt stress”
e6“Results indicated that in the case of Sardari, the scavenging of ROS by the scavenging system especially by SOD, CAT and GR was done well and damage to membranes or MDA was controlled”
Claim · model-written summary
In Alvand, damage to membranes increased as stress levels rose.
- Taxon
- wheatTriticum aestivumt0
- Material
- Alvande7
- Treatment
- the rise of stress levelse7
- Outcome
- damage to membranese7
- Direction
- increasede7
- Comparator
- Hoagland's solution as controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“ON THE WHEAT SEEDLING”
e2“Seedlings were subjected to Hoagland's solution as control, and 50, 100, 150 and 200 mM NaCl for 10 days”
e7“But in the case of Alvand, damage to membranes increased with the rise of stress levels”
Claim · model-written summary
The three antioxidant enzymes were limiting factors that made cultivar Alvand sensitive to salt stress.
- Taxon
- wheatTriticum aestivumt0
- Material
- Alvande1
- Outcome
- sensitivity of Alvand to salt stresse1
- Qualifier
- all three antioxidant enzymes were limiting factorse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“ON THE WHEAT SEEDLING”
e0“It can be concluded that all three antioxidant enzymes were limiting factors for this cultivar”
e1“Also these reasons led to the sensitivity of Alvand to salt stress”
The same questions in other papers
salinity · physiology: oxidative · Triticum aestivum (wheat)Positive and negative results
9 papers in the same direction as this paper · 73 in the opposite direction
- negative
- negative
- negative
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