Abstract
The influence of silicon (Si, 3 mM), sodium chloride (NaCl, 135 mM), and Si, 3 mM + NaCl, 135 mM supply on chlorophyll content, photosynthetic activity (CO2 -fixation), the concentration of malondialdehyde (MDA) and H2O2, activities of superoxide dismutase (SOD), catalase (CAT) enzymes, free proline and protein contents were studied in maize seedlings leaves after two month of treatments. The results indicated that silicon partially offset the negative impacts and increased tolerance of maize to NaCl stress by enhancing SOD and CAT activities, chlorophyll content and photosynthetic activity. Salt stress although decreased SOD, CAT activities and total soluble protein content, addition of silicon (3 mM) to the nutrient solution enhanced SOD and CAT activities and total protein. In contrast, salt stress considerably increased H2O2, free proline level and MDA concentration and Si addition significantly reduced H2O2, free proline level and MDA concentration in stressed maize leaves. Enhanced activities of SOD and CAT by Si addition may protect the plant tissues from salt induced oxidative damage, thus mitigating salt toxicity and improving the maize growth. These results suggest that the scavenging system forms the primary defense line in protecting oxidative damage under salt stress in crop plants.
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Claims 8
Claim · model-written summary
Silicon partly offset salt stress and increased maize tolerance.
- Treatment
- silicone0
- Outcome
- tolerance of maize to NaCl stresse0
- Direction
- increasede0
- Comparator
- NaCl stresse0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“silicon partially offset the negative impacts and increased tolerance of maize to NaCl stress”
Claim · model-written summary
Silicon enhanced SOD and CAT activities, chlorophyll content and photosynthetic activity.
- Treatment
- silicone2
- Outcome
- SOD and CAT activities, chlorophyll content and photosynthetic activitye0
- Direction
- enhancinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“by enhancing SOD and CAT activities, chlorophyll content and photosynthetic activity”
t0“maize (Zea mays L.)”
e2“silicon partially offset the negative impacts and increased tolerance of maize to NaCl stress”
Claim · model-written summary
Salt stress decreased SOD and CAT activities and total soluble protein content.
- Treatment
- Salt stresse0
- Outcome
- SOD, CAT activities and total soluble protein contente0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress although decreased SOD, CAT activities and total soluble protein content”
t0“maize (Zea mays L.)”
Claim · model-written summary
Silicon addition under salt stress enhanced SOD and CAT activities and total protein.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“addition of silicon (3 mM) to the nutrient solution enhanced SOD and CAT activities and total protein”
t0“maize (Zea mays L.)”
Claim · model-written summary
Salt stress increased H2O2, free proline and MDA in maize leaves.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salt stress considerably increased H2O2, free proline level and MDA concentration”
t0“maize (Zea mays L.)”
Claim · model-written summary
Silicon significantly reduced H2O2, free proline and MDA in stressed maize leaves.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Si addition significantly reduced H2O2, free proline level and MDA concentration in stressed maize leaves”
Claim · model-written summary
The authors proposed that silicon-enhanced SOD and CAT protect tissues from salt-induced oxidative damage and improve growth.
- Treatment
- Si additione0
- Gene
- SOD and CATe0
- Outcome
- protect the plant tissues from salt induced oxidative damagee0
- Qualifier
- mitigating salt toxicity and improving the maize growthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Enhanced activities of SOD and CAT by Si addition may protect the plant tissues from salt induced oxidative damage, thus mitigating salt toxicity and improving the maize growth”
Claim · model-written summary
The authors suggested that scavenging is the primary defense against oxidative damage under salt stress.
Verbatim
e0“the scavenging system forms the primary defense line in protecting oxidative damage under salt stress in crop plants”
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