Abstract
In order to better understand the role of cold acclimation in alleviating freezing injury, two barley cultivars with different cold tolerance, i.e. a sensitive cv. Chumai 1 and a tolerant cv. Mo 103, were used. The freezing treatment increased leaf soluble protein content more in the tolerant cultivar than in the sensitive one. Cold acclimation increased H2O2 content of the two cultivars during freezing treatment, especially in Mo 103. Glutathione and ascorbate contents during freezing and recovery were significantly higher in cold-acclimated plants than in non-acclimated ones. Activities of peroxidase, ascorbate peroxidase and glutathione reductase were also higher in cold-acclimated plants than non-acclimated plants during freezing treatment. However, there was no significant difference between cold-acclimated plants and the control plants in catalase activity. It may be assumed that cold acclimation induced H2O2 production, which in turn enhanced activities of antioxidative enzymes and synthesis of antioxidants, resulting in alleviation of oxidative stress caused by freezing.
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Claims 6
Claim · model-written summary
Freezing increased leaf soluble protein more in Mo 103 than Chumai 1.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaret0 - Treatment
- freezing treatmente0
- Outcome
- leaf soluble protein contente0
- Direction
- increasede0
- Comparator
- sensitive onee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“freezing treatment increased leaf soluble protein content more in the tolerant cultivar than in the sensitive one”
t0“barley”
Claim · model-written summary
Cold acclimation increased H2O2 during freezing, particularly in Mo 103.
- Taxon
- barleyHordeum vulgaret0
- Material
- Mo 103e0
- Treatment
- Cold acclimatione0
- Outcome
- H2O2 contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cold acclimation increased H2O2 content of the two cultivars during freezing treatment, especially in Mo 103”
t0“barley”
Claim · model-written summary
Acclimated plants had higher glutathione and ascorbate during freezing and recovery.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- cold-acclimated plantse0
- Outcome
- Glutathione and ascorbate contentse0
- Direction
- highere0
- Qualifier
- during freezing and recoverye0
- Comparator
- non-acclimated onese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glutathione and ascorbate contents during freezing and recovery were significantly higher in cold-acclimated plants than in non-acclimated ones”
t0“barley”
Claim · model-written summary
Acclimated plants had higher peroxidase, ascorbate peroxidase and glutathione reductase activity during freezing.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- cold-acclimated plantse0
- Outcome
- Activities of peroxidase, ascorbate peroxidase and glutathione reductasee0
- Direction
- highere0
- Comparator
- non-acclimated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Activities of peroxidase, ascorbate peroxidase and glutathione reductase were also higher in cold-acclimated plants than non-acclimated plants during freezing treatment”
t0“barley”
Claim · model-written summary
Catalase activity did not differ significantly between acclimated and control plants.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- cold-acclimated plantse0
- Outcome
- catalase activitye0
- Direction
- no significant differencee0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no significant difference between cold-acclimated plants and the control plants in catalase activity”
t0“barley”
Claim · model-written summary
The authors propose cold acclimation induces H2O2, antioxidants and enzymes and reduces freezing oxidative stress.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- cold acclimatione0
- Outcome
- alleviation of oxidative stress caused by freezinge0
- Qualifier
- H2O2 productione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cold acclimation induced H2O2 production, which in turn enhanced activities of antioxidative enzymes and synthesis of antioxidants, resulting in alleviation of oxidative stress caused by freezing”
t0“barley”
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cold · molecular: metabolites · Hordeum vulgare (barley)Positive and negative results
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- positive
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See all 5 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.