Abstract
Complex study of the effect of soil drought (72 h) and subsequent rehydration for 24 and 48 h on the activities of antioxidant and osmoprotective systems in the leaves of young plants of winter wheat ( Triticum aestivum L.) cvs. Ballada (high productivity) and Beltskaya (low productivity) was carried out. Under drought conditions, the content of water in the leaves of cv. Ballada reduced to a lesser degree than in the leaves of cv. Beltskaya. Drought did not affect the rate of leaf growth in cv. Ballada but retarded leaf growth in cv. Beltskaya. Under drought conditions, the content of ascorbate reduced in cv. Beltskaya but was not changed in cv. Ballada; the content of glutathione increased by 19% in cv. Ballada and by 30% in cv. Beltskaya. Under drought conditions, ascorbate peroxidase activity was not changed in cv. Ballada whereas in cv. Beltskaya there was a tendency to its decrease. Glutathione reductase activity in the leaves of cv. Beltskaya increased stronger than in cv. Ballada. Substantial differences between cultivars in the accumulation of reducing sugars and sucrose under water deficit were observed. In both cultivars, drought induced an active proline accumulation. Observed differences in the cultivar responses to water stress evidently indicate differences in the strategy of their adaptation to drought. Drought did not affect the contents of chlorophyll and MDA in both cultivars. The data obtained allow a suggestion that, under conditions of moderate soil drought, the coordinated system of antioxidant defense and osmotic control functioned sufficiently effective; as a result, oxidative stress was not developed in both cultivars. Young plants of both cultivars differing in their responses to water deficit retained the ability to recover after rehydration.
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Claims 14
Claim · model-written summary
Under drought, Ballada leaf water content declined less than Beltskaya.
Verbatim
e0“Under drought conditions, the content of water in the leaves of cv. Ballada reduced to a lesser degree than in the leaves of cv. Beltskaya”
Claim · model-written summary
Drought did not affect Ballada leaf growth.
Verbatim
e0“Drought did not affect the rate of leaf growth in cv. Ballada but retarded leaf growth in cv. Beltskaya”
Claim · model-written summary
Drought retarded Beltskaya leaf growth.
Verbatim
e0“Drought did not affect the rate of leaf growth in cv. Ballada but retarded leaf growth in cv. Beltskaya”
Claim · model-written summary
Drought reduced Beltskaya ascorbate content.
Verbatim
e0“Under drought conditions, the content of ascorbate reduced in cv. Beltskaya but was not changed in cv. Ballada”
Claim · model-written summary
Drought left Ballada ascorbate content unchanged.
Verbatim
e0“Under drought conditions, the content of ascorbate reduced in cv. Beltskaya but was not changed in cv. Ballada”
Claim · model-written summary
Drought increased Ballada glutathione by 19%.
- Taxon
- wheat
Triticum aestivumt0 - Material
- cv. Balladae0
- Treatment
- droughte1
- Outcome
- content of glutathionee0
- Direction
- increasede0
- Value
- 19%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e0“the content of glutathione increased by 19% in cv. Ballada and by 30% in cv. Beltskaya”
e1“Under drought conditions, the content of ascorbate reduced in cv. Beltskaya”
Claim · model-written summary
Drought increased Beltskaya glutathione by 30%.
- Taxon
- wheatTriticum aestivumt0
- Material
- cv. Beltskayae0
- Treatment
- droughte1
- Outcome
- content of glutathionee0
- Direction
- increasede0
- Value
- 30%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e0“the content of glutathione increased by 19% in cv. Ballada and by 30% in cv. Beltskaya”
e1“Under drought conditions, the content of ascorbate reduced in cv. Beltskaya”
Claim · model-written summary
Drought did not change Ballada ascorbate peroxidase activity.
Verbatim
e0“Under drought conditions, ascorbate peroxidase activity was not changed in cv. Ballada whereas in cv. Beltskaya there was a tendency to its decrease”
Claim · model-written summary
Beltskaya ascorbate peroxidase activity tended to decrease under drought.
Verbatim
e0“Under drought conditions, ascorbate peroxidase activity was not changed in cv. Ballada whereas in cv. Beltskaya there was a tendency to its decrease”
Claim · model-written summary
Beltskaya leaf glutathione reductase activity increased more strongly than Ballada.
Verbatim
e0“Glutathione reductase activity in the leaves of cv. Beltskaya increased stronger than in cv. Ballada”
Claim · model-written summary
Cultivars differed substantially in reducing sugar and sucrose accumulation under water deficit.
Verbatim
e0“Substantial differences between cultivars in the accumulation of reducing sugars and sucrose under water deficit were observed”
Claim · model-written summary
Drought induced proline accumulation in both cultivars.
Not reportedComparator
Verbatim
e0“In both cultivars, drought induced an active proline accumulation”
Claim · model-written summary
Drought did not affect chlorophyll and MDA contents in either cultivar.
Not reportedComparator
Verbatim
e0“Drought did not affect the contents of chlorophyll and MDA in both cultivars”
Claim · model-written summary
Both cultivars retained recovery ability after rehydration.
Verbatim
e0“Young plants of both cultivars differing in their responses to water deficit retained the ability to recover after rehydration”
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