Abstract
The protective effects of the cytokinin 6-benzylaminopurine and the compounds thidiazuron and kartolin, displaying a cytokinin activity, on the photosynthetic apparatus of young seedlings and leaves of adult plants of two wheat (Triticum aestivum L.) cultivars, Mironovskaya 808 (more drought tolerant) and Lutescens 758 (less tolerant to water stress), were compared on the background of an increasing water deficiency. At the stages of drought and subsequent rehydration, cartolin preparations were the most efficient protectors, enhancing a less pronounced decrease in the intensity of photosynthesis, carboxylating activity of the key enzyme of carbon metabolism--ribulose bisphosphate carboxylase/oxygenase (EC 4.1.1.39)-and the activity of NADP-glyceraldehyde phosphate dehydrogenase--the enzyme complex comprising phosphoglycerate kinase (EC 2.7.2.3) and glyceraldehyde phosphate dehydrogenase (EC 1.2.1.13). This effect also included an increase in the leaf specific density and plant productivity. The negative influence of water stress on the photosynthetic apparatus was more pronounced in a less tolerant cultivar Lutescens 758 and in the seedlings as compared with the adult plants.
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Claims 7
Claim · model-written summary
Cartolin preparations best protected photosynthetic intensity during drought and rehydration.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- cartolin preparationse0
- Outcome
- intensity of photosynthesise0
- Direction
- less pronounced decreasee0
- Qualifier
- drought and subsequent rehydratione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the stages of drought and subsequent rehydration, cartolin preparations were the most efficient protectors, enhancing a less pronounced decrease in the intensity of photosynthesis, carboxylating activity of the key enzyme of carbon metabolism--ribulose bisphosphate carboxylase/oxygenase (EC 4.1.1.39)-and the activity of NADP-glyceraldehyde phosphate dehydrogenase--the enzyme complex comprising phosphoglycerate kinase (EC 2.7.2.3) and glyceraldehyde phosphate dehydrogenase (EC 1.2.1.13).”
t0“wheat plants”
Claim · model-written summary
Cartolin preparations lessened decline in RuBisCO carboxylating activity.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- cartolin preparationse0
- Gene
- ribulose bisphosphate carboxylase/oxygenasee0
- Outcome
- carboxylating activitye0
- Direction
- less pronounced decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cartolin preparations were the most efficient protectors, enhancing a less pronounced decrease in the intensity of photosynthesis, carboxylating activity of the key enzyme of carbon metabolism--ribulose bisphosphate carboxylase/oxygenase (EC 4.1.1.39)-and the activity of NADP-glyceraldehyde phosphate dehydrogenase--the enzyme complex comprising phosphoglycerate kinase (EC 2.7.2.3) and glyceraldehyde phosphate dehydrogenase (EC 1.2.1.13).”
t0“wheat plants”
Claim · model-written summary
Cartolin preparations lessened decline in NADP-glyceraldehyde phosphate dehydrogenase activity.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- cartolin preparationse0
- Gene
- NADP-glyceraldehyde phosphate dehydrogenasee0
- Outcome
- activity of NADP-glyceraldehyde phosphate dehydrogenasee0
- Direction
- less pronounced decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cartolin preparations were the most efficient protectors, enhancing a less pronounced decrease in the intensity of photosynthesis, carboxylating activity of the key enzyme of carbon metabolism--ribulose bisphosphate carboxylase/oxygenase (EC 4.1.1.39)-and the activity of NADP-glyceraldehyde phosphate dehydrogenase--the enzyme complex comprising phosphoglycerate kinase (EC 2.7.2.3) and glyceraldehyde phosphate dehydrogenase (EC 1.2.1.13).”
t0“wheat plants”
Claim · model-written summary
Cartolin increased leaf specific density.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- cartoline0
- Outcome
- leaf specific densitye0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cartolin preparations were the most efficient protectors, enhancing a less pronounced decrease in the intensity of photosynthesis, carboxylating activity of the key enzyme of carbon metabolism--ribulose bisphosphate carboxylase/oxygenase (EC 4.1.1.39)-and the activity of NADP-glyceraldehyde phosphate dehydrogenase--the enzyme complex comprising phosphoglycerate kinase (EC 2.7.2.3) and glyceraldehyde phosphate dehydrogenase (EC 1.2.1.13). This effect also included an increase in the leaf specific density and plant productivity.”
t0“wheat plants”
Claim · model-written summary
Cartolin increased plant productivity.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- cartoline0
- Outcome
- plant productivitye0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cartolin preparations were the most efficient protectors, enhancing a less pronounced decrease in the intensity of photosynthesis, carboxylating activity of the key enzyme of carbon metabolism--ribulose bisphosphate carboxylase/oxygenase (EC 4.1.1.39)-and the activity of NADP-glyceraldehyde phosphate dehydrogenase--the enzyme complex comprising phosphoglycerate kinase (EC 2.7.2.3) and glyceraldehyde phosphate dehydrogenase (EC 1.2.1.13). This effect also included an increase in the leaf specific density and plant productivity.”
t0“wheat plants”
Claim · model-written summary
Water stress harmed the photosynthetic apparatus more in Lutescens 758 than the more tolerant cultivar.
- Taxon
- wheatTriticum aestivumt0
- Material
- Lutescens 758e0
- Outcome
- negative influence of water stress on the photosynthetic apparatuse0
- Direction
- more pronouncede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The negative influence of water stress on the photosynthetic apparatus was more pronounced in a less tolerant cultivar Lutescens 758 and in the seedlings as compared with the adult plants.”
t0“wheat plants”
Claim · model-written summary
Water stress harmed seedling photosynthesis more than adult plant photosynthesis.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- seedlingse0
- Outcome
- negative influence of water stress on the photosynthetic apparatuse0
- Direction
- more pronouncede0
- Comparator
- adult plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The negative influence of water stress on the photosynthetic apparatus was more pronounced in a less tolerant cultivar Lutescens 758 and in the seedlings as compared with the adult plants.”
t0“wheat plants”