Abstract
The study was designed to determine the possible relationship between Brassica oleracea var. italica seedlings stored at 2°C in the dark for seven and fourteen days, respectively, and the level of certain antioxidant parameters in particular organs. A parallel objective of the experiment was to determine if the reaction of seedlings to low temperature might be persistent in fully developed plants until harvest time. After 14 days of chilling a significant increase in the glutathione content was observed in the seedling leaves in comparison to the non-chilled plants. During vegetation in field conditions this effect was maintained in leaves up to the stage of formation of flower buds. At harvest the highest content of glutathione was demonstrated in broccoli heads, obtained from plants, which were previously chilled in the seedling phase for two weeks. Peroxidase activity in broccoli seedlings increased each year of the three-year study due to the duration of the cooling time, whereas in the case of catalase the changes were not so distinct. At harvest time the activity of both enzymes in the leaves and flower buds fluctuated according to the particular year of study.
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Claims 6
Claim · model-written summary
Fourteen days of chilling significantly increased glutathione in seedling leaves versus non-chilled plants.
- Taxon
- Brassica oleracea L. var. italica
Brassica oleracea var. italicat0 - Organ / stage
- seedling leavese0
- Treatment
- 14 days of chillinge0
- Outcome
- glutathione contente0
- Direction
- increasee0
- Comparator
- non-chilled plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 14 days of chilling a significant increase in the glutathione content was observed in the seedling leaves in comparison to the non-chilled plants.”
t0“Brassica oleracea L. var. italica”
Claim · model-written summary
The elevated leaf glutathione persisted until flower bud formation.
- Taxon
- Brassica oleracea L. var. italicaBrassica oleracea var. italicat0
- Organ / stage
- leavese0
- Outcome
- this effect was maintainede0
- Qualifier
- up to the stage of formation of flower budse0
- Setting
- field conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During vegetation in field conditions this effect was maintained in leaves up to the stage of formation of flower buds.”
t0“Brassica oleracea L. var. italica”
Claim · model-written summary
Broccoli heads from seedlings chilled for two weeks had the highest glutathione content at harvest.
- Taxon
- broccoliBrassica oleracea var. italicae0
- Organ / stage
- broccoli headse0
- Treatment
- chilled in the seedling phase for two weekse0
- Outcome
- content of glutathionee0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At harvest the highest content of glutathione was demonstrated in broccoli heads, obtained from plants, which were previously chilled in the seedling phase for two weeks.”
Claim · model-written summary
Peroxidase activity in broccoli seedlings increased with cooling duration each study year.
- Taxon
- broccoliBrassica oleracea var. italicae0
- Organ / stage
- seedlingse0
- Treatment
- duration of the cooling timee0
- Outcome
- Peroxidase activitye0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Peroxidase activity in broccoli seedlings increased each year of the three-year study due to the duration of the cooling time”
Claim · model-written summary
Catalase activity changes with cooling duration were less distinct.
- Taxon
- Brassica oleracea L. var. italicaBrassica oleracea var. italicat0
- Outcome
- catalase the changes were not so distincte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“whereas in the case of catalase the changes were not so distinct.”
t0“Brassica oleracea L. var. italica”
Claim · model-written summary
Leaf and flower-bud peroxidase and catalase activity fluctuated by study year at harvest.
- Taxon
- Brassica oleracea L. var. italicaBrassica oleracea var. italicat0
- Organ / stage
- leaves and flower budse0
- Outcome
- activity of both enzymese0
- Direction
- fluctuatede0
- Setting
- particular year of studye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At harvest time the activity of both enzymes in the leaves and flower buds fluctuated according to the particular year of study.”
t0“Brassica oleracea L. var. italica”
The same questions in other papers
cold · molecular: metabolites · Brassica oleracea (wild cabbage)Results differ
5 papers in the same direction as this paper · 3 in the opposite direction · 1 reporting no difference from an alternative
- positive
- no effect
- negative
6 papers more in this group
See all 10 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.