Abstract
Interaction of lycorine, a strong inhibitor of ascorbic acid biosynthesis with kinetin and UV-B radiation has been studied in cucumber (Cucumis sativus L.) cotyledons. Lycorine inhibited hypocotyl growth of seedlings as well as kinetin induced expansion growth of cotyledons in darkness. Exposure to UV-B radiation has similar inhibitory effect on growth. Inhibition of growth by lycorine was accompanied by inhibition of ascorbic acid biosynthesis but UV-B radiation promoted ascorbic acid synthesis while inhibiting growth. The inhibitory effect of lycorine on ascorbic acid synthesis could be completely recovered by kinetin. The role of ascorbic acid as a growth promoter and as an antioxidant is discussed in the light of lycorine effect. Key words: Ascorbic acid, growth, kinetin, lycorine, Ultraviolet –B radiation.
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Claims 6
Claim · model-written summary
Lycorine inhibited seedling hypocotyl growth.
- Taxon
- cucumber
Cucumis sativust0 - Treatment
- Lycorinee0
- Outcome
- hypocotyl growthe0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lycorine inhibited hypocotyl growth of seedlings”
t0“cucumber”
Claim · model-written summary
Lycorine inhibited kinetin induced cotyledon expansion in darkness.
- Taxon
- cucumberCucumis sativust0
- Treatment
- Lycorinee0
- Outcome
- expansion growth of cotyledonse0
- Direction
- inhibitede0
- Qualifier
- in darknesse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lycorine inhibited hypocotyl growth of seedlings as well as kinetin induced expansion growth of cotyledons in darkness”
t0“cucumber”
Claim · model-written summary
UV-B inhibited cucumber growth.
- Taxon
- cucumberCucumis sativust0
- Treatment
- UV-B radiatione0
- Outcome
- growthe0
- Direction
- inhibitorye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exposure to UV-B radiation has similar inhibitory effect on growth”
t0“cucumber”
Claim · model-written summary
Lycorine inhibited ascorbic acid biosynthesis.
- Taxon
- cucumberCucumis sativust0
- Treatment
- lycorinee0
- Outcome
- ascorbic acid biosynthesise0
- Direction
- inhibitione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inhibition of growth by lycorine was accompanied by inhibition of ascorbic acid biosynthesis”
t0“cucumber”
Claim · model-written summary
UV-B promoted ascorbic acid synthesis despite inhibiting growth.
- Taxon
- cucumberCucumis sativust0
- Treatment
- UV-B radiatione0
- Outcome
- ascorbic acid synthesise0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“UV-B radiation promoted ascorbic acid synthesis while inhibiting growth”
t0“cucumber”
Claim · model-written summary
Kinetin completely recovered lycorine inhibition of ascorbic acid synthesis.
- Taxon
- cucumberCucumis sativust0
- Treatment
- kinetine0
- Outcome
- ascorbic acid synthesise0
- Direction
- recoverede0
- Qualifier
- completelye0
- Comparator
- lycorinee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The inhibitory effect of lycorine on ascorbic acid synthesis could be completely recovered by kinetin”
t0“cucumber”
The same questions in other papers
uv · growth · Cucumis sativus (cucumber)Results differ
28 papers in the same direction as this paper · 10 in the opposite direction
- positive
- positive
- positive
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See all 39 papers →uv · quality: phytochemicals · Cucumis sativus (cucumber)Positive and negative results
3 papers in the same direction as this paper · 2 in the opposite direction
- negative
- no effect
- positive
2 papers more in this group
See all 6 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.