Abstract
cis-4-Cyclohexene-1,2-dicarboximide (CHDC) inhibits the germination of light-requiring seeds in both light and darkness but has no effect upon the germination of non-light-requiring seeds. In lettuce seeds, CHDC inhibits the action of far-red-absorbing form of phytochrome in breaking dormancy. This inhibition can be overcome by benzyladenine and red light together, but not by a combination of red light and gibberellic acid. Gibberellic acid-induced germination of lettuce seeds in darkness is inhibited also by CHDC. Embryos isolated from dark-imbibed lettuce seeds germinate on the inhibitor. CHDC was thought to be an "analogue" of cycloheximide, but it does not inhibit protein synthesis in lettuce seeds. Our results lead us to conclude that CHDC inhibits germination of seeds that require red light to break dormancy and interferes with some aspect of metabolism that is stimulated by far-red-absorbing form of phytochrome.
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Claims 9
Claim · model-written summary
CHDC inhibited germination of light-requiring seeds in light and darkness.
- Treatment
- cis-4-Cyclohexene-1,2-dicarboximide (CHDC)e0
- Outcome
- germination of light-requiring seedse0
- Direction
- inhibitse0
- Qualifier
- in both light and darknesse0
Not reportedTaxonComparator
Verbatim
e0“cis-4-Cyclohexene-1,2-dicarboximide (CHDC) inhibits the germination of light-requiring seeds in both light and darkness”
Claim · model-written summary
CHDC had no effect on germination of non-light-requiring seeds.
Not reportedTaxonComparator
Verbatim
e0“but has no effect upon the germination of non-light-requiring seeds”
t0“(CHDC)”
Claim · model-written summary
CHDC inhibited phytochrome-mediated dormancy breaking in lettuce seeds.
- Taxon
- lettuce
Lactuca sativae0 - Organ / stage
- seedse0
- Treatment
- CHDCe0
- Gene
- phytochromee0
- Outcome
- breaking dormancye0
- Direction
- inhibitse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In lettuce seeds, CHDC inhibits the action of far-red-absorbing form of phytochrome in breaking dormancy.”
Claim · model-written summary
Benzyladenine with red light overcame CHDC inhibition in lettuce seeds.
- Taxon
- lettuceLactuca sativae1
- Treatment
- benzyladenine and red light togethere0
- Outcome
- inhibitione0
- Direction
- overcomee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This inhibition can be overcome by benzyladenine and red light together, but not by a combination of red light and gibberellic acid.”
e1“Gibberellic acid-induced germination of lettuce seeds”
Claim · model-written summary
Red light with gibberellic acid did not overcome CHDC inhibition in lettuce seeds.
- Taxon
- lettuceLactuca sativae1
- Treatment
- red light and gibberellic acide0
- Outcome
- inhibitione0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This inhibition can be overcome by benzyladenine and red light together, but not by a combination of red light and gibberellic acid.”
e1“Gibberellic acid-induced germination of lettuce seeds”
Claim · model-written summary
CHDC inhibited gibberellic-acid-induced germination of lettuce seeds in darkness.
- Taxon
- lettuceLactuca sativae0
- Organ / stage
- seedse0
- Treatment
- CHDCe0
- Outcome
- Gibberellic acid-induced germinatione0
- Direction
- inhibitede0
- Qualifier
- in darknesse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gibberellic acid-induced germination of lettuce seeds in darkness is inhibited also by CHDC.”
Claim · model-written summary
Embryos from dark-imbibed lettuce seeds germinated on CHDC.
- Taxon
- lettuceLactuca sativae0
- Organ / stage
- Embryose0
- Treatment
- the inhibitore0
- Outcome
- germinate on the inhibitore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Embryos isolated from dark-imbibed lettuce seeds germinate on the inhibitor.”
Claim · model-written summary
CHDC did not inhibit protein synthesis in lettuce seeds.
- Taxon
- lettuceLactuca sativae0
- Treatment
- CHDCe0
- Outcome
- protein synthesise0
- Direction
- does not inhibite0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CHDC was thought to be an "analogue" of cycloheximide, but it does not inhibit protein synthesis in lettuce seeds.”
Claim · model-written summary
The authors conclude CHDC interferes with metabolism stimulated by the far-red-absorbing phytochrome form.
- Taxon
- lettuceLactuca sativae1
- Gene
- phytochromee0
- Outcome
- metabolisme0
- Qualifier
- some aspect of metabolism that is stimulated by far-red-absorbing form of phytochromee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“interferes with some aspect of metabolism that is stimulated by far-red-absorbing form of phytochrome”
e1“Gibberellic acid-induced germination of lettuce seeds”
The same questions in other papers
Gibberellic acid · disease · Lactuca sativa (garden lettuce)Positive and negative results
1 paper in the same direction as this paper · 4 in the opposite direction
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →N-benzyladenine · disease · Lactuca sativa (garden lettuce)Results agree
1 paper in the same direction as this paper
- positive
light · disease · Lactuca sativa (garden lettuce)Positive and negative results
12 papers in the same direction as this paper · 9 in the opposite direction
- negative
- negative
- negative
18 papers more in this group
See all 22 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.