Abstract
The effects of a novel plant growth regulator (PGR) prohexadione calcium (BX-112; calcium 3,5-dioxo-4-propionylcyclohexanecarboxylate) on shoot elongation caused by exogenously applied GA1, GA3, GA4) GA19 and GA20 were investigated in rice (Oryza sativa L. cv. Nihonbare and cv. Tan-ginbozu) seedling test. Depending on the dose, BX-112 reduced shoot elongation in both cultivars caused by GA19 and GA20, but not by GA1. When a high dose of BX-112 (e.g. 250 ng/plant and over) was applied with GA1, or GA4, shoot elongation was even promoted. This promotive effect, however, was not observed with GA3. These results suggest that BX-112 inhibits gibberellin (GA) biosynthesis in the rice plant at the 3β- and 2β-hydroxylation of GAs, namely steps of activation and inactivation, respectively.
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Claims 4
Claim · model-written summary
BX-112 reduces shoot elongation caused by GA19 and GA20 in both rice cultivars.
- Taxon
- Oryza sativa L.
Oryza sativat0 - Treatment
- BX-112e1
- Compound
- GA19 and GA20e1
- Outcome
- shoot elongatione1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Rice (Oryza sativa L.) Seedlings”
e1“Depending on the dose, BX-112 reduced shoot elongation in both cultivars caused by GA19 and GA20, but not by GA1”
Claim · model-written summary
A high dose of BX-112 (250 ng/plant and over) with GA1 or GA4 promotes shoot elongation.
- Taxon
- Oryza sativa L.Oryza sativat0
- Treatment
- high dose of BX-112e2
- Compound
- GA1, or GA4e2
- Outcome
- shoot elongatione2
- Direction
- promotede2
- Value
- 250 ng/plante2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Rice (Oryza sativa L.) Seedlings”
e2“When a high dose of BX-112 (e.g. 250 ng/plant and over) was applied with GA1, or GA4, shoot elongation was even promoted. This promotive effect, however, was not observed with GA3”
Claim · model-written summary
The promotive effect of a high dose of BX-112 is not observed with GA3.
- Taxon
- Oryza sativa L.Oryza sativat0
- Treatment
- high dose of BX-112e2
- Compound
- GA3e2
- Outcome
- promotive effecte2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Rice (Oryza sativa L.) Seedlings”
e2“When a high dose of BX-112 (e.g. 250 ng/plant and over) was applied with GA1, or GA4, shoot elongation was even promoted. This promotive effect, however, was not observed with GA3”
Claim · model-written summary
BX-112 is suggested to inhibit gibberellin biosynthesis at the 3β- and 2β-hydroxylation of GAs in rice.
- Taxon
- Oryza sativa L.Oryza sativat0
- Treatment
- BX-112e3
- Outcome
- gibberellin (GA) biosynthesise3
- Qualifier
- at the 3β- and 2β-hydroxylation of GAse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Rice (Oryza sativa L.) Seedlings”
e3“These results suggest that BX-112 inhibits gibberellin (GA) biosynthesis in the rice plant at the 3β- and 2β-hydroxylation of GAs”
The same questions in other papers
prohexadione-calcium · growth · Oryza sativa (rice)Positive and negative results
6 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
5 papers more in this group
See all 9 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.