Abstract
1ndoleacetic acid was oxidized under oxygen atmosphere by the c n d e enzyme solution prepared by blending rice husk in buffer solution of pH 7.3.The major oxidation products (3, 4, and 5), characterized by physical and chemical methods, showed little effects on germination and growth of lettuce seeds while IAA inhibited completely the germination at 5 ppm.This evidence suggests that the amounts of IAA in embryos decreases due to the oxidation by water soluble oxidation enzyme existing in rice husk.The decrease of IAA may be related, in some aspect, to dormancy breaking and also preharvest sprouting of rice seeds.The synthesis and optical resolution of 2 was also achieved.In the course of our search of growth regulators in rice seeds, we have characterized indoleacetic acid (IAA,
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Claims 5
Claim · model-written summary
Indoleacetic acid was oxidized under oxygen by a crude enzyme solution prepared from rice husk.
- Taxon
- rice
Oryza sativae0 - Organ / stage
- rice huske0
- Outcome
- 1ndoleacetic acid was oxidizede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1ndoleacetic acid was oxidized under oxygen atmosphere by the c n d e enzyme solution prepared by blending rice husk in buffer solution of pH 7.3”
Claim · model-written summary
The major oxidation products of IAA showed little effect on germination and growth of lettuce seeds.
- Taxon
- lettuce
Lactuca sativae1 - Treatment
- major oxidation products (3, 4, and 5)e0
- Outcome
- germination and growth of lettuce seedse1
- Direction
- little effectse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The major oxidation products (3, 4, and 5)”
e1“showed little effects on germination and growth of lettuce seeds”
Claim · model-written summary
IAA at 5 ppm completely inhibited germination of lettuce seeds.
- Taxon
- lettuceLactuca sativae1
- Treatment
- IAAe0
- Outcome
- germinatione0
- Direction
- inhibited completelye0
- Value
- 5 ppme0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“IAA inhibited completely the germination at 5 ppm”
e1“lettuce seeds”
Claim · model-written summary
The authors suggest that the amount of IAA in embryos decreases because of oxidation by a water-soluble oxidation enzyme present in rice husk.
- Taxon
- riceOryza sativae0
- Organ / stage
- embryose0
- Gene
- water soluble oxidation enzymee0
- Outcome
- amounts of IAA in embryose0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the amounts of IAA in embryos decreases due to the oxidation by water soluble oxidation enzyme existing in rice husk”
Claim · model-written summary
The decrease of IAA may be related to dormancy breaking and preharvest sprouting of rice seeds.
- Taxon
- riceOryza sativae0
- Compound
- IAAe0
- Outcome
- dormancy breaking and also preharvest sproutinge0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The decrease of IAA may be related, in some aspect, to dormancy breaking and also preharvest sprouting of rice seeds”
The same questions in other papers
indole-3-acetic acid · growth · Lactuca sativa (garden lettuce)Results differ
3 papers in the same direction as this paper · 8 in the opposite direction
- positive
- positive
- positive
8 papers more in this group
See all 12 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.