Abstract
The interaction between exogenous 2-chloroethylphosphonic acid (Ethrel, CEPA) and auxin (both native and synthetic—IAA) was studied on pea and bean seedlings, potato tubers, and processed flax plants. After the addition of ethrel the inhibiting effect of IAA was decreased in all objects and it was found that the concentration of the growth of the regulators played an important role. The growth response of a part of flax hypocotyl, as induced by exogenous auxin produced in the cotyledon, was reversed by ethrel, too. The application of ethrel on the epicotyl apex in beans resulted in the lost of apical dominance of epicotyl and in the growth of lateral buds together with the epicotyl. When stimulating the growth, ethrel reverses the inhibitions through the decrease in the auxin content (from an inhibiting, supraoptimum level to an optimum one which already stimulates growth). In objects with a low content of endogenous auxin the ethrel induced the decrease in the auxin content and shows an inhibiting effect on growth.
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Claims 10
Claim · model-written summary
Ethrel decreased the inhibitory effect of IAA in pea.
- Taxon
- pea
Lathyrus oleraceuse7 - Treatment
- ethrele0
- Outcome
- inhibiting effect of IAAe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After the addition of ethrel the inhibiting effect of IAA was decreased in all objects”
e7“pea and bean seedlings, potato tubers, and processed flax plants”
Claim · model-written summary
Ethrel decreased the inhibitory effect of IAA in bean.
Not reportedComparator
Verbatim
e0“After the addition of ethrel the inhibiting effect of IAA was decreased in all objects”
e7“pea and bean seedlings, potato tubers, and processed flax plants”
Claim · model-written summary
Ethrel decreased the inhibitory effect of IAA in potato.
- Taxon
- potato
Solanum tuberosume7 - Treatment
- ethrele0
- Outcome
- inhibiting effect of IAAe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After the addition of ethrel the inhibiting effect of IAA was decreased in all objects”
e7“pea and bean seedlings, potato tubers, and processed flax plants”
Claim · model-written summary
Ethrel decreased the inhibitory effect of IAA in flax.
- Taxon
- flax
Linum usitatissimume7 - Treatment
- ethrele0
- Outcome
- inhibiting effect of IAAe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After the addition of ethrel the inhibiting effect of IAA was decreased in all objects”
e7“pea and bean seedlings, potato tubers, and processed flax plants”
Claim · model-written summary
Ethrel reversed auxin-induced growth response in a flax hypocotyl segment.
- Taxon
- flaxLinum usitatissimume0
- Treatment
- ethrele0
- Outcome
- growth response of a part of flax hypocotyle0
- Direction
- reversede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The growth response of a part of flax hypocotyl, as induced by exogenous auxin produced in the cotyledon, was reversed by ethrel, too.”
Claim · model-written summary
Ethrel on the bean epicotyl apex removed apical dominance.
Not reportedComparator
Verbatim
e0“The application of ethrel on the epicotyl apex in beans resulted in the lost of apical dominance of epicotyl and in the growth of lateral buds together with the epicotyl.”
Claim · model-written summary
Ethrel on the bean epicotyl apex induced lateral-bud growth.
Not reportedComparator
Verbatim
e0“The application of ethrel on the epicotyl apex in beans resulted in the lost of apical dominance of epicotyl and in the growth of lateral buds together with the epicotyl.”
Claim · model-written summary
Ethrel reduced supraoptimal auxin content to a growth-promoting level.
Verbatim
e0“When stimulating the growth, ethrel reverses the inhibitions through the decrease in the auxin content (from an inhibiting, supraoptimum level to an optimum one which already stimulates growth).”
e7“pea and bean seedlings, potato tubers, and processed flax plants”
Claim · model-written summary
Where endogenous auxin was low, ethrel lowered auxin content.
- Taxon
- pea and bean seedlings, potato tubers, and processed flax plantse7
- Treatment
- ethrele0
- Outcome
- auxin contente0
- Direction
- decreasee0
Not reportedComparator
Verbatim
e0“In objects with a low content of endogenous auxin the ethrel induced the decrease in the auxin content and shows an inhibiting effect on growth.”
e7“pea and bean seedlings, potato tubers, and processed flax plants”
Claim · model-written summary
Where endogenous auxin was low, ethrel inhibited growth.
- Taxon
- pea and bean seedlings, potato tubers, and processed flax plantse7
- Treatment
- ethrele0
- Outcome
- growthe0
- Direction
- inhibitinge0
Not reportedComparator
Verbatim
e0“In objects with a low content of endogenous auxin the ethrel induced the decrease in the auxin content and shows an inhibiting effect on growth.”
e7“pea and bean seedlings, potato tubers, and processed flax plants”
The same questions in other papers
(2-chloroethyl)phosphonic acid · growth · Phaseolus vulgaris (common bean)Positive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
1 paper more in this group
See all 5 papers →(2-chloroethyl)phosphonic acid · molecular: metabolites · Solanum tuberosum (potato)Results agree
1 paper in the same direction as this paper
- positive
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.