Abstract
Abstract The growth of wheat seedlings ( Triticum sativum ) is inhibited by abscisic acid (ABA). The inhibition increases with the concentration of ABA (from 10 ‐6 M to 5 × 10 ‐5 M ) and is stronger in the case of coleoptiles and first leaves than in roots. In contrast, naphthaleneacetic acid (ANA), at 10 ‐5 M , exerts its greatest inhibitory effect on the roots. The inhibitory effect of ABA on coleoptiles can be partially overcome by kinetin and to a much smaller degree by gibberellic acid. Neither of these two compounds, at 10 ‐5 M , had any effect on the ABA‐induced inhibition of root growth. The RNA and DNA contents per plant organ are considerably reduced after treatment of the seedlings with ABA, particularly in the coleoptiles and the first leaves. The incorporation of uracil‐2‐ 14 C and uridine T (G) into RNA of treated seedlings is reduced in the case of coleoptiles and first leaves, but considerably enhanced in roots. The mechanism of the action of ABA is discussed in the light of these results.
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Claims 9
Claim · model-written summary
ABA inhibited wheat seedling growth more strongly at higher concentrations.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- abscisic acid (ABA)e0
- Outcome
- growth of wheat seedlingse0
- Direction
- inhibitede0
- Value
- 10 ‐6 M to 5 × 10 ‐5 Me0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The growth of wheat seedlings ( Triticum sativum ) is inhibited by abscisic acid (ABA). The inhibition increases with the concentration of ABA (from 10 ‐6 M to 5 × 10 ‐5 M )”
Claim · model-written summary
ABA inhibited coleoptile and first-leaf growth more strongly than root growth.
- Taxon
- wheatTriticum aestivume1
- Organ / stage
- coleoptiles and first leavese0
- Treatment
- ABAe1
- Outcome
- inhibitione2
- Direction
- strongere0
- Comparator
- rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“is stronger in the case of coleoptiles and first leaves than in roots.”
t0“blé”
e1“The growth of wheat seedlings ( Triticum sativum ) is inhibited by abscisic acid (ABA).”
e2“The inhibition increases with the concentration of ABA”
Claim · model-written summary
Naphthaleneacetic acid at 10 ‐5 M inhibited roots most strongly.
- Taxon
- wheatTriticum aestivume1
- Treatment
- naphthaleneacetic acid (ANA), at 10 ‐5 Me0
- Outcome
- inhibitory effect on the rootse0
- Direction
- greateste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“naphthaleneacetic acid (ANA), at 10 ‐5 M , exerts its greatest inhibitory effect on the roots.”
t0“blé”
e1“The growth of wheat seedlings ( Triticum sativum ) is inhibited by abscisic acid (ABA).”
Claim · model-written summary
Kinetin partly overcame ABA inhibition of coleoptiles.
- Taxon
- wheatTriticum aestivume1
- Treatment
- kinetine0
- Outcome
- inhibitory effect of ABA on coleoptilese0
- Direction
- partially overcomee0
- Comparator
- ABAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The inhibitory effect of ABA on coleoptiles can be partially overcome by kinetin”
t0“blé”
e1“The growth of wheat seedlings ( Triticum sativum ) is inhibited by abscisic acid (ABA).”
Claim · model-written summary
Gibberellic acid overcame ABA inhibition of coleoptiles to a smaller degree.
- Taxon
- wheatTriticum aestivume1
- Treatment
- gibberellic acide0
- Outcome
- inhibitory effect of ABA on coleoptilese2
- Direction
- smallere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“and to a much smaller degree by gibberellic acid.”
t0“blé”
e1“The growth of wheat seedlings ( Triticum sativum ) is inhibited by abscisic acid (ABA).”
e2“The inhibitory effect of ABA on coleoptiles can be partially overcome by kinetin”
Claim · model-written summary
Neither kinetin nor gibberellic acid changed ABA inhibition of root growth at 10 ‐5 M.
- Taxon
- wheatTriticum aestivume1
- Treatment
- these two compounds, at 10 ‐5 Me0
- Outcome
- ABA‐induced inhibition of root growthe0
- Direction
- had any effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neither of these two compounds, at 10 ‐5 M , had any effect on the ABA‐induced inhibition of root growth.”
t0“blé”
e1“The growth of wheat seedlings ( Triticum sativum ) is inhibited by abscisic acid (ABA).”
Claim · model-written summary
ABA considerably reduced RNA and DNA contents per organ, especially in coleoptiles and first leaves.
- Taxon
- wheatTriticum aestivume1
- Organ / stage
- coleoptiles and the first leavese0
- Treatment
- ABAe0
- Outcome
- RNA and DNA contents per plant organe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The RNA and DNA contents per plant organ are considerably reduced after treatment of the seedlings with ABA, particularly in the coleoptiles and the first leaves.”
t0“blé”
e1“The growth of wheat seedlings ( Triticum sativum ) is inhibited by abscisic acid (ABA).”
Claim · model-written summary
ABA reduced labelled precursor incorporation into RNA in coleoptiles and first leaves.
- Taxon
- wheatTriticum aestivume1
- Organ / stage
- coleoptiles and first leavese0
- Treatment
- ABAe1
- Outcome
- incorporation of uracil‐2‐ 14 C and uridine T (G) into RNAe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The incorporation of uracil‐2‐ 14 C and uridine T (G) into RNA of treated seedlings is reduced in the case of coleoptiles and first leaves”
t0“blé”
e1“The growth of wheat seedlings ( Triticum sativum ) is inhibited by abscisic acid (ABA).”
Claim · model-written summary
ABA enhanced labelled precursor incorporation into RNA in roots.
- Taxon
- wheatTriticum aestivume1
- Organ / stage
- rootse0
- Treatment
- ABAe1
- Outcome
- incorporation of uracil‐2‐ 14 C and uridine T (G) into RNAe2
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but considerably enhanced in roots.”
t0“blé”
e1“The growth of wheat seedlings ( Triticum sativum ) is inhibited by abscisic acid (ABA).”
e2“The incorporation of uracil‐2‐ 14 C and uridine T (G) into RNA of treated seedlings is reduced in the case of coleoptiles and first leaves”
The same questions in other papers
(+)-abscisic acid · growth · Triticum aestivum (wheat)Results differ
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- positive
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See all 49 papers →kinetin · molecular: metabolites · Triticum aestivum (wheat)Positive and negative results
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- negative
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2 papers in the same direction as this paper · 8 in the opposite direction
- positive
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See all 11 papers →Gibberellic acid · molecular: metabolites · Triticum aestivum (wheat)Positive and negative results
9 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- negative
- no effect
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See all 13 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.