Abstract
The dependence of auxin‐induced growth on continued cell wall synthesis was investigated in stem segments of etiolated pea ( Pisum sativum L. cv. Alaska) seedlings using the cell wall synthesis inhibitors monensin and 2,6‐dichlorobenzonitrile (DCB). Monensin (5 μ M ) potently inhibited indole‐3‐acetic acid (IAA)‐induced growth, particularly during the second hour of treatment, whereas growth in fusicoccin (FC) was inhibited much less effectively. Incorporation of [ 14 C]‐glucose into both matrix and cellulose fractions of the wall showed a sharp increase beginning after about 60 min, this rise being promoted by both IAA and FC. Monensin inhibited this rise in incorporation of label and completely removed the promotion of this by IAA, although some promotion by FC remained. Monensin inhibited incorporation into cellulose in a manner similar to that into matrix, but the use of the apparently specific cellulose synthesis inhibitor DCB showed that cellulose synthesis could be strongly inhibited without effect on growth, at least in the short term. The results support the view that sustained auxin‐induced growth depends upon the incorporation of new matrix cell wall components into the wall.
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Claims 7
Claim · model-written summary
Monensin inhibited IAA-induced pea growth, especially in the second hour.
- Taxon
- pea
Lathyrus oleraceust0 - Treatment
- Monensin (5 μ M )e0
- Outcome
- indole‐3‐acetic acid (IAA)‐induced growthe0
- Direction
- inhibitede0
- Qualifier
- particularly during the second hour of treatmente0
- Comparator
- fusicoccin (FC)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Monensin (5 μ M ) potently inhibited indole‐3‐acetic acid (IAA)‐induced growth, particularly during the second hour of treatment, whereas growth in fusicoccin (FC) was inhibited much less effectively.”
t0“etiolated pea ( Pisum sativum L. cv. Alaska) seedlings”
Claim · model-written summary
Monensin inhibited fusicoccin growth much less effectively.
- Taxon
- peaLathyrus oleraceust0
- Treatment
- Monensine0
- Outcome
- growth in fusicoccin (FC)e0
- Direction
- inhibited much less effectivelye0
- Comparator
- indole‐3‐acetic acid (IAA)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Monensin (5 μ M ) potently inhibited indole‐3‐acetic acid (IAA)‐induced growth, particularly during the second hour of treatment, whereas growth in fusicoccin (FC) was inhibited much less effectively.”
t0“etiolated pea ( Pisum sativum L. cv. Alaska) seedlings”
Claim · model-written summary
IAA and FC promoted a rise in labeled glucose incorporation into wall matrix and cellulose after about 60 minutes.
- Taxon
- peaLathyrus oleraceust0
- Treatment
- IAA and FCe0
- Outcome
- Incorporation of [ 14 C]‐glucose into both matrix and cellulose fractions of the walle0
- Direction
- sharp increasee0
- Qualifier
- beginning after about 60 mine0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Incorporation of [ 14 C]‐glucose into both matrix and cellulose fractions of the wall showed a sharp increase beginning after about 60 min, this rise being promoted by both IAA and FC.”
t0“etiolated pea ( Pisum sativum L. cv. Alaska) seedlings”
Claim · model-written summary
Monensin inhibited label incorporation and eliminated IAA promotion, while some FC promotion persisted.
- Taxon
- peaLathyrus oleraceust0
- Treatment
- Monensine0
- Outcome
- incorporation of labele0
- Direction
- inhibitede0
- Comparator
- IAAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Monensin inhibited this rise in incorporation of label and completely removed the promotion of this by IAA, although some promotion by FC remained.”
t0“etiolated pea ( Pisum sativum L. cv. Alaska) seedlings”
Claim · model-written summary
Monensin inhibited cellulose incorporation similarly to matrix incorporation.
- Taxon
- peaLathyrus oleraceust0
- Treatment
- Monensine0
- Outcome
- incorporation into cellulosee0
- Direction
- inhibitede0
- Comparator
- matrixe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Monensin inhibited incorporation into cellulose in a manner similar to that into matrix”
t0“etiolated pea ( Pisum sativum L. cv. Alaska) seedlings”
Claim · model-written summary
DCB strongly inhibited cellulose synthesis without short-term growth effects.
- Taxon
- peaLathyrus oleraceust0
- Treatment
- DCBe0
- Outcome
- cellulose synthesise0
- Direction
- strongly inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the use of the apparently specific cellulose synthesis inhibitor DCB showed that cellulose synthesis could be strongly inhibited without effect on growth, at least in the short term.”
t0“etiolated pea ( Pisum sativum L. cv. Alaska) seedlings”
Claim · model-written summary
The findings support dependence of sustained auxin growth on incorporation of new matrix components.
- Taxon
- peaLathyrus oleraceust0
- Outcome
- sustained auxin‐induced growthe0
- Qualifier
- incorporation of new matrix cell wall components into the walle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results support the view that sustained auxin‐induced growth depends upon the incorporation of new matrix cell wall components into the wall.”
t0“etiolated pea ( Pisum sativum L. cv. Alaska) seedlings”
The same questions in other papers
fusicoccin · molecular: metabolites · Lathyrus oleraceus (pea)Positive and negative results
1 in the opposite direction
- no effect
indole-3-acetic acid · molecular: metabolites · Lathyrus oleraceus (pea)Positive and negative results
11 papers in the same direction as this paper · 6 in the opposite direction · 1 reporting no difference from an alternative
- positive
- positive
- negative
15 papers more in this group
See all 19 papers →monensin A · molecular: metabolites · Lathyrus oleraceus (pea)Results agree
1 paper in the same direction as this paper
- negative
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.