Abstract
Removal of 2 mm of the primary root tip of Pisum sativum caused a complete halt to primary root elongation, but did not alter the total number of laterals formed. The auxins indole-3-acetic acid and 1-naphthaleneacetic acid, when applied to the stump in a lanolin emulsion, increased the number of lateral roots. High levels of abscisic acid and low levels of the cytokinins N6-benzylaminopurine and N6-(γ, γ-dimethylallylamino)purine, and of the gibberellins GA3 and GA7, resulted in decreased lateral root production. Kinetin was without effect. There appears to be an inverse relationship between auxins and cytokinins in root/shoot growth coordination. Auxins, which are produced in the shoot tip, inhibit lateral bud growth but promote lateral root initiation. Cytokinins, which are produced in the root tip, inhibit lateral root initiation, but promote lateral stem growth.
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Claims 8
Claim · model-written summary
Removing 2 mm of the primary root tip of pea completely halted primary root elongation.
- Taxon
- Pisum sativum
Lathyrus oleraceuse1 - Treatment
- Removal of 2 mm of the primary root tipe1
- Outcome
- primary root elongatione1
- Direction
- complete halte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Removal of 2 mm of the primary root tip of Pisum sativum caused a complete halt to primary root elongation, but did not alter the total number of laterals formed”
Claim · model-written summary
Removing 2 mm of the primary root tip of pea did not alter the total number of laterals formed.
- Taxon
- Pisum sativumLathyrus oleraceuse1
- Treatment
- Removal of 2 mm of the primary root tipe1
- Outcome
- total number of lateralse1
- Direction
- did not altere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Removal of 2 mm of the primary root tip of Pisum sativum caused a complete halt to primary root elongation, but did not alter the total number of laterals formed”
Claim · model-written summary
Indole-3-acetic acid and 1-naphthaleneacetic acid applied to the pea stump increased the number of lateral roots.
- Taxon
- Pisum sativumLathyrus oleraceuse1
- Treatment
- indole-3-acetic acid and 1-naphthaleneacetic acide2
- Outcome
- number of lateral rootse2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“The auxins indole-3-acetic acid and 1-naphthaleneacetic acid, when applied to the stump in a lanolin emulsion, increased the number of lateral roots”
e1“Removal of 2 mm of the primary root tip of Pisum sativum caused a complete halt to primary root elongation, but did not alter the total number of laterals formed”
Claim · model-written summary
High levels of abscisic acid decreased lateral root production in pea.
- Taxon
- Pisum sativumLathyrus oleraceuse1
- Treatment
- High levels of abscisic acide3
- Outcome
- lateral root productione3
- Direction
- decreasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“High levels of abscisic acid and low levels of the cytokinins N6-benzylaminopurine and N6-(γ, γ-dimethylallylamino)purine, and of the gibberellins GA3 and GA7, resulted in decreased lateral root production”
e1“Removal of 2 mm of the primary root tip of Pisum sativum caused a complete halt to primary root elongation, but did not alter the total number of laterals formed”
Claim · model-written summary
Low levels of the cytokinins N6-benzylaminopurine and N6-(γ, γ-dimethylallylamino)purine decreased lateral root production in pea.
- Taxon
- Pisum sativumLathyrus oleraceuse1
- Treatment
- low levels of the cytokinins N6-benzylaminopurine and N6-(γ, γ-dimethylallylamino)purinee3
- Outcome
- lateral root productione3
- Direction
- decreasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“High levels of abscisic acid and low levels of the cytokinins N6-benzylaminopurine and N6-(γ, γ-dimethylallylamino)purine, and of the gibberellins GA3 and GA7, resulted in decreased lateral root production”
e1“Removal of 2 mm of the primary root tip of Pisum sativum caused a complete halt to primary root elongation, but did not alter the total number of laterals formed”
Claim · model-written summary
The gibberellins GA3 and GA7 decreased lateral root production in pea.
- Taxon
- Pisum sativumLathyrus oleraceuse1
- Treatment
- the gibberellins GA3 and GA7e3
- Outcome
- lateral root productione3
- Direction
- decreasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“High levels of abscisic acid and low levels of the cytokinins N6-benzylaminopurine and N6-(γ, γ-dimethylallylamino)purine, and of the gibberellins GA3 and GA7, resulted in decreased lateral root production”
e1“Removal of 2 mm of the primary root tip of Pisum sativum caused a complete halt to primary root elongation, but did not alter the total number of laterals formed”
Claim · model-written summary
Kinetin was without effect on lateral root production in pea.
- Taxon
- Pisum sativumLathyrus oleraceuse1
- Treatment
- Kinetine4
- Outcome
- lateral root productione4
- Direction
- without effecte4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“resulted in decreased lateral root production. Kinetin was without effect”
e1“Removal of 2 mm of the primary root tip of Pisum sativum caused a complete halt to primary root elongation, but did not alter the total number of laterals formed”
Claim · model-written summary
There appears to be an inverse relationship between auxins and cytokinins in pea root/shoot growth coordination.
- Taxon
- Pisum sativumLathyrus oleraceuse1
- Treatment
- auxinse5
- Outcome
- root/shoot growth coordinatione5
- Direction
- inverse relationshipe5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“There appears to be an inverse relationship between auxins and cytokinins in root/shoot growth coordination”
e1“Removal of 2 mm of the primary root tip of Pisum sativum caused a complete halt to primary root elongation, but did not alter the total number of laterals formed”
The same questions in other papers
kinetin · yield · Lathyrus oleraceus (pea)Results agree
2 papers in the same direction as this paper
- negative
- 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.