Abstract
We have partially characterized root hydrotropism of an agravitropic pea mutant, ageotropum (from Pisum sativum L. cv. Weibull's Weitor), without interference of gravitropism. Lowering the atmospheric air humidity inhibited root elongation and caused root curvature toward the moisture‐saturated substrate in ageotropum pea. Removal of root tips approximately 1.5 mm in length blocked the hydrotropic response. A computer‐assisted image analysis showed that the hydrotropic curvature in the roots of ageotropum pea was chiefly due to a greater inhibition of elongation on the humid side than the dry side of the roots. Similarly, gravitropic curvature of Alaska pea roots resulted from inhibition of elongation on the lower side of the horizontally placed roots, while the upper side of the roots maintained a normal growth rate. Gravitropic bending of Alaska pea roots was apparent 30 min after stimulation, whereas differential growth as well as curvature in positive root hydrotropism of ageotropum pea became visible 4–5 h after the continuous hydrostimulation. Application of 2,3,5‐triiodobenzoic acid or ethyleneglycol‐bis‐( β ‐aminoethylether)‐N,N,N',N'‐tetraacetic acid was inhibitory to both root hydrotropism of ageotropum pea and root gravitropism of Alaska pea. Some mutual response mechanism for both hydrotropism and gravitropism may exist in roots, although the stimulusperception mechanisms differ from one another.
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Claims 11
Claim · model-written summary
Lower air humidity inhibited root elongation in ageotropum pea.
- Taxon
- pea
Lathyrus oleraceuse0 - Material
- ageotropume0
- Treatment
- Lowering the atmospheric air humiditye0
- Outcome
- root elongatione0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lowering the atmospheric air humidity inhibited root elongation and caused root curvature toward the moisture‐saturated substrate in ageotropum pea.”
Claim · model-written summary
Lower air humidity caused root curvature toward the moisture‐saturated substrate in ageotropum pea.
- Taxon
- peaLathyrus oleraceuse0
- Material
- ageotropume0
- Treatment
- Lowering the atmospheric air humiditye0
- Outcome
- root curvature toward the moisture‐saturated substratee0
- Direction
- causede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lowering the atmospheric air humidity inhibited root elongation and caused root curvature toward the moisture‐saturated substrate in ageotropum pea.”
Claim · model-written summary
Root tip removal blocked hydrotropism in ageotropum pea.
- Taxon
- peaLathyrus oleraceust0
- Material
- ageotropumt0
- Treatment
- Removal of root tips approximately 1.5 mm in lengthe0
- Outcome
- hydrotropic responsee0
- Direction
- blockede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Removal of root tips approximately 1.5 mm in length blocked the hydrotropic response.”
t0“pea mutant, ageotropum”
Claim · model-written summary
Ageotropum root hydrotropism resulted chiefly from stronger elongation inhibition on the humid side.
- Taxon
- peaLathyrus oleraceuse0
- Material
- ageotropume0
- Outcome
- hydrotropic curvaturee0
- Qualifier
- greater inhibition of elongation on the humid side than the dry sidee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the hydrotropic curvature in the roots of ageotropum pea was chiefly due to a greater inhibition of elongation on the humid side than the dry side of the roots.”
Claim · model-written summary
Alaska pea root gravitropism resulted from inhibited elongation on the lower side.
- Taxon
- peaLathyrus oleraceuse0
- Material
- Alaskae0
- Outcome
- gravitropic curvaturee0
- Qualifier
- inhibition of elongation on the lower sidee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“gravitropic curvature of Alaska pea roots resulted from inhibition of elongation on the lower side of the horizontally placed roots, while the upper side of the roots maintained a normal growth rate.”
Claim · model-written summary
Gravitropic bending appeared after 30 min in Alaska pea.
- Taxon
- peaLathyrus oleraceuse0
- Material
- Alaskae0
- Outcome
- Gravitropic bendinge0
- Value
- 30 mine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gravitropic bending of Alaska pea roots was apparent 30 min after stimulation, whereas differential growth as well as curvature in positive root hydrotropism of ageotropum pea became visible 4–5 h after the continuous hydrostimulation.”
Claim · model-written summary
differential growth as well as curvature appeared after 4–5 h in ageotropum pea.
- Taxon
- peaLathyrus oleraceuse0
- Material
- ageotropume0
- Outcome
- differential growth as well as curvaturee0
- Value
- 4–5 he0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gravitropic bending of Alaska pea roots was apparent 30 min after stimulation, whereas differential growth as well as curvature in positive root hydrotropism of ageotropum pea became visible 4–5 h after the continuous hydrostimulation.”
Claim · model-written summary
2,3,5‐triiodobenzoic acid inhibited root hydrotropism in ageotropum pea.
- Taxon
- peaLathyrus oleraceuse0
- Material
- ageotropume0
- Treatment
- 2,3,5‐triiodobenzoic acide0
- Outcome
- root hydrotropisme0
- Direction
- inhibitorye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 2,3,5‐triiodobenzoic acid or ethyleneglycol‐bis‐( β ‐aminoethylether)‐N,N,N',N'‐tetraacetic acid was inhibitory to both root hydrotropism of ageotropum pea and root gravitropism of Alaska pea.”
Claim · model-written summary
2,3,5‐triiodobenzoic acid inhibited root gravitropism in Alaska pea.
- Taxon
- peaLathyrus oleraceuse0
- Material
- Alaskae0
- Treatment
- 2,3,5‐triiodobenzoic acide0
- Outcome
- root gravitropisme0
- Direction
- inhibitorye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 2,3,5‐triiodobenzoic acid or ethyleneglycol‐bis‐( β ‐aminoethylether)‐N,N,N',N'‐tetraacetic acid was inhibitory to both root hydrotropism of ageotropum pea and root gravitropism of Alaska pea.”
Claim · model-written summary
ethyleneglycol‐bis‐( β ‐aminoethylether)‐N,N,N',N'‐tetraacetic acid inhibited root hydrotropism in ageotropum pea.
- Taxon
- peaLathyrus oleraceuse0
- Material
- ageotropume0
- Treatment
- ethyleneglycol‐bis‐( β ‐aminoethylether)‐N,N,N',N'‐tetraacetic acide0
- Outcome
- root hydrotropisme0
- Direction
- inhibitorye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 2,3,5‐triiodobenzoic acid or ethyleneglycol‐bis‐( β ‐aminoethylether)‐N,N,N',N'‐tetraacetic acid was inhibitory to both root hydrotropism of ageotropum pea and root gravitropism of Alaska pea.”
Claim · model-written summary
ethyleneglycol‐bis‐( β ‐aminoethylether)‐N,N,N',N'‐tetraacetic acid inhibited root gravitropism in Alaska pea.
- Taxon
- peaLathyrus oleraceuse0
- Material
- Alaskae0
- Treatment
- ethyleneglycol‐bis‐( β ‐aminoethylether)‐N,N,N',N'‐tetraacetic acide0
- Outcome
- root gravitropisme0
- Direction
- inhibitorye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 2,3,5‐triiodobenzoic acid or ethyleneglycol‐bis‐( β ‐aminoethylether)‐N,N,N',N'‐tetraacetic acid was inhibitory to both root hydrotropism of ageotropum pea and root gravitropism of Alaska pea.”
The same questions in other papers
humidity · growth · Lathyrus oleraceus (pea)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- 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.