Abstract
The effects of 1 p M –10 μ M 24‐epibrassinolide presented to apical and basal regions of excised roots of tomato ( Lycopersicon esculentum Mill. cv. Best of All) grown aseptically in a two‐well culture vessel have been investigated. Only inhibitory effects were observed and only at 0. 1 μ M or greater. At 10 μ M basally‐ and apically‐applied epibrassinolide inhibited growth in apical regions, but not in basal regions. Lower concentrations (1 and 0. 1 μ M ) also inhibited growth, again only in apical regions and usually only when presented directly to those regions. Cultured tomato roots therefore appear to transport epibrassinolide acropetally, but whether they do so basipetally is not yet clear. The reduced responsiveness to epibrassinolide observed in roots grown by this method is thought to be due to the larger inoculum used rather than the physiological age of the roots. There was some evidence that the sensitivity of cultured roots to epibrassinolide is directly related to growth rate
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
Epibrassinolide inhibited root growth only at 0. 1 μ M or above.
Not reportedTaxonComparator
Verbatim
e0“Only inhibitory effects were observed and only at 0. 1 μ M or greater.”
Claim · model-written summary
At 10 μ M, basal and apical application inhibited growth in apical regions, but not basal regions.
- Treatment
- 10 μ M basally‐ and apically‐applied epibrassinolidee0
- Outcome
- growth in apical regionse0
- Direction
- inhibitede0
- Comparator
- basal regionse0
Not reportedTaxon
Verbatim
e0“At 10 μ M basally‐ and apically‐applied epibrassinolide inhibited growth in apical regions, but not in basal regions.”
Claim · model-written summary
At 1 μ M, epibrassinolide inhibited apical region growth, usually with direct presentation.
- Treatment
- 1e0
- Outcome
- growthe0
- Direction
- inhibitede0
- Qualifier
- only in apical regions and usually only when presented directly to those regionse0
Not reportedTaxonComparator
Verbatim
e0“Lower concentrations (1 and 0. 1 μ M ) also inhibited growth, again only in apical regions and usually only when presented directly to those regions.”
Claim · model-written summary
At 0. 1 μ M, epibrassinolide inhibited apical region growth, usually with direct presentation.
Not reportedTaxonComparator
Verbatim
e0“Lower concentrations (1 and 0. 1 μ M ) also inhibited growth, again only in apical regions and usually only when presented directly to those regions.”
Claim · model-written summary
Cultured tomato roots appear to transport epibrassinolide acropetally.
- Taxon
- tomato
Solanum lycopersicume0 - Outcome
- transport epibrassinolide acropetallye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cultured tomato roots therefore appear to transport epibrassinolide acropetally”
Claim · model-written summary
Authors attribute reduced epibrassinolide responsiveness to larger inoculum.
Not reportedTaxon
Verbatim
e0“reduced responsiveness to epibrassinolide observed in roots grown by this method is thought to be due to the larger inoculum used rather than the physiological age of the roots”
Claim · model-written summary
Cultured root sensitivity to epibrassinolide may be directly related to growth rate.
Not reportedTaxonDirection
Verbatim
e0“sensitivity of cultured roots to epibrassinolide is directly related to growth rate”