Claim · model-written summary
Growth of lateral roots is inhibited by the main apex.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- main apexe3
- Outcome
- growth of lateral rootse3
- Direction
- inhibitede3
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The curve of growth in length of the main axis of excised tomato roots, grown in a 6-day passage, shows a 'lag phase' at the beginning and a decrease in growth rate toward the end of the passage when growth of the apex is inhibited by the older tissues”
e3“it is concluded that the growth of lateral roots is promoted by the presence of older tissues and inhibited by the main apex and younger parts of the main axis”
Title
THE GROWTH CURVE AND GROWTH CORRELATIONS OF EXCISED TOMATO ROOTS GROWN IN STERILE CULTURE
William G. Boll Canadian Journal of Botany 1965. doi:10.1139/b65-031
Other claims from this paper (13)
- Observation Growth in length of the main axis of excised tomato roots shows a lag phase at the beginning of the passage.
- Association Growth rate of excised tomato roots decreases toward the end of the passage when the apex is inhibited by older tissues.
- Intervention effect The lag phase is not due to transfer of the excised tip to fresh medium.
- Intervention effect The lag phase is not a consequence of the developmental stage at which the tip is excised.
- Mechanism The lag phase may mean that the apical meristem requires substances supplied by the older tissues.
- Mechanism The lag phase is, at least in part, due to injurious effects of excision.
- Intervention effect Growth of lateral roots is promoted by the presence of older tissues.
- Intervention effect Growth of lateral roots is inhibited by younger parts of the main axis.
- Intervention effect Dichloroanisole (DCA) increased growth of the main axis.
- Intervention effect Indolylacetic acid (IAA) inhibited growth of lateral roots at concentrations that did not affect the main axis.
- Intervention effect DCA inhibited growth of lateral roots at concentrations that did not affect the main axis.
- Intervention effect 1-naphthaleneacetic acid (NAA) did not show the lateral root inhibition effect.
- Intervention effect At concentrations that did not affect the main axis, only NAA promoted formation of lateral roots.