Journal of experimental botany, 2012-07, Vol.63 (12), p.4539-4547
2012
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Details
- Autor(en) / Beteiligte
- Titel
- effects of auxin and strigolactones on tuber initiation and stolon architecture in potato
- Ist Teil von
- Journal of experimental botany, 2012-07, Vol.63 (12), p.4539-4547
- Ort / Verlag
- Oxford: Oxford University Press [etc.]
- Erscheinungsjahr
- 2012
- Quelle
- MEDLINE
- Beschreibungen/Notizen
- Various transcriptional networks and plant hormones have been implicated in controlling different aspects of potato tuber formation. Due to its broad impact on many plant developmental processes, a role for auxin in tuber initiation has been suggested but never fully resolved. Here, auxin concentrations were measured throughout the plant prior to and during the process of tuber formation. Auxin levels increase dramatically in the stolon prior to tuberization and remain relatively high during subsequent tuber growth, suggesting a promoting role for auxin in tuber formation. Furthermore, in vitro tuberization experiments showed higher levels of tuber formation from axillary buds of explants where the auxin source (stolon tip) had been removed. This phenotype could be rescued by application of auxin on the ablated stolon tips. In addition, a synthetic strigolactone analogue applied on the basal part of the stolon resulted in fewer tubers. The experiments indicate that a system for the production and directional transport of auxin exists in stolons and acts synergistically with strigolactones to control the outgrowth of the axillary stolon buds, similar to the control of above-ground shoot branching.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 0022-0957eISSN: 1460-2431DOI: 10.1093/jxb/ers132Titel-ID: cdi_wageningen_narcis_oai_library_wur_nl_wurpubs_428020
- Format
- –
- Schlagworte
- arabidopsis, Auxins, Biological and medical sciences, Biological Transport, Biosynthesis, branching, buds, Developmental biology, Drug Synergism, explants, Fundamental and applied biological sciences. Psychology, Gene Expression Regulation, Plant - drug effects, gene-expression, Genes, growth, identification, Indoleacetic Acids - analysis, Indoleacetic Acids - antagonists & inhibitors, Indoleacetic Acids - metabolism, key role, Lactones - analysis, Lactones - metabolism, Phenotype, plant, Plant growth regulators, Plant Growth Regulators - analysis, Plant Growth Regulators - antagonists & inhibitors, Plant Growth Regulators - metabolism, plant hormones, Plant Leaves - drug effects, Plant Leaves - growth & development, Plant Leaves - metabolism, Plant physiology and development, Plant Proteins - genetics, Plant Proteins - metabolism, Plant roots, Plant Roots - drug effects, Plant Roots - growth & development, Plant Roots - metabolism, Plant Stems - drug effects, Plant Stems - growth & development, Plant Stems - metabolism, Plant Tubers - drug effects, Plant Tubers - genetics, Plant Tubers - growth & development, Plant Tubers - metabolism, Plants, Plants, Genetically Modified, potatoes, RESEARCH PAPER, shoots, Solanum tuberosum - drug effects, Solanum tuberosum - genetics, Solanum tuberosum - growth & development, Solanum tuberosum - metabolism, solanum-tuberosum, Stolons, Swelling, transcription (genetics), transport, Triiodobenzoic Acids - pharmacology, tuberization, Tubers