The root as a drill
| Autor: | Yellamaraju Sreelakshmi, Parankusam Santisree, Sapana Nongmaithem, Maria G. Ivanchenko, Rameshwar Sharma |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Cyclopropanes
Ethylene Plant Science Plant Roots Soil chemistry.chemical_compound Nutrient Solanum lycopersicum Plant Growth Regulators Auxin Botany Plant Proteins chemistry.chemical_classification Indoleacetic Acids biology Plant roots fungi food and beverages Biological Transport Penetration (firestop) Ethylenes biology.organism_classification chemistry Seedlings Seedling Mutation Biophysics Signal Transduction Perspectives |
| Zdroj: | Plant Signaling & Behavior. 7:151-156 |
| ISSN: | 1559-2324 |
| DOI: | 10.4161/psb.18936 |
| Popis: | Plant roots forage the soil for water and nutrients and overcome the soil’s physical compactness. Roots are endowed with a mechanism that allows them to penetrate and grow in dense media such as soil. However, the molecular mechanisms underlying this process are still poorly understood. The nature of the media in which roots grow adds to the difficulty to in situ analyze the mechanisms underlying root penetration. Inhibition of ethylene perception by application of 1-methyl cyclopropene (1-MCP) to tomato seedlings nearly abolished the root penetration in Soilrite. The reversal of this process by auxin indicated operation of an auxin-ethylene signaling pathway in the regulation of root penetration. The tomato pct1–2 mutant that exhibits an enhanced polar transport of auxin required higher doses of 1-MCP to inhibit root penetration, indicating a pivotal role of auxin transport in this process. In this update we provide a brief review of our current understanding of molecular processes underlying root penetration in higher plants. |
| Databáze: | OpenAIRE |
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