Nighttime Sugar Starvation Orchestrates Gibberellin Biosynthesis and Plant Growth in Arabidopsis
| Autor: | Pierdomenico Perata, Giacomo Novi, Joost T. van Dongen, Nello Ceccarelli, Lorenzo Mariotti, Silvia Gonzali, Katharina Kölling, Sandro Parlanti, Eleonora Paparelli, Samuel C. Zeeman |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Photoperiod
Arabidopsis Plant Science Biology Carbohydrate metabolism Photosynthetic efficiency Photosynthesis Plant Growth Regulators Botany Arabidopsis thaliana Sugar Research Articles Alkyl and Aryl Transferases Arabidopsis Proteins fungi food and beverages Starch Cell Biology Darkness Plants Genetically Modified biology.organism_classification Gibberellins Gene Knockdown Techniques Carbohydrate Metabolism Gibberellin Plant hormone |
| Popis: | A plant's eventual size depends on the integration of its genetic program with environmental cues, which vary on a daily basis. Both efficient carbon metabolism and the plant hormone gibberellin are required to guarantee optimal plant growth. Yet, little is known about the interplay between carbon metabolism and gibberellins that modulates plant growth. Here, we show that sugar starvation in Arabidopsis thaliana arising from inefficient starch metabolism at night strongly reduces the expression of ent-kaurene synthase, a key regulatory enzyme for gibberellin synthesis, the following day. Our results demonstrate that plants integrate the efficiency of photosynthesis over a period of days, which is transduced into a daily rate of gibberellin biosynthesis. This enables a plant to grow to a size that is compatible with its environment. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|