[SCAN] The metabolic gears of plant circadian rhythms
Cleverson Matiolli
| When |
29 Jul, 2020
from
12:00 pm to 01:00 pm |
|---|---|
| Where | ITQB NOVA Virtual Auditorium |
| Contact Name | Rita Abranches |
| Add event to your calendar |
iCal
|
Title: The metabolic gears of plant circadian rhythms
Speaker: Cleverson Matiolli
Affiliation: Isabel Abreu Lab
Abstract: An important factor that impacts productivity is the synchronization of biological rhythms with the external cues. Plants are able to predict recurrent daily environmental occurrences, such as the dawn and dusk, as well as seasonal changes in day length, by employing transcriptional-translational feedback loops that comprises the circadian clock oscillator. The major properties of the circadian oscillator are: 1. The ability to be entrained by external cues – or zeitgebers such as light and temperature; 2. To maintain a period of approximately 24 hours under free-running conditions, _i.e._ in the absence of entrainment cues, and; 3. To set a specific time to respond to stimuli, a phenomenon known as “gating”. The circadian oscillator controls physiological and developmental processes mainly through transcriptional regulation of a myriad of stress- and development-related genes. Therefore, the circadian clock plays a fundamental role in timely adjusting physiological processes according with the daytime or season, which is essential for optimization of plant growth. We recently demonstrated that sugars derived from photosynthesis, a metabolic input into the oscillator, adjust the circadian clock and can be described as the “metabolic dawn”. The finding open a new window to explore the interface between the daily metabolic rhythms and the plant ability to deal with environmental stress, optimizing plant growth and productivity. I will present the research that demonstrated one of the pathways to convey metabolic information to the entrainment of the plant circadian clock, and the impact on carbon metabolism and growth. In the last part of this seminar, I will discuss the first steps and future perspectives of my research in PRPlants-ITQB, which focus on the pathways connecting metabolism, circadian rhythms and tolerance to cold and salt stress in rice.
Zoom webinar - ITQB NOVA Virtual auditorium
