Tesi etd-10162024-145816
Link copiato negli appunti
Tipo di tesi
Corso Ordinario Secondo Livello
Autore
OLMI, EMMA
URN
etd-10162024-145816
Titolo
Inactivation of the anaerobic response during reoxygenation in Arabidopsis thaliana
Struttura
Classe Scienze Sperimentali
Corso di studi
SCIENZE AGRARIE E BIOTECNOLOGIE - SCIENZE AGRARIE E BIOTECNOLOGIE
Commissione
relatore PERATA, PIERDOMENICO
Presidente Prof.ssa MENSUALI, ANNA
Membro Dott.ssa FRANCINI, ALESSANDRA
Membro Dott. CARLESI, STEFANO
Membro Prof. DELL'ACQUA, MATTEO
Membro Prof.ssa PUCCIARIELLO, CHIARA
Membro Dott.ssa BARTOLINI, SUSANNA
Membro Dott.ssa BURBI, SARA
Membro Dott. ROSSETTO, RUDY
Presidente Prof.ssa MENSUALI, ANNA
Membro Dott.ssa FRANCINI, ALESSANDRA
Membro Dott. CARLESI, STEFANO
Membro Prof. DELL'ACQUA, MATTEO
Membro Prof.ssa PUCCIARIELLO, CHIARA
Membro Dott.ssa BARTOLINI, SUSANNA
Membro Dott.ssa BURBI, SARA
Membro Dott. ROSSETTO, RUDY
Parole chiave
- Nessuna parola chiave trovata
Data inizio appello
10/12/2024;
Disponibilità
parziale
Riassunto analitico
Plants often experience low oxygen conditions as a consequence of flooding or waterlogging. Flooding is one of the main causes for agricultural losses as it limits crop productivity in many regions of the world. Research on the morphological, metabolic and molecular responses of plants under oxygen deficiency dates back to 60 years ago. The accumulated information on these adaptative responses during the hypoxia phase contrasts with the limited knowledge on the recovery process that occurs after reoxygenation. Once the hypoxic stress is overcome, plants should respond quickly in inactivating hypoxic response and restoring aerobic metabolism, since it is much more efficient in energy production compared to the anaerobic one. The study of the hypoxia-reoxygenation transition has its significance on the agricultural sector, as plants are increasingly exposed to this kind of stress due to climate change.
The aim of this study was to evaluate the time it takes for the plant to detect the return of oxygen and inactivate the transcription of HRGs upon reoxygenation.
Another aspect of interest in this study concerns the role of photosynthesis during the recovery phase. In natural conditions, the resolution of hypoxic stress can take place either during the day or at night. In the former case, besides benefiting from the reoxygenation of the environment, the plant can also internally generate oxygen through photosynthesis. On the other hand, if the recovery occurs at night, the plant solely relies on the external oxygen supply since it cannot carry out photosynthesis in the absence of light. This difference in the capability to perform photosynthesis may influence the speed and efficiency of the recovery process. The goal is to assess whether the inactivation of the hypoxic response is faster when photosynthesis is active compared to the case where recovery occurs during the night.
The aim of this study was to evaluate the time it takes for the plant to detect the return of oxygen and inactivate the transcription of HRGs upon reoxygenation.
Another aspect of interest in this study concerns the role of photosynthesis during the recovery phase. In natural conditions, the resolution of hypoxic stress can take place either during the day or at night. In the former case, besides benefiting from the reoxygenation of the environment, the plant can also internally generate oxygen through photosynthesis. On the other hand, if the recovery occurs at night, the plant solely relies on the external oxygen supply since it cannot carry out photosynthesis in the absence of light. This difference in the capability to perform photosynthesis may influence the speed and efficiency of the recovery process. The goal is to assess whether the inactivation of the hypoxic response is faster when photosynthesis is active compared to the case where recovery occurs during the night.
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