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| Author(s): |
Amanda Cristina Baldassi
Total Authors: 1
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| Document type: | Doctoral Thesis |
| Press: | Jaboticabal. 2022-11-09. |
| Institution: | Universidade Estadual Paulista (Unesp). Faculdade de Ciências Agrárias e Veterinárias. Jaboticabal |
| Defense date: | 2022-10-21 |
| Advisor: | Tiago Santana Balbuena |
| Abstract | |
The human influence on climate change observed in recent years is undeniable. Greenhouse gas emissions have been increasing since pre-industrial times and were largely driven by the planet's economic and population growth. Proteomics is a key technology for the study of dynamic and complex biological systems through metabolic changes that occur in response to environmental factors. The Eucalyptus genus has great economic importance in Brazil and its forests are essential sources of carbon stocks. In this work, we studied leaf metabolism through high CO2 concentrations and chloroplast dynamics in response to development process and seasonal changes in Eucalyptus using proteomics technique. The dynamics of chloroplast development revealed that in mature leaves the most abundant proteins are related to redox and catabolic processes, whereas in young leaves these are related to biogenesis. Our findings also suggest that transition seasons (spring and fall) induced the most pronounced chloroplast proteome changes over the year. Furthermore, high CO2 concentration induced differential responses in the growth of the different Eucalyptus species studied here. It was revealed that Eucalyptus urophylla specie was the most responsive to CO2, both in growth and metabolism, in contrast, Eucalyptus grandis did not present great metabolic variations and Eucalyptus pellita seems to use an alternative source of energy in response to increased CO2 concentration. This study contributes to a more comprehensive understanding of the mechanisms of adaptation and stress response in Eucalyptus species for a better understanding of the metabolic regulation of plants in scenarios of environmental changes. (AU) | |
| FAPESP's process: | 19/12580-8 - Assessment of changes in the carbon assimilation rates and lignin biosynthesis in Eucalyptus plants by plant phenotyping and targeted mass spectrometry analysis |
| Grantee: | Amanda Cristina Baldassi |
| Support Opportunities: | Scholarships in Brazil - Doctorate |