| Texto completo | |
| Autor(es): |
Baldassi, Amanda Cristina
;
Balbuena, Tiago Santana
Número total de Autores: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PLoS One; v. 17, n. 9, p. 20-pg., 2022-09-01. |
| Resumo | |
Chloroplast metabolism is very sensitive to environmental fluctuations and is intimately related to plant leaf development. Characterization of the chloroplast proteome dynamics can contribute to a better understanding on plant adaptation to different climate scenarios and leaf development processes. Herein, we carried out a discovery-driven analysis of the Eucalyptus grandis chloroplast proteome during leaf maturation and throughout different seasons of the year. The chloroplast proteome from young leaves differed the most from all assessed samples. Most upregulated proteins identified in mature and young leaves were those related to catabolic-redox signaling and biogenesis processes, respectively. Seasonal dynamics revealed unique proteome features in the fall and spring periods. The most abundant chloroplast protein in humid (wet) seasons (spring and summer) was a small subunit of RuBisCO, while in the dry periods (fall and winter) the proteins that showed the most pronounced accumulation were associated with photo-oxidative damage, Calvin cycle, shikimate pathway, and detoxification. Our investigation of the chloroplast proteome dynamics during leaf development revealed significant alterations in relation to the maturation event. Our findings also suggest that transition seasons induced the most pronounced chloroplast proteome changes over the year. This study contributes to a more comprehensive understanding on the subcellular mechanisms that lead to plant leaf adaptation and ultimately gives more insights into Eucalyptus grandis phenology. (AU) | |
| Processo FAPESP: | 18/15035-8 - Avaliação do desempenho de plantas de eucalipto cultivadas em atmosfera rica em dióxido de carbono: relações fonte-dreno reveladas por proteômica dirigida |
| Beneficiário: | Tiago Santana Balbuena |
| Modalidade de apoio: | Auxílio à Pesquisa - Jovens Pesquisadores - Fase 2 |
| Processo FAPESP: | 19/12580-8 - Avaliação das mudanças nas taxas de assimilação de carbono e biossíntese de lignina em Eucalyptus por análise fenotípica de plantas e espectrometria de massa dirigida |
| Beneficiário: | Amanda Cristina Baldassi |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |