| Grant number: | 19/27106-0 |
| Support type: | Scholarships in Brazil - Doctorate |
| Effective date (Start): | November 01, 2020 |
| Effective date (End): | August 31, 2023 |
| Field of knowledge: | Agronomical Sciences - Agronomy - Crop Science |
| Principal researcher: | Rafael Vasconcelos Ribeiro |
| Grantee: | Maria Dolores Pissolato |
| Home Institution: | Instituto de Biologia (IB). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil |
Abstract A recent study developed by our group demonstrated that sugarcane plants previously exposed to cycles of water deficit and rehydration or originated from material that had undergone water deficit had their photosynthetic performance and growth favored when exposed to drought again. The previous exposure to stressful events can trigger changes in the pattern of gene expression that regulate all plant development and allow a more efficient and faster response in cases of recurrent stress, and this phenomenon is treated in the literature as plant memory. The aim of this proposal is to identify the molecular, metabolic and physiological markers that would be associated with memory and drought in sugarcane and to evaluate their inheritance and persistence in vegetatively propagated plants. For this purpose, a large-scale analysis of the main groups of primary metabolites and transcriptome will be performed on samples of leaves, stem buds and sugarcane roots exposed to drought and rehydration cycles. The physiological and molecular responses of these plants will also be analyzed by associating them with the drought memory and their seedlings inheritance. Based on the obtained data, its pretend to suggest new management practices for pre-broken sugarcane seedlings in nursery condition, besides establishing a platform for transcriptomic analysis on that species, which will serve as a basis for the identification and understanding of molecular mechanisms that allow the inheritance of memory to environmental stresses in sugarcane. (AU) | |