CV Lattes
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Universidade Estadual de Campinas (UNICAMP). Instituto de Biologia (IB) (Institutional affiliation from the last research proposal) Birthplace: Brazil
Rafael Vasconcelos Ribeiro is an agronomist by the Federal University of Lavras (2000, Brazil, Pibic/CNPq scholarship) with Master degree in Plant Physiology and Biochemistry (2002, Brazil, Fapesp scholarship) and Doctorate degree in Agricultural Meteorology (2006, Brazil, Fapesp scholarship), both by the Luiz de Queiroz College of Agriculture, University of Sao Paulo. Currently, he is full professor at the University of Campinas (Unicamp) and his studies are related to crop environmental physiology with emphasis on photosynthesis and water relations of citrus, grapevine, legumes, sugarcane and pastures. (Source: Lattes Curriculum)
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Pastures and sugarcane are economically important crops, with genetic complexities that restrict the availability of genomic resources and make the selection process slower and more complicated than in other important agricultural species. Food production and also bio-based resources face constant abiotic and biotic challenges, and sustainable practices and environmentally-friendly soluti…
Dr. Ribeiro's groups has recently shown that sugarcane plants previously exposed to drought and rehydration events exhibited a better photosynthetic performance and growth rate when exposed to a new drought event compared to plants previously grown in well-watered conditions. Plant memory refers to the capacity of a previous exposure to stressful events trigger changes that regulate all p…
Sugarcane is an economically important crop in Brazil. São Paulo (SP) state, Brazil has experienced large-scale conversion of pasture to sugarcane in recent decades, with the expansion of biofuels. This rain-fed agricultural area is exposed to seasonal drought and periodic high tropospheric ozone (O3) pollution at levels known elsewhere to be detrimental to plant productivity. Counter to …
(Only some records are available in English at this moment)
The regulation of carbon and nitrogen metabolism is associated with tolerance to water deficit and low temperatures. The main environmental limitations for sugarcane production, whose sensitivity to these limitations is greater compared to energy cane. Herein, we propose that the adjustments in C and N metabolism are crucial for energy cane tolerance to water deficit and low temperatures.…
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 regulat…
Sugarcane is largely grown in rainfed areas, where water deficit is a frequent environmental challenge. In previous experiments and independent of water availability, we found higher growth of plants originating from mother plants (plants in which propagation material was obtained) subjected to drought, an evidence of transgenerational memory. If this mechanism of drought resistance is pr…
The practice of grafting affects the plant susceptibility to water deficit since rootstock and canopy exhibit different resistance to drought. In xylem vessels, the tension generated by transpiration can cause formation of embolism, which reduces the ability of plants to carry water. The vulnerability of branches to embolism varies throughout the growing season of plants as well as after …
(Only some records are available in English at this moment)
Embolism has been proposed as one of the main causes of drought-induced tree mortality, resulting in reduced xylem conductivity and, ultimately, hydraulic failure. Embolism resistance varies among species and is typically evaluated by vulnerability curves (VCs) constructed by the relationship between xylem water potential and corresponding degrees of xylem embolism. Different methods have…
The water transport in plants is not a completely passive process and the presence of ions in the sap can increase the xylem conductance. Hypothetically, hydrogels (pectins) on intervessel pit membrane may shrink if ions are present in the sap, which results in reduced resistance to water flow. However, this explanation is challenged by the lack of pectins in mature intervessel pit membra…
In a previous study, we noticed a significant reduction in leaf nitrogen concentration in the phase that precedes the maturation of sugarcane in field conditions. Although we know that there is a strong relationship between nitrogen and photosynthesis in higher plants, the processes underlying the assimilation of CO2 affected by nitrogen are poorly understood in C4 plants, such as sugarca…
(Only some records are available in English at this moment)
| 1 / 1 | Ongoing grants |
| 13 / 11 | Completed research grants |
| 1 / 1 | Ongoing scholarships in Brazil |
| 17 / 12 | Completed scholarships in Brazil |
| 5 / 5 | Completed scholarships abroad |
| 37 / 30 | All research grants and scholarships |
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