CV Lattes
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Universidade de São Paulo (USP). Instituto de Biociências (IB) (Institutional affiliation from the last research proposal) Birthplace: Brazil
graduate at Ciências Biológicas from Universidade de São Paulo (1983), master's at Botany from Universidade de São Paulo (1988) and ph.d. at Botany from Universidade de São Paulo (1993). Has experience in Botany, focusing on Vegetal Physiology, acting on the following subjects: bromeliaceae, plant physilogy, in vitro culture, CAM photosynthesis and nitrogen nutrition. (Source: Lattes Curriculum)
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Most epiphytes are found in low-nutrient environments with an intermittent water supply. To deal with water limitation, manybromeliads perform crassulacean acid metabolism (CAM), such as Guzmania monostachia, which shifts from C3 to CAM and canrecycle CO2 from the respiration if stomata remain closed during daytime and nighttime (CAM-idling mode). Since the absorbingleaf trichomes can be …
Guzmania monostachia is an epiphytic bromeliad with tank and C3-CAM facultative metabolism that survives to intensive environmental variations such as the intermittency of water and nutrient availabilities. Previous researches of our group have shown that this bromeliad is inducible to CAM in water scarcity and under low N availability and can revert to C3 when rehydrated. Considering its…
We are requesting funding for a project entitled “Improving the efficiency of water and nitrogen use by crop plants". This project would consist of two annual components: one visit each year by a postgraduate student from USP to Oxford and one visit each year by the two main researches (from São Paulo to Oxford and from Oxford to São Paulo). Reflecting this structure, the aims of the proj…
(Only some records are available in English at this moment)
The Crassulacean Acid Metabolism (CAM) allows the assimilation of CO2 with a greater water use efficiency rather than the C3 and C4 metabolisms. In the epiphytic C3-CAM facultative bromeliad Guzmania monostachia (Bromeliaceae, Tillandsioideae), the C3 maximizes its growth under favorable environmental conditions, while CAM is manifested in stressful conditions. Since different nitrogen so…
(Only some records are available in English at this moment)
Organic molecules can be the main input of nitrogen for plants in environments where inorganic nitrogen sources are limited, such as epiphytic habitat. Recent studies conducted in our laboratory at IBUSP have shown a high capacity of Vriesea gigantea plants to absorb urea by their leaves, making this bromeliad an excellent model to study urea metabolism. Nevertheless, urea uptake and assi…
Urea has been characterized as a very important nitrogen and carbon source to bromeliads. Recent studies conducted in our laboratory at IBUSP have shown a high preference of Vriesea gigantea plants for urea. For some plant species, urea transport through aquaporins has already been described.Three foliar aquaporin genes, VgPIP1,2; VgPIP1,5 and VgTIP2, have been recently cloned from urea-t…