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Universidade de São Paulo (USP). Instituto de Biociências (IB) (Institutional affiliation from the last research proposal) Birthplace: Estados Unidos
Magdalena Rossi is full professor at the University of São Paulo (USP). She obtained her PhD in Biological Sciences at the University of Buenos Aires (UBA), Argentina. During her PhD, she characterized the Abscisic acid, Stress and Ripening gene family in tomato, thereafter named ASR; being supported by an UBA postgraduate fellowship. Part of her PhD research was performed in Luis Herrera Estrellas lab at CINVESTAV, México. Then, she spent two years at Valerie Williamsons lab at U.C.Davis, USA, working in molecular phytopathology where she identified the first insect resistance gene in plants. Thereafter, from 1999 to 2005, she performed a second postdoc at the USP, Brazil, under Marie-Anne Van Sluyss supervision. During this period, as part of a team with over 30 labs in Sao Paulo state and supported by FAPESP, she participated in an ambitious project that characterized sugarcane transcriptome. In 2001, as visiting researcher, she performed a resistance gene analogues mapping project in sugarcane at CIRAD, France. In 2005, funded by the European Union SOL Integrated Project, she established her own research group at USP working on the identification and characterization of genetic determinant involved in yield and nutritional quality in tomato. Throughout her career, her group has identified and characterized tocopherol biosynthetic pathway, chlorophyll degradation genes, and senescence related genes in tomato. More recently, Rossis lab has focused on the impact of light perception and signaling in crop yield and quality. In this context, her group is working on the characterization of the molecular mechanisms involved in light-defense trade-off aiming to develop biotechnological strategies for breeding multiple stress responses in crops species. (Source: Lattes Curriculum)
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Knowing the challenge imposed on science for ensuring food security in times of climate change, it is essential to identify the genetic variables that modulate crop yield and quality, understand their mechanisms of action, and evaluate how these mechanisms are affected by the changing environmental conditions. In this context, the general objective of this proposal is to study common fact…
Knowing the challenge imposed on science for ensuring food security in times of climate change, it is essential to identify the genetic variables that modulate crop yield and quality, understand their mechanisms of action, and evaluate how these mechanisms are affected by the changing environmental conditions. In this context, the general objective of this proposal is to study common fact…
Plants integrate several environmental cues in order to proper coordinate growth, development, and defense. The coordinated response to the stimuli relies on the interconnection of the signaling pathways. Light is a major factor determining the development and several physiological processes, being the B-box proteins (BBX) a family of transcription factors that gained much attention as pi…
Plant fitness is highly dependent on the ability to cope with multiple (a)biotic environmental cues, such as light and interacting organisms. Complex signaling networks driven by perception of these cues and involving endogenously produced phytohormones, program the appropriate cellular and organismal response and steer plant development and metabolism to promote fitness and survival. Oft…
Due to the high consumption and the biochemical profile, tomato fruit is an important component of the human diet contributing significant amounts of antioxidant compounds, such as carotenoids and tocopherols. Since these nutraceuticals are synthesized in the plastids, plastidial abundance and activity directly impact in the nutricional quality of the fruits. The differentiation and activ…
Leaf senescence initiates when photosynthetic potential riches the maximum capacity and during its progression photochemical activity decreases due to the degradation of the photosynthetic machinery and nutrients are translocated to non-senescent plant organs. Several evidences indicate that the delay of senescence maintaining the production of photosynthates for longer periods results in…
(Only some records are available in English at this moment)
Tocopherols, also known as Vitamin E, are powerful antioxidants that protect cell membranes against oxidative damage. They are essential for plant photosynthesis and for reducing the progression of certain animal diseases. Tocopherols are synthesized exclusively by photosynthetic organisms, with one of the components being a phytyl-derived side chain originated from phytyl diphosphate (PD…
Among the plethora of environmental stimuli to which plants are exposed, biotic interactions, such as with pathogens,herbivores, or beneficial microorganisms, trigger the modulation of complex signaling cascades mediated by several plant hormones. Particularly, jasmonic acid (JA) is a core component in the response network to wounding, herbivory and necrotrophic pathogens. In the absence …
(Only some records are available in English at this moment)
(Only some records are available in English at this moment)
Coping with biotic and abiotic stresses are the greatest challenges for plants in the current context of climate changes, directly affecting their growth, development and productivity. Plant responses to these stresses are mediated by a complex signaling network involving hormones and regulatory proteins. Among them, BBX transcription factors play key roles by integrating signals related …
The jasmonic acid (JA) signaling pathway acts in the defense against herbivores and necrotrophic pathogens. In normal conditions, MYC2 transcription factor, responsible for triggering the JA-mediated response, is repressed by JAZ proteins. Upon pathogens stimuli, JA is synthesized and binds to the ubiquitination complex SCFCOI1, that marks JAZ for degradation, releasing MYC2 to induce the…
In tomato, Solanum lycopersicum, B-box domain containing proteins (SlBBXs) have shown to playa role in different physiological processes during plant's lifespan, such as shade avoidance, bioticand abiotic stress response, vegetative and reproductive development, and fruit nutritional quality. The mode of action of the SlBBX proteins have been associated to the transcriptional regulation e…
BBX proteins encompass a group of zinc-finger transcription factors that contain at least one conserved B- box domain in their N-terminal region, which play important roles as regulators of flowering, circadian clock, photo and skotomorphogenesis, biotic and abiotic stress responses, and light signaling transduction. Several BBX proteins that regulate shade avoidance have been identified,…
Tomato (Solanum lycopersicum L.) is an important source of nutraceutical compounds for human diet, many of which are totally or partially synthesized in the plastids (e.g. carotenoids and tocopherols). During ripening, the fruits suffer remarkable physiological and biochemical changes associated with chloroplast-to-chromoplast conversion. Phytochrome-mediated light signal transduction reg…
Tomato fruits are source of health-promoting antioxidant substances, such as ascorbic acid, carotenoids and tocopherols (Vitamin E, VTE). The accumulation of these plastid-derived compounds is affected by light, as this signal has a strong role in regulating chloroplast maintenance and activity. For example, silencing of DE-ETIOLATED 1 gene, a negative effector in light signal transductio…
(Only some records are available in English at this moment)
| 3 / 3 | Ongoing grants |
| 10 / 9 | Completed research grants |
| 7 / 7 | Ongoing scholarships in Brazil |
| 37 / 27 | Completed scholarships in Brazil |
| 3 / 3 | Ongoing scholarships abroad |
| 5 / 4 | Completed scholarships abroad |
| 65 / 53 | All research grants and scholarships |
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