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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Mass Spectrometry of Flavonoid Vicenin-2, Based Sunlight Barriers in Lychnophora species

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Silva, Denise Brentan [1] ; Casanova Turatti, Izabel Cristina [1] ; Gouveia, Dayana Rubio [1] ; Ernst, Madeleine [1] ; Teixeira, Simone Padua [2] ; Lopes, Norberto Peporine [1]
Total Authors: 6
[1] Univ Sao Paulo, NPPNS, Fac Ciencias Farmaceut Ribeirao Preto, BR-14040903 Ribeirao Preto, SP - Brazil
[2] Univ Sao Paulo, Dept Ciencias Farmaceut, Fac Ciencias Farmaceut Ribeirao Preto, BR-14040903 Ribeirao Preto, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: SCIENTIFIC REPORTS; v. 4, MAR 7 2014.
Web of Science Citations: 29

Lychnophora salicifolia plants collected from four different places in Brazil (three states: Goias, Minas Gerais and Bahia) revealed a conserved accumulation of vicenin-2, a di-C-glycosyl flavonoid. Quantitative studies by UPLC-MS/MS showed high concentration of vicenin-2 in leaves from sixty specimens of six Lychnophora species. So the tissue distributions of vicenin-2 were evaluated in wild Lychnophora leaves (Asteraceae) by laser based imaging mass spectrometry (IMS) to propose its distributions and possible functions for the species analyzed. Mass spectrometric imaging revealed that vicenin-2, unlike other flavonoids, was produced at the top of the leaves. The combination of localization and UV absorption properties of vicenin-2 suggests that it could act as a UV light barrier to protect the plants, since plants are sessile organisms that have to protect themselves from harsh external conditions such as intense sunlight. (AU)

FAPESP's process: 10/50811-7 - Atlantic Ombrophylus Dense Forest: floristic composition, structure and functioning within the Serra do Mar State Park, São Paulo, Brazil
Grantee:Carlos Alfredo Joly
Support type: BIOTA-FAPESP Program - Regular Research Grants
FAPESP's process: 12/18031-7 - Application of MALDI-MS/MS in the vicenin-2 and derivatives analyses: understanding the ionization processes to production of the images
Grantee:Denise Brentan da Silva
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 09/54098-6 - Acquisition of a mass spectrometer for the generation of images at the Mass Spectrometry Center of the University of São Paulo Ribeirão Preto School of Pharmaceutical Sciences: studies of molecular localization of biologically active substances
Grantee:Norberto Peporine Lopes
Support type: Multi-user Equipment Program