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Mevalonate-derived quinonemethide triterpenoid from in vitro roots of Peritassa laevigata and their localization in root tissue by MALDI imaging

Abstract

Biosynthetic investigation of quinonemethide triterpenoid 22b-hydroxy-maytenin (2) from in vitro root cultures of Peritassa laevigata (Celastraceae) was conducted using 13C-precursor. The mevalonate pathway in P. laevigata is responsible for the synthesis of the quinonemethide triterpenoid scaffold. Moreover, anatomical analysis of P. laevigata roots cultured in vitro and in situ showed the presence of 22b-hydroxy-maytenin (2) and maytenin (1) in the tissues from transverse or longitudinal sections with an intense orange color. MALDI-MS imaging confirmed the distribution of (2) and (1) in the more distal portions of the root cap, the outer cell layers, and near the vascular cylinder of P. laevigata in vitro roots suggesting a role in plant defense against infection by microorganisms as well as in the root exudation processes. (AU)

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
PINA, EDIEIDIA S.; SILVA, DENISE B.; TEIXEIRA, SIMONE P.; COPPEDE, JULIANA S.; FURLAN, MAYSA; FRANCA, SUZELEI C.; LOPES, NORBERTO P.; PEREIRA, ANA MARIA S.; LOPES, ADRIANA A. Mevalonate-derived quinonemethide triterpenoid from in vitro roots of Peritassa laevigata and their localization in root tissue by MALDI imaging. SCIENTIFIC REPORTS, v. 6, MAR 4 2016. Web of Science Citations: 6.

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