It is very important to validate the characterization of medicinal plants ensure their use, especially if are be used only for certain organs. This study aimed obtain information related type secretory structure and secondary metabolites they accumulated, as well phytochemical profile three antihypercholesterolemic plants. organs (leaves, stem bark, roots) from Moringa oleifera, Muntingia calab...

Ripening and chilling injury of avocado (Persea americana Mill. cv. Hass) have been studied at the ultrastructural level. Changes in the organization of cellular organelles and the breakdown of the cell walls during ripening are described. Changes in the organization of the cell membrane during chilling injury have also been detected and may be the underlying cause of the physiological and bioc...

In situ RNA hybridization and immunocytochemistry were used to establish the cellular distribution of monoterpenoid indole alkaloid biosynthesis in Madagascar periwinkle (Catharanthus roseus). Tryptophan decarboxylase (TDC) and strictosidine synthase (STR1), which are involved in the biosynthesis of the central intermediate strictosidine, and desacetoxyvindoline 4-hydroxylase (D4H) and deacetyl...

Antitumor substances related to vinblastine and vincristine are exclusively found in the Catharanthus roseus (Madagascar periwinkle), a member of the Apocynaceae plant family, and continue to be extensively used in cancer chemotherapy. Although in high demand, these valuable compounds only accumulate in trace amounts in C. roseus leaves. Vinblastine and vincristine are condensed from the monote...

Introduction: The study of herbivory is fundamental in ecology and includes how plants invest strategies mechanisms to reduce herbivore damage. However, there still a lack information about the environment, plant density, functional traits influence aquatic ecosystems. Objective: To assess if relationship between herbivory, environmental variables, two species Montrichardia, neotropical plant. ...

The trans-Golgi network (TGN) is a tubular-vesicular organelle that matures from the trans cisternae of the Golgi apparatus. In plants, the TGN functions as a central hub for three trafficking pathways: the secretory pathway, the vacuolar trafficking pathway and the endocytic pathway. Here, we describe a novel TGN-localized membrane protein, CONTINUOUS VASCULAR RING (COV1), that is crucial for ...

The terminal steps in the biosynthesis of the monoterpenoid indole alkaloids vindoline and minovincinine are catalyzed by separate acetyl coenzyme A-dependent O-acetyltransferases in Madagascar periwinkle (Catharanthus roseus G. Don). Two genes were isolated that had 63% nucleic acid identity and whose deduced amino acid sequences were 78% identical. Active enzymes that were expressed as recomb...