Context: The variety of pathways for the introduction of a species into the medical collection of traditional communities has led many researchers to question the processes of selection and the use of these resources. A better comprehension of these processes will allow us to understand the cultural dynamics that are related to traditional medical practices, as well as to provide us with new ways in which to facilitate the exploration of natural products. Objective: This study aims to test the predictive power of the plant apparency hypothesis as it relates to medicinal plant selection by the rural communities of the Caatinga and the Atlantic Forest in northeast Brazil. Material and methods: Initially, a survey of the medicinal plants used by these communities was conducted using semistructured interviews. Subsequently, data on the life strategies and the habits of each species were collected.

More detailed data on the specific plant parts indicated in interviews were also collected. A phytochemical screening for seven classes of chemical compounds was carried out to test the predictions of the plant apparency hypothesis. Results: The medicinal plants from the Caatinga (especially those that are considered to be trees in habit) have a strong ability to accumulate quantitative compounds, and these species are most likely to be plants with significant biological activity related to these compounds; the medicinal plants from the Atlantic Forest, on the other hand, tend to have a high occurrence of qualitative compounds, especially in herbaceous life forms. Discussion and conclusion: It was concluded that the plant apparency hypothesis does not adequately explain the selection of medicinal plants in the two environments studied. Our findings highlight some important implications for bioprospecting that need to be further tested experimentally, and through systematic studies, in different regions.

Livro Farmacognosia Da Planta Ao Medicamento Pdf Download -- a0a502a091.

Data analysis The relative importance (RI) of each plant species was calculated according to the method proposed by Bennett BC, Prance GT. Introduced plants in the indigenous pharmacopoeia of Northern South America. Econ Bot, 54, 90– 102., with “2” being the maximum value that a species can obtain. Download Sharepoint Designer 2010 For Windows 7 64 Bit. Species that obtained higher results were considered more versatile, and present a higher number of properties and bodily systems that can subsequently be treated. This analysis was performed only in order to test if the habit of a species could be a predictor of the versatility of a plant that already possesses medicinal uses. We applied the Kruskal–Wallis test ( Sokal RR, Rholf FG. New York: Freeman and Company.

Keyshia Cole Just Like You Kickass Torrent. ) to examine if the RI of local species is associated with the life strategy, habit, chemical composition, and the plant parts used ( P. Apparency hypothesis: compounds classes versus habit All of the species studied possessed at least one of the seven classes of compounds. The Caatinga species presented the following configuration: saponins (76.9%), terpenes (72.3%), and tannins (60%).

In the Atlantic Forest species, the configuration was different and was constituted by: flavonoids (86.7%), quinones (76%), and saponins (54.7%), which stood out (). We believe that the next step in future studies is to include quantitative tests for total phenols. In the Caatinga, tannins were predominantly found in all of the habits studied, including trees ( G = 10.13, P. According to the results presented in our work, and based on all of the study species collected from the Caatinga and the Atlantic Forest, the habit and the life strategy of the plant are not predictors of the occurrence of certain phytocompound classes.

The herbs from Caatinga demonstrated a high occurrence of quantitative compound, such as tannins ( G = 8.40, P. Summary of the Kruskal–Wallis test based on the relative importance (RI), life strategies, habit, and phytocompounds, to study the criteria for the selection and use of medicinal plants in the Caatinga and the Atlantic Forest, northeastern Brazil (mean + standard deviation). Caatinga Atlantic Forest Life strategies K 0.74 ± 0.56 0.53 ± 0.44 r 0.55 ± 0.42 0.69 ± 0.35 K × r H = 0.7273, P = 0.3938 H = 3.3755, P = 0.0662 Habit Tree 0.91 ± 0.58 0.46 ± 0.27 Shrub 0.39 ± 0.42 0.53 ± 0.42 Herb 0.56 ± 0.41 0.83 ± 0.50 Tree × Shrub H = 6.7313, P = 0.0095 H = 0.0274, P = 0.8685 Tree × Herb H = 4.66, P = 0.0309 H = 3.4273, P = 0.0641 Shrub × Herb H = 2.9593, P = 0.0854 H = 3.6176, P = 0.0572 Phytocompounds Quantitative 0.68 ± 0.51 0.54 ± 0.42 Qualitative 0.72 ± 0.54 0.56 ± 0.46 Quantitative × Qualitative H = 0.0891, P = 0.7654 H = 0.0028, P = 0.9576. Summary of the G-test related to the presence of all compound classes from the medicinal plants collected to study the criteria to be used for the selection and use of medicinal plants in the Caatinga and the Atlantic Forest, northeastern Brazil. Tannins Saponins Quinones Flavonoids Coumarins Terpenoids Alkaloids Caatinga Tree G = 10.13, P = 0.0015 G = 10.13, P = 0.0015 G = 32.03, P.