Flora Fanerogâmica Do Parque Estadual Da Serra Do Brigadeiro, Minas Gerais, Brasil: Begoniaceae

A taxonomic survey for Begoniaceae occurring in the Serra do Brigadeiro State Park (PESB), Minas Gerais, Brazil is presented in this study. Ten species of Begoniaceae were found at the park, all of them belonging to Begonia: B. altamiroi, B. angulata, B. convolvulacea, B. cucullata, B. fischeri, B. fruticosa, B. hugelii, B. integerrima, B. luxurians and B. riedelii, mainly distinguished by features of habit, by the general aspect of leaf blades, and indument. Of the total, eight species are endemic to Brazil, whilst seven are endemic from the Atlantic Forest. The study was based on bibliographic review, consults to the main Brazilian herbaria, and field observation. Descriptions, illustrations, and comments are also presented for each species.67489390

Factors associated with walking, moderate and vigorous physical activities in adolescents

This study aimed at investigating the relationship between a set of variables (adolescents' gender, age, economic level, nutritional status, and fathers' educational level) and physical activity practices. The sample consisted of 578 students from a public school, aged between 11 and 16 years. The International Physical Activity Questionnaire (IPAQ, version 8, short form) was applied in order to measure their physical activity practices. Chi-square, independent t test and one-way ANOVA were implemented. Thirteen percent of adolescents were physically inactive and no significant difference was found between gender (p > .05). Compared to boys, girls spent more time in walking (p = .019) and vigorous activities (p = .017). Adolescents aged 14-16 years spent more time in walking compared with those aged 11-12 years (p = .026) and 13-year-olds (p = .006). There was a positive association between economic level and time spent in moderate physical activity (p = .034)

Draft Genome Sequence Of 11399, A Transformable Citrus-pathogenic Strain Of Xylella Fastidiosa

The draft genome of Xylella fastidiosa subsp. pauca strain 11399, a transformable citrus-pathogenic strain, is reported here. The 11399 genome size is 2,690,704 bp and has a G+C content of 52.7%. The draft genome of 11399 reveals the absence of four type I restriction-modification system genes. © 2016 Niza et al.4

Clove and rosemary essential oils and encapsuled active principles (eugenol, thymol and vanillin blend) on meat quality of feedlot-finished heifers

Forty Nellore heifers were fed (73days) with different diets: with or without essential oils (clove and/or rosemary essential oil) and/or active principle blend (eugenol, thymol and vanillin). The pH, fat thickness, marbling, muscle area and water losses (thawing and drip) were evaluated 24h post mortem on the Longissimus thoracis, and the effects of aging (14days) was evaluated on the meat cooking losses, color, texture and lipid oxidation. Antioxidant activity was also evaluated. Treatments had no effect (P>0.05) on pH, fat thickness, marbling, muscle area, thawing and drip losses. However, treatments affected (P<0.05) cooking losses, color, texture and lipid oxidation. The diets with essential oil and the active principle blend reduced the lipid oxidation and reduced the color losses in relation to control diet. Aging affected (P<0.05) texture and lipid oxidation. The essential oil and active principles or its blend have potential use in animal feed aiming to maintain/improve meat quality during shelf-life

A influência da salinidade na simbiose de microrganismos benéficos: o caso do feijão caupi

A salinização do solo é um fator limitante para a produção agrícola, podendo diminuir significativamente a capacidade de desenvolvimento vegetativo e consequentemente a qualidade dos produtos, mesmo no caso de culturas consideradas resistentes, como a leguminosa feijão-caupi. Além disso, altos teores de sal também afetam o comportamento da microbiota do solo, reduzindo a interação das plantas com microrganismos benéficos, como os fungos micorrizíco arbusculares (FMAs) e os rizóbios. Assim, avaliar o impacto causado pela salinidade na associação planta-FMA- rizóbio e apontar as variáveis que poderão afetar a cultura do feijão-caupi é o principal objetivo deste trabalho. O delineamento experimental foi em blocos casualizados em casa de vegetação. Os tratamentos foram: controle (sem adição de sal) e solos com diferentes condutividades elétrica (CE), são elas: 1,0 dS m–1; 2,0 dS m–1; 3,0 dS m–1; 4,0 dS m–1; 5,0 dS m–1. Os resultados apontaram que tanto as interações com os microrganismos, quanto o desenvolvimento vegetal foi afetado, com destaque para os valores a partir de 4,0 dS m–1 de condutividade elétrica, sendo que o maior impacto foi notado pela CE 5,0 dS m–1

Levantamento fitossociológico de plantas daninhas em cafezal orgânico.

A adequação de um cafezal para o sistema orgânico causa grande mudança no sistema de manejo de plantas daninhas, mas as informações sobre o comportamento da comunidade infestante em áreas de cultivo de café orgânico são escassas no Brasil. Objetivou-se com este trabalho realizar um levantamento fitossociológico da comunidade infestante em três cafezais (variedades Mundo Novo, Bourbon Vermelho e Obatã) desenvolvidos em sistema orgânico, no município de Garça (SP). Nas três áreas estudadas foram arremessados ao acaso cem quadrados metálicos com área vazada de 0,25 m2, nas entrelinhas da cultura. As espécies contidas no interior dos quadros foram identificadas segundo a espécie botânica, nome popular e família. A partir dos resultados, determinaram-se os parâmetros fitossociológicos: frequência, densidade, abundância, frequência relativa, densidade relativa, abundância relativa, índice de valor de importância e similaridade florísticas pelos métodos de Simple Matching de Sneath & Sokal e similaridade de Sorensen. As famílias que mais se destacaram, com maior número de espécies nas três áreas foram Poaceae e Asteraceae. Houve alta similaridade em todos os contrastes testados, já que pelo menos metade das espécies identificadas foi comum às duas áreas contrastadas

Pre-M Phase-promoting Factor Associates with Annulate Lamellae in Xenopus Oocytes and Egg Extracts

We have used complementary biochemical and in vivo approaches to study the compartmentalization of M phase-promoting factor (MPF) in prophase Xenopus eggs and oocytes. We first examined the distribution of MPF (Cdc2/CyclinB2) and membranous organelles in high-speed extracts of Xenopus eggs made during mitotic prophase. These extracts were found to lack mitochondria, Golgi membranes, and most endoplasmic reticulum (ER) but to contain the bulk of the pre-MPF pool. This pre-MPF could be pelleted by further centrifugation along with components necessary to activate it. On activation, Cdc2/CyclinB2 moved into the soluble fraction. Electron microscopy and Western blot analysis showed that the pre-MPF pellet contained a specific ER subdomain comprising "annulate lamellae" (AL): stacked ER membranes highly enriched in nuclear pores. Colocalization of pre-MPF with AL was demonstrated by anti-CyclinB2 immunofluorescence in prophase oocytes, in which AL are positioned close to the vegetal surface. Green fluorescent protein-CyclinB2 expressed in oocytes also localized at AL. These data suggest that inactive MPF associates with nuclear envelope components just before activation. This association may explain why nuclei and centrosomes stimulate MPF activation and provide a mechanism for targeting of MPF to some of its key substrates