Tizón (Sclerotinia sclerotiorum, S. minor) y Marchitamiento (Sclerotium rolfsii) del maní

En Argentina, el cultivo de maní Arachis hypogaea L. se realiza casi exclusivamente en la provincia de Córdoba (98 % del total), significando su exportación alrededor del 10 % del total de las estimadas para esta provincia en 1996. En las áreas productoras de maní del mundo los hongos patógenos presentes en el suelo causan enfermedades que producen significativas disminuciones en los rendimientos. En Argentina las pérdidas han sido calculadas entre 14 y 18 millones de dólares, siendo las enfermedades más importantes el tizón (Sclerotinia sclerotiorum, S. minor) y el marchitamiento (Sclerotium rolfsii). (...) En nuestro país, los estudios efectuados comprenden esencialmente la identificación de los agentes causales, distribución espacial y cuantificación de las pérdidas, faltando completar los estudios sobre su biología y epidemiología. La hipótesis de este proyecto es: A partir de estudios biológicos y epidemiológicos se contribuirá a desarrollar estrategias de manejo de tizón y el marchitamiento del maní. Objetivo General Identificar y definir los principios fundamentales a partir de los cuales diseñar estrategias de manejo integradas al sistema productivo. Objetivos Específicos 1. Conocer la biología de los patógenos causantes del tizón y el marchitamiento y 2. Comprender la epidemiología de estas enfermedades.

The days of a man, being memories of a naturalist, teacher, and minor prophet of democracy.

2

The days of a man, being memories of a naturalist, teacher, and minor prophet of democracy.

1

Placentation of the pigmy treeshrew Tupaia minor / Waldemar Meister and D. Dwight Davis.

v.35:no.4(1956)

Considerações sobre os Thallosporados: o gênero Trichosporon: "Trichosporon minor" n. sp. produtor da piedra axilar

O autor estuda o gênero trichosporon, sob o ponto de vista da sistemática e como produtor da piedra branca e de micoses internas generalisadas do tipo gomoso. Estabelece a prioridade do termo Trichosporon, como foi descrito primeiramente, por BEHREND, devendo-se abandonar a designação posterior de Trichosporum, dada por VUILLEMIN. Estuda a distinção das duas piedras – a piedra branca ou trichosporica e a piedra negra ou asterinica. As lesões produzidas pelos dois cogumelos no pelo parasitado são consideradas como fator indispensável para a fixação do parasito no pêlo e para a formação ulterior no nódulo. Por iim descreve uma nova espécie de piedra, a piedra axilar, produzida pelo Trichosporon minor n. sp. Trichosporon minor n. sp. – cogumelo produtor da piedra axilar, formando nos cabelos desta região pequenos nódulos de coloração acinzentada, de consistência dura e tamanho variável e constituídos de células arredondadas, elíticas ou alongadas, medindo 0,5 a 4 μde diâmetro e algumas germulantes formando cadeias de dois a quatro elementos. Descola a epidermícula do cabelo, onde se fixa, sem entretanto penetrar nas camadas mais profundas. Nos meios artificiais de cultura dá colônias a princípio chatas de superfície húmida e aveludada com franjas espessas e salientes ou colônias vermiculares, ou culturas brancas, chatas, semelhantes a culturas de actinomyces. Não fermenta os açúcares; gelifica tardiamente a gelatina.

On the number of K3,3-minor-free and maximal K3,3-minor-free graphs

"Vegeu el resum a l'inici del document del fitxer adjunt."

On the growth rate of minor-closed classes of graphs

"Vegeu el resum a l'inici del document del fitxer adjunt."

The metazoan parasites of Stellifer minor (Tschudi, 1844): an ecological approach

A quantitative and qualitative analysis of the parasite fauna of the sciaenid Stellifer minor (Tschudi) from Chorrillos, Peru, was made. Some characteristics of the infectious processes, in terms of intensity and prevalence of infection, as a function of host sex and size, are given. Moreover, comments on the characteristics of the parasite fauna, related with host role in the marine food webs are included. The parasite fauna of Stellifer minor taken of Chorrillos, Peru, include the monogeneans Pedocotyle annakohni, Pedocotyle bravoi, Rhamnocercus sp. and Cynoscionicola sp., the digenean Helicometra fasciata, the adult acantocephalan Rhadinorhynchus sp. and the larval Corynosoma sp., the nematode Procamallanus sp., the copepods Caligus quadratus, Clavellotis dilatata and Bomolochus peruensis and one unidentified isopod of the family Cymothoidae. A distinctive characteristic of the parasite fauna (Metazoa) of S. minor is the almost absence of larval forms.

Kudoa sciaenae (Myxozoa: Multivalvulidae) cysts distribution in the somatic muscles of Stellifer minor (Tschudi, 1844) (Pisces: Sciaenidae)

The distribution of Kudoa sciaenae cysts (Myxozoa), in terms of intensity and prevalence, in the somatic muscles of the sciaenid Stellifer minor, shows an apparent preference for the anterior body region, including the head. The observed preference seems to be a consequence of the differential distribution of muscle mass, in the defined area, because when density (cyst/g dry muscle), is considered, all the somatic areas, but not cephalic area, do no show significant differences in terms of mean intensity and prevalence.

Cognitive and Emotional Deficits Associated with Minor and Serious Delinquency in High-Risk Adolescents

This study aims at evaluating how minor and serious delinquency relates to cognitive and emotional functioning in high-risk adolescents, taking problematic substance use into account. In 80 high-risk adolescent males (13-19 years), the frequency of minor and serious offences committed over the last year was predicted, in multiple regression analyses, from problematic substance use, intellectual efficiency, trait impulsivity, alexithymia (inability to express feelings in words), and cognitive coping strategies. Both minor and serious delinquency were more frequent in adolescents with more problematic substance use and higher intellectual efficacy. Minor delinquency was further related to a tendency to act out when experiencing negative emotions, and difficulties in focusing energy on instrumental action when under stress; while serious delinquency was predominantly and strongly related to rigid and dichotomous thinking. The results underline the heterogeneous nature of delinquency, minor offences being primarily associated with emotional regulation deficits, while major offences are related with a lack of cognitive flexibility.

IRF6 Screening of Syndromic and a priori Non-Syndromic Cleft Lip and Palate Patients: Identification of a New Type of Minor VWS Sign.

Van der Woude syndrome (VWS), caused by dominant IRF6 mutation, is the most common cleft syndrome. In 15% of the patients, lip pits are absent and the phenotype mimics isolated clefts. Therefore, we hypothesized that some of the families classified as having non-syndromic inherited cleft lip and palate could have an IRF6 mutation. We screened in total 170 patients with cleft lip with or without cleft palate (CL/P): 75 were syndromic and 95 were a priori part of multiplex non-syndromic families. A mutation was identified in 62.7 and 3.3% of the patients, respectively. In one of the 95 a priori non-syndromic families with an autosomal dominant inheritance (family B), new insights into the family history revealed the presence, at birth, of lower lip pits in two members and the diagnosis was revised as VWS. A novel lower lip sign was observed in one individual in this family. Interestingly, a similar lower lip sign was also observed in one individual from a 2nd family (family A). This consists of 2 nodules below the lower lip on the external side. In a 3rd multiplex family (family C), a de novo mutation was identified in an a priori non-syndromic CL/P patient. Re-examination after mutation screening revealed the presence of a tiny pit-looking lesion on the inner side of the lower lip leading to a revised diagnosis of VWS. On the basis of this data, we conclude that IRF6 should be screened when any doubt rises about the normality of the lower lip and also if a non-syndromic cleft lip patient (with or without cleft palate) has a family history suggestive of autosomal dominant inheritance.

Infectious minor lymphocyte stimulating (Mls) antigens.

Minor lymphocyte stimulating (Mls) antigens have profound effects on the murine immune system and have been very important for our current understanding of immune tolerance. It has recently been discovered that these Mls antigens are encoded in an open reading frame located in the 3' long terminal repeat of endogenous and infectious mouse mammary tumor viruses (MMTV). In this review we will discuss the effects of a novel infectious MMTV with properties of Mls-1a on the neonatal and adult immune system in comparison to the effects of endogenous Mtv-7 (Mls-1a).