Abundance, distribution and potential impact of transposable elements in the genome of Mycosphaerella fijiensis.

Mycosphaerella fijiensis is a ascomycete that causes Black Sigatoka in bananas. Recently, the M. fijiensis genome was sequenced. Repetitive sequences are ubiquitous components of fungal genomes. In most genomic analyses, repetitive sequences are associated withtransposable elements (TEs). TEs are dispersed repetitive DNA sequences found in a host genome. These elements have the ability to move from one location to another within the genome, and their insertion can cause a wide spectrum of mutations in their hosts. Some of the deleterious effects of TEs may be due to ectopic recombination among TEs of the same family. In addition, some transposons are physically linked to genes and can control their expression. To prevent possible damage caused by the presence of TEs in the genome, some fungi possess TE-silencing mechanisms, such as RIP (Repeat Induced Point mutation). In this study, the abundance, distribution and potential impact of TEs in the genome of M. fijiensis were investigated

Avaliação de fungicidas para o controle da ferrugem da videira.

Suplemento, ref. 257. Edição dos Resumos do XXXV Congresso Paulista de Fitopatologia, Jaguariúna, fev. 2012

Teores de N, P, K, Ca, Mg e S em gravioleiras cultivadas em solução nutritiva com omissão de macronutrientes.

Publicado também: FRAZÃO, D. A. C.; HOMMA, A. K. O; VIÉGAS, I. de J. M. (Ed.). Contribuição ao desenvolvimento da fruticultura na Amazônia. Belém, PA: Embrapa Amazônia Oriental, 2006. p. 503-508

Densidade populacional de Cryptoblabes gnidiella (Lepidoptera: Pyralldae) em relação a variedade de videira.

A vitiviniculturaapesar de ser uma prática recente no Vale do São Francisco,tem se destacadocom grandes resultadosno esenvolvimentoeconômicodessa região

Changes in the weight of calved cows in native pastures in the Pantanal.

The weight variation of calving cows was followed during the spring in native pastures in the Pantanal. Each lot contained 100 multiparous and 40 primiparous cows submitted to protein (PS) or energy (ES) supplementation. The cows were put in an area of 596 hectares, divided into two paddocks with native pastures of medium and low nutritional value. A completely random manner design was applied. The covariates used for comparing the results were class (multiparous or primiparous) and postpartum days (pp) (> 60 or <60 days), with the Tukey test at 5% by the mixed linear model (procedure MIXED). The multiparous cows gained 26.55 and 36.10kg in the PS and ES supplementation periods, respectively. Primiparous PS cows lost -6.15kg and primiparous ES cows gained 4.19kg during the study period of 42 days. Multiparous and primiparous cows over 60 days pp and supplemented with energy (ES) had a greater weight gain (P <0.05) in their respective categories, thus demonstrating response to dietary improvements (pastures and supplements), possibly associated with the output of the postpartum negative energy balance, an effect more evident in the multiparous category. The native grassland with better nutritional value increased in frequency in relation to the lower value (23.45 to 37.66%) and improvement was observed in the chemical composition of forages (from 53.40 to 57.37% of total digestible nutrients)

Efeito da cobertura plástica na flutuaçao populacional de tripes em uvas finas de mesa.

A incidência de pragas na cultura da videira tem sido cada vez mais intensa no Vale do São Francisco. O produtor, busca cada vez mais tecnologias para adequar o sistema de cultivo, para reduzir as perdas decorrentes de fatores bióticos e abióticos. Visando reduzir as perdas na produção de uva sem sementes, o uso de cobertura plástica pode ser um método eficaz de proteção

Demographic and Clinical Characteristics of Human Immunodeficiency Virus-Infected Patients Receiving Dialysis in Portugal: a Nationwide Multicentre Survey

Background: Data on human immunodeficiency virus (HIV) infected patients receiving dialysis in Portugal is scarce. Methods: This nationwide epidemiological survey retrospectively evaluates HIV-infected patients on chronic dialysis in Portugal between 1997 and 2002. Results: Sixty-six patients were evaluated (mean age: 39.1±1.6 years, 47 men, 35 black African). Sixty-two patients started dialysis and 4 patients who were receiving dialysis had HIV seroconversion. Eighty-five percent of patients were treated in Lisbon. The annual incidence of HIV-infected patients on chronic dialysis was 0.5% in 1997 and 0.9% in 2002. Seventy-eight percent of patients were HIV-1 infected , 13% had hepatitis B and 31% hepatitis C. Sexual contact was the mode of transmission of HIV in 53% of cases. Four patients had biopsy-proved HIV-associated nephropathy. Ninety-five percent of patients were on chronic hemodialysis. Fifty percent of patients had acquired immunodeficiency syndrome. At follow-up, 12 patients died. HIV-infected CKD patient survival after starting dialysis was 80% at 3 years. Conclusion: The incidence of HIV-infected patients on chronic dialysis in Portugal has almost doubled. Widespread use of highly active antiretroviral therapy and the increasing number of black Africans from former overseas Portuguese colonies now living in Portugal are possible reasons for this large increase