Catálogo de acessos do Banco Ativo de Germoplasma de Milho com grãos do tipo doce.

Tendo em vista a necessidade de agregar valor ao BAG Milho e a importância do milho-doce, foram traçados os objetivos do presente trabalho que são: apresentar os acessos do BAG Milho com grãos do tipo doce, seus dados de passaporte, de caracterização, informações sobre os alelos mutantes que conferem o fenótipo doce presentes nestes acessos e avaliar aspectos agronômicos e relativos à qualidade de milho-doce, assim como de algumas cultivares comerciais e com base nessas informações traçar inferências sobre a variabilidade dos recursos genéticos de milho-doce e catalogar os acessos preservados no BAG Milho.bitstream/item/210339/1/doc-241.pd

Listeria monocytogenes in Five Sardinian Swine Slaughterhouses: Prevalence, Serotype, and Genotype Characterization

In a 3-year study (2008 to 2011) to estimate the prevalence and the contamination sources of Listeria monocytogenes in pork meat in Sardinia, Italy, 211 samples were collected from five Sardinian swine slaughterhouses: 171 samples from slaughtered pigs and 40 from the slaughterhouse environment. Fifty L. monocytogenes isolates were characterized by PCR-based serotyping, presence of virulence-associated genes, and pulsed-field gel electrophoresis restriction analysis. The overall prevalence of L. monocytogenes was 33% in swine carcasses, 7% in cecal material, 23% on meat contact surfaces, and 25% on noncontact surfaces. Only two serotypes were detected: 1/2c (78%) and 1/2a (22%). In all, based on the presence of virulence-associated genes, eight pathogenic profiles were detected. Only 42% of all isolates carried the full complement of virulence-associated genes and were allotted to profile 1. Six pulsed-field gel electrophoresis profiles persisted in the slaughterhouses; restriction profiles appeared to be specific to each plant