Diversidade Morfológica de Rizobactérias Obtidas de Solos SoB Distintos Manejos de Cultivo da Região Oeste do Paraná

As bactérias diazotróficas encontradas na rizosfera apresentam características fenotípicas distintas e mutáveis dependendo do meio ambiente em que estão inseridas. Neste contexto, o presente trabalho tem como objetivo isolar e caracterizar a morfologia de colônias  de bactérias presentes em amostras de solo coletadas de diferentes manejos de cultivo da região oeste do estado do Paraná. Os manejos contemplados para o estudo foram Sistema Agropastoril (M1), Horticultura (M2), Pastagem (M3), Soja 1 (M4), Mata nativa (M5) e Soja 2 (M6). As amostras de solo foram analisadas em laboratório diluindo-as em solução salina 0,85% até a diluição de trabalho 10-3 a qual foi plaqueada em meio de cultura sólido. Após três dias de crescimento em B.O.D á 27ºC as colônias foram classificadas morfologicamente de acordo com o protocolo estabelecido por Fonseca et al. (2000). Os dados processados após a classificação revela que foram obtidos 136 isolados bacterianos, que foram selecionados para a construção dos agrupamentos obtendo o total de 29 grandes grupos (GG), sendo o manejo M5 (mata nativa) o que teve um maior número de representantes.

Diversidade Morfológica de Rizobactérias Obtidas de Solos SoB Distintos Manejos de Cultivo da Região Oeste do Paraná

As bactérias diazotróficas encontradas na rizosfera apresentam características fenotípicas distintas e mutáveis dependendo do meio ambiente em que estão inseridas. Neste contexto, o presente trabalho tem como objetivo isolar e caracterizar a morfologia de colônias  de bactérias presentes em amostras de solo coletadas de diferentes manejos de cultivo da região oeste do estado do Paraná. Os manejos contemplados para o estudo foram Sistema Agropastoril (M1), Horticultura (M2), Pastagem (M3), Soja 1 (M4), Mata nativa (M5) e Soja 2 (M6). As amostras de solo foram analisadas em laboratório diluindo-as em solução salina 0,85% até a diluição de trabalho 10-3 a qual foi plaqueada em meio de cultura sólido. Após três dias de crescimento em B.O.D á 27ºC as colônias foram classificadas morfologicamente de acordo com o protocolo estabelecido por Fonseca et al. (2000). Os dados processados após a classificação revela que foram obtidos 136 isolados bacterianos, que foram selecionados para a construção dos agrupamentos obtendo o total de 29 grandes grupos (GG), sendo o manejo M5 (mata nativa) o que teve um maior número de representantes.

The James Webb Space Telescope Mission

Twenty-six years ago a small committee report, building on earlier studies, expounded a compelling and poetic vision for the future of astronomy, calling for an infrared-optimized space telescope with an aperture of at least $4m$. With the support of their governments in the US, Europe, and Canada, 20,000 people realized that vision as the $6.5m$ James Webb Space Telescope. A generation of astronomers will celebrate their accomplishments for the life of the mission, potentially as long as 20 years, and beyond. This report and the scientific discoveries that follow are extended thank-you notes to the 20,000 team members. The telescope is working perfectly, with much better image quality than expected. In this and accompanying papers, we give a brief history, describe the observatory, outline its objectives and current observing program, and discuss the inventions and people who made it possible. We cite detailed reports on the design and the measured performance on orbit.Comment: Accepted by PASP for the special issue on The James Webb Space Telescope Overview, 29 pages, 4 figure

TRY plant trait database – enhanced coverage and open access

Plant traits - the morphological, anatomical, physiological, biochemical and phenological characteristics of plants - determine how plants respond to environmental factors, affect other trophic levels, and influence ecosystem properties and their benefits and detriments to people. Plant trait data thus represent the basis for a vast area of research spanning from evolutionary biology, community and functional ecology, to biodiversity conservation, ecosystem and landscape management, restoration, biogeography and earth system modelling. Since its foundation in 2007, the TRY database of plant traits has grown continuously. It now provides unprecedented data coverage under an open access data policy and is the main plant trait database used by the research community worldwide. Increasingly, the TRY database also supports new frontiers of trait‐based plant research, including the identification of data gaps and the subsequent mobilization or measurement of new data. To support this development, in this article we evaluate the extent of the trait data compiled in TRY and analyse emerging patterns of data coverage and representativeness. Best species coverage is achieved for categorical traits - almost complete coverage for ‘plant growth form’. However, most traits relevant for ecology and vegetation modelling are characterized by continuous intraspecific variation and trait–environmental relationships. These traits have to be measured on individual plants in their respective environment. Despite unprecedented data coverage, we observe a humbling lack of completeness and representativeness of these continuous traits in many aspects. We, therefore, conclude that reducing data gaps and biases in the TRY database remains a key challenge and requires a coordinated approach to data mobilization and trait measurements. This can only be achieved in collaboration with other initiatives

Finishing the euchromatic sequence of the human genome

The sequence of the human genome encodes the genetic instructions for human physiology, as well as rich information about human evolution. In 2001, the International Human Genome Sequencing Consortium reported a draft sequence of the euchromatic portion of the human genome. Since then, the international collaboration has worked to convert this draft into a genome sequence with high accuracy and nearly complete coverage. Here, we report the result of this finishing process. The current genome sequence (Build 35) contains 2.85 billion nucleotides interrupted by only 341 gaps. It covers ∼99% of the euchromatic genome and is accurate to an error rate of ∼1 event per 100,000 bases. Many of the remaining euchromatic gaps are associated with segmental duplications and will require focused work with new methods. The near-complete sequence, the first for a vertebrate, greatly improves the precision of biological analyses of the human genome including studies of gene number, birth and death. Notably, the human enome seems to encode only 20,000-25,000 protein-coding genes. The genome sequence reported here should serve as a firm foundation for biomedical research in the decades ahead