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Plant-Bacteria Association and Symbiosis
As a result of the environmental impacts associated with chemical fertilizer misuse, society has turned its attention to alternative and sustainable forms of plant nutrition. By providing substances that would otherwise be scarce, plant growth-promoting bacteria (PGPBs) can influence the availability of nutrients, directly affecting plants' metabolism. In addition to fixing nitrogen, and solubilizing phosphorus, and iron, they also produce hormones such as auxins, gibberellins, cytokinin's, and ethylene). Studies with PGPB around the world must be directed towards biological control and growth promotion integrated into a sustainable management system. Gradually, the problems identified in research with biological control are being solved. However, erratic results regarding the bacterization of cultures frustrate researchers and result from a lack of understanding of plant-microorganism interactions dynamics under various environmental conditions.
Biotecnologia industrial, v. 3
Este volume é composto por 22 capítulos que explicam a produção tradicional e de segunda geração de etanol, passando por produção microbiana de solventes, produção de ácidos orgânicos, polissacarídeos, oligossacarídeos, biossurfactantes, inoculantes agrícolas, enzimas diversas, bioinseticidas, microrganismos, poliésteres bacterianos e processos com células animais, desenvolvimento e produção de vacinas para uso humano, bioprocessos para obtenção de vitaminas, aplicações industriais de microalgas, biomineração, entre outros. Os assuntos foram tratados de modo didático, o que permite aos iniciantes e interessados em geral adquirirem conhecimento sobre as técnicas de fermentação e outros bioprocessos que não se enquadram na definição de fermentação com uma leitura agradável e acessível. Aos profissionais, estudantes e pesquisadores, os temas deste volume oferecem conhecimentos importantes que contribuem para a abertura de novas perspectivas de uso do potencial de microrganismos já conhecidos e novos para a obtenção econômica de produtos que não agridam o ambiente.
House documents
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The Human Microbiome, Diet, and Health
The Food Forum convened a public workshop on February 22-23, 2012, to explore current and emerging knowledge of the human microbiome, its role in human health, its interaction with the diet, and the translation of new research findings into tools and products that improve the nutritional quality of the food supply. The Human Microbiome, Diet, and Health: Workshop Summary summarizes the presentations and discussions that took place during the workshop. Over the two day workshop, several themes covered included: The microbiome is integral to human physiology, health, and disease. The microbiome is arguably the most intimate connection that humans have with their external environment, mostly through diet. Given the emerging nature of research on the microbiome, some important methodology issues might still have to be resolved with respect to undersampling and a lack of causal and mechanistic studies. Dietary interventions intended to have an impact on host biology via their impact on the microbiome are being developed, and the market for these products is seeing tremendous success. However, the current regulatory framework poses challenges to industry interest and investment.
