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Author : L. Perin
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (79 download)
Download or read book Caracterização de bactérias diazotróficas do gênero Burkholderia em associação com cana-de-açúcar written by L. Perin and published by . This book was released on 2006 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : L. Perin
Publisher :
ISBN 13 :
Total Pages : 103 pages
Book Rating : 4.:/5 (79 download)
Download or read book Estudo da comunidade de bactérias diazotróficas do gênero Burkholderia em associação com cana-de-açúcar e descrição de Burkholderia silvatlantica written by L. Perin and published by . This book was released on 2007 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: A cultura da cana-de-açúcar no Brasil ocupa mais de seis milhões de hectares sendo importante economicamente pela geração de empregos e bastante promissora para a produção de energia. Dentre as Poaceas (gramíneas), é a cultura que mais recebe contribuições da fixação biológica de nitrogênio, porém ainda não se sabe ou não se conhece qual ou quais organismos são responsáveis pelos melhores resultados observados. Inúmeros gêneros de bactérias diazotróficas foram encontrados em associação com cana-de-açúcar, dentre eles o gênero Burkholderia, até o momento pouco estudado em associação com esta cultura. O objetivo deste estudo foi isolar e caracterizar bactérias diazotróficas do gênero Burkholderia em associação com cana-de-açúcar e descrever uma nova espécie de bactéria diazotróficas do gênero Burkholderia. Para tal, foram coletadas amostras de plantas em canaviais de quatro estados brasileiros para contagem e isolamento da comunidade de bactérias utilizando os meios de cultura LGI e JMV. Os isolados foram caracterizados fisiologicamente, morfologicamente e molecularmente. Foram obtidos 64 isolados diazotróficos do gênero Burkholderia, que apresentaram metabolismo versátil e diferiram dos padrões das espécies analisadas. Apenas cinco isolados foram identificados pela técnica de ARDRA, dois pertenceram a espécie B. tropica e três a B. unamae. Um grande grupo, com 32 isolados, apresentou mesmo perfil de restrição pela técnica de ARDRA e diferiu das espécies analisadas. O sequênciamento da região 16S rDNA de dois destes isolados mostrou que eles não pertencem às espécies já descritas. Este grupo obtido de plantas de cana-de-açúcar, juntamente com isolados similares, obtidos de milho e abacaxi, foi descrito como uma nova espécie de nome B. silvatlantica. A nova espécie de Burkholderia foi confirmada pelos experimentos de hibridização DNA:DNA, com apenas 30% de similaridade com a espécie mais próxima. B. silvatlantica fixou nitrogênio em condições microaerofilicas, não apresentou capacidade de solubilização de fosfato inorgânico, não produziu hormônios vegetais e não apresentou capacidade de nodulação em leguminosas. Estes resultados confirmaram que o gênero Burkholderia é rico em espécies diazotróficas e estão presentes em diferentes habitats. The sugarcane crop in Brazil occupies almost six million hectares and it is economically important for the generation of jobs and energy production. Among the Poaceas species, it is the crop that receives more contributions from the biological nitrogen fixation, however until this moment it is unknown what organisms are responsible for the best results observed. Innumerable genuses of diazotrophic bacteria were found in association with sugarcane, among them the genus Burkholderia. However little is known about this genus in association with sugarcane. The objective of this study was to isolate and to characterize diazotrophic Burkholderia bacteria in association with sugarcane, and to describe a new species of diazotrophic Burkholderia bacteria. For that, samples of plants were collected in four crop areas, in different Brazilian states, for counting and isolating the bacteria community using the culture medias LGI and JMV. The isolates were characterized physiological, morphologically and molecularly. Sixty-four Burkholderia diazotrophic isolates were gotten that presented versatile metabolism, and the majority differing from the analyzed species patterns. Only five isolates were identified by the ARDRA technique, two belonging to B. tropica species and three to B. unamae. A big group, with 32 isolates, presented the same restriction profile by the ARDRA technique and differed from the analyzed species. The sequencing of the 16S rDNA region of two of these isolates showed that they don't belong to the already described species. This group, from sugarcane plants together with similar maize and pineapple isolates, was described as a new species named B. silvatlantica. The characterization of this new Burkholderia specie was confirmed by the hybridization DNA: DNA technique, presenting only 30% of similarity with the closest species, and the sequencing of the 16S rDNA region. B. Silvatlantica fixed nitrogen in microaerophilic conditions, and it had no capacity of inorganic phosphate solubilization, it did not produce vegetal hormones and had no nodulation capacity in leguminous. These results confmned that Burkholderia is a rich genus in diazotrophics species and colonize different habitats.
Author : João Lucio de Azevedo
Publisher : Springer
ISBN 13 : 3319558048
Total Pages : 441 pages
Book Rating : 4.3/5 (195 download)
Download or read book Diversity and Benefits of Microorganisms from the Tropics written by João Lucio de Azevedo and published by Springer. This book was released on 2017-06-10 with total page 441 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses the diversity of tropical microorganisms and its applications in agriculture, renewable energy production and environmental protection. It covers several tropical habitats such as rain forests, mangroves, sea and river waters and describes how microorganisms isolated from these regions can be used to control insects and plant diseases, to improve sugar cane and biofuels production among other applications. The book also aims to bring researchers’ attention to the potential of tropical microorganisms for biotechnological purposes, an area that is still far from being well explored.
Author : Istvan Fendrik
Publisher : Springer Science & Business Media
ISBN 13 : 364279906X
Total Pages : 546 pages
Book Rating : 4.6/5 (427 download)
Download or read book Azospirillum VI and Related Microorganisms written by Istvan Fendrik and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt: Azospirillum is a plant growth promoting rhizobacterium used for inoculation of cereal and forage crops. The book covers its physiology, ecology, biochemistry, and molecular biology. The most advanced molecular techniques to understand the regulatory mechanisms of nitrogen fixation and ammonia assimilation, as well as the basis of phytohormone production, are included. In particular, the identification of novel types of promoters, specific regulatory circuits, and new regulatory proteins is described. New insights in the plant growth promoting role of the bacteria through the analysis of their interactions with the plant are presented. Also discussed are field applications, allowing the evaluation of the physiological and agronomic involvement of Azospirillum inoculations.
Author : Claudine Elmerich
Publisher : Nitrogen Fixation: Origins, Applications, and Research Progress
ISBN 13 :
Total Pages : 356 pages
Book Rating : 4.F/5 ( download)
Download or read book Associative and Endophytic Nitrogen-fixing Bacteria and Cyanobacterial Associations written by Claudine Elmerich and published by Nitrogen Fixation: Origins, Applications, and Research Progress. This book was released on 2007 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: This self-contained volume covers fundamental and applied aspects of nitrogen-fixation research. The book describes milestones in the discovery of the associative and endophytic nitrogen-fixing bacteria found involved with cereal crops, forage grasses, and sugar cane. It provides a comprehensive overview of their phylogeny, physiology, and genetics as well as of the biology of their association with their host plants, including tools for in situ localization and population-dynamics analysis. Also included are chapters describing the functions required for a bacterium to be competent and competitive in the rhizosphere, and analysis of associations of cyanobacteria with fungi, diatoms, bryophytes, cycads, Azolla, and Gunnera.
Author : Kassem Alef
Publisher : Academic Press
ISBN 13 :
Total Pages : 608 pages
Book Rating : 4.3/5 (91 download)
Download or read book Methods in Applied Soil Microbiology and Biochemistry written by Kassem Alef and published by Academic Press. This book was released on 1995-07-11 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quality control and quality assurance in applied soil microbiology and biochemistry. Soil sampling, handling, storage and analysis. Enrichment, isolation and counting of soil microrganisms. Anaerobic microbial activities in soil. Enzyme activities. Microbial biomass. Community structure. Field methods. Bioremediation of soil.
Author : Gero Benckiser
Publisher : CRC Press
ISBN 13 : 9781574445893
Total Pages : 472 pages
Book Rating : 4.4/5 (458 download)
Download or read book Biodiversity In Agricultural Production Systems written by Gero Benckiser and published by CRC Press. This book was released on 2006-07-19 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: While modern science has always recognized the central role that biodiversity plays in the ecological processes that maintain the Earth's equilibrium, our increasing knowledge of nature has deepened our appreciation of this principle. Consequently, those involved with implementing and maintaining sustainable agriculture systems have begun to take a far more sophisticated approach to understanding and making use of the components and mechanics of biodiversity. Providing a comprehensive and highly practical exploration of the subject, Biodiversity in Agricultural Production Systems examines abiotic ecosystem diversity and biological complexity at every relevant level. Leading researchers detail subspecies diversity, covering ecotypes, lifecycles, genes, physiology, and behavior. They also discuss species richness and supraspecies diversity, which includes foodweb interactions and non-trophic relationships, as well as above- and belowground relationships. Exploring various facets of agricultural crops and cultivation practices, this inter-disciplinary volume- Gives an overview of the pore space dynamic in agroecosystems where most soil microorganisms reside, including bacteria, fungi, protozoa, nematodes, and Tardigrada Examines the highly diverse and prominent role played by earthworms Looks at the metabolic processes occurring in soils that result in the release of greenhouse gases Outlines principles and strategies of order between interacting molecules, cells, species and communities Looks at mechanisms of competition, exploring growth regulation, transformation, and feeding strategies, as well as toxin production, mutation, and biofilm formation Discusses matter recycling and the diversity of microbial metabolism in soils Shows how long-term observation plots are used to assess soil quality Biodiversity in Agricultural Production Systems provides important information for those involved with researching and implementing sustainable agricultural systems, as well as those addressing specific challenges related to soil degradation, water management, and climatic impacts. It also provides recent research and fresh perspectives to enhance the approaches of those working in horticulture, biology, and the environmental sciences.
Author : Soumya Mukherjee
Publisher : Springer Nature
ISBN 13 : 3030849856
Total Pages : 499 pages
Book Rating : 4.0/5 (38 download)
Download or read book Rhizobiology: Molecular Physiology of Plant Roots written by Soumya Mukherjee and published by Springer Nature. This book was released on 2021-12-07 with total page 499 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the recent advancements in the role of various biomolecules in regulating root growth and development. Rhizobiology is a dynamic sub discipline of plant science which collates investigations from various aspects like physiology, biochemistry, genetic analysis and plant–microbe interactions. The physiology and molecular mechanisms of root development have undergone significant advancements in the last couple of decades. Apart from the already known conventional phytohormones (IAA, GA, cytokinin, ethylene and ABA), certain novel biomolecules have been considered as potential growth regulators or hormones regulating plant growth and development. Root phenotyping and plasticity analysis with respect to the specific functional mutants of each biomolecule shall provide substantial information on the molecular pathways of root signaling. Special emphasis provides insights on the tolerance and modulatory mechanisms of root physiology in response to light burst, ROS generation, agravitrophic response, abiotic stress and biotic interactions. Root Apex Cognition: From Neuronal Molecules to Root-Fungal Networks and Suberin in Monocotyledonous Crop Plants: Structure and Function in Response to Abiotic Stresses” are available open access under a Creative Commons Attribution 4.0 International License via link.springer.com. Chapters “Root Apex Cognition: From Neuronal Molecules to Root-Fungal Networks and Suberin in Monocotyledonous Crop Plants: Structure and Function in Response to Abiotic Stresses” are available open access under a Creative Commons Attribution 4.0 International License via link.springer.com.
Author : Muriel E. Rhodes-Roberts
Publisher :
ISBN 13 :
Total Pages : 288 pages
Book Rating : 4.3/5 (91 download)
Download or read book Bacteria and Plants written by Muriel E. Rhodes-Roberts and published by . This book was released on 1982 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interactions between bacteria and plants in the root environment; Nitrogen fixation by free-living bacteria associated with plants: fact or fiction? Symbiotic nitrogen fixation in plants; Entry and establishment of pathogenic bacteria in plant tissues; The progression of bacterial disease withim plants; Interaction of wall-free prokaryotes with plants; The biology of the crown gall: a plant tumour induced by Agrobacterium tumefaciens; Bacterial diseases of food plants: an overiew; The effect of bacteria on post-harvest quality of vegetables and fruits, with particular reference to spoilage; The production of foods and beverages from plant materials by micro-organisms; Contamination of food plants and plant products with bacteria of publie health significance; Bacteria in frozen vegetables; Toxic bacterial dusts associated with plants; Light microscope techniques for the microbiological examination of plant materials; Selected abstracts of papers presented at the summer conference.
Author : Inamuddin
Publisher : Springer Nature
ISBN 13 : 303048985X
Total Pages : 433 pages
Book Rating : 4.0/5 (34 download)
Download or read book Methods for Bioremediation of Water and Wastewater Pollution written by Inamuddin and published by Springer Nature. This book was released on 2020-10-05 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents advanced techniques for wastewater treatment and the chapters review the environmental impact of water pollution, the analysis of water quality, and technologies for the preservation of water resources. Also outlined in this volume is the bioremediation of heavy metals, dyes, bisphenols, phthalates, cyanobacteria in contaminated water and wastewater. Another focus of this book is the use of natural remediation techniques such as bacterial biofilms and enzymes.
Author : P. Ponmurugan
Publisher : Cambridge Scholars Publishing
ISBN 13 : 1527548597
Total Pages : 220 pages
Book Rating : 4.5/5 (275 download)
Download or read book Microbial Biodiversity written by P. Ponmurugan and published by Cambridge Scholars Publishing. This book was released on 2020-03-18 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biodiversity is among the richest treasures of the earth. Despite their small size, microbes play a vital role in environmental monitoring and making the earth sustainable. Microorganisms preserve and assist plants and animals o either directly or indirectly, and, due to their omnipresence in nature, they inhabit conditions such as extreme temperatures, water, soil, salt, medical wastes, agricultural wastes, and air. Microbes are also important in human culture and play an essential role in existence of life. They are present in food fermentation, sewage treatment, medical, agricultural, and soil waste, antibiotics, soil fertility, model organisms, and human microbiota, aid with decomposition, and are responsible for infectious diseases. This volume represents an important contribution to the field, highlighting the importance of microbial biodiversity to society.
