Exploring Bacterial Communities and Their Functions for Soil Health Under Different Cropping Systems PDF Download
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Author: Ru Li
Publisher:
ISBN:
Category :
Languages : en
Pages : 342
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Book Description
Bacterial community -- healthy soil -- cropping systems.
Author: Ru Li
Publisher:
ISBN:
Category :
Languages : en
Pages : 342
Get Book Here
Book Description
Bacterial community -- healthy soil -- cropping systems.
Author: Ru Li
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Rhizosphere and soil bacteria are important drivers in nearly all biochemical cycles in terrestrial ecosystems and participate in maintaining health and productivity of soil in agriculturally managed systems. However, the effect of agricultural management systems on bacterial communities is still poorly understood. In this study, cultural methods and advanced molecular methods (terminal restriction fragment length polymorphism (TRFLP) and 454- pyrosequencing) were used to identify shifts in soil and rhizosphere bacterial diversity, community composition, and functions under different cropping systems in Manitoba, Canada. This included monoculture vs. rotation, zero tillage vs. conventional tillage, and organic farming vs. conventional farming. Results showed that: (1) different cropping systems did not significantly influence the diversity of bacterial communities. However, a significant variation in relative abundances of bacterial communities at both the phylum and genus level was observed among different cropping systems. Compared to conventional farming systems, organic farming system had a higher percentage of the phylum Proteobacteria (many Plant Growth Promoting Rhizosbacteria) and a lower percentage of the phylum Actinobacteria. When canola monoculture was compared to wheat-oat-canola-pea rotation, a significantly higher percentage of Proteobacteria and a lower percentage of Actinobacteria were found in the rotational system. Wheat monoculture shared similar bacterial communities with wheat-oat-canola-pea rotation. Zero tillage did not change bacterial community profiles except for an increase in Firmicutes (many PGPR), compared to conventional tillage. At the genus level, significant differences were found for the dominant genera Pseudomonas, Rhizobium, Stenotrophomonas, Brevundimonas, Burkholderia, Marmoricola, Microlunatus, and Solirubrobacter. The bacterial distribution was strongly associated with soil pH. (2) The cropping systems also influenced the antibiotic-producing Pseudomonas populations determined through PCR-based screening for the detection of genes involved in the biosynthesis of antibiotics. It was found that pyrrolnitrin- and phenazine- producing Pseudomonas spp. were more prevalent in the soil under zero tillage and organic farming systems, while 2,4-DAPG and pyoluteorin-producing strains were not found in this study. This comprehensive study provided fundamental information on how different cropping systems affect soil and rhizosphere bacterial communities, which can be used to guide Manitoba farmers to choose proper farming systems to maintain soil health and increase PGPR populations in soil.
Author: Carmine Crecchio
Publisher: MDPI
ISBN: 3039437437
Category : Science
Languages : en
Pages : 98
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Book Description
The book contains research articles and reviews recently published online for the MDPI journal Diversity, in the Special Issue "Genetic diversity of soil bacterial communities". The issue aimed to collect up to date information from the international scientific community to get insight in the "black box", as soil has been defined in the last decades, focusing in detail on the role that the microbial communities have in soil processes such as carbon and nutrient fluxes and on their genetic and functional diversity. The book meets the interests of scientific communities directly involved in the topics investigated, as well as of PhD students, scholars, professional organizations interested in improving their knowledge on a group of organisms considered vitally important to the maintenance and sustainability of the biosphere, where soil has a key role as an important natural resource.
Author: Dhananjaya Pratap Singh
Publisher: Springer Nature
ISBN: 9813290846
Category : Technology & Engineering
Languages : en
Pages : 491
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Book Description
Microbial communities and their multi-functionalities play a crucial role in the management of soil and plant health, and thus help in managing agro-ecology, the environment and agriculture. Microorganisms are key players in N-fixation, nutrient acquisition, carbon sequestration, plant growth promotion, pathogen suppression, induced systemic resistance and tolerance against stresses, and these parameters are used as indicators of improved crop productivity and sustainable soil health. Beneficial belowground microbial interactions in the rhizosphere help plants combat abiotic challenges in the unfavourable environmental conditions of native soils. These microorganisms and their products offer potential solutions for agriculture in problematic areas since they are able to degrade xenobiotic compounds, pesticides and toxic chemicals and help remediate heavy metals in the rhizosphere and so make deteriorated soils suitable for crop production. This book compiles the latest research on the role of microbes in the rhizosphere and agro-ecology, covering interaction mechanisms, microbe-mediated crop production, plant and soil health management, food and nutrition, nutrient recycling, land reclamation, clean water systems, agro-waste management, biodegradation, bioremediation, biomass and bioenergy, sanitation and rural livelihood security. It is a comprehensive reference resource for agricultural activists, policymakers, environmentalists and advisors working for governments, non-governmental organizations and industries, helping them update their knowledge of this important, but often neglected, research area.
Author: Bhoopander Giri
Publisher: Springer Nature
ISBN: 3030443647
Category : Science
Languages : en
Pages : 408
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Book Description
This book gathers the latest insights into soil health and its sustainability, providing an up-to-date overview of the various aspects of soil quality and fertility management, e.g., plant-microbe interactions to maintain soil health; and the use of algal, fungal and bacterial fertilizers and earthworms for sustainable soil health and agricultural production. It first discusses the past, present, and future scenarios of soil health, and then explores factors influencing soil health, as well as the consequences of degradation of soil health for sustainable agriculture. Lastly it highlights solutions to improve and maintain soil health so as to achieve greater productivity and sustainability without damaging the soil system or the environment. Soil health is defined as the capacity of a soil to function within ecosystem frontiers, to sustain biological productivity, to maintain environmental quality and to promote plant, animal and human health. Soil health is established through the interactions of physical, chemical and biological properties, e.g., soil texture, soil structure, and soil organisms. Healthy soil provides adequate levels of macro- and micronutrients to plants and contains sufficient populations of soil microorganisms. As a result of the increasingly intensified agriculture over the past few decades, soils are now showing symptoms of exhaustion and stagnating or declining crop yields. Exploring these developments as well as possible solutions based on holistic and sustainable approaches, this book is a valuable resource for researchers in the area of soil and environmental science, agronomy, agriculture, as well as students in the field of botany, ecology and microbiology.
Author: Geoffrey R. Dixon
Publisher: Springer Science & Business Media
ISBN: 9048194792
Category : Science
Languages : en
Pages : 444
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Book Description
Soils into which crop plants root and from which they obtain essential minerals and water contain huge arrays of microbes. Many have highly beneficial effects on crop growth and productivity, others are pathogens causing diseases and losses to yield and quality, a few microbes offer protection from these pathogenic forms and others have little or no effect. These intimate and often complex inter-relationships are being explored with increasing success providing exciting opportunities for increasing crop yields and quality in sustainable harmony with the populations of beneficial soil microbes and to the detriment of pathogens. This book explores current knowledge for each of these aspects of soil microbiology and indicates where future progress is most likely to aid in increasing crop productivity by means which are environmentally benign and beneficial.
Author: Shrivardhan Dheeman
Publisher: Springer
ISBN: 9789819734726
Category : Science
Languages : en
Pages : 0
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Book Description
This comprehensive exploration delves into the pivotal role of bacteria in soil health, elucidating their mechanisms in organic matter decomposition, metal facilitation, bioremediation of stubborn materials, and nutrient cycling essential for soil fertilization, plant health and conditioning. In an agricultural ecosystem, soil nutrients are the backbone, sourced either externally through fertilizers or internally by the action of soil bacteria. Understanding the intricate concert of soil bacteria within the ecological framework offers three significant advantages: revitalizing soil health and quality (soil reclamation), enhancing soil nutrient availability (biofertilization), and amplifying crop yields in an environmentally sustainable manner (sustainable agriculture). This book caters to a diverse audience including educators, researchers, technocrats, policymakers, agricultural foundations, non-governmental organizations, and particularly research students. It also serves as supplementary material for undergraduate and graduate students across various disciplines such as agriculture, microbiology, biotechnology, forestry, ecology, soil science, and environmental sciences. Additionally, it provides invaluable insights for both national and international agricultural scientists and soil ecologists, enriching their understanding of soil ecosystems and agricultural sustainability.
Author: Tapan Kumar Adhya
Publisher: Springer
ISBN: 9811073805
Category : Science
Languages : en
Pages : 240
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Book Description
This book presents a comprehensive collection of articles illustrating the importance of microbial community structure and function for ecosystem sustainability and environmental reclamation. It addresses a diverse range of topics, including microbial diversity, physiology, genomics, ecosystem function, interaction, metabolism, and the fruitful use of microbial communities for crop productivity and environmental remediation. In addition, the book explores issues ranging from general concepts on the diversity of microorganisms in soil, and ecosystem function, to the evolution and taxonomy of soil microbiota, with future prospects. It covers cutting-edge methods in soil microbial ecological studies, rhizosphere microflora, the role of organic matter in plant productivity, biological nitrogen fixation and its genetics, microbial transformation of plant nutrients in soil, plant-growth-promoting rhizobacteria, and organic matter transformation. The book also discusses the application of microbes in biodegradation of xenobiotic contaminants. It covers bio-fertilizers and their role in sustainable agriculture and soil health, biological control of insect pests and plant pathogens, and the latest tools of omics in soil microbiology, i.e. genomics, proteomics, transcriptomics and metabolomics, which offer pioneering approaches to the exploration of microbial structure and function.
Author: Kari E. Dunfield
Publisher: Burleigh Dodds Agricultural Sc
ISBN: 9781801464741
Category : Technology & Engineering
Languages : en
Pages : 0
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Book Description
This collection summarises the wealth of recent research in understanding the fundamental importance of soil microbiomes in optimising soil and crop health. The book reviews advances in analytical techniques, the composition and dynamics of soil microbial communities and how they can be enhanced to deliver a range of ecosystem services.
Author:
Publisher:
ISBN:
Category :
Languages : de
Pages :
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Book Description
Bacteria are key players in nutrient cycles and energy transduction in soil. Although soil bacterial communities have been studied for several decades, our knowledge on their structure, dynamics ecosystem function is still limited. The aim of this thesis was to contribute to the understanding of these communities. In the first two studies, the impact of fertilizer treatment, two distinct aspen demes, soil properties (pH, water content, and C/N ratio), and sampling time on the total (DNA level) and the metabolic active (RNA level) bacterial community was analyzed. Thus, soil samples were col...
