Download or read book Identification of Rhizobacteria from Rice and Maize for Plant Growth Promotion and Biological Control of Rice Diseases written by Zakira Naureen Ashraf and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The scope of this study was the selection of bacterial strains from rice and maize and evaluation of their potential for plant growth promotion and biological control of rice diseases. 103 bacterial strains isolated from roots, rhizosphere and soil of rice and maize were assayed for production of siderophores, antibiotics, hydrolytic enzymes and HCN. From these, 33 strains were found to produce siderophores, eight were capable of producing diffusible antibiotics and four produced volatile antibiotics, while only one strain was found to produce HCN. Dual culture antagonistic assays were used to select strains capable of inhibiting growth of three major rice pathogens, Xanthomonas oryzae pv. oryzae (bacterial blight), Rhizoctonia solani (sheath blight) and Magnaporthe grisea (rice blast). When inoculated into soils, a number of strains suppressed the incidence of rice blast and sheath blight diseases in two different rice varieties. A strong correlation between siderophore production and in vitro antagonism was found, which extended to biocontrol assays for rice blast disease in the variety Super Basmati, but not Azucena, suggesting that bacterial strains use different mechanisms in suppressing the same pathogen in different rice varieties. As there was no direct contact between the pathogen and bacterial strains, the proposed mechanism for disease suppreSSIOn is induced systemic resistance (ISR). Gene expression analysis for sheath blight experiments confirmed the enhanced induction of chitinase IIb and the peroxidase P0X22.3 by selected bacterial strains. Selected bacterial strains from rice were also observed to enhance plant growth and yield, and this may be related to their ability to fix nitrogen (detected by acetylene reduction assay), solubilize phosphates and/or produce auxin. This study led to the isolation, selection and evaluation of potentially useful bacterial strains from rice and maize that were genetically diverse and persistently abundant in the rhizosphere and can be further utilized for integrated pest management of rice. Moreover, as these strains are . also capable of improving plant health and enhancing grain yield, they could be further utilized either individually or in consortia for integrated nutrient management of rice and maize.
Download or read book Identification characterization and mechanisms of potential rhizobacterial strains for biological control of bacterial brown stripe and bacterial sheath rot of rice growth promotion and abiotic stress resistance in rice written by Kaleem Ullah and published by GRIN Verlag. This book was released on 2019-03-01 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: Doctoral Thesis / Dissertation from the year 2014 in the subject Biology - Botany, grade: 4.00, Zhejiang University Of Science and Technology, course: College of Agriculture & Biotechnology, language: English, abstract: Plant growth-promoting rhizobacteria (PGPR) are free-living, soil-borne bacteria that colonize the rhizosphere and, when applied to crops, enhance the growth of plants, protect from disease and induce systematic resistance against abiotic stress. The present study was undertaken to estimate the potential use of rhizobacterial strains to control the bacterial brown stripe (BBS) caused by A. avenae subsp. avenae and brown sheath rot caused by P. fuscovaginae respectively, under in vitro and in vivo conditions, and study their potential mechanisms. In addition, a consortium of these two PGPRs and different chemical inducers were used to induce systematic resistance in rice plants against abiotic stress including cold and drought.
Download or read book Rhizosphere Engineering written by Ramesh Chandra Dubey and published by Academic Press. This book was released on 2022-02-15 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rhizosphere Engineering is a guide to applying environmentally sound agronomic practices to improve crop yield while also protecting soil resources. Focusing on the potential and positive impacts of appropriate practices, the book includes the use of beneficial microbes, nanotechnology and metagenomics. Developing and applying techniques that not only enhance yield, but also restore the quality of soil and water using beneficial microbes such as Bacillus, Pseudomonas, vesicular-arbuscular mycorrhiza (VAM) fungi and others are covered, along with new information on utilizing nanotechnology, quorum sensing and other technologies to further advance the science. Designed to fill the gap between research and application, this book is written for advanced students, researchers and those seeking real-world insights for improving agricultural production. - Explores the potential benefits of optimized rhizosphere - Includes metagenomics and their emerging importance - Presents insights into the use of biosurfactants
Download or read book Bacterial Diseases of Rice and Their Management written by Deepti Srivastava and published by CRC Press. This book was released on 2023-05-05 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rice is a major staple food and a source of nutrition for over 3.5 billion people worldwide. It is, however, susceptible to a number of bacterial diseases that decrease its yield and quality. This book covers the bacterial diseases of rice and their management, focusing on sustainable management methods that involve biological control, conventional breeding, and molecular methods. It covers the biology of rice bacterial blight pathogens, virulence determinants, and host defense factors of bacterial blight pathogen-rice interactions. Different resistance rice cultivars, their resistance loci, and quantitative trait loci mapping in the important rice cultivars are also discussed. The book presents biological studies of the major rice bacterial diseases (rice bacterial brown stripe disease, bacterial leaf streak disease, rice bacterial panicle blight disease, rice bacterial foot rot, sheath brown rot disease) and presents comparative analyses of conventional breeding, and molecular management approaches, along with examples.
Download or read book PGPR Biocontrol and Biofertilization written by Zaki Anwar Siddiqui and published by Springer Science & Business Media. This book was released on 2006-01-19 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: PGPR have gained world wide importance and acceptance for agricultural benefits. These microorganisms are the potential tools for sustainable agriculture and the trend for the future. Scientific researches involve multidisciplinary approaches to understand adaptation of PGPR to the rhizosphere, mechanisms of root colonization, effects on plant physiology and growth, biofertilization, induced systemic resistance, biocontrol of plant pathogens, production of determinants etc. Biodiversity of PGPR and mechanisms of action for the different groups: diazotrophs, bacilli, pseudomonads, and rhizobia are shown. Effects of physical, chemical and biological factors on root colonization and the proteomics perspective on biocontrol and plant defence mechanism is discussed. Visualization of interactions of pathogens and biocontrol agents on plant roots using autofluorescent protein markers has provided more understanding of biocontrol process. Commercial formulations and field applications of PGPR are detailed.
Download or read book Microbial Inoculants in Sustainable Agricultural Productivity written by Dhananjaya Pratap Singh and published by Springer. This book was released on 2016-02-22 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: How to achieve sustainable agricultural production without compromising environmental quality, agro-ecosystem function and biodiversity is a serious consideration in current agricultural practices. Farming systems’ growing dependency on chemical inputs (fertilizers, pesticides, nutrients etc.) poses serious threats with regard to crop productivity, soil fertility, the nutritional value of farm produce, management of pests and diseases, agro-ecosystem well-being, and health issues for humans and animals. At the same time, microbial inoculants in the form of biofertilizers, plant growth promoters, biopesticides, soil health managers, etc. have gained considerable attention among researchers, agriculturists, farmers and policy makers. The first volume of the book Microbial Inoculants in Sustainable Agricultural Productivity - Research Perspectives highlights the efforts of global experts with regard to various aspects of microbial inoculants. Emphasis is placed on recent advances in microbiological techniques for the isolation, characterization, identification and evaluation of functional properties using biochemical and molecular tools. The taxonomic characterization of agriculturally important microorganisms is documented, along with their applications in field conditions. The book exploresthe identification, characterization and diversity analysis of endophytic microorganisms in various crops including legumes/ non-legumes, as well as the assessment of their beneficial impacts in the context of promotingplant growth. Moreover, it provides essential updates onthe diversity and role of plant growth promoting rhizobacteria (PGPR) and arbuscular mycorrhizal mycorrhizal fungi (AMF). Further chaptersexamine in detailbiopesticides, thehigh-density cultivation of bioinoculants in submerged culture, seed biopriming strategies for abiotic and biotic stress tolerance, andPGPR as abio-control agent. Given its content,the book offers a valuable resource for researchers involved in research and development concerningPGPR, biopesticides and microbial inoculants.
Download or read book Bacteria in Agrobiology Disease Management written by Dinesh K. Maheshwari and published by Springer Science & Business Media. This book was released on 2013-01-11 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt: The future of agriculture greatly depends on our ability to enhance productivity without sacrificing long-term production potential. The application of microorganisms, such as the diverse bacterial species of plant growth promoting bacteria (PGPB), represents an ecologically and economically sustainable strategy. The use of these bio-resources for the enhancement of crop productivity is gaining importance worldwide. "Bacteria in Agrobiology: Disease Management" discusses various aspects of biological control and disease suppression using bacteria. Topics covered include: fluorescent pseudomonads; siderophore-producing PGPR; pseudomonas inoculants; bacillus-based biocontrol agents; bacterial control of root and tuber crop diseases; fungal pathogens of cereals; soil-borne fungal pathogens; peronosporomycete phytopathogens; and plant parasitic nematodes.
Download or read book Plant Growth Promoting Rhizobacteria PGPR and Medicinal Plants written by Dilfuza Egamberdieva and published by Springer. This book was released on 2015-02-07 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the various applications of microorganisms in improving plant growth, health and the efficiency of phytochemical production. The chapters trace topics such as the role of PGPRs in improving salt stress and heavy metal tolerance in plants; the prevention and control of plant diseases; boosting soil fertility and agriculture productivity; the induction of secondary metabolite biosynthesis in medicinal and aromatic plants; the enhancement of phytochemical levels, and the action mechanisms, diversity and characterization of PGPRs. The reviews will be of interest for scientists in the fields of agriculture, microbiology, soil biology, plant breeding and herbal medicinal products.
Download or read book Plant Associated Bacteria written by Samuel S. Gnanamanickam and published by Springer Science & Business Media. This book was released on 2007-09-29 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is envisioned as a resource for researchers working with beneficial and harmful groups of bacteria associated with crop plants. The book is divided into two parts, with Part I on beneficial bacteria including chapters on symbiotic nitrogen fixers and rhizosphere bacteria. The second part consists of detailed descriptions of 8 genera of plant pathogenic bacteria, including Agrobacterium and Herbaspirillum. Each chapter covers terminology, molecular phylogeny and more. soft-rot, Pseudomonas, Xanthomonas, Ralstonia, Burkholderia and Acidovorax There is an opening chapter on the plant-associated bacteria survey, molecular phylogeny, genomics and recent advances. And each chapter includes terminology/definitions, molecular phylogeny, methods that can be used (both traditional and latest molecular tools) and applications
Download or read book Nitrogen in Agricultural Systems written by James Stuart Schepers and published by ASA-CSSA-SSSA. This book was released on 2008 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt: Review of the principles and management implications related to nitrogen in the soil-plant-water system.
Download or read book Microbial Diversity written by Asha Sinha and published by Daya Books. This book was released on 2007 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: The scope of microbiology has enlarged tremendously during last 25-30 years. The present volume deals about the microbial diversity comprising 25 reviews papers and research papers from outstanding scientists of India. This will provide a new sight in basic and applied research related to plants and microbial diversity. It mainly includes, fungal, bacterial and nematode diversity, mushrooms cultivation, biofertilizers, disease resistance, biological control, plant disease management, plant diseases and role of microbes in soil fertility. The primary goal of preparing this Volume is to present a balanced view of the diversity and provide the fundamental information that will allow students and scientists to understand the complexities of those issue. This book is suitable for students of post-graduate, research scholars, senior research fellow and research associate in mycology, microbiology, plant pathology, plant bacteriology and plant protection. It will also be extremely useful to the teachers, instructors and scientists engaged in pursuit highger knowledge in this area. Contents Chapter 1: Legume-Rhizobia Symbiosis in Sustainable Agriculture by A Hemantaranjan; Chapter 2: Diversity in Fungi Associated with Seeds by M N Khare and M S Bhale; Chapter 3: Use of Various Agricultural Residus and By-products for Mushroom Cultivation: A Review by R C Ram; Chapter 4: Biodegradation of Rice Residues by Soil Mycoflora in Rice Wheat Cropping System by Vibha and Asha Sinha; Chapter 5: Diversity in Stripe Rust Flora and Matching Genes in Wheat: The Indian Scenario by V C Sinha, Rajiv K Sharma and Sanjay Kumar; Chapter 6: Fungi and Grain Storage in Tropics by Jai Prakash Rai, Alok Kumar Singh, Raghavendra Singh and Asha Sinha; Chapter 7: Indigenous Soil Microbial Biodiversity: Key to Sustainable Agriculture by D P Singh and B K Sarma; Chapter 8: Role of Microbial Agents in Insect Pest Management by Nitin Joshi and Manoj Kumar Pandey; Chapter 9: Induces Resistance: A Biotechnological Approach for Induction of Defense-related Molecules in Plant Disease Management by Anuj Kumar, Vinod Kumar and R N Kharwar; Chapter 10: Micronutrients: Key for Disease Management by Raghavendra Singh, Jai Prakash Rai & Alok Kumar Singh; Chapter 11: Postharvest Diseases: Strategies and Management by R C Ram; Chapter 12: Rhizoctonia solani in Reference to Banded Leaf and Sheath Blight of Maize by Alok Kumar Singh, Jai Prakash Rai and Satish Chand Saxena; Chapter 13: Rhizobium: A Potential Biofertilizer by Neerja Asthana and Niranjan Kumar; Chapter 14: Participatory Production of Trichoderma by Ramesh Chand, Chanda Khushwaha, V K Chandola and A K Joshi; Chapter 15: Characterization of Plant Growth Promoting Rhizobacteria (PGPR) by S Ameer Basha, B K Sarma, K Annapurna, Senthil and U P Singh; Chapter 16: Screening of Sunflower Genotypes for Resistance or Tolerance Against Alternaria Blight by A V V Reddy, C V C M Reddy, U Rajeswari, B Sinha and C Appunu; Chapter 17: Effect of Glomus fasciculatum AM Fungus and Nitrogens on Biomass Yield, Chlorophyll, Juice and Sucrose Contents of Saccharum officinarum L by Kamal Prasad and R S Bilgrami; Chapter 18: Morphology and Pathogenicity of Isolated of Fusarium moniliforme Causing Pokkah Boeng Disease of Sugarcane in Maharashtra by A S Patil, Hema Singh, R R Sharma and G P Rao; Chapter 19: Management of Root-knot Nematode (Meloidogyne incognita) on Lentil (Lens esculenta Monch) by Amar Bahadur, D P Singh and Pramila Gupta; Chapter 20: Studies on Some Dominant Species of Aspergilli Isolated from Soil of Rice-Wheat Cropping System by Asha Sinha, P S Kalhapure and Rakesh K Singh; Chapter 21: Evaluation of Casing Media for Cultivation of Agaricus bisporus (Lange) Imbach by T S Shandilya and R S Jarial; Chapter 22: Strain Improvement in Oyster Mushroom (Pleurotus spp) by Mithilesh Kumar, Harsh Kumar & Dayaram; Chapte 23: Development of New Sterilization Techniques of Substrate for Oyster Mushroom by R C Ram and Deepak Gupta; Chapter 24: Comparative Efficiency of Various Substrates and Supplements on Growth Behaviour and Yield Potential of Pleurotus florida by K K Gautam and R C Ram; Chapter 25: New Trends in Identification of VA Mycorrhizal Fungi by Sudhir Chandra, H K Kehri, Rolli Verma and Sudha Singh.
Download or read book Recent Advances in Biofertilizers and Biofungicides PGPR for Sustainable Agriculture written by Patricio S. Faylon and published by Cambridge Scholars Publishing. This book was released on 2014-11-10 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global concern over the demerits of chemicals in agriculture has diverted the attention of researchers towards using the potential of PGPR in agriculture. This book contains many useful and important research papers pertaining to the use of bio-fertilizers and bio-fungicides for sustainable agriculture. This volume is presented in an easy-to-understand manner,with well-illustrated protocols on the production to commercialization of PGPR. The chapters on commercial potential, trade and regulatory issues among Asian countries are worthwhile additions. As such, this book will prove useful for students, researchers, teachers, and entrepreneurs in the area of PGPR and its allied fields.
Download or read book Efficacy of Rhizobacteria for Growth Promotion and Biocontrol of Fusarium Oxysporum and Rhizoctonia Solani on Wheat in South Africa written by Theresa Pretorius and published by . This book was released on 2012 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant growth promoting rhizobacteria (PGPR) are found in the rhizosphere and directly contribute to nutrient availability and plant growth. Due to the global move away form reliance on chemical fertilisers and crop protection products, plant growth promoting rhizobacteria (PGPR) and their application for improving crop production is receiving much attention. In the current work the selected PGPR isolates from the University of Pretoria PGPR Culture Collection were evaluated on wheat seedlings for their ability to promote seedling growth and control of selected root diseases. The ability of the PGPR to control root and crown rot of wheat caused by Fusarium oxysporum, F. graminearum and Rhizoctonia solani was evaluated in greenhouse pot trials. In addition the seedling tray assay was also evaluated as a means to screen PGPR for biocontrol. Under the test conditions, the seedling tray assay was unsuccessful as a method to screen the PGPR for biocontrol of wheat root pathogens. In the greenhouse pot trials several isolates were able to improve the growth of wheat seedlings cultivated in pathogen inoculated soil. For growth promotion the bacterial isolates were assessed in greenhouse trials. Following initial selection trials further analyses were conducted with selected isolates to determine what effect the PGPR inoculum dose and fertiliser application has on growth promotion efficacy. The isolates T06, T07, T11, T13, T19, T21, T23 and T24 were most effective in promoting the growth of wheat seedlings in the greenhouse. The dose response and fertiliser trials indicated that these factors do affect isolate activity. To facilitate understanding of the isolates and their activities, the isolates that performed well in the greenhouse were identified through 16S rRNA sequence data and selected modes of action determined. The isolates were predominantly Bacilli, from the genera Bacillus, Lysinibacillus and Paenibacillus. In vitro assessments revealed that the isolates have a wide spectrum of activity, including phosphate solubilisation, indole acetic acid production, growth in nitrogen free media, inhibition of pathogens in dual culture, chitinase production and siderophore production. A selection protocol was developed to assist with the selection of the best isolates. Based on ratings given for the greenhouse and in vitro assay the top performing isolate were selected. Spider diagrams were then constructed to visually represent each isolate’s performance. The following best performing isolates were selected as a) T10 (Bacillus cereus) for control of R. solani, b) T28 (Bacillus cereus) for control of F. oxysporum, c) T31 (Bacillus cereus) for control of F. graminearum, d) T13 (Bacillus sp. / Bacillus pumilus) for growth promotion of wheat and e) T29 (Paenibacillus alvei) as the most versatile isolate.
Download or read book Phytobiomes Current Insights and Future Vistas written by Manoj Kumar Solanki and published by Springer Nature. This book was released on 2020-07-10 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: To satisfy the food demands of the global population, advanced technology based research is needed, that can extract the information from the plant metabolism and microbial gene pool and use it for improving plant health and productivity. Modern biotechnological tools have the ability to unlock the limitations of agricultural practices. However, the application of these tools is not well equipped. Moreover, eco-friendly agriculture by microbial inoculants is known to have positive influences on soil/plant health. Therefore it is relevant to explore the plant associated microbial niches, especially endophytes, epiphytes, and soil microbes and understand how they are benefitting each other. It can open new insights to develop sustainable agriculture practices by using consortia of microbes as plant helpers that recover the imbalanced agriculture systems and manage pathogenic diseases. This book presents the updates about the plant associated microbiomes and their contemporary uses. It covers the knowledge gap between soil and plant helper microbiomes and their application in the agriculture and allied sectors. Modern insights of phytobiomes are explored in various chapters on a variety of interrelated aspects of the fascinating areas like plant microbial interaction, integrated pest management, soil fertility intensification, sustainable crop production, and disease management. Sections in the book describe how to plant beneficial microbiomes have been utilized for sustainable green farming, with the aim to resolve the global food problem without harming the soil and environment health. This book is intended for everyone who is involved in agriculture, microbial biotechnology, bioinformatics, and all disciplines related to microbial biotechnology. These include academic students, scientists, and researchers at universities, institutes, industries, and government organizations who want to understand microbial linkages in a shorter time. It contains basic information that will be help to the non-specialist readers to understand progressive research.
Download or read book Plant Growth Promoting Rhizobacteria for Sustainable Stress Management written by R. Z. Sayyed and published by Springer Nature. This book was released on 2019-10-11 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: Attaining sustainable agricultural production while preserving environmental quality, agro-ecosystem functions and biodiversity represents a major challenge for current agricultural practices; further, the traditional use of chemical inputs (fertilizers, pesticides, nutrients etc.) poses serious threats to crop productivity, soil fertility and the nutritional value of farm produce. Given these risks, managing pests and diseases, maintaining agro-ecosystem health, and avoiding health issues for humans and animals have now become key priorities. The use of PGPR as biofertilizers, plant growth promoters, biopesticides, and soil and plant health managers has attracted considerable attention among researchers, agriculturists, farmers, policymakers and consumers alike. Using PGPR as bioinoculants can help meet the expected demand for global agricultural productivity to feed the world’s booming population, which is predicted to reach roughly 9 billion by 2050. However, to provide effective bioinoculants, PGPR strains must be safe for the environment, offer considerable plant growth promotion and biocontrol potential, be compatible with useful soil rhizobacteria, and be able to withstand various biotic and abiotic stresses. Accordingly, the book also highlights the need for better strains of PGPR to complement increasing agro-productivity.
Download or read book Plant Growth and Health Promoting Bacteria written by Dinesh K. Maheshwari and published by Springer Science & Business Media. This book was released on 2010-09-28 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt: To cope with the increasing problems created by agrochemicals such as plant fertilizers, pesticides and other plant protection agents, biological alternatives have been developed over the past years. These include biopesticides, such as bacteria for the control of plant diseases, and biofertilizer to improve crop productivity and quality. Especially plant growth promoting rhizobacteria (PGPR) are as effective as pure chemicals in terms of plant growth enhancement and disease control, in addition to their ability to manage abiotic and other stresses in plants. The various facets of these groups of bacteria are treated in this Microbiology Monograph, with emphasis on their emergence in agriculture. Further topics are Bacillus species that excrete peptides and lipopeptides with antifungal, antibacterial and surfactant activity, plant-bacteria-environment interactions, mineral-nutrient exchange, nitrogen assimilation, biofilm formation and cold-tolerant microorganisms.
Download or read book Biofertilizers written by Amitava Rakshit and published by Woodhead Publishing. This book was released on 2021-03-24 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biofertilizers, Volume One: Advances in Bio-inoculants provides state-of-the-art descriptions of various approaches, techniques and basic fundamentals of BI used in crop fertilization practices. The book presents research within a relevant theoretical framework to improve our understanding of core issues as applied to natural resource management. Authored by renowned scientists actively working on bio-inoculant, biofertilizer and bio-stimulant sciences, the book addresses the scope of inexpensive and energy neutral bio-inoculant technologies and the impact regulation has on biofertilizer utilization. This book is a valuable reference for agricultural/environmental scientists in academic and corporate environments, graduate and post-graduate students, regulators and policymakers. - Informs researchers on how to develop innovative products and technologies that increase crop yields and quality while decreasing agricultural carbon footprints - Focuses on production, protocols and developments in the processing of bio-inoculants, bio-stimulants and bio-fertilizers - Summarizes the biologically active compounds and examines current research areas
