Download or read book Host endophyte pest Interactions of Endophytic Fusarium Oxysporum Antagonistic to Radopholus Similis in Banana Musa Spp written by Shahasi Yusuf Athman and published by . This book was released on 2006 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Host endophyte pest Interactions of Endophytic Fusarium Oxysporum Antagonistic to Radopholus Similis i in Banana Musa Spp written by Shahasi Yusuf Athman and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Radopholus similis is one of the key pests of banana in the East African Highlands and in the world. Although control of this pest has mainly relied on the use of clean planting material, re-infestation of plants in the field remains a critical concern. Alternative management options such as the use of fungal endophytes may be used to provide protection and extend plant life. In this study, a total of 35 endophytic Fusarium isolates were screened for the production of secondary metabolites antagonistic to R. similis in culture. Undiluted and diluted culture filtrates were tested against motile stages of R. similis and eggs. Tests were conducted using culture filtrates of the fungal isolates grown in banana corm broth. All isolates tested demonstrated some level of in vitro antagonistic activity on the mobility of R. similis mixed stages (males, females and juveniles). The percentage of immobilized nematodes increased with increase in the length of exposure time to culture filtrates. After 24 hrs exposure, up to 100% of nematodes were immobilized compared to 26.5% in control treatments. Mortality of mixed stages of R. similis exposed to culture filtrates for 24 hrs, followed by rinsing with sterile distilled water, demonstrated that the effects of culture filtrate treatment were irreversible, as nematodes did not recover and were considered dead. Nematode mortality rates after 24-hr exposure periods ranged from 76.4% to 100.0%. The effects of culture filtrates on R. similis motile stages increased with increasing culture filtrate concentration. Culture filtrates also demonstrated inhibitory effects on hatching of R. similis eggs. Radopholus similis males were more sensitive to culture filtrate treatment than females. The results obtained demonstrate the potential for using endophytic Fusarium isolates as biological control agents against R. similis and/or toxic derivatives as potential nematicides against the nematode.
Download or read book Banana Breeding written by Michael Pillay and published by CRC Press. This book was released on 2011-01-21 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the current world population growth of 1.2%, the earth can expect to house 9-10 billion people by 2050. Food production, too, must increase to accommodate these numbers. Easy growing, high calorie, nutritious foods, such as bananas are the top priority as a solution to this imminent problem. The first comprehensive compendium on bananas in rec
Download or read book Biological Control of Plant Parasitic Nematodes written by Keith Davies and published by Springer Science & Business Media. This book was released on 2011-06-27 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: The offered volume intends to review the biological control theme of phytonematodes from several prospects: ecological; applicative as well as commercial state of the art; understanding the mode-of-action of various biocontrol systems; interaction between the plant host, nematodes’ surface and microorganism’s; candidates for biocontrol; extrapolation of the wide knowledge existed in another systems for understanding biocontrol processes: C. elegans as a model and lessons from other natural systems; and exploiting advanced genomic tools to promote understanding biocontrol processes and thereafter improve specific biological control agents.
Download or read book Microbial Approaches for Insect Pest Management written by Omkar and published by Springer Nature. This book was released on 2022-01-01 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book brings together specialized information on modern aspects of applied microbiology in pest management. In the last few decades, the humans have witnessed major advancements in Life Sciences, as a result several new and powerful tools and techniques have evolved. This has led to great advancements in microbial nutrition, genetics and their application in different fields. In modern era of biotechnology, the microbes have provided solutions to many of the human problems and necessities and thus serve as human and farmers’ friends. The microbes have proved to be successful tools for the pest management. Similarly, there has been much advancement in the field of molecular biology, where many more techniques have evolved which can be helpful in the field of pest management too. Plant resistance, development of transgenic plants, and many more techniques are being considered the panacea to pest problems. On the other hand, there are wide spread concerns of the safety of these microbial and biotechnological interventions with nontarget organisms including humans. While the world stands divided on the ethical issues of these approaches and the many safety concerns, scientists believe that well thought of microbial and biotechnological interventions are probably the only safest ways possible for reducing pest attacks on crops. This is useful read for postgraduate students and teachers, plant protection practioners across the world and also useful for policy planners.
Download or read book Modes of Action of Non pathogenic Fusarium Oxysporum Endophytes for Bio enhancement of Banana Toward Radopholus Similis written by Thi-Thanh-Tam Vu and published by Cuvillier Verlag. This book was released on 2005 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plant Defence Responses Against Radopolus Similis in East African Highland Bananas EAHB AAA Inoculated with Endophytic Non pathogenic Fusarium Oxysporum written by Pamela Paparu and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In the interactions between fungal endophytes and their hosts, the host may benefit through protection against pathogens and pests, growth promotion and tolerance to abiotic stresses. Non-pathogenic Fusarium oxysporum endophytes of banana have been shown to reduce the damage caused by the Cosmopolitus sordidus and the burrowing nematode Radopholus similis. The mode of protection against the burrowing nematode involves induced resistance, but the molecular basis of this resistance yet to be demonstrated. It has further been reported that protection of the host by multiple endophytes can lead to better control of target pests, probably because of the multiple modes of action involved. This phenomenon, however, has not been fully demonstrated for F. oxysporum endophytes of banana. This study aimed to investigate the molecular and biochemical basis of endophyte protection of East African Highland bananas (EAHB) against C. sordidus and R. similis. Expression of banana defence-related genes following endophyte inoculation and R. similis challenge varied greatly between the nematode-susceptible cv Nabusa and the nematode-tolerant cv Kayinja. In cv Nabusa, only the peroxidase (POX) and lectin genes were responsive to endophyte colonization of roots, or R. similis challenge. POX and lectin activities were significantly down-regulated 2 and 33 days after endophyte inoculation (dai), respectively. In cv Kayinja, endophyte colonization resulted in transient up-regulation of POX and a down-regulation of endochitinase (PR-3), lectin, pectin acetylesterase (PAE), phenylalanine ammonia-lyase (PAL) and PIR7A (peroxidase). Similar to systemic acquired resistance, PR-1 and catalase activities were up-regulated in the cv Kayinja 33 dai. Genes involved in signal transduction, cell wall strengthening, jasmonic acid pathway and defence molecule transport were differentially expressed in endophyte-inoculated plants. The expression profiles of four defence-related genes following endophyte inoculation and R. similis challenge were studied using quantitative real-time PCR. ABC transporter, ; -1,3-glucan synthase, coronatine insensitive 1 (COI1) and lipoxygenase (LOX) were up-regulated following endophyte inoculation. ; -1,3-glucan synthase and COI1 were highly up-regulated following R. similis challenge of endophyte-inoculated plants of the susceptible cv Nabusa, while COI1 and LOX were highly up-regulated following nematode challenge of endophyte-inoculated plants of the tolerant cv Kayinja. However ABC transporter gene activity was not up-regulated following nematode challenge of plants of both cultivars. UP-regulation of phenylpropanoid pathway enzymes PAL, POX and PPO has been observed in roots following colonization by both pathogenic and non-pathogenic fungi. In the current study, endophyte inoculation resulted in down-regulation of PAL activity in both a susceptible (cv Nabusa) and tolerant (cv Yangambi) banana. In cv Nabusa, endophyte inoculation primed PAL activity for up-regulation 30 days post nematode challenge (dpnc). However, in cv Yangambi PAL activity was up-regulated 7 dpnc irrespective of endophyte inoculation. Endophyte inoculation transiently up-regulated POX in cv Nabusa, but activity reduced to the levels in the controls 30 dai. Similar to PAL, R. similis challenge of endophyte-inoculated plants of Nabusa caused significant up-regulation of POX 7 dpnc. Nematode challenge of control plants of cv Yangambi resulted in a non-significant up-regulation of POX compared with non-challenged controls, but a significant up-regulation compared to all endophyte-inoculated plants. PPO activity was transiently up-regulated in cv Nabusa and down-regulated in cv Yangambi 7 dai. For all treatments, PPO activity was significantly reduced between 7 dai and 120 dai (60 dpnc). Fusarium oxysporum endophyte isolates Emb2.4o and V5w2 were successfully marked with benomyl- and chlorate resistance and transformed with fluorescent protein genes, while Eny1.31i, Eny7.11o and V4w5 were marked with benomyl resistance only. Most mutants and fluorescent protein transformants maintained resistance to the selective chemical on PDA and after plant colonization. Benomyl- and chlorate-resistant mutants were successfully used to determine actual plant colonization percentages by inoculated endophytes. Similarly, GFP transformants were successfully used to ascertain the pattern of endophytic root colonization in vivo. In plants dually inoculated with isolates Emb2.4o BR 8 and V5w2 CHR 9, both isolates were recovered from roots and rhizomes 4 weeks after inoculation, but isolate V5w2 CHR 9 proved a better colonizer of the two tissue types. Root colonization by isolate V5w2 CHR 9 was boosted when inoculated dually with Emb2.4o BR 8, while that by Emb2.4o BR 8 was reduced in the presence of V5w2 CHR 9. Where growth advantages were observed for dually inoculated plants, it occurred where plants were challenged with R. similis. In the absence of pests, control plants showed better growth than endophyte-inoculated plants. On the other hand, weevil challenge of control plants resulted in significant reductions in plant height, number of live roots and root fresh weight. Dual endophyte inoculation resulted in a significant reduction in R. similis populations in nematode only challenged plants, compared with plants inoculated with Emb2.4o BR 8 singly and control plants challenged with the nematode. In one replicate banana weevil damage to the outer and inner pseudostem base, and the inner rhizome were significantly reduced for dually-inoculated plants. Copyright.
Download or read book Biostimulants for climate smart and sustainable agriculture written by Mohamed Ait-El-Mokhtar and published by Frontiers Media SA. This book was released on 2024-04-15 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Control of Plant parasitic Nematodes written by and published by National Academies. This book was released on 1968 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies on the Characteristics of the Antagonistic Relationship Between Radopholus Similis Cobb Thorne and Mutualistic Endophytic Fungi in Nematode Suppressive Banana Plants Musa AAA written by Alexandra Zum Felde and published by . This book was released on 2008 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Role of Endophytes in Plant Health and Defense Against Pathogens written by Massimiliano Morelli and published by Frontiers Media SA. This book was released on 2020-10-29 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
Download or read book Endophytes and Secondary Metabolites written by Sumita Jha and published by Springer. This book was released on 2019-07-24 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reference work presents an authoritative review of endophytes and their applications to human welfare. Endophytes have become a class of interesting and curious microorganisms due to their intimate intra- and intercellular association with plants for competence, survival and reproduction. They can be bacteria or fungi, and they are usually non-pathogenic to their host. Endophytes have important applications in agriculture and industry, namely, they can help with plant growth, act as biocontrol agents and biosurfactant and secondary metabolite producers, and they are also rich sources of bioactive natural products. Novel and beneficial effects of endophytes are constantly emerging, and this book, divided into four sections, provides readers with the latest developments in this fast expanding field. In the first section, readers will discover the biology of the major groups of endophytes, followed by a summary of conventional and molecular tools for endophytes’ identification in Section II. The production of high-value metabolites by endophytes will be explored in the third section of this book, and in the final section, readers will find several case studies, examples and prospects for endophytes’ application in agriculture and industry. Written by leading international authors, this reference work will appeal to a wide readership, from students and researchers in the field of botany, biotechnology and agriculture to professionals interested in the production and applications of endophytic metabolites.
Download or read book Plant Parasitic Nematodes in Subtropical and Tropical Agriculture written by Michel Luc and published by Cabi. This book was released on 2005 with total page 871 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains 22 chapters, 2 appendices (of the nematicides and species mentioned throughout the book) and 24 colour plates covering all aspects of practical plant nematology in subtropical and tropical agriculture, including rice, cereals, sweet potatoes, root and tuber crops, food legumes, vegetables, groundnut, citrus, tree and fruit crops, coconut and other palms, coffee, cocoa, tea, bananas, sugarcane, tobacco, pineapple, cotton, other tropical fibres, spices and medicinal plants. It provides practical guidance on the methods of extracting, processing and diagnosing different plant and soil nematodes and on integrated nematode management. This book is intended for those studying and working in the area of crop protection.
Download or read book Fusarium Wilt of Banana written by Randy C. Ploetz and published by American Phytopathological Society. This book was released on 1990 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fusarium wilt of banana: some history and current status of the disease; Importante of fusarium wilt in different banana-growing regions; Taxonomy of fungi in the genus fusarium with emphasis on fusarium oxysporum; Genetic exchange within sexual and asexual populations of the genus fusarium; Molecular genetics of plant pathogenic fusarium oxysporum; Using karyotype variability to investigate the origins and relatednes of isolates of fusarium oxysporum f. sp. cubense; Population biology of fusarium oxysporum f. sp. cubense; Biological control of diseases caused by fusarium oxysporum; Influence of mineral nutrition on fusarium wilt: a proposed mechanism involving cell water relations; Host responses to the pathogen; Banana breeding and fusarium wilt; Breeding bananas and plantains for resistance to fusariu m wilt: the track record; Somaclonal resistance in cavendish banana to fusarium wilt; Baseline tissue and cell culture studies for use in banana improvement schemes.
Download or read book Biocontrol Agents of Phytonematodes written by Tarique Hassan Askary and published by CABI. This book was released on 2015-06-29 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: Highlighting the use of biocontrol agents as an alternative to chemical pesticides in the management of plant parasitic nematodes, this book reviews the current progress and developments in the field. Tactful and successful exploitation of each biocontrol agent, i.e. nematophagous fungi, parasitic bacteria, predaceous mites, rhizobacteria, mycorrhiza and predaceous nematodes, has been described separately. The contributors are 23 eminent nematologists and their information has been compiled in 19 chapters.
Download or read book General Concepts in Integrated Pest and Disease Management written by A. Ciancio and published by Springer Science & Business Media. This book was released on 2007-07-20 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: This, the first volume of the ‘Integrated Management of Plant Pests and Diseases’ book series, presents general concepts on integrated pest and disease management. Section one includes chapters on infection models, resurgence and replacement, plant disease epidemiology and effects of climate change in tropical environments. The second section includes remote sensing and information technology. Finally, the third section covers molecular aspects of the subject.
Download or read book Biofertilizers written by Inamuddin and published by John Wiley & Sons. This book was released on 2021-08-03 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt: Great attention has been paid to reduce the use of conventional chemical fertilizers harming living beings through food chain supplements from the soil environment. Therefore, it is necessary to develop alternative sustainable fertilizers to enhance soil sustainability and agriculture productivity. Biofertilizers are the substance that contains microorganisms (bacteria, algae, and fungi) living or latent cells that can enrich the soil quality with nitrogen, phosphorous, potassium, organic matter, etc. They are a cost-effective, biodegradable, and renewable source of plant nutrients/supplements to improve the soil-health properties. Biofertilizers emerge as an attractive alternative to chemical fertilizers, and as a promising cost-effective technology for eco-friendly agriculture and a sustainable environment that holds microorganisms which enhance the soil nutrients' solubility leading a raise in its fertility, stimulates crop growth and healthy food safety. This book provides in-depth knowledge about history and fundamentals to advances biofertilizers, including latest reviews, challenges, and future perspectives. It covers fabrication approaches, and various types of biofertilizers and their applications in agriculture, environment, forestry and industrial sectors. Also, organic farming, quality control, quality assurance, food safety and case-studies of biofertilizers are briefly discussed. Biofertilizers' physical properties, affecting factors, impact, and industry profiles in the market are well addressed. This book is an essential guide for farmers, agrochemists, environmental engineers, scientists, students, and faculty who would like to understand the science behind the sustainable fertilizers, soil chemistry and agroecology.
