Download or read book Mycosphaerella Spp and Their Anamorphs Associated with Leaf Spot Diseases of Eucalyptus written by Pedro W. Crous and published by American Phytopathological Society. This book was released on 1998 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph covers 57 species of Mycosphaerella, including six new species. A discussion of disease assessment, provenance selection and general epidemiology is combined with an evaluation of the value of taxonomic features such as symptomatology, teleomorph and anamorph characters.Features of the book include symptom photographs and illustrations of Mycosphaerella spp. and their anamorphs that help with disease identification, and standardized methods that aid in studying species of Mycosphaerella spp.This comprehensive monograph will be an asset to mycologists, plant pathologists, forest pathologists, foresters, and extension agents in the field or laboratory, as a source of complete up-to-date research on Mycosphaerella spp. and their anamorphs.
Download or read book Mycosphaerella Species Causing Leaf Blotch on Eucalyptus Species in South Africa written by Gavin Craig Hunter and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies presented in this thesis, highlight the complexity and importance of Mycosphaerella leaf disease (MLD) on Eucalyptus spp., especially in South Africa. In Chapter I, a review of the literature dealing with Mycosphaerella and MLD of Eucalyptus spp. is presented. It is clear from this review that the disease is prevalent in most countries where Eucalyptus spp. are commercially grown, including Australia where they are native. The number of Mycosphaerella species known from Eucalyptus spp. is increasing and this suggests that their economic effect on commercial Eucalyptus forestry, will probably Increase. It will thus become important to effectively identifY species responsible for MLD. To do this, the existing complex taxonomy of this group of fungi, will undoubtedly prove to be an obstacle. However, DNA based identification methods are proving useful in identifying species and delimiting lineages within Mycosphaerella. Future commercial propagation of Eucalyptus spp. will need to seriously consider the use of hybrids resistant to infection by Mycosphaerella spp. Furthermore, there will be a serious need for effective quarantine measures to prevent the introduction of new, perhaps more pathogenic, Mycosphaerella spp. into areas where they do not already occur. Three species of Mycosphaerella, M. molleriana, M.M. nubilosa and M. juvenis have traditionally been regarded as the most important Mycosphaerella spp. in South Africa. At various times, each species has been considered to be the only pathogen causing MLD in the country. Results from Chapter 2 and Chapter 3 have shown that M. nubilosa is the main pathogen responsible for MLD, especially, on E. nitens in the KwaZulu-Natal province of South Africa. This is interesting as M. molleriana, which was originally thought to be the only species in South Africa, was not isolated. Moreover, the susceptibility of E. nitens to M. nubilosa appears to be high, resulting in severe defoliation. Considering that E. nitens is a popular species grown at higher altitudes of South Africa, the recognition of M. nubilosa is important. This fungus is well recognized in Australia as an important pathogen and comparisons of data from that country will be useful in the future. Several Mycosphaerella spp. have, in the past been found to occur within single stands of commercial Eucalyptus spp. As part of the research presented in Chapter 3, surveys conducted in South Africa showed that there are seven species of Mycosphaerella occurring in plantations. These include: M. ellipsoidea, M. irregulariramosa, M. juvenis, M. lateralis, M. marksii, M. nubilosa and one newly described species M. fori. All of these species, apart from M. fori, were previously known to occur in South Africa. It is interesting that M. juvenis, previously thought to be one of the main species causing MLD, was found only to occur in a low numbers. This suggests that species causing epidemics may change over time. The identification of M. fori from a previously well surveyed area was unexpected. This new species was dominant in Tzaneen and future surveys will be conducted to determine its distribution and host range within South Afiica. The identification of a new species also highlights the need for additional surveys in South Africa to identify new species and to recognize possible new introductions of exotic Mycosphaerella spp. The presence of M. ellipsoidea, M. irregulariramosa, M. lateralis and M. marksii in this survey was not unusual, as they were previously known in South Africa. However, they were found only to occur at low levels and, as such, do not seem to contribute significantly to outbreaks of MLD. Various taxonomic and DNA-based methods have been used for the identification of Mycosphaerella spp. However, some taxonomic characters are of little value at the species level. In Chapter 4, RFLP's were considered as an option to differentiate between species of Mycosphaerella on Eucalyptus. Results of this study showed that the restriction enzyme HaeIII may be used for RFLP identification of Mycosphaerella spp. From a total of twenty-one Mycosphaerella spp. tested, RFLP digestion with HaeIII could resolve six of these species to species level. However, other species formed groups that had similar restriction profiles. They could be further separated based on ascospore germination patterns. This study forms a foundation for future studies in which other enzymes may be used together with HaeIIi to elucidate groups of species. It is suggested though, that this technique be combined with existing methods such as ascospore germination patterns and anamorph associations to identify species of Mycosphaerella occurring on Eucalyptus spp. with confidence. This should negate the use of expensive sequencing techniques, which are currently necessary. In virtually every country where Eucalyptus is grown commercially, MLD is prevalent. However, the specific Mycosphaerella spp. in countries are generally not the same. In Chapter 5, I used DNA sequence data from the ITS region of the rDNA operon as well as morphological data to identify M. heimii from Brazil and Hawaii, U.S.A. This represents the first report of the species from these countries. M heimii was previously thought to occur only in Madagascar and Indonesia, where it is recognized as a primary pathogen of several Eucalyptus spp, including E. urophylla. This is one of the main Eucalyptusspp. in Brazil. It has thus been suggested that this species may have been introduced into these countries via infected seed lots. This highlights the need for effective quarantine measures within these and other South American countries to inhibit the further spread of this pathogen through South America. Copyright.
Download or read book Diseases and Pathogens of Eucalypts written by P. J. Keane and published by CSIRO PUBLISHING. This book was released on 2000 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive review of our current knowledge of the health and diseases of eucalypts.
Download or read book Cultivation and diseases of Proteaceae Leucadendron Leucospermum and Protea written by Pedro Willem Crous and published by . This book was released on 2013 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies on the Etiology of the Leaf Blotch Disease of Eucalyptus Spp Caused by Mycosphaerella Nubilosa Cke Hansf written by Alhagananthan Ganapathi and published by . This book was released on 1979 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mycosphaerella Leaf Spot Diseases of Bananas written by L. Jacome and published by Bioversity International. This book was released on 2003 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present proceedings offers an overview of the current situation regarding Mycosphaerella leaf spot diseases at the global level.
Download or read book A manual of diseases of eucalyptus in South East Asia written by Kenneth M. Old and published by CIFOR. This book was released on with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microbial Decontamination by Novel Technologies Mechanisms and Application Concepts written by Alexander Mathys and published by Frontiers Media SA. This book was released on 2019-09-26 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Highlights of the Didymellaceae written by Maikel Aveskamp and published by . This book was released on 2010 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Eucalyptus Spp written by William M. Ciesla and published by Bioversity International. This book was released on 1996 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mycosphaerella and Its Anamorphs written by Pedro W. Crous and published by . This book was released on 2003 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains a compilation of more than 3000 names that have been published or proposed in Cercospora, of which 659 are presently recognised in this genus, with a further 281 being referred to C. apii s.lat. Approximately 550 names of Passalora emend. (incl. Mycovellosiella, Phaeoramularia, Tandonella and Phaeoisariopsis p.p.) are treated in a second list. In total 5720 names are treated. 553 taxonomic novelties are proposed.
Download or read book Forest Microbiology written by Fred O. Asiegbu and published by Elsevier. This book was released on 2022-07-28 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forest Microbiology: Tree Diseases and Pests, Volume Three in the Forest Microbiology series, provides an overview of major disease agents of trees, including viruses, phytoplasma, bacteria, fungi, nematodes and major insect pests. With a strong emphasis on genetics, biochemistry, physiology, evolutionary biology and population dynamics of the organisms involved, this book provides a comprehensive understanding on the health of forests. Sections cover important pest threats such as bark beetles, emerald ash borer, coffee borers, leaf cutting ants, cocoa mirids, and more. This volume highlights a range of emerging diseases of forest trees in temperate and tropic regions as well as information on habitats. Forest trees play crucial roles not only for mitigating effects of the climate change but also for their considerable economic and ecological value. Forest trees are equally vital as an alternative bioenergy source and play important roles in pollution abatement and the maintenance of biodiversity. Timber and its associated products from forest trees contribute substantially to the revenue generation of many countries of the world. Includes case studies of complex diseases of economically important trees Highlights novel approaches to managing tree pests and diseases in a changing climate Focuses on the many functions of microbial disease agents of trees Addresses major insect pests of boreal, temperate and tropical trees
Download or read book Eucalyptus Plantations written by Run-Peng Wei and published by World Scientific. This book was released on 2003 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book contains papers presented at a meeting by eucalyptus experts, scholars, consultants and company managers from different countries and regions. The authors report: (1) the most recent advances in eucalyptus research from different perspectives OCo genetics, breeding, cultivation techniques, soil nutrition, plantation management, wood utilization, etc.; (2) the world-wide extension and development of the cultivated eucalyptus as a strategic forest tree with great economic, environmental and social significance; (3) plantation management merging ecological, environmental and legal concerns in operations practised by the private sector; (4) new approaches to utilization of eucalyptus woods. This book also represents a successful combination of academic research and practical operation in managing commercial eucalyptus plantations."
Download or read book Forest Pathology and Plant Health written by Matteo Garbelotto and published by MDPI. This book was released on 2018-04-13 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Forest Pathology and Plant Health" that was published in Forests
Download or read book Forest Pest and Disease Management in Latin America written by Sergio A. Estay and published by Springer Nature. This book was released on 2020-02-26 with total page 239 pages. Available in PDF, EPUB and Kindle. Book excerpt: By providing multiple economic goods and ecosystem services, Latin American forests play a key role in the environmental, social and economic welfare of the region’s countries. From the tropical forests of Central America to the Mediterranean and temperate vegetation of the southern cone, these forests face a myriad of phytosanitary problems that negatively impact on both conservation efforts and forest industry. This book brings together the perspectives of several Latin American researchers on pest and disease management. Each chapter provides modern views of the status and management alternatives to problems as serious as the impact of introduced exotic insects and diseases on Pinus and Eucalyptus plantations throughout the continent, and the emergence of novel insect outbreaks in tropical and temperate native forests associated with global warming. It is a valuable guide for researchers and practitioners working on forest health in Latin America and around the world.
Download or read book Handbook of Banana Production Postharvest Science Processing Technology and Nutrition written by Muhammad Siddiq and published by John Wiley & Sons. This book was released on 2020-09-15 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive guide that covers the banana’s full value chain – from production to consumption The banana is the world’s fourth major fruit crop. Offering a unique and in-depth overview of the fruit’s entire value chain, this important new handbook charts its progression from production through to harvest, postharvest, processing, and consumption. The most up-to-date data and best practices are drawn together to present guidelines on innovative storage, processing, and packaging technologies, while fresh approaches to quality management and the value-added utilization of banana byproducts are also explained. Additionally, the book examines the banana’s physiology, nutritional significance, and potential diseases and pests. The book also Edited by noted experts in the field of food science, this essential text: Provides a new examination of the world’s fourth major fruit crop Covers the fruit’s entire value chain Offers dedicated chapters on bioactive and phytochemical compounds found in bananas and the potential of processing byproducts Gives insight into bananas’ antioxidant content and other nutritional properties Identifies and explains present and possible effects of bioactive and phytochemical compounds Handbook of Banana Production, Postharvest Science, Processing Technology, and Nutrition offers the most far-reaching overview of the banana currently available. It will be of great benefit to food industry professionals specializing in fruit processing, packaging, and manufacturing banana-based products. The book is also an excellent resource for those studying or researching food technology, food science, food engineering, food packaging, applied nutrition, biotechnology, and more.
Download or read book Insects and Diseases of Mediterranean Forest Systems written by Timothy D. Paine and published by Springer. This book was released on 2016-01-06 with total page 888 pages. Available in PDF, EPUB and Kindle. Book excerpt: Insect and disease issues are often specific to the Mediterranean forest systems rather than shared with the temperate forests. In addition to the specific native insects and diseases, the forests are subject to the invasion of exotic species. The forests are also at risk from high degrees of human activity, including changing patterns of forest fires, land management activities, intensive plantation forestry using introduced timber species from other Mediterranean climate zones, and atmospheric deposition. Combined with elements of global climate change that may disproportionately affect Mediterranean climate systems, this creates a number of significant management issues that are unique to the Mediterranean forests. It is our goal that the information contained in this volume will contribute to understanding the unique aspects of Mediterranean forest systems and to protecting these critical resources.
