Grapevine Yellows

This work is to compile our current knowledge on GY phytoplasma biology at the genomic, transcriptomics, proteomics and metabolomics level, as well as to summarize the approaches for their detection.Phytoplasma are the most poorly characterized plant pathogenic bacteria from the Mollicutes class. In recent years new biostatistics and bioinformatics approaches have improved our understanding of their biology and interactions with host grapevines and a great improvement has been made toward their molecular detection, both in laboratories and on-site. They have a broad range of plant hosts among the monocots and dicots, and diseases of many important crops are associated with these pathogens. At least ten taxonomically unrelated phytoplasmas, one of them a quarantine pest in Europe, have been associated with grapevine yellows diseases (GY), which have great economic impact on viticulture worldwide.

As agricultural production increases to meet the demands of a growing world population, so has the pace of biotechnology research to combat plant disease. Diseases can be caused by a variety of complex plant pathogens including fungi, bacteria, viruses and nematodes, and their management requires the use of techniques in transgenic technology, biochemistry and genetics. While texts exist on specific pathogens or management practices, a comprehensive review is needed of recent developments in modern techniques and the understanding of how pathogens cause disease. This collection of studies discusses the key approaches to managing each group of pathogens within the context of recent developments in biotechnology. Broad themes include microbe-plant interactions, molecular diagnostics of plant pathogens and enhancing the resistance of plants.

Grapevine is a crop of major economical interest, and wine represents a multicultural heritage which has been growing since several milleniums. Yet, modern viticulture must face several challenges. Global climate has increased berry sugar content (and alcohol in the wine) whereas phenolic and aromatic ripeness are not always achieved. Water supply is becoming shorter. New varieties better adapted to new climatic conditions might have to be planted, which may affect wine typicity. Phytochemical treatments are more controlled, and the consumer pays increasing attention to environmentally safe practices. New methods reducing pesticide use, but maintaining yield and typicity, must be designed. The present book illustrates the recent progress made in ecophysiology, molecular and cell biology, and pathology of grapevine, as well as in precision viticulture and berry composition. Combination of these new tools with field observations will undoubtly make it easier to face the challenges described above. These multidisciplinary contributions will be of interest to anyone involved in grapevine and wine activities.

This volume focuses on integrated pest and disease management (IPM/IDM) and biocontrol of some key diseases of perennial and annual crops. It continues a series originated during a visit of prof. K. G. Mukerji to the CNR Plant Protection Institute in Bari (Italy), in November 2005. Both editors aim at a series of five volumes embracing, in a multi-disciplinary approach, advances and achievements in the practice of crop protection, for a wide range of plant parasites and pathogens. Two volumes of the series were already produced, dedicated to general concepts in IPM and to management and biocontrol of nematodes of grain crops and vegetables. This Volume deals, in particular, with diseases due to bacteria, phytoplasma and fungi. Every day, in any agroecosystem, farmers face problems related to plant diseases. Since the beginning of agriculture, indeed, and probably for a long time in the future, farmers will continue to do so. Every year, plant diseases cause severe losses in the global production of food and other agricultural commodities, worldwide. Plant diseases are not limited to episodic events occurring in single farms or crops, and should not be regarded as single independent cases, affecting only farms on a local scale. The impact of plant disease epidemics on food shortage ignited, in the last two centuries, deep cultural, social and demographic changes, affecting million human beings, through i. e. migration, death and hunger.

Phytoplasma-associated diseases are a major limiting factor in the context of the quality and productivity of many ornamental, horticultural and other economically important agricultural crops worldwide. Annual losses due to phytoplasma diseases vary, but under pathogen-favorable conditions they have disastrous consequences for the farming community. As there is no effective cure for these diseases, the management options focus on their exclusion, minimizing their spread by insect vectors and propagation materials and on the development of host plant resistance. This book discusses the latest information on the epidemiology and management of phytoplasma-associated diseases, providing a comprehensive, up-to-date overview of distribution, occurrence and identification of the phytoplasmas, recent diagnostics approaches, transmission, losses and geographical distribution as well as management aspects.

Diversity, Distribution, and Current Status is the first volume in a three-volume series dedicated to the analysis of this important group of plant pathogens across Asia with a particular focus on geographic distribution. This book offers updated data on the most prevalent phytoplasma diseases specific to each region. Phytoplasmas are emerging plant pathogens all around the world, causing significant economic losses to crops, as well as affecting international trade. The chapters in Volume 1 look closely at different countries and regions across Asia, providing data on country-wide distribution, phytoplasma groups, insect vectors and transmission. The Phytoplama Diseases in Asian Countries series will be an essential read for university students, researchers and agriculturalists interested in Plant Pathology. Volume 1 will be of particular interest to those needing the latest data on the distribution and transmission rates specific to the various regions of Asia. Reviews the geographical distribution of different phytoplasma diseases across Asia Organized by country, providing an in-depth analysis of the phytoplasma prevalent in different regions Provides a wealth of data associated with each phytoplasma disease Highlights the insect vectors transmitting the bacteria