Bøger af P. Narayanasamy

Investigations on various aspects of plant-pathogen interactions have the ultimate aim of providing information that may be useful for the development of effective crop disease management systems. Molecular techniques have accelerated the formulation of short- and long-term strategies of disease management. Exclusion and eradication of plant pathogens by rapid and precise detection and identification of microbial pathogens in symptomatic and asymptomatic plants and planting materials by employing molecular methods has been practiced extensively by quarantines and certification programs with a decisive advantage. Identification of sources of resistance genes, cloning and characterization of desired resistance genes and incorporation of resistance gene(s) into cultivars and transformation of plants with selected gene(s) have been successfully performed by applying appropriate molecular techniques. Induction of resistance in susceptible cultivars by using biotic and abiotic inducers of resistance is a practical proposition for several crops whose resistance levels could not be improved by breeding or transformation procedures. The risks of emergence of pathogen strains less sensitive or resistant to chemicals have been reduced appreciably by rapid identification of resistant strains and monitoring the occurrence of such strains in different geographical locations.

This work provides information on the detection, identification, and differentiation of all microbial plant pathogens - presenting modern protocols for rapid diagnosis of diseases based on biological, physical, chemical and molecular properties. It contains methods for the selection of disease-free seeds and vegetatively propagated planting materials and quarantine techniques for screening newly introduced plant materials.

Crop diseases are known to be caused by various abiotic and biotic agents. Among the biotic agents, microbial plant pathogens - fungi, bacteria, phytoplasmas, viruses and viroids - accounts for significant quantitative and qualitative losses in agricultural and horticultural crops. It is essential to have adequate knowledge of various aspects of these plant pathogens. Information on precise identification of microbial plant pathogens, process of disease development, epidemiology, assessment of losses due to diseases, principles of disease management, their applications for containing the diseases and the possible ways of integrating the practices is required to develop and enhance the effectiveness of disease management systems suitable for different ecosystems. Basic plant pathological methods provided in the appendix and glossary of plant pathological terms presented in this book will help the students to have a clear understanding of the subject. Graduating students, researchers and teachers desirous of updating the information on different aspects of microbial plant pathogens and the diseases caused by them, will find this book to be useful.

Identification of sources of resistance genes, cloning and characterization of desired resistance genes and incorporation of resistance gene(s) into cultivars and transformation of plants with selected gene(s) have been successfully performed by applying appropriate molecular techniques.

This volume reviews research on molecular biology of pathogens, infection process and disease resistance. Also included are strategies to incorporate disease resistance genes from diverse sources, and experimental protocols useful to students and researchers.

Offers an information on the detection, identification, and differentiation of various microbial plant pathogens. This work presents protocols for rapid diagnosis of diseases based on biological, physical, chemical and molecular properties. It contains methods for the selection of disease-free seeds and vegetatively propagated planting materials.

This book examines various mechanisms of biological activities of biotic and abiotic biocontrol agents, highlighting the similarities in their mechanisms and indicating the possibilities of selecting compatible ones.

This book examines various mechanisms of biological activities of biotic and abiotic biocontrol agents, highlighting the similarities in their mechanisms and indicating the possibilities of selecting compatible ones.

This volume is an exhaustive compendium of various methods of detecting fungal pathogens, and diagnosing the diseases caused by them. It is based on an extensive literature survey and is a valuable tool in selecting appropriate investigative techniques.

With nucleic acid-based techniques being the most efficient tool for detecting plant viruses, this text includes numerous protocols and distils the extensive literature in the field, offering a comprehensive resource for researchers in the biological sciences.

This volume presents essential information on the detection of bacterial and phytoplasmal plant pathogens and the diagnosis of the diseases caused by them. It includes a wide range of protocols that enable readers to choose methods for their investigations.

This volume reviews research on molecular biology of pathogens, infection process and disease resistance. Also included are strategies to incorporate disease resistance genes from diverse sources, and experimental protocols useful to students and researchers.

Identification of sources of resistance genes, cloning and characterization of desired resistance genes and incorporation of resistance gene(s) into cultivars and transformation of plants with selected gene(s) have been successfully performed by applying appropriate molecular techniques.

Studies on the phenomenon of plant pathogenesis (disease development) have been useful to have a deep insight into the interactions between host plant and the pathogen.