Author: GOVINDAPPA M. RPublisher:
ISBN:
Category :
Languages : en
Pages : 155
Book Description
Detection and Transmission of Tomato Leaf Curl Virus and Interaction Studies with Host Plants and Whitefly Bemisia Tabaci Genn., in Relation to Epidemics
Author: GOVINDAPPA M. RTomato Yellow Leaf Curl Virus Disease
Author: Henryk CzosnekPublisher: Springer Science & Business Media
ISBN: 140204769X
Category : Science
Languages : en
Pages : 437
Book Description
Ideally suited to horticulturalists and plant virologists, this highly useful text offers a multidisciplinary view on one of the major diseases of tomato crops, the tomato yellow leaf curl disease. It deals with epidemiological aspects of the disease as well as integrated pest management in the field. Coverage discusses the efforts aimed at breeding tomato plants resistant to the virus by classical breeding, by marker-assisted breeding and by genetic engineering.
A Century of Plant Virology in India
Author: Bikash MandalPublisher: Springer
ISBN: 9811056722
Category : Science
Languages : en
Pages : 800
Book Description
The book is a compilation of research work carried out on plant viruses during past 100 years in India. Plant viruses are important constraints in Indian agriculture. Tropical and sub-tropical environments and intensive crop cultivation practices ideally favours perpetuation of numerous plant viruses and their vectors in India, which often cause wide spread crop losses. Of all the plant pathogens, studies of plant viruses have received a special attention as they are difficult to manage. A large body of literature has been published on the plant virus research from India during past 100 years; however the information is so far not available in one place. This book provides comprehensive information on the biology, molecular biology, epidemics, crop losses, diagnosis and management of viruses and viroids occurring in India. Description of properties of the viruses are provided in the chapters comprising of different genera such as Allexivirus, Begomovirus, Babuvirus, Badnavirus, Carlavirus, Carmovirus, Cucumovirus, Closterovirus, Ilavirus, Mandrivirus, Potyvirus, Tospovirus, Tungrovirus and Sobemovirus. Virus-vector research related to aphid, thrips and whitefly is discussed. The work on the management aspects of plant viral diseases has been described with reference to the conventional, antiviral and transgenic approaches. Further, the quarantine mechanism developed in India for the exclusion of viruses and vectors has also been included. The book also provides useful information about the capacity building on the research and education on Plant Virology in India. Overall, the book covers a wide range of accounts of research findings and innovations in Plant Virology in India during past 100 years. The book will be a resourceful reference to the students, scientists, agricultural professionals and policy makers.
Interactions of Whitefly Bemisia Tabaci with a Begomovirus and Its Host Plant, Solanum Lycopersicum
Author: Wendy Gay MarchantPublisher:
ISBN:
Category :
Languages : en
Pages : 408
Book Description
Tomato yellow leaf curl virus (TYLCV) is a Begomovirus that causes severe symptoms in tomatoes such as curling of the leaves, chlorosis, stunted growth, and yield losses. The vector is Bemisia tabaci, which transmits the virus in a persistant and circulative manner. TYLCV arrived in Florida in the mid 1990's and has spread northward into Georgia, South Carolina, and Alabama. TYLCV's overwintering mechanism is currently unknown, so transovarial and sexual transmission in the whitefly were tested for using PCR and plant transmission experiments, as these modes of transmission could indicate TYLCV overwinters in the whitefly. Transovarial and sexual transmission of TYLCV was found, but the insects were not infectious to plants. TYLCV-resistant tomato cultivars are currently the best method to control for yield losses due to the virus. However, in other pathosystems, viruses have broken resistance in their respective crops. TYLCV genomes isolated from resistant and susceptible cultivars were compared to investigate for this threat. There were not any apparent differences between the genomes, indicating that TYLCV-resistant tomatoes can continue to be of use. Also, many studies have examined the phylogeny and introductions of TYLCV into new geographic regions, but a population genetics approach on a world-wide scale has not been conducted. Hundreds of TYLCV genomes available on GenBank, and from Florida and Georgia, were amassed to test for recombination, polymorphisms, population neutrality, gene flow and genetic differentiation, selection, and phylogeny. The Middle East was confirmed to be the likely origin of TYLCV and showed the highest diversity. In general, the TYLCV species is highly variable and is spreading most rapidly in Southeast Asia. Mixed infections of different Begomovirus species have been reported in many different plants. However, few studies have examined mixed infections of different virus isolates from the same species. Mixed TYLCV infections were sought for in tomatoes from the field. A greenhouse experiment was conducted to assess the competitiveness of two different TYLCV isolates. Lastly, tomato genotypes with acylsugar-exuding trichomes were assessed for whitefly resistance. These genotypes showed xenobiosis and antibiosis toward the whitefly, but were still susceptible to TYLCV inoculation by whiteflies.
Advances in Disease Vector Research
Author: Kerry F. HarrisPublisher:
ISBN: 9783540974789
Category : Animals as carriers of disease
Languages : en
Pages : 240
Book Description
Spread of Tomato Leaf Curl Virus and B- Biotype Whitefly, Bemisia Tabaci Genn. and the Associated Physiological Disorders in Tomato
Author: NAVEEN L. RPlant Virus and Viroid Diseases in the Tropics
Author: K. Subramanya SastryPublisher: Springer Science & Business Media
ISBN: 9400778201
Category : Science
Languages : en
Pages : 511
Book Description
Around the globe, besides fungal and bacterial diseases, both virus and viroid diseases have acquired greater importance in the realm of plant pathology and call for effective management measures as they are responsible for heavy yield losses and are a matter of vital importance and concern to farmers, horticulturists, gardeners and foresters. Understanding disease epidemiology is of vital importance for formulating viable disease management practices in a given agro-ecosystem. The development and progress of plant disease epidemics are variable from region to region. Epidemiology is not a static process, but rather a dynamic course that varies with a change in the ecology, host, vector and virus systems.
Transmission and Molecular Detection of Tomato-infecting Geminiviruses Vectored by the Sweetpotato Whitefly Bemisia Tabaci (Homoptera
Author: Prem MehtaEpidemiology of Tomato Yellow Leaf Curl Virus in Relation to the Population Density of Its Whitefly Vector. Bemisia Tabaci (gennadius)
Author: N. IoannouPublisher:
ISBN:
Category : Sweetpotato whitefly
Languages : en
Pages : 8
Book Description
Virus Diseases of Tropical and Subtropical Crops
Author: Paula TennantPublisher: CABI
ISBN: 1780644264
Category : Science
Languages : en
Pages : 265
Book Description
This book describes interactions of plant viruses with hosts and transmission vectors in an agricultural context. Starting with an overview of virus biology, economics and management, chapters then address economically significant plant diseases of tropical and subtropical crops. For each disease, symptoms, distribution, economic impact, causative virus, taxonomy, host range, transmission, diagnostic methods and management strategies are discussed.