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Nature of Wilt Diseases of Plants
Nature of Wilt Diseases of Plants
This book features a review of wilt diseases and then develops a framework in which past, present, and future findings can be classified and correlated.
Item No. 40748
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The ultimate objective of this book is to advance the ongoing process of modeling vascular diseases of plants, especially Fusarium wilt of tomato. The book features a review of wilt diseases and then develops a framework in which past, present, and future findings can be classified and correlated.

The Nature of Wilt Diseases of Pests



The Production, Persistence, and Presentation of Inoculum

Growth and Reproduction in Moribund Tissues of the Host
The Persistence of Fusarium in the Soil
The Colonization of Root Surfaces
Suscept-Parasite Contacts--The Transition Between Persistence in the Soil and Extended Parasitic Growth
Disease Expression in Conducive Versus Suppressive Soils
Fusarium Crown and Root Rot--A Special Case
Modelling the Survival of Fusarium and Its Initial Contact with the Host

Defense Strategies of the Plant

Innate Structural Barriers
Recognition Phenomena
General Defense Responses

Determinative Phase I: Success or Failure of the Pathogen in Penetrating to the Vascular System of the Host

Determining Phase II: Success or Failure of the Pathogen in Colonizing the Vascular System

Modelling the Interaction Between Host and Parasite Within the Vascular System

Defining Parameters of the Model
Defining Components Within the Model

Defenses in the Lateral Direction
Defense in a Longitudinal Direction

A Perspective on Vascular Occlusion
The Activation of the Hormonal System of the Host
Vascular Gels and Gums and Vessel Coatings
Tyloses, Isodiametric Growth, and Increased Vascularization
The Synthesis of Stress Metabolites by the Host in Response to Infection

The Accumulation of Phenolics Following Infection and Their Relation to the Resistance Process
The Lignification and Suberization of Infected Tissues
Phytoalexins Produced in Response to Stress
Other Host Responses That Contribute to Defense

The Defense Strategies of the Plant
Colonization of the Vascular System by the Pathogen

Defining Pathogen Factors That Disrupt Host Defenses
Avoiding or Overcoming Recognition
Avoiding or Overcoming Callose Deposition
Avoiding or Overcoming Vascular Gelation
Avoiding or Overcoming Vascular Blockage by Tylose Occlusion or Vessel Crushing
Avoiding or Overcoming Stress Metabolites
The Suppression of Responses as Reflected in Respiration
Some Thoughts on the Suppressions of Responses

The Expressive Phase of the Disease

The Causes of Wilting--The Great Debate
The Evidence for Vascular Plugging and the Failure of the Water Supply
The Toxin Hypothesis in Relation to Symptom Expression
A Role for Toxins Produced by the Pathogen?

Genetic Variation in the Host and Pathogen

Resistance of Tomato to Fusarium oxysporum f. sp. lycopersici Race 1
Resistance of Tomato to Fusarium oxysporum f. sp. lycopersici Races 2 and 3 and to F.o. f.sp. radicis-lycopersici
Resistance of Tomato to Related Disease Organisms
Genetic Variation and Taxonomy of the Pathogens
Genetic Studies of Fusarium oxysporum
Classification and Nomenclature of Host and Pathogen in Terms of Their Interactions
The Cataloging and Mapping of Genes

Environmental Factors in Disease Development

Soil Moisture and Aeration
The Effect of Nutrients on Wilt Development

Calcium Nutrition and Soil pH
Nitrogen Nutrition

The Effect of Nonpathogenic Microflora on Disease Development
The Effect of Nematode Infections on Wilt Expression

Control Measures

Reducing Inoculum Load in the Soil
The Problem of Soil Reinfestation
The Control of Soil Reinfestation
The Use of Systemic Chemicals for Wilt Control
The Limitations of Chemical Control
The Use of Biological Control

The Selection, Development, and Maintenance of Suppressive Soils
Altering the Soil Nutrients
The Use of Resistant Cultivars
Building a Strategy for Control

A Look Toward the Future


Publish Date: 1987
Format: 5.5” × 8.5” hardcover
ISBN: 978-0-89054-074-9
Pages: 175
Images: 32 images
Publication Weight: 1 lbs

By C.H. Beckman

The Nature of Wilt Diseases of Pests

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