Table of Contents
What environmental factors can impact plant diseases?
Important environmental factors that may affect development of plant diseases and determine whether they become epiphytotic include temperature, relative humidity, soil moisture, soil pH, soil type, and soil fertility.
What are the effects of diseases on plants?
Systemically infecting pathogens can alter plant survivorship, reproduction, growth, competitive ability and susceptibility to herbivores. The effects can be positive as well as negative, and the net outcome of the interaction can range from strongly parasitic to unconditionally mutualistic.
What causes diseases in plants and animals?
Terrorist attacks against crops or livestock could be carried out with a variety of harmful agents, including viruses, bacteria, fungi, nematodes, and insect pests. Most serious plant diseases are caused by fungal pathogens, such as wheat smut, rice blast, brown stripe mildew of corn, and karnal bunt of wheat.
How does the environment affect plants?
In some cases, poor environmental conditions (e.g., too little water) damage a plant directly. In other cases, environmental stress weakens a plant and makes it more susceptible to disease or insect attack. Environmental factors that affect plant growth include light, temperature, water, humidity, and nutrition.
What are some examples of plant and animal diseases due to fungi?
These diseases include Anthracnose; Botrytis rots; Downy mildews; Fusarium rots; Powdery mildews; Rusts; Rhizoctonia rots; Sclerotinia rots; Sclerotium rots.
What is a plant disease and what are the causes?
Abstract. Infectious plant diseases are caused by living (biotic) agents, or pathogens. These pathogens can be spread from an infected plant or plant debris to a healthy plant. Microorganisms that cause plant diseases include nematodes, fungi, bacteria, and mycoplasmas.
What are the diseases caused by bacteria in plants and animals?
Search for these bacterial disease fact sheets on Ohioline.
- Fireblight of Apples, Crabapples and Pears.
- Bacterial Spot, Speck and Canker of Tomatoes.
- Bacterial Crown Gall of Ornamentals in the Landscape.
- Blackleg, Aerial Stem Rot and Tuber Soft Rot of Potato.
- Citrus Canker.
- Stewart’s Wilt of Corn.
How does disease affect wildlife?
Diseases in wildlife can influence reproduction, survival, fitness, and abundance of wildlife populations and can affect biodiversity within ecosystems and present an additional threat to many populations, especially those with limited abundance (i.e. threatened and endangered species).