Table of Contents
How can we detect diseases in plants?
Diseased plants can be identified by abnormal growth or by signs of the disease-causing organism, such as bacterial slime (an external sign of a disease called bacterial wet wood) or insect larvae which hatches from eggs and feeds on leaves.
What type of antibodies can be used in testing kits to detect plant diseases?
Use of monoclonal antibodies Samples of the plant tissue can be tested with the monoclonal antibody. If the pathogen’s antigens are present in the plant tissue then the monoclonal antibody sticks to it.
What are the three types of plant diseases?
Common Plant Diseases
- Black Spot.
- Other Leaf Spots.
- Powdery Mildew.
- Downy Mildew.
- Blight.
- Canker.
How are plant viruses detected?
The most widely used techniques for screening the propagation materials, seeds and other plant samples for the specific virus infection or its latent presence include electron microscopy and immunological detection like ELISA, PCR and microarray.
How are plant viruses diagnosed?
Diagnosis of Plant Virus Diseases
- Pathogenicity – Bioassays using indicator plants.
- Transmissibility – Vector transmission assays.
- Architecture of virus particles – Electron microscopy.
- Presence of virus-specific structures in infected cells – Electron microscopy.
How do plants detect pathogens?
With the primary immune system, plants recognize microbe-associated molecular patterns (MAMPs) of potential pathogens through pattern recognition receptors (PRRs) that mediate a basal defense response. Plant pathogens suppress this basal defense response by means of effectors that enable them to cause disease.
How are monoclonal antibodies used to detect pathogens?
Using monoclonal antibodies In the simplest test monoclonal antibodies to a known pathogen are added to a sample of an unknown pathogen. If the antibodies attach to antigens and make cells clump together, then the unknown pathogen is identified as the monoclonal antibody pathogen.
What are the classification of plant diseases?
According to this criterion, plant diseases are classified into two types: infectious (biotic) diseases, which are caused by eukaryotes, prokaryotes, parasitic higher plants, viruses/viroids, nematodes, and protozoa, and noninfectious (abiotic) diseases, which are caused by different extreme environmental conditions [5 …
What is plant disease cycle?
Plant disease cycles represent pathogen biology as a series of interconnected stages of development including dormancy, reproduction, dispersal, and pathogenesis. The progression through these stages is determined by a continuous sequence of interactions among host, pathogen, and environment.
What is genetic material in plant virus?
Some of the plant viruses have genomes that are composed of single-stranded (ss) DNA. However, the majority of plant viruses do not use DNA at all. Instead, the genomes of nearly all plant viruses are made of RNA.