Incubation (disease)

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Incubation - incubation - the stage of disease development from the time of ending infection to the first symptoms. It is characteristic of infectious diseases caused by pathogens. At this stage of disease development, they gradually master the host tissue. Incubation of plant diseases Route of incubation

Plant diseases cause such pathogens as: phytoplasmas, viruses, viroids, bacteria, protozoa, chromate and fungi. Phytoplasma develops in the tubes of the sieves and they also spread in them. Viruses and viruses are spread by plasmodesms and conductive beams. Bacteria spread in parenchyma and conductive tissues. Mushrooms develop mainly in intercellular spaces and inside cells, sometimes also on the surface of plants. On the surface of plants, the etiological signs produced by the mycelium (eg fruiting bodies and conidia) are produced.

Bacteria and fungi spread faster to the top of the plant, while the viruses spread faster downwards. Duration of incubation

It depends on the species of pathogen, host species and its susceptibility to a given pathogen, and on the environmental conditions, especially temperature. For viruses, it ranges from a few days to several weeks, for mushrooms from several days to several months. The incubation period and susceptibility to pathogens also depend on the age of the plant. Young plants are more susceptible to viral diseases than old plants, whereas in the case of fungi, plants of older and older parts of plants are often more susceptible. Asymptomatic paralysis

It is also called latent or latent infestation. It consists in the absence of disease symptoms, despite the infection of the body. It occurs when the pathogen is not very aggressive, the host is highly resistant to a given pathogen, or environmental factors are not conducive to the pathogen. However, when factors limiting the development of the pathogen change, for example, environment factors change for the environment, or the susceptibility of the plant is increased (e.g. by maturation or weakness by other pathogens), the dormant pathogen is activated. For example, symptoms of fusariosis caused by Fusarium oxysporum usually appear only in the second half of June. The plant has been infected by this pathogen much earlier, but it is thermophilic and low temperatures do not allow its development and it was stuck in the plant in dormancy. he plant in dormancy.

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