Essay On Pathogenisms Of Plants

In nature the plants are exposed to a large number of pathogenic organisms such as insects, fungi, bacteria and viruses. It is then surprising to note that, in spite of the tenure and the absence of an immune system, the death of plants by disease end up being an exceptional situation. This suggests that the defense mechanisms of plant cells, both those constituent as those induced by the presence of the pathogen, are very effective to stop or counter an infection. In addition, it has been verified that the plants are able to react to external stimuli, as can be the intensity of light, the amount of water or the presence of some substances in the surrounding area. Plants possess a linear pattern of conduct, according to which act directly before any stimulus. The aggression against the plant triggers a series of chemical reactions by which substances are released into the air. To do this, it is essential the presence of a series of components that the plant itself synthesizes, as is the case of proteins. In addition, they have had to suffer adaptations to abiotic stress and develop strategies working days for the defense and to cope with the attacks of both biotic type (insects, fungi, viruses), such as type of abiotic (water, heat, nitric oxide).
The plants are exposed to many different pathogens in the environment. However, only …show more content…
Some scientists have revealed the molecular components of the first line of defense. In their findings, they deduce parallels between the immune systems plants and animals.The diseases are common in plants, often produce a significant economic impact on the performance and quality, which tells us that disease management is an essential component in the production of most crops. In a general sense, there are three main reasons why the fungicides are used: To control the disease during the establishment and development of a