Causes of Pain in Plants

How do pathogens cause the plants to be sick? 
1. Weaken the host with the way food is absorbed continuously from the cell to its needs. 
2. Stop or disrupt the metabolism of host cells with toxin, enzyme, or a secreted ZPT 
3. Inhibit the transport of food, mineral nutrients and water through the carrier network.
4. Consuming content of host cells after contact.


Disease progression? 
Plant diseases which existed since time immemorial since emerged plants on earth. There is fossil evidence of leaf spot. Some events cause plant diseases fatal to humans who: 
1. Year 1000 in Europe. Famous Holy Fire (Holy Fire) or the fire of St. Anthony 
2. In 1844 in the U.S.. Potato late blight by Phytopthora infestans 
3. Years 1845-1860 in Ireland. Because the potato famine devastated, SHG 1 / 8 pddk died. 
4. Years 1945-1948 in Bangladesh. Famine because of paddy destroyed by Helminthosporium oryzae. 
5. Year 1880 in Indonesia. Coffee leaf rust devastated by Hemelia vastatrik. 
6. 1950 in Tawangmangu. Oranges were destroyed because CVPD 


Why plant diseases are always evolving?
 This is because agricultural technology ever developed for example: 
1. Excessive use of artificial fertilizers 
2. Planting cultivars that produce high but vulnerable to disease
3. Planting a cultivar in a broad area 
4. Importation of new plants from other regions. 


Why plant disease causing harm? 
1. Losses Directly 
Ie losses due to disease reduces the quantity and quality, increase production costs, reducing the ability of farming. 
2. Indirectly loss 
That loss to society because consumers must pay high fees.

Posted in: Disease,Pathogens,Plants,Sick