Rust (fungus) of the rust fungi "Cronartium ribicola", preventing the formation of basidiospores which infect the primary host. Although spores from white pines cannot infect other white pines, survival spores may overwinter on infected pines and reinfect "Ribes" spp. the following season. Infected tissue is removed from white pines and strict quarantines of "Ribes" spp. are maintained in high risk areas. "Puccinia graminis" is a macrocyclic heteroecious fungus that causes wheat stem rust disease. The repeating stage in this fungus occurs on wheat and not the alternate host, barberry. The repeating stage allows the disease to persist in wheat even though the
Causes of poverty all causes and effects of poverty. One of South Africa's major causes and effects of poverty is unemployment. Unemployment causes families to live in unsanitary conditions because a lack of financial means to improve living conditions. If the parents are unemployed, this can also affect how the child is brought up and what kind of education they receive. This issue has been recognized by the South African government and they have created organisations like the Expanded Public Works Program, also known as the EPWP. This program is an important gateway to labor absorption and provides income for poor families. Poverty