Environment
Aphanomyces in a soil-borne disease, and the entire lifecycle is completed in the host root and surrounding soil. The pathogen A. euteiches does best in warm, wet soil conditions, but can survive at a range of moderate temperatures. Infection is most prevalent when host plants are in the seedling stage, and when temperatures are between 22-28 degrees Celsius. Because zoospores require water for mobility, standing water in the soil increases host infection by making it easier for zoospores to move to host cells. After infection, though, the development of symptoms is favored by warm and dry soil conditions.
Read more about this topic: Aphanomyces Euteiches F.sp. Pisi
Famous quotes containing the word environment:
“White males are the most responsible for the destruction of human life and environment on the planet today.”
—Robin Morgan (b. 1941)
“For those parents from lower-class and minority communities ... [who] have had minimal experience in negotiating dominant, external institutions or have had negative and hostile contact with social service agencies, their initial approaches to the school are often overwhelming and difficult. Not only does the school feel like an alien environment with incomprehensible norms and structures, but the families often do not feel entitled to make demands or force disagreements.”
—Sara Lawrence Lightfoot (20th century)
“In a land which is fully settled, most men must accept their local environment or try to change it by political means; only the exceptionally gifted or adventurous can leave to seek his fortune elsewhere. In America, on the other hand, to move on and make a fresh start somewhere else is still the normal reaction to dissatisfaction and failure.”
—W.H. (Wystan Hugh)