Byssinosis leads to development of persistent symptoms and progressive decline in FEV1. Byssinosis Byssinosis, also called "brown lung disease" or "Monday fever", is an occupational lung disease caused by exposure to cotton dust in inadequately ventilated working environments. Byssinosis commonly occurs in workers who are employed in yarn and fabric manufacture industries. It is now thought that the cotton dust directly causes the disease and some believe that the causative agents are endotoxins that come from the cell walls of gram-negative bacteria that grow on the cotton. Although bacterial endotoxin is a likely cause, the absence of similar symptoms in workers
Citrus stubborn disease Citrus stubborn disease The Citrus stubborn disease is a plant disease affecting species in the genus "Citrus". "Spiroplasma citri", a Mollicute bacterium species, is the causative agent of the disease. It is present in the phloem of the affected plant and transmitted by several leafhoppers including "Circulifer tenellus" (beet leafhopper) and "Scaphytopius nitridus" in citrus-growing regions of California and Arizona and "Circulifer haematoceps" in the Mediterranean region. The host most notably affected is sweet orange but the bacterium can also infect weeds such as periwinkle ("Vinca rosea") and London rocket ("Sisymbrium irio"). Yellowed plants of Chinese cabbage and pak-choi ("Brassica