Biology 1290B Chapter Notes - Chapter 14: Tobacco Mosaic Virus, Adolf Mayer, Transmission Electron Microscopy
19 Jul 2017
School
Department
Course
Professor
Document Summary
Viruses" are a (cid:373)ajor dri(cid:448)i(cid:374)g for(cid:272)e for e(cid:448)olutio(cid:374) (cid:271)e(cid:272)ause ea(cid:272)h (cid:448)irus i(cid:374)fe(cid:272)tio(cid:374) has the potential to introduce new genetic information into any organism. The virosphere is i(cid:374)(cid:272)redi(cid:271)ly di(cid:448)erse a(cid:374)d (cid:272)a(cid:374) (cid:272)ause i(cid:373)pa(cid:272)t that"s (cid:373)ore har(cid:373)ful tha(cid:374) infections and diseases. Adolf mayer -> studied tobacco plants that were diseased by tmd (tobacco mosaic disease) He filtered the juice from the plants and transferred it to healthy plants: the plants were infected immediately. However, there were no bacterial cells found in the infected plants. Dimitri ivanowsky -> a pathologist: he reported that, 1. He ofte(cid:374) referred it to (cid:862)(cid:448)irus(cid:863) (cid:271)e(cid:272)ause it (cid:373)ea(cid:374)s (cid:862)poiso(cid:374)(cid:863) If phages were placed into a bacterial cell broth, the cells will disintegrate. It seemed like viruses were composed of mostly proteins and nucleic acid. They were able to stain the virus which lead to the study with transmission electron microscope possible (viruses cannot be seen through microscopes)
