Prokaryotes and Viruses

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Prokaryotes and Viruses Chapter 13: part 2 Prokaryotes and Viruses

2nd major group of Photosynthetic Bacteria Purple and Green Bacteria Have Unique types of Photosynthesis Purple or green sulfur bacteria- -Carbon dioxide + Hydrogen sulfide in the presence of light forms carbohydrate + water and sulfur p247. Cyanobacteria- -Carbon dioxide+ water in the presence of light form carbohydrates+ water and oxygen

Spiroplasmas- motile bacteria that cause stubborn disease

Mycoplasmalike Organisms- slow weakening

Mycoplasmiclike organism devestated a grove of Coconut palms

Bacterial effects on Plants

Halophiles- salt loving Archaea

Methane producing archae

Extreme thermophiles- archaea YNP HS rich

General life cycle of a virus Two stages 1. Replication inside host 2. Spread to new host

Tobacco Mosaic Virus

Wound tumor virus Tumor produced in sweet clover

Electron Microscope Tumor virus particles

Streaked flowers of Rembrant tulips Viral infection eventually weakens plant

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