21 - Archaea II - Crenarchaeota

21 - Archaea II - Crenarchaeota - Topic 21 Archaea II:...

Info iconThis preview shows pages 1–10. Sign up to view the full content.

View Full Document Right Arrow Icon
Topic 21 Archaea II: Crenarchaeota
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Phylogeny of Archaea Figure 19.1
Background image of page 2
Crenarchaeota Most current information based on genome sequence data DNA found worldwide, including polar waters Most appear to metabolize sulfur Most cultured Crenarchaeota are hyperthermophiles obligate anaerobes may be chemoorganotrophs or chemolithotrophs
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Habitats of Crenarchaeota Sponge symbionts Black smoker Oceans
Background image of page 4
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Diversity of Crenarchaeota * *
Background image of page 6
Sulfolobus Thermoacidophile 70-80 o C pH 2-3 volcanic habitats, hot springs Aerobic Fixes CO 2 (autotrophic) Oxidizes S 0 , H 2 S to H 2 SO 4 reduces pH of own environment may also oxidize Fe 2+ to Fe 3+ chemolithoautotrophic Often grows on sulfur crystals Sulfolobus acidocaldarius Figure 19.17 Also chemoorgano- heterotrophic!
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Figure 19.16 Acidic Sulfolobus habitats Sulfur-rich hot spring Iron-rich geothermal spring Fe 2+ è Fe 3+ (and acid)
Background image of page 8
Nanoarchaeum equitans discovered in hydrothermal vent north of Iceland Obligate parasite of the crenarchaeote, Igniococcus 0.4 Ж m (1% of the volume of
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 10
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 23

21 - Archaea II - Crenarchaeota - Topic 21 Archaea II:...

This preview shows document pages 1 - 10. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online