Lecture twenty-five 12 05 08

Lecture twenty-five 12 05 08 - Remove from nest X...

Info iconThis preview shows pages 1–19. Sign up to view the full content.

View Full Document Right Arrow Icon
Remove from nest X Termitomyces will not grow out-competed by other fungi
Background image of page 1

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

View Full DocumentRight Arrow Icon
Low pH High CO 2 Is not found growing outside of termite mounds Termitomyces is adapted to the environment found inside the nest Mutualism
Background image of page 2
Mycorrhizal fungi Mycorrhiza = fungus-root
Background image of page 3

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

View Full DocumentRight Arrow Icon
Fungi grow in and around the root Hyphae grow from the root into the soil Mycelium explores soil more efficiently than roots
Background image of page 4
Fungi grow in and around the root Mycelium explores soil more efficiently than roots 10X smaller diameter - enter smaller pores spaces More frequent branching Enhanced uptake of water and nutrients Hyphae grow from the root into the soil
Background image of page 5

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

View Full DocumentRight Arrow Icon
Plants colonized the land beginning 400 million years ago Mycorrhizal fungi appeared about the same time Required for plants to survive in dry soil
Background image of page 6
70% of all plants are mycorrhizal
Background image of page 7

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

View Full DocumentRight Arrow Icon
Cabbage family Plants that do not support mycorrhizae
Background image of page 8
Two types of mycorrhizae Endomycorrhizae (= AM) Ectomycorrhizae
Background image of page 9

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

View Full DocumentRight Arrow Icon
Endomycorrhizae (= AM) Grow inside of cells No visible effect on the root
Background image of page 10
Background image of page 11

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

View Full DocumentRight Arrow Icon
Mycorrhizal fungi consume up to 15% of photosynthate Endomycorrhizal fungi are obligate symbionts Absorbs nutrients from the plant
Background image of page 12
Endomycorrhizal spores No visible fruiting structures No mushrooms
Background image of page 13

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

View Full DocumentRight Arrow Icon
Plants grow faster with mycorrhizae Avocado +250% Citrus +1000% Mutualism = benefit to both plant and fungus Substitute for mycorrhizae
Background image of page 14
Ectomycorrhizal fungi
Background image of page 15

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

View Full DocumentRight Arrow Icon
Ectomycorrhizae Do not grow inside plant cells Root shape is altered
Background image of page 16
Ectomycorrhizae are found on some tree species Pines Oaks Eucalyptus
Background image of page 17

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

View Full DocumentRight Arrow Icon
Orchids Largest family of plants
Background image of page 18
Image of page 19
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 40

Lecture twenty-five 12 05 08 - Remove from nest X...

This preview shows document pages 1 - 19. Sign up to view the full document.

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