4.05.06 L70 - April 5, 2006 Lecture 70: Fungi FUN FUNGAL...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
April 5, 2006 Lecture 70: Fungi  F UN  F UNGAL  F ACTOIDS : Armillaria Ostoyae – the honey mushroom is the larest organism in the world! M AIN  T ROPIC  S TRUCTURE Hyphae – normally they are underground, but then they coalesce and grow up to form  fruiting body (mushroom cap) Underground [internal] dining o Cell wall in the hyphae is made of chitin (polysacc analogous to cellulose) o They do not have cell walls between cells, so they are multi-nucleated (aka  coenocytic ) o The build septum with pores to separate the nuclei and cytoplasm in to cells.  o Produce exozymes te eat (heterotrophic). o Theoy are saprobes—they eat dead matter. Above ground—fruiting bodies. L IFE  C YCLES Waay more complex Instead of fusing at fertilization, the nuclei remain separate and continue to undergo  mitosis They are dikaryotic [N+N].  They then fuse (fertilization, karyogamy).to form a zygote Which undergoes meiosis to produce spores. 
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/11/2008 for the course BIO G 101 taught by Professor Gilbert,c. during the Fall '07 term at Cornell University (Engineering School).

Page1 / 3

4.05.06 L70 - April 5, 2006 Lecture 70: Fungi FUN FUNGAL...

This preview shows document pages 1 - 2. Sign up to view the full document.

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