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Kingdom Fungi - Sac

Kingdom Fungi - Sac. BY: Shelby & Juran. Vocabulary. dikaryon - a cell with two haploid nuclei. haploid nuclei-  a nucleus with only half the normal actual number of chromosomes

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Kingdom Fungi - Sac

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  1. Kingdom Fungi - Sac BY: Shelby & Juran

  2. Vocabulary • dikaryon-a cell with two haploid nuclei. • haploid nuclei- a nucleus with only half the normal actual number of chromosomes • nuclear fussion- the process in which two or more atomic nuclei join together, or "fuse", to form a single heavier nucleus • Ascus-a sac-like structure produced by fungi • digestive enzymes-enzymes that break down  polymeric macromolecules into their smaller building blocks. 6.conidia- asexual unchangeable fungus spores

  3. Fungi • Members of “Ascomycota” • Reproduce Sexual reproduction Asexual reproduction • Produce spores in their ascus(seed bag) • Commonly cylinder-shaped large cell • Inside , there’re 8 ascospores • Both multicellular & unicellular • Have dissepiment-dividing membrane Characteristics of Sac Fungi

  4. Examples of Sac Fungi • Pezizavesiculosa • Morel • Body part : Fruiting bodies • Helvella

  5. Reproduction Sexual Step 1-compatible hyphae fuse together  Step 2- nuclei from the different hyphae move together into one cell to form a *dikaryon. Step 3- cell divisions occur, several cells with two different haploid nuclei per cell form. Step 4- *nuclear fusionof the two haploid nuclei occurs in the ascus mother cell.Step 5-the ascus mother cell develops into an *ascus Step 6-meiosis occurs in the diploid cells and, four or eight haploid ascospores form in the ascus

  6. ReproductionAsexual Asexual reproduction among the different groups of fungi are very similar. • Ascomycotareproduce asexually through budding or the formation of *conidia. conidia- asexual unchangeable fungus spores

  7. How they eat/ get food • Require organic molecules as energy sources. They get these by feeding on dead things. • To obtain these nutrients , sac fungi deposit powerful *digestive enzymes.  • They are heterotrophs

  8. Something cool Ergot (a type of sac fungi) has been known and used for many centuries, and it was even described in an Assyrian tablet as the "noxious pustule in the ear of grain." In ancient times ergot was also known as "mad grain" and "drunken rye." Then later in European history, there were periodic plagues, which had many symptoms, depending on the dosage of ergot. The possible effects were (mild to severe): (1) burning and convulsions, (2) hallucinations with imaginary sounds, (3) gangrene and loss of limbs, (4) permanent insanity, and, occasionally, (5) death. The initial burning sensation led to the Latin name ignissacer, which means holy fire. This human malady was so horrible that in 1093 a religious order was founded in southern France to help those afflicted; St. Anthony was the patron saint, so the malady, now called ergotism, was then named St. Anthony's fire.

  9. Thank you for watching

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