Kingdom

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Kingdom Stramenopila
Mycology ( 4032605) Lecture
3 ??? ???????????????? ?????? ????
404552016???????????? ??????? ????
404552029
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Kingdom Stramenopila

• ????????????????????

• ???????????????? stramenopiles

• ?????????????????, ?????????,
• ?????????????????????????????????

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- Hyphochytriomycota - Labyrinthulomycota
- Oomycota
????????????????????????????????
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Stramenopiles

• ??????????? D.J.Patterson ?? 1989
• ??????????????????????
• - ?????????????????????? 2 ???? ??????????? 3
  ????
• - ????? zoospore ??????????????????
• filamentous ???????????????????????
  stramenopiles
• ????????????????????????????????

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Convergent Evolution

• ????????????????????????????
  ???????? ????????????
  ?????? ?????????????????????????????

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Eukaryotes--From Tree of Life Project
http//tolweb.org/tree?groupEukaryotescontgroup
Life
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Stramenopiles Mitchell L Sogin andDavid J.
Patterson
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Pylum Hyphochytriomycota

• ???????????, ???????????????????????????
• ?????????????????????????????????????
• - Hyperparasites ??? Oomycota oospores
  ??????????? AM ?????
• ??????????????????? Oomycota

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Characters

• ????????????????????????????????????
• ??????????????????????????
• - ?? Holocarpic 1 ??????????
• ?? Zoospores 1 ???????????????
• ????????????????????
• ?????????? 2 family, 6 genus, 23 species

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Thallus types in hyphochytrids
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Hyphochytrium catenoides
Eucarpic, polycentric thallus photo by D. J.
S. Barr
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Phylum Labyrinthulomycota

• ???????????????????
• ??????????????????????
• - ???????????????? , ????????? ??????????
• - Labrinthula zosterae ?????????? ?????????????

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Characteristics

• Ectoplasmic ??????????? ???? ???
• ???????
• ????????????????
• ??????????? 2 ??? ????????????
• ?????????????

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Classification

• 2 families
• - Labyrinthulaceae
• - ????????????????????????????????
  ????????????????
• - Zoospores??eyespote
• - Thraustochytriaceae
• - ????????????????????
• - Zoospores ?? eycspots

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Ectoplasmic net formed from bothrosomes trophic
cells have a single layer of golgi-derived scales
Trophic cells surrounded by ectoplasmic net
Labyrinthula zoospores contain a dark eyespot,
but lack surface scales
Zoospores lack an eyespot and are surrounded by a
single layer of scales
Thraustochytrium thallus wall composed of layered
scales formed by golgi apparatus
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Eelgrass (Zostera marina)

• Eelgrass ?????????????????????????????????
• ?????????????????????????????????
• ??????????????
• ??????????????????????

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Wasting Disease of Eelgrass

• ???????????????????????????? 1930
• ?????????????????????????????????????
  ????? 40 ??
• ??????????????????????????
• ????????????????????????? 1980
• Labyrinthula zosterae

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Labyrinthula
Ectoplasmic net
http//www.botany.uga.edu/zoosporicfungi/labyrint.
htm
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Labyrinthula trophic cells
bothrosome
http//www.arches.uga.edu/charla/labies.html
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Thraustochytrids

• Ectoplasmic ????????????? Schizochytrium
  ????????????????????
• Schizochytrium ??? Thraustochytrium
  ?????????????? omega-3-fatty acids