Pythium oligandrum: Difference between revisions
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==References== | ==References== | ||
1. "Review report for the active substance Pythium oligandrum M1." EUROPEAN COMMISSION HEALTH & CONSUMERS DIRECTORATE-GENERAL. Web. <http://ec.europa.eu/food/plant/protection/evaluation/existactive/M1.pdf>. | |||
==Author== | ==Author== | ||
Revision as of 01:51, 23 April 2011
Classification
Kingdom: Chromalveolata
Phylum: Heterokontophyta
Class: Oomycetes
Order: Pythiales
Family: Pythiaceae
Species
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NCBI: Pythium oligandrum [1] |
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Description and Significance
Describe the appearance, habitat, etc. of the organism, and why you think it is important.
Genome Structure
Describe the size and content of the genome. How many chromosomes? Circular or linear? Other interesting features? What is known about its sequence?
Cell Structure, Metabolism and Life Cycle
Interesting features of cell structure; how it gains energy; what important molecules it produces.
Pythium oligandrum has two distinctive life cycles. One of which is asexual and the other is sexual. In the asexual lifecycle, P. oligandrum exists as a zoospore. A zoospore is a flagellated cell containing genetic material. The zoospore of P. oligandrum is diploid and contains the full genome. In the case of P. oligandrum, the zoospore is an important life stage because of the zoospores ability to move through water via its flagella. When conditions are suitable, the zoospore undergoes mitotic divisions and matures. Pythium oligandrum exists in its sexual life stage about 20% of the time. This life cycle is characterized by thick walled oospores. Oospores are a result of the fertilization of oogonium by antheridium, which is the male sex organ of the organism. The maturation of the oospores leads to the production of mycelium and a mature organism capable or reproduction and completing the cycle. Oospores are characterized by their thick cell walls and are relatively large cells.
Ecology and Pathogenesis
Habitat; symbiosis; biogeochemical significance; contributions to environment.
If relevant, how does this organism cause disease? Human, animal, plant hosts? Virulence factors, as well as patient symptoms.
References
1. "Review report for the active substance Pythium oligandrum M1." EUROPEAN COMMISSION HEALTH & CONSUMERS DIRECTORATE-GENERAL. Web. <http://ec.europa.eu/food/plant/protection/evaluation/existactive/M1.pdf>.
Author
Page authored by _____, student of Prof. Jay Lennon at Michigan State University.
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