Zoospores

A zoospore is a motile asexual spore that uses a flagellum for locomotion. Also called a swarm spore, these spores are created by some algae, bacteria and fungi to propagate themselves.

Flagella

There are two types of flagellated zoospores, tinsel or "decorated", and whiplash.

Tinsellated flagella have lateral filaments perpendicular to the main axis which allow for more surface area, and disturbance of the medium, giving it the property of a rudder, that is, the purpose of being used for steering.

  • Whiplash flagella are straight, to power the zoospore through its medium. There is also the 'default' zoospore, which only has the propelling, 'whiplash' flagella.
  • Both tinsel and whiplash flagella beat in a sinusoidal wave pattern, but when both are present, the tinsel will beat in the opposite direction of the whiplash, to give 2 axes of control of motility.
  • There can be many combinations for location of the flagella, such as posterior tinsel; posterior whiplash, anterior tinsel; and anterior whiplash.

Oomycetes and heterokont algae produce distinct bi-flagellated zoospores:

The phyla Chytridiomycota (Kingdom Fungi), Oomycota (Kingdom Chromista), and Hyphochytridiomycota within (Kingdom Chromista), produce zoospores with flagella in the same order as described above (e.g. Hyphochytridiomycota produces anterior whiplash and none else). These phyla number 1000+, 580 and 16 species respectively.

Zoosporangium

A zoosporangium is the sexual structure (sporangium) in which the zoospores develop in a plant, fungi, or protists (such as the Oomycota)

See also

Fungi portal

References

  • C.J. Alexopolous, Charles W. Mims, M. Blackwell et al., Introductory Mycology, 4th ed. (John Wiley and Sons, Hoboken NJ, 2004) ISBN 0-471-52229-5
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.