Talk:Plasmodesma

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This article was the subject of a Wiki Education Foundation-supported course assignment, between 20 March 2019 and 30 April 2019. Further details are available on the course page. Student editor(s): Reillyboule, Kp06geor.

Above undated message substituted from Template:Dashboard.wikiedu.org assignment by PrimeBOT (talk) 02:25, 18 January 2022 (UTC)

Wiki Education Foundation-supported course assignment
This article is or was the subject of a Wiki Education Foundation-supported course assignment. Further details are available on the course page. Student editor(s): Melissaj11.

Above undated message substituted from Template:Dashboard.wikiedu.org assignment by PrimeBOT (talk) 06:45, 17 January 2022 (UTC)

Algae
I've made a few changes to make it clearer that algae have pdesma too. Other parts of the article need changing now though - e.g. refs to plant cells. Any ideas what the best way would be? Smartse (talk) 23:45, 16 April 2009 (UTC)

Number of plasmodesmata
The article stated that a "typical plant cell may have between 103 and 105 plasmodesmata connecting it with adjacent cells[9] equating to between 1 and 10 per mm2". I changed that to "...1 and 10 per µm2" since plant cells are not large enough to have even one of these junctions if we are talking about square millimeters.

Math: Assume a cubic plant cell size of 0.1 mm per side. This gives a total surface area of .06 mm2 for the typical plant cell, not enough area for 1000-100000 plasmodesmata at a rate of 10 per mm2.

I don't have the source books, but I am *guessing* this was just a typo, so I did a calculation to see if µ works, and it does: radius of plasmodesma (later in same paragraph): 30 nm = 0.03 µm; π*(0.03 µm)2 = 0.0028 µm2 for each junction; 0.0028 µm2 * 105 junctions = 283 µm2. The surface area of a typical plant cell would be about 60,000 µm2, which would easily accomodate 300 plasmodesmata.

Someone with either of the referenced texts should check on this. Redhookesb (talk) 05:49, 24 December 2009 (UTC)


 * Thanks for that. I think you are right about the typo, I think I added the section, I don't have the book to hand at the minute but will check when I can. Smartse (talk) 11:31, 24 December 2009 (UTC)
 * The error was present in the cited source, but we still need a wp:RS source for the correction, not wp:OR. LeadSongDog come howl!  21:14, 26 April 2016 (UTC)