C4, C3 plants and aphids

Janice M. Glime jmglime at MTU.EDU
Sun Sep 27 12:31:03 EST 1998

I would like to hear the "real" answer to this one.  I can only guess that
perhaps they can tell anatomically since C4 plants have a thick bundle
sheath and even have a bundle sheath in dicots.  I would assume that would
mean that aphids with a stylet that can reach fluids of xylem or phloem
(depending on aphid species) in plants with no bundle sheath or with a
thinner one would be unable to reach into the ones with thicker ones, so
it would probably take a different species of aphid to penetrate the C4
plants.  Please let us know if you get a definitive answer. 
 Janice M. Glime, Professor  
 Department of Biological Sciences
 Michigan Technological University
 Houghton, MI 49931-1295
 jmglime at mtu.edu
 FAX 906-487-3167 

> I was wondering if any one could help me, I am an A level biology student
> and I have been set a question on how aphids can tell the difference between
> C4 and C3 plants and why they need to. I have looked everywhere with no
> avail.
> Any help would be really appreciated,
> Many Thanks,
> Jeremy Lightfoot

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