Stomata and UV-B
ajt at rri.sari.ac.uk
Thu Jan 13 08:15:06 EST 1994
P Aphalo (pedro at uk.ac.ed.castle) wrote:
: A. J. Travis' message says that a "list about stomata" is being
: cross-posted to this group. What is the e-mail address of this
: list? (I guess that messages from the list on stomata are fed into
: bionet.plants, but not the other way around... 8-)
stomata at mit.edu is the list address *NOT* the subscription address.
Ellen Kearns (kearns at mit.edu) is the 'owner' of the list and I've asked
her to post stomata articles here on a one-way basis (as with BEN).
I welcome such one-way email traffic generally, but greater minds than
mine will tell you that two-way exchanges cause problems that BIOSCI
was set up to resolve. My interest is in bringing plant biologists
together in a common electronic forum and, to that extent, I think
importing other lists is useful.
: I am writing a research plan for a grant application. My idea is that
: the effect of UV-B on the photosystems on which direct responses of
: stomata to light depend is very poorly known. Are there any recent, or
: not so recent, references or ongoin research on this subject? Do you
: think this is a worthwhile area of research?
I published something on (visible) blue-light responses ages ago
asserting that, whilst there was no direct evidence for the mechanism,
sufficient blue-light quanta are intercepted by a guard cell to account
for 100 times the ion-flux across the cell membrane. We postulated
that a membrane-bound blue-light photoreceptor and electron-transport
chain _could_ represent a direct response to blue light (rather than a
Subsequent work by Eduardo Zeiger and others may have demonstrated
Travis, A.J. and Mansfield, T.A. (1981), Light saturation of stomatal
opening on the adaxial and abaxial epidermis of Commelina
communis, Journal of Experimental Botany, 32, 1169-1179.
I mentioned this in a thread about blue-light responses last year.
Dr. A.J.Travis, | JANET: <ajt at uk.ac.sari.rri>
Rowett Research Institute, | other: <ajt at rri.sari.ac.uk>
Greenburn Road, Bucksburn, | phone: +44 (0)224 712751
Aberdeen, AB2 9SB. UK. | fax: +44 (0)224 715349
More information about the Plantbio