Login

Join for Free!
119225 members


Guard cells

Plants!

Moderator: BioTeam

Guard cells

Postby TheVirus » Mon Nov 08, 2010 8:40 pm

I understand that guard cells are the only epydermal cells in the leaf which have chloroplasts. I thought it had to do with making sugar for increasing the water potential and help open the stomata, but i read that there is no evidence suggesting photosynthesis takes place there, and that it is the potassium concentration that takes care of regulating water in the guard cells. So, does anybody know or have a theory as to what is the function of chloroplasts in the guard cells?
”It is not the strongest of the species that survives, nor the most intelligent that survives. It is the one that is the most adaptable to change.”
~Charles Darwin
User avatar
TheVirus
Coral
Coral
 
Posts: 188
Joined: Sun Nov 01, 2009 4:23 pm

Postby JackBean » Fri Dec 24, 2010 11:16 am

http://www.biolib.cz/en/main/

Cis or trans? That's what matters.
User avatar
JackBean
Inland Taipan
Inland Taipan
 
Posts: 5692
Joined: Mon Sep 14, 2009 7:12 pm

Postby JackBean » Fri Dec 24, 2010 11:48 am

and BTW it's epIdermis ;)
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.
User avatar
JackBean
Inland Taipan
Inland Taipan
 
Posts: 5692
Joined: Mon Sep 14, 2009 7:12 pm


Postby leftventricle » Sun Jan 02, 2011 1:03 pm

Speaking of guard cells...I had some questions.

The water that moves in or out of the guard cells when opening or closing has nothing to do with transpiration, am I correct?

Transpiration has to do with the loss of water through the STOMATA of a leaf?
leftventricle
Garter
Garter
 
Posts: 28
Joined: Thu Jul 29, 2010 1:00 am

Postby leftventricle » Sun Jan 02, 2011 1:07 pm

And also, why does decreased levels of sucrose cause the stomata to close at night?
leftventricle
Garter
Garter
 
Posts: 28
Joined: Thu Jul 29, 2010 1:00 am

Postby JackBean » Tue Jan 04, 2011 4:52 pm

and guard cells guard stomata, don't they?
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.
User avatar
JackBean
Inland Taipan
Inland Taipan
 
Posts: 5692
Joined: Mon Sep 14, 2009 7:12 pm


Return to Botany Discussion

Who is online

Users browsing this forum: No registered users and 1 guest