Plants That 'Close' At Night - The Planted Tank Forum
 
LinkBack Thread Tools Display Modes
post #1 of 10 (permalink) Old 05-02-2008, 10:34 AM Thread Starter
Planted Tank Guru
 
waterfaller1's Avatar
 
Join Date: Jul 2006
Location: Florida
Posts: 5,306
Send a message via AIM to waterfaller1
Plants That 'Close' At Night

Hello!
Some of you may notice I get up pretty early in the morning..usually around 2-4 a.m. Consequently I like to peek in and see what my tanks are doing at night.
I have several stem plants that close/ fold up at night. How do they do it? It isn't like they have muscles...
And, why do they do it? How come other plants do not?
waterfaller1 is offline  
Sponsored Links
Advertisement
 
post #2 of 10 (permalink) Old 05-02-2008, 11:34 AM Thread Starter
Planted Tank Guru
 
waterfaller1's Avatar
 
Join Date: Jul 2006
Location: Florida
Posts: 5,306
Send a message via AIM to waterfaller1
Thank you so much. I am starting to research the word. Very interesting..even suggestions by Charles Darwin.
waterfaller1 is offline  
post #3 of 10 (permalink) Old 05-02-2008, 11:34 AM
Gar
Planted Tank Obsessed
 
Gar's Avatar
 
Join Date: Mar 2008
Location: Los Angeles, CA
Posts: 392
Send a message via AIM to Gar
Turgor: the normal distention or rigidity of plant cells, resulting from the pressure exerted by the cell contents on the cell walls.

At sundown, the leaves of these plants fold up or droop down. The corresponding unfolding of leaves comes about at dawn. At the base of every leaf and every leaflet lie swollen, hinge-like structures called pulvini. The pulvini are specialized regions containing large, water-filled cells. The water in these cells can be pumped in or out of the pulvini, resulting in changes in turgor. As turgor is decreased through transpiration, a pulvinus acts as a hinge, allowing the leaf to droop; as turgor is increased, the leaf returns to its daytime position.





ďBe who you are and say what you mean, because those who mind donít matter and those who matter donít mindĒ -Theodor Geisel
Gar is offline  
post #4 of 10 (permalink) Old 05-02-2008, 11:34 AM
Gar
Planted Tank Obsessed
 
Gar's Avatar
 
Join Date: Mar 2008
Location: Los Angeles, CA
Posts: 392
Send a message via AIM to Gar
Damn, beaten to the punch.

And I actually spent time going through my Botany textbook ;_;





ďBe who you are and say what you mean, because those who mind donít matter and those who matter donít mindĒ -Theodor Geisel
Gar is offline  
post #5 of 10 (permalink) Old 05-02-2008, 11:36 AM Thread Starter
Planted Tank Guru
 
waterfaller1's Avatar
 
Join Date: Jul 2006
Location: Florida
Posts: 5,306
Send a message via AIM to waterfaller1
Heheh..Thanks to you too Gar. So which is it, or are these two one and the same? Turgor/Nyctinasty?
waterfaller1 is offline  
post #6 of 10 (permalink) Old 05-02-2008, 11:39 AM
Gar
Planted Tank Obsessed
 
Gar's Avatar
 
Join Date: Mar 2008
Location: Los Angeles, CA
Posts: 392
Send a message via AIM to Gar
Nyctinasty is the name for what happens when a plant closes at night. Turgor pressure is different. ^__^





ďBe who you are and say what you mean, because those who mind donít matter and those who matter donít mindĒ -Theodor Geisel
Gar is offline  
post #7 of 10 (permalink) Old 05-02-2008, 11:40 AM Thread Starter
Planted Tank Guru
 
waterfaller1's Avatar
 
Join Date: Jul 2006
Location: Florida
Posts: 5,306
Send a message via AIM to waterfaller1
waterfaller1 is offline  
post #8 of 10 (permalink) Old 05-02-2008, 11:44 AM
Gar
Planted Tank Obsessed
 
Gar's Avatar
 
Join Date: Mar 2008
Location: Los Angeles, CA
Posts: 392
Send a message via AIM to Gar
I took a botany course last semester. It was great and all, but there wasn't anything on aquatic plants, which made me quite sad. I'm actually looking to transfer out to a school that has a major in Limnology. Marine is nice and all, but freshwater is just :3





ďBe who you are and say what you mean, because those who mind donít matter and those who matter donít mindĒ -Theodor Geisel
Gar is offline  
post #9 of 10 (permalink) Old 05-02-2008, 01:47 PM Thread Starter
Planted Tank Guru
 
waterfaller1's Avatar
 
Join Date: Jul 2006
Location: Florida
Posts: 5,306
Send a message via AIM to waterfaller1
Quote:
Originally Posted by ashappar View Post
I think it would look really cool as a time lapse video.
I was thinking the same!
waterfaller1 is offline  
post #10 of 10 (permalink) Old 05-02-2008, 11:17 PM Thread Starter
Planted Tank Guru
 
waterfaller1's Avatar
 
Join Date: Jul 2006
Location: Florida
Posts: 5,306
Send a message via AIM to waterfaller1
So how come other plants, even ones with a similar appearance don't do this? Are they better at conserving the heat without folding up? Are they quicker at absorbing the nutrients they need?
waterfaller1 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the The Planted Tank Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome