alex
Full Member
Posts: 21
|
Post by alex on Oct 10, 2007 18:22:35 GMT
What is the protocarnivorous plants? This is a Petunia:
|
|
|
Post by BarryRice on Oct 10, 2007 21:17:07 GMT
Hey Alex,
Nice photo of a bug's demise. There are lots of sticky plants out there. In order to be "carnivorous," a plant must be able to attract, trap, kill, digest, and absorb prey by means of its own adaptations. A slight extension of this definition (not agreed upon by all) is that a plant may still be considered carnivorous if it does not do the digestion itself, but works with organisms like bugs that digest trapped prey, then produces feces which are then digested by the plant. The plant must show specific adaptations to absorb the nutrients in such cases.
Anyway, plants which show some, but not all, of those attributes above are considered to be not-quite-carnivores, but are still interesting as almost-carnivores. Such plants are referred to as subcarnivorous, paracarnivorous, semicarnivorous, or hemicarnivorous.
The term protocarnivorous should really be avoided. The prefix "proto" implies a progenitor, and suggests that in time, protocarnivorous plants will evolve into carnivorous plants. However, plants evolve in response to opportunity and selection pressures, and there is no reason to suspect that a plant that is almost carnivorous must evolve towards carnivory. In fact, there may be some cases in which plants which are perhaps paracarnivorous have actually evolved FROM true carnivorous plants.
Another way of looking at this---would you call a petunia a protocarnivorous plants? Why not call it a postcarnivorous plant? You have no proof either way that it will evolve into carnivory, or that it descended from carnivorous ancestors.
Anyway, that's a long answer, when a shorter one could probably have done a much better job!
Barry
|
|
|
Post by glider14 on Oct 11, 2007 2:01:56 GMT
potatoes are also like that. its a defense more than a carnivory. Alex
|
|
|
Post by Deleted on Oct 11, 2007 6:01:01 GMT
lol i was just about to post that potatoes are like this...also some tomato plants are like this......and im pretty sure thr flypaper trap plants are considered protocarnivorous...ex: Ibicella lutea .....and there are some plants that are considered paracarnivorous like Nepenthes ampullaria and Utricularia purpurea
|
|
alex
Full Member
Posts: 21
|
Post by alex on Oct 11, 2007 19:12:15 GMT
Thank you Barry! I see the Internet and I look in lot of page is "protocarnivorous" and I dont'n know what is it.
|
|
|
Post by glider14 on Oct 11, 2007 20:27:14 GMT
Utricularia purpurea? i dont get it...? U. purpurea catches bugs like any other utric...
Alex
|
|
|
Post by Deleted on Oct 11, 2007 21:27:49 GMT
they say u.purpurea cause supposedly it also has a sort of symbiosis with bacteria that it didnt before....im not sure exactly why it is considered that but it is.....i believe wickipedia has a full page on it or an article
|
|
|
Post by ICPS-bob on Oct 11, 2007 22:36:32 GMT
they say u.purpurea cause supposedly it also has a sort of symbiosis with bacteria that it didnt before....im not sure exactly why it is considered that but it is.....i believe wickipedia has a full page on it or an article radjess331: You must be mistaken. I can find no such article at Wikipedia. en.wikipedia.org/wiki/Utricularia_purpureaIt would be helpful to this forum if you were to research your replies for accuracy instead of simply posting unfounded information. If you find useful information, a link to that site would be good so others can see the full discussion.
|
|
|
Post by kitkor on Oct 12, 2007 3:00:54 GMT
they say u.purpurea cause supposedly it also has a sort of symbiosis with bacteria that it didnt before....im not sure exactly why it is considered that but it is.....i believe wickipedia has a full page on it or an article radjess331: You must be mistaken. I can find no such article at Wikipedia. en.wikipedia.org/wiki/Utricularia_purpureaI believe radjess331 meant en.wikipedia.org/wiki/Protocarnivorous_plantThe information on U. purpurea came from: Richards, J.H. (2001). Bladder function in Utricularia purpurea (Lentibulariaceae): Is carnivory important? American Journal of Botany, 88(1): 170-176. I wrote that article on Wikipedia a while ago and have asked for a comprehensive peer review from others, but have received little feedback. Please feel free, if you're so inclined, to read it in whole and forward me corrections or places where the language doesn't represent the sources so we can make it more accurate. Also catch me on my POV (point of view). I need to reread it myself to update it.
|
|
|
Post by Deleted on Oct 12, 2007 4:56:16 GMT
yes thats it alright the part that said u.purpurea is under evolution
|
|
|
Post by Not a Number on Oct 12, 2007 12:38:31 GMT
|
|
|
Post by sarracenialover on Jun 13, 2008 18:07:49 GMT
U. Purpurea is an interesting plant where it derives most of its nutrients from the little communitites living inside it bladders. Richard says that the bladder has really low capturing rates. He says the bladders are weak and inefficient and could possibly be triggered by water movements.
|
|