Talk:Stoma

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Wiki Education Foundation-supported course assignment[edit]

This article is or was the subject of a Wiki Education Foundation-supported course assignment. Further details are available on the course page. Student editor(s): Patterson115.

Above undated message substituted from Template:Dashboard.wikiedu.org assignment by PrimeBOT (talk) 10:14, 17 January 2022 (UTC)[reply]

Untitled[edit]

I want to know why are stomas opened during the day and why are they closed during the night?? Thank you! Dumbassrina

Do plant photosynthesis during the day or night? Why would that be relevent? David D. (Talk) 09:32, 1 February 2006 (UTC)[reply]

Stomata are not always open day and/or night, this depend on the strategy (program) the plants 'follows'. In most plants they are open during the day for CO2 intake and water release. Water release by transpiration (also) regulates temperature of the leaf/stem (because evaporating fluid extracts heat). Some plants choose to take up CO2 at night, temporarily store it and do the photosynthesis starting from this stored carbon source.

DavidDHaese 14:04, 10 February 2006 (UTC)[reply]

Stomata types and functions in vascular plants[edit]

Hi i'm writing an essay for a first year bio class and am having a very hard time finding information about stomata types in vascular plants. I was wondering if anyone could lead me to some good websites, or has some knowledge they are willing to share,

Thanks :)

Is the stomata in the plant cell? Doomsboy 14:04, 10 February 2006 (UTC)[reply]

No, the stoma is the opening formed between two cells. (Stomata is plural.) --EncycloPetey 04:24, 18 August 2007 (UTC)[reply]

IS EVERY PLANT HAVE STOMATA — Preceding unsigned comment added by 117.224.30.69 (talk) 07:40, 1 July 2011 (UTC)[reply]

No. Liverworts have no stomata and neither do plants that grow submerged. There are other special exceptions as well. --EncycloPetey (talk) 13:23, 1 July 2011 (UTC)[reply]

Sclerenchyma or Parenchyma?[edit]

My intro biology prof told us that the gaurd cells of stomata are sclerenchyma cells, was she incorrect? The article states they're parenchyma cells. —Preceding unsigned comment added by 142.68.216.112 (talk) 01:56, 7 February 2008 (UTC)[reply]

She was incorrect. Mature sclerenchyma cells have no protoplasts (p87, Introduction to Plant Morphology by Eames & McDaniels), and are classified as either sclereids or fibers (p.9, Plant Anatomy, 2nd ed., by Katherine Esau). Guard cells are living and active cells, and must be so in order to function. Thus, they are classified as parenchyma cells. --EncycloPetey (talk) 07:21, 7 February 2008 (UTC)[reply]

Stomata as atmospheric gas proxies[edit]

So we all know that Stomata (specifically Stomatal Index) is an indication of the environment that the plant has grown in, telling us the atmospheric gas concentrations as well as several other data. Since Stomata are relatively old traits (I belive they are apparent in the fossil record sometime in the Devonian?) we can use them to be proxies for some environmental conditions. What is currently most popular is the use of Stomatal Index in extant species which are found in relatively the same morphological state in the fossil record, such as Ginkgo, to use in determining ancient atmospheric CO2 levels to use in Global Climate Change studies. —Preceding unsigned comment added by 129.133.198.187 (talk) 01:57, 4 March 2008 (UTC)[reply]

Merge guard cell here[edit]

I think that guard cell should be merged here - stomata and guard cells are essentially the same thing, neither page is currently very long and the adding the content from guard cell would massively improve the quality of this article. Comments? SmartSE (talk) 12:06, 30 April 2013 (UTC)[reply]

I also believe that guard cell should be merged because stomata function based on the actions of the guard cells. Since a stoma is only essentially the space between two guard cells and the function of a stoma is reliant on guard cells, information on guard cells should be included. — Preceding unsigned comment added by 70.185.105.55 (talk) 23:45, 19 March 2015 (UTC)[reply]

Stomata and guard cell[edit]

Both of them are same so they should be merged. Ahmad Shayan (talk) 19:43, 22 June 2015 (UTC)[reply]

Support They are not synonyms, of course, but there is no good reason to deal with them in separate articles.Plantsurfer 20:29, 22 June 2015 (UTC) Plantsurfer 08:22, 8 August 2015 (UTC)[reply]

Need New Section for Stomatal Crypts and More Information on Stomata as a Pathogenic Pathway[edit]

Hi, I'm a Plant Physiology student. I was reading through the Stoma article and noticed there was some missing information. There wasn't a section on stomatal crypts which are large chambers that contain stomata and are located in the lower epidermis of oleander leaves. Also, I have a question regarding the section Stomata as a Pathogenic Pathway. Is there any information that could be added to this section on the effects of Gram negative and Gram positive bacteria on the stomata? Patterson115 (talk) 01:53, 29 January 2017 (UTC)[reply]

Update on stomatal development[edit]

I updated the material on stomatal development in an attempt to clarify the roles of the signal transduction components. However, I had trouble verifying the statement "Stomata positioning results from CO2 activating EPF1, which activates TMM/ERL ...", so I made it more general instead of specifically about CO2. Was there a specific reference for this part? I can update to more recent research about CO2 and stomatal development but was not sure that it was really necessary for this article. Marciaharrison (talk) 14:01, 17 February 2017 (UTC)[reply]