Talk:Gram-positive bacteria

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Should be more similar to the Gram-negative article[edit]

This article should be more similar to the Gram-negative article. Previous unsigned comment made by

I agree, if I get any spare time I will attempt some improvements. If anyone feels like a stab it, go ahead. Mushintalk 23:30, 26 April 2006 (UTC)

No practical value[edit]

\This article has no practical value and must be redone...I agree. --Sugarskane 04:46, 20 July 2006 (UTC)

It has a lot of value actually. No article is ever complete, and this one is just less complete than some others. Mushintalk 12:33, 20 July 2006 (UTC)
Correct, no article is ever done, but it still needs to be redone -- it's more a series of GP bacteria than an explanation of what it means to be GP. --Sugarskane 15:04, 20 July 2006 (UTC)
Mushin is right, this is actually very important. I know I'm replying to a two-year old message. Some of you probably aren't even active. I know I had to look this up for science fair. DarkestMoonlight (talk) 14:44, 17 April 2008 (UTC)

the Gram Negative page states "Many species of Gram-negative bacteria are pathogenic," -- are gram-positive species less likely to be pathogenic? (I would consider this very useful information for someone who is not familiar with the subject). Rdchambers 08:17, 25 February 2007 (UTC)

This should now be addressed in the article. Schu1321 (talk) 23:04, 16 May 2008 (UTC)

Classification - OM[edit]

I removed the following section from the classfication section (at least temporarily) as it seemed somewhat confusing and was unreferenced. I will look into reworking it and adding it back in, if someone else wants to look at it or revert that change, feel free. Schu1321 (talk) 22:48, 16 May 2008 (UTC)

"If the second membrane (of Gram-negative bacteria) is a derived condition, the two may have been basal among the bacteria; otherwise they are probably a relatively recent monophyletic group. They have been considered as possible ancestors for the archaeans and eukaryotes, both because they are unusual in lacking the second membrane and because of various biochemical similarities such as the presence of sterols."

Actinobacteria (including Corynebacterium) are not Firmicutes: In the original bacterial phyla, the Gram-positive organisms made up the phylum Firmicutes, a name now used for the largest group. It includes many well-known genera such as Staphylococcus, Streptococcus, Enterococcus, (which are cocci) and Bacillus, Corynebacterium, Nocardia, Clostridium, Actinobacteria, and Listeria (which are rods and can be remembered by the mnemonic obconical). —Preceding unsigned comment added by (talk) 20:11, 16 June 2010 (UTC)


I believe that there should be a thorough explanation of the effects of GP vs GN bacteria on different antibiotics and the relative effectiveness of these antibiotics on the bacteria (i.e. how some are less effective on GN bacteria because they attack peptidoglycan and not the reproductive parts of the bacteria). At least a link should be posted to the antibiotic article that has this info (Actually, I'm not sure if it does have this info...) (talk) 00:51, 6 March 2009 (UTC)

Streptococcus misspelled in Gram positive heirarchy graphic[edit]

Invite correction, to add to professionalism of the appearance of this article. Prof D. Meduban (talk) 17:12, 30 July 2011 (UTC)

Done. Stepto > Strepto. --Squidonius (talk) 22:10, 30 July 2011 (UTC)

The graphic titled "Species identification hierarchy in clinical settings" should say Streptococcus not Steptococcus. — Preceding unsigned comment added by Jason.Rafe.Miller (talkcontribs) 23:33, 22 September 2014 (UTC)

Exceptions section needs strengthening...[edit]

with added firmness, on the basis of 16S and other molecular phylogenetic information. Prof D Meduban (talk) 17:13, 30 July 2011 (UTC)

Not sure what you mean by "added firmness" via phylogeny. Bacterial phyla contains several cladograms that could be copied. I can envision a small cladogram of Firmicutes orders with coloured lines to indicate Gram strain (maybe using the new cladex template), but I am not sure how that would help. The section can be however expanded greatly and there is a review paper which deals with cell structure (Sutcliffe, I. C. (2010). "A phylum level perspective on bacterial cell envelope architecture". Trends in Microbiology 18 (10): 464–470. doi:10.1016/j.tim.2010.06.005. PMID 20637628.  edit) --Squidonius (talk) 23:42, 30 July 2011 (UTC)

Multiple inaccuracies[edit]

This article contains multiple inaccuracies and out of date emphasis. "Monera" idea is long out of date, unneeded here. An S-layer is not a "membrane." It is misleading to say that most human pathogens are Gram positive, as there are plenty of Gram negative pathogens (Salmonella, V. cholerae etc.). --Joan Slonczewski, microbiologist at Kenyon College — Preceding unsigned comment added by (talk) 15:52, 1 April 2012 (UTC)

This is too complicated[edit]

This article, well written as it is, is way too complicated for the average Wikipedia reader. I have some medical breakdown and even with that I couldn't follow most of it. I think it needs to be thoroughly re-written so that it reads more like a patient package insert and less like a pharmaceutical textbook.

Risssa (talk) 22:05, 22 February 2014 (UTC)

Standardized spelling & punctuation[edit]

Standard form used by the US Federal Government's Center for Disease Control is as follows: [1]

Gram should be capitalized and never hyphenated when used as Gram stain; gram negative and gram positive should be lowercase and only hyphenated when used as a unit modifier.
  • Gram staining
  • gram negative
  • gram-positive bacteria

It would be helpful for this article, Gram-negative bacteria, and Gram staining to be standardized accordingly. Wikiuser100 (talk) 15:03, 17 March 2014 (UTC)

See similar thread at Talk:Gram-negative bacteria > Standardized spelling & punctuation. Quercus solaris (talk) 02:48, 12 June 2014 (UTC)