Talk:Phototroph

From Wikipedia, the free encyclopedia
Jump to: navigation, search
WikiProject Molecular and Cellular Biology (Rated Start-class, Top-importance)
WikiProject icon This article is within the scope of the WikiProject Molecular and Cellular Biology. To participate, visit the WikiProject for more information.
Start-Class article Start  This article has been rated as Start-Class on the project's quality scale.
 Top  This article has been rated as Top-importance on the project's importance scale.
 

This article has comments here.

WikiProject Plants (Rated Start-class, High-importance)
WikiProject icon This article is within the scope of WikiProject Plants, a collaborative effort to improve the coverage of plants and botany on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.
Start-Class article Start  This article has been rated as Start-Class on the project's quality scale.
 High  This article has been rated as High-importance on the project's importance scale.
 
WikiProject Algae (Rated Start-class, High-importance)
WikiProject icon This article is part of WikiProject Algae, which aims to improve Wikipedia's coverage of the photosynthetic organisms commonly called algae and related topics. If you would like to participate, visit the project page.
Start-Class article Start  This article has been rated as Start-Class on the project's quality scale.
 High  This article has been rated as High-importance on the project's importance scale.
 

Fungi are unlikely to be phototrophs. All of the types I can think of obtain their energy by breaking down other organic material. That would make them chemoorganoheterotrophs.

fungi are heterotrophs that feed by absorption

(campbell & reece, 2005) Kelkhara 17:02, 9 April 2006 (UTC)


Besides that, higher plants are not mentioned at all in the first sentence. With "fungi" the author probably refers to lichens (mentioned later in the paragraph). But the phototrophic components of lichens are not always cyanobacteria, but (most often) algae. Anyway the fungal component is not phototrophic on its own. Lichens are photobionts through the symbiont algae or cyanobacteria (though the cyanobacteria can be endosymbionts). I suggest some rewriting here.

And by the way, the first sentence, with all its errors, is exactly the same as the definition in http://www.yourdictionary.com/ahd/p/p0268800.html, so it looks like the first and last part of the paragraph have different authors. Is copy and paste work?

(any modern schoolbook on botany has it right) [] 13 November 2006

Merge[edit]

Currently this article deals with photosynthetic organisms but there's already one dedicated to photosynthesis. This article should be merged with photoheterotroph for a better treatment of the different biological methods of harvesting solar energy, i.e. photosynthesis and bacteriorhodopsins. Bendž|Ť 13:59, 1 August 2007 (UTC)

No, what this article needs is language that describes what's common between photoautotrophy and photoheterotrophy. Each of those deserves its own article, and phototrophy is not synonymous with either. The problem with this article now is that, yes, it replicates content in both auto ands hetero articles, without showing what's different and what's the same between those two. A merge is not the solution: the solution is to write a whole new phototrophy article that is actually about phototrophy in the aggregate. 76.200.150.238 18:15, 15 September 2007 (UTC)

I agree - photoautotrophs come under the category of autotrophs, while photoheterotrophs are a type of heterotroph, 2 distinct things. Perhaps it would be a good idea to have a links table on the right-hand side of the page which gives links to autotrophs, chemoautotrophs, heterotrophs, photoheterotrophs and chemoheterotrophs to make the relationship between these 6 pages clearer. —Preceding unsigned comment added by 124.186.226.222 (talk) 02:39, 15 March 2008 (UTC)

gah[edit]

Phototrophy is obtaining cellular/metabolic energy from light. Photosynthesis is creating hydrocarbons from either atmospheric CO2 or dissolved bicarbonate - i.e. engage in carbon fixation.

Trophy = obtaining energy Synthesis = make something

All known photosynthesizers are phototrophs. Not all phototrophs are photosynthesizers (e.g. Archaea which can use bacteriorhodopsin to capture light and use the energy to establish a proton gradient, which in turn allows them to move. They however are not known to "fix" carbon).

Additionally growth toward or away from sunlight is not called "trophy". That's being phototactic

I'll make changes to the article shortly... Pagelm (talk) 21:18, 5 April 2012 (UTC)

expanded terms[edit]

it's getting to the point where this article should maybe be scrapped and started again from scratch. In any case, it may be helpful to define or clarify more terms.

For example, most heterotrophs are chemoorganoheterotrophs. But yes, there are photoorganoheterotrophs and photomixotrophs [can grow either a) autotrophically or b) "eating" and incorporating small organic molecules from their outside environment].

Further complicating matters is the phototrophs can be divided into the chlorophototrophs and opsin(?)phototrophs (which as mentioned are not autotrophic). Some of the chlorophototrophs are hetero or mixos, as stated above. As I'm not feeling particularly literate at the moment, I won't edit the article itself at this time.

Pagelm (talk) 04:09, 15 February 2014 (UTC)