#halobacteria

[does-this-require-cyanobacteria]

Halobacteria (Cyanobacteria's dark alter ego)

Halobacteria WOULD exist without Cyanobacteria!

Despite their name, Halobacteria are not even bacteria, but actually belong to the domain Archaea, just like humans do! In fact, all eukaryotes actually belong to the domain Archaea, however, not all Archaea are eukaryotic (Halobacteria are prokaryotes). Regardless, Halo-not-bacteria would be able to exist without Cyanobacteria. Although it is true that Halobacteria prefer to live in an aerobic (has O2) environment, they can survive perfectly fine in an anerobic (doesn't have O2) one.

In fact, Halobacteria are some of the only organisms which are not related to (or do not contain, in plants' case) Cyanobacteria that can photosynthesize! They do not use CO2 in their photosynthesis process because it does not create sugars when it photosynthesizes. Instead, Halobacteria only use the process to generate ATP (kind of like if a plant were to just stop photosynthesis after the PSII part was over), and instead get organic molecules from their environment to use for energy. However, Halobacteria can also produce energy in other ways, such as fermentation. Either way, they don't rely on Cyanobacteria!

[earthstory]

Pink Lakes Halobacteria (a form of Archea) thrive in water bodies with high salt content (at an optimal concentration of 20-25%), to the extent they are considered extremophiles. Crucially to Halobacteria’s ‘pink-ness’ they contain a pigment called bacteriorhodopsin that is used to absorb light in photosynthesis. However, with large blooms of halobacteria lakes can appear red or pink, as seen in the photo above.

The classic example of a lake showing this feature is Pink Lake (also known as Hiller Lake) in Western Australia; which is affected by Halobacteria cutirubrum and Dunaliella salina. The photo does not show a lake, though; instead it shows the salt ponds in San Francisco Bay. These show the same bright colouring due to the same halobacteria as discussed earlier. The green pools contrast the pink ones both in colour and salinity, as the green has low salinity that allows green algae to thrive. The orange pool, however, holds its colour due to Brine shrimp, which generally occur in mid-salinities. ~SA Image: http://bit.ly/1LNYb1p by Grombo Hellier Lake: http://bit.ly/1Msw2xB

[petri808]

Whoa 😲 this is trippy lol PINK WATER

[saint-pythia]

[Werbung] Überrascht wurde ich zum Wochenende mit diesem besonderen Halobacteria Restoring Set, bestehend aus dem ‚Elasticity Gesichtsserum‘ & der ‚Nutri-action Creme’ von @ahava, die ich passend zum Neumond für @ybpn_de testen darf. 🍃😌🍃✨🌙 Ahava Cosmetics steht für naturbelassene Gesichtspflege mit Ingredienzen aus dem mineralischen Toten Meer. Die Produkte werden vegan und crueltyfree hergestellt. Besondere Eigenschaft der hier angewandten Rezeptur ist ihr feuchtigkeitsspendender Effekt und ein Wirkstoffkomplex aus Osmoter(TM) mit Halobakterien, wie auch Extrakten der chinesischen Evodia-Ruteacarpa-Frucht. Mit dieser Systempflege wird die Widerstandsfähigkeit der Haut gestützt und ihre natürliche Regeneration gefördert. Ok, kann losgehen! 🙌 #ybpnerleben #ahavameanslove #halobacteria #ahava #gesichtspflege #mineralisch #ahavahalobacteriarestoringnutriactioncream #vegab #peta #blogger_de #ahavahalobacteriaredtoringelasticityserum @ahava_germany https://www.instagram.com/p/Cnuk2iZMm74/?igshid=NGJjMDIxMWI=

[gabyglifestyle]

From a distance, #LakeHillier of #Australia’s Recherche Archipelago looks like a swath of solid bubble-gum pink. Draw closer, and the color takes on a more watery, translucent quality, but remains unmistakably pink. Whereas the causes behind the unusual coloring of other pink lakes, such as the nearby Pink Lake and Senegal’s Lake Retba, have been definitively confirmed, the reason for Lake Hillier’s color remains a mystery. Theories abound, of course. Some speculate that Lake Hillier’s color, like that of the other lakes, is the result of high salinity combined with the presence of a salt-loving algae species known as #Dunaliellasalina and pink bacteria known as #halobacteria. Unlike other #pinklakes, however, which regularly change colors in accordance with temperature fluctuations, Lake Hillier maintains its pink shade year-round. The water even retains its rosy hue when bottled. Whatever the cause, the water does not appear to pose any danger to humans. Swimming in it is not possible anyway, since the island is used only for research purposes and tourists can admire it only from above on helicopter rides. https://www.instagram.com/p/B8t2jgJgroy/?igshid=1mlmiunv8xvax

[carrmodo]

Some drawings I’ve done/started recently of plants and animals I thought of when I was younger.

 1 & 2: The reason some of the plants are purpleish magenta is because their ancestor engulfed a halobacterium containing the purpleish magenta light sensitive pigment retinal which then lived in endosymbiosis within it. This is like how plants on Earths ancestor engulfed a cyanobacterium containing the light sensitive pigment chlorophyll which then lived in endosymbiosis within the plant as the plants chloroplasts like how mitochondria were aerobic bacteria that plants and animals ancestors engulfed.

3: Because of the colour change some of the purpleish plants would likely have bright green flowers which insects would be attracted to but not purpleish coloured flowers.

4: A lot of animals would also likely be purpleish in order to camouflage. The humanoid like insect creature I’ve started drawing is purpleish magenta during its solitary phase. These colours would be due to reddish carotenoid pigments and either crystalline structures or blue pigments. The insectoid creature is not ment to be realistic and is inspired by the luminoth from Metroid Prime. The insect creature is very small and so still breathes through trachea. The insectoids also rarely have erythrism a rare genetic mutation that makes grasshoppers appear bright pink.

5: The last drawing is red grass. It’s red because of the pigment phycoerythrin which is also why red algae is red. Red algae is usually reddish because it typically lives at depths of the ocean where only blue light can penetrate so the the red pigment actually helps the red algae to absorb blue light for photosynthesis. I just made the grass red because I thought it would look nice but I guess if it evolved on a planet with an atmosphere that only let blue light through or if it orbited a blue star it could be red if that’s possible.

6: Grasshopper with erythrism (genetic mutation).

7: Red algae.

[cienciasnacionales]

De donde puede provenir el misterioso color rosa del lago Hillier en Australia

De donde puede provenir el misterioso color rosa del lago Hillier en Australia

En la actualidad son muchas las especulaciones que existen sobre el origen del misterioso color rosado del lago Hillier de Australia, pero en la realidad no se ha comprobado ninguna de estas especulaciones que han buscado darle una repuesta a este gran misterio; sin embargo, estas inquietantes aguas de color rosado pueden tener una explicación biológica en el ambiente, la cual te trataremos de…

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[camleeyoga]

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