biology

Halomonadaceae

Halomonadaceae is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Halomonadaceae rather than just read about it. In short: Halomonadaceae is a family of halophilic Pseudomonadota. History The family was originally described in 1988 to contain the genera Halomonas and Deleya.

Key takeaways

Halomonadaceae belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Halomonadaceae to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Halomonadaceae from memory before moving on to harder problems.

Reference excerpt

Halomonadaceae is a family of halophilic Pseudomonadota.

History The family was originally described in 1988 to contain the genera Halomonas and Deleya. In 1989, Chromobacterium marismortui was reclassified as Chromohalobacter marismortui forming a third genus in the family Halomonadaceae. Subsequently, in 1990 a species was discovered and was originally proposed to be called Volcaniella eurihalina forming a new genus in the Halomonadaceae, but was later (in 1995) reclassified as a member of the genus Halomonas. The species Carnimonas nigrificans (sole member of genus) was not placed in the family due to the lack of two out of 15 descriptive 16S rRNA signature sequences, but it has been proposed to reclassify it into the family. In 1996, the family was later reorganised by unifying genera Deleya, Halomonas and Halovibrio and the species Paracoccus halodenitrificans into Halomonas and placing Zymobacter in this family. However, it was later discovered that the strain of Halovibrio variabilis DSM 3051 and DSM 3050 differed and the latter was made type strain of the Halovibrio, which remains still in use. and now comprising two species (the other being Halovibrio denitrificans) In 2002, Halomonas marina was transferred to its own genus Cobetia, and in 2009 Halomonas marisflavi, Halomonas indalinina. and Halomonas avicenniae were transferred to a new genus called Kushneria (5 species) Several singleton genera were created recently: in 2007, Halotalea alkalilenta was described, Aidingimonas halophila in 2009, Halospina denitrificans in 2006, Modicisalibacter tunisiensis in 2009 Salinicola socius in 2009. To the latter genus two species were transferred Halomonas salaria as Salinicola salarius and Chromohalobacter salarius as Salinicola halophilus. The family also contain the recently discovered but uncultured bacterium "Candidatus Portiera aleyrodidarum" (primary endosymbionts of whiteflies).

Genera Halomonas, the type genus Halomonas elongata, the type species of the genus, however the longest known members of the family are Halomonas halodentrificans (1952), Chromohalobacter marismortui (1940) and Chromohalobacter beijerinckii (originally Pseudomonas beijerinckii). Halomonas titanicae Aidingimonas halophila Cobetia Cobetia marina, originally Pseudomonas marina, then Dalya marina, then Halomonas marina. Cobetia crustatorum, isolated from fermented Korean seafood Carnimonas Chromohalobacter Chromohalobacter marismortui Chromohalobacter beijerinckii Chromohalobacter canadensis and Chromohalobacter israelensis, formerly of the genus Halomonas Chromohalobacter japonicus Chromohalobacter nigrandesensis Chromohalobacter salarius Chromohalobacter salexigens Chromohalobacter sarecensis, phychrotolerant Halotalea alkalilenta Kushneria Kushneria aurantia, type species Kushneria marisflavi, Kushneria indalinina and Kushneria avicenniae were previously classified under Halomonas Modicisalibacter Portiera Zymobacter, not to be confused with Zymomonas mobilis, an alphaproteobacterion studies for its biofuel production, an easy error that even the International Code of Nomenclature of Bacteria made in as noted in Note: Species of Deleya and Halovibrio are now Halomonas

Etymology The names derives from Halomonas, which is the type genus of the family, plus the suffix -aceae, ending to denote a family

Research Geomicrobiologist Felisa Wolfe-Simon with a NASA funded team is researching a particular strain the family Halomonadaceae, named GFAJ-1, isolated and cultured from sediments collected along the shore of Mono Lake, near Yosemite National Park in eastern California. This GFAJ-1 strain of Halomonadaceae can grow in the presence of high concentrations of arsenic.

Illustrations

Worked examples

Example 1 — a first encounter with Halomonadaceae

Start with the simplest possible case. Write down what Halomonadaceae claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Halomonadaceae before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Halomonadaceae ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Halomonadaceae

In research: Halomonadaceae appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Halomonadaceae in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Halomonadaceae is common in secondary-school and first-year university syllabi. It links to neighbouring topics Geomicrobiology, Gram-negative bacteria, Halophiles, so understanding it makes those chapters shorter.
In everyday life: Look for Halomonadaceae outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Halomonadaceae in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Halomonadaceae means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Halomonadaceae out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Halomonadaceae in simple terms?

Halomonadaceae is a family of halophilic Pseudomonadota. History The family was originally described in 1988 to contain the genera Halomonas and Deleya.

Why does Halomonadaceae matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Halomonadaceae?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Halomonadaceae.