biology

Hanseniaspora lachancei

Hanseniaspora lachancei 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 Hanseniaspora lachancei rather than just read about it. In short: Hanseniaspora lachancei is a species of yeast in the family Saccharomycetaceae. It is associated with fermenting agave juice and a tequila production facility in Mexico.

Key takeaways

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

Reference excerpt

Hanseniaspora lachancei is a species of yeast in the family Saccharomycetaceae. It is associated with fermenting agave juice and a tequila production facility in Mexico.

Taxonomy Samples of H. lachancei were first isolated from samples taken at the Tequila Herradura estate in Jalisco, Mexico over a seven-day period in February 1992. Initially mis-identified as atypical Hanseniaspora guilliermondii strains, further testing revealed that the samples were distinct from H. guilliermondii. The species was first described by Neža Čadež, Gé A. Poot, Peter Raspor, and Maudy Th. Smith in 2003 and given the specific epithet "lachancei" after Marc-André Lachance, the yeast taxonomist and ecologist who collected the original samples. Genetic sequencing shows that the species is closely related to Hanseniaspora opuntiae, Hanseniaspora pseudoguilliermondii, and Hanseniaspora guilliermondii.

Description Microscopic examination of the yeast cells in YM liquid medium after 48 hours at 25 °C reveals cells that are 2.5 to 18.5 μm by 1.0 to 5.5 μm in size, apiculate, ovoid to elongate, appearing singly or in pairs. Reproduction is by budding, which occurs at both poles of the cell. In broth culture, sediment is present, and after one month a very thin ring is formed. Colonies that are grown on malt agar for one month at 25 °C appear cream-colored, butyrous, glossy, and smooth. Growth is flat to slightly raised at the center, with an entire to slightly undulating margin. The yeast forms poorly-developed pseudohyphae on cornmeal or potato agar. The yeast has been observed to form four hat-shaped ascospores when grown for at least seven days on 5% Difco malt extract agar. The yeast can ferment glucose and cellobiose, but not galactose, sucrose, maltose, lactose, raffinose or trehalose. It has a positive growth rate at 37 °C, which is a distinguishing characteristic from other species of Hanseniaspora, but there is no growth at 40 °C. It can grow on agar media containing 0.1% cycloheximide and 10% sodium but growth on 50% glucose-yeast extract agar is weak.

Ecology Three strains of the species have been isolated from fermenting agave juice in Mexico as well as from Drosophila species captured inside a tequila facility. It is not known whether it has any human pathogenic potential, but it can grow at a normal body temperature.

References

Worked examples

Example 1 — a first encounter with Hanseniaspora lachancei

Start with the simplest possible case. Write down what Hanseniaspora lachancei 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 Hanseniaspora lachancei 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 Hanseniaspora lachancei 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 Hanseniaspora lachancei

In research: Hanseniaspora lachancei 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 Hanseniaspora lachancei 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: Hanseniaspora lachancei is common in secondary-school and first-year university syllabi. It links to neighbouring topics Fungi described in 2003, Fungus species, Saccharomycetes, so understanding it makes those chapters shorter.
In everyday life: Look for Hanseniaspora lachancei 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 Hanseniaspora lachancei in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Hanseniaspora lachancei 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 Hanseniaspora lachancei out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Hanseniaspora lachancei in simple terms?

Hanseniaspora lachancei is a species of yeast in the family Saccharomycetaceae. It is associated with fermenting agave juice and a tequila production facility in Mexico.

Why does Hanseniaspora lachancei 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 Hanseniaspora lachancei?

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 Hanseniaspora lachancei.