biology

Leohumicola atra

Leohumicola atra 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 Leohumicola atra rather than just read about it. In short: Leohumicola atra is a species of fungus. It is named after the dark-brown colour of its terminal conidia cells (atra is Latin for "dark").

Key takeaways

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

Reference excerpt

Leohumicola atra is a species of fungus. It is named after the dark-brown colour of its terminal conidia cells (atra is Latin for "dark"). It was found in Crater Lake National Park, Oregon, from heated soil. This species' conidia terminal cell becomes a darker brown compared to its cogenerate species, being nearly black.

Description Its conidiogenous hyphae are hyaline, measuring approximately 1–2.5 μm wide, often found in fascicles in aerial mycelium. These are reduced to a single denticle that is 0.5–1.0 μm long and 1.0–2.0 μm wide. Conidia are two-celled, either solitary or distributed side by side in clusters. Its terminal cell is 4.5–5.5 by 4.0–5.5 μm, being globose to subglobose, transitioning to a dark brown colour; its conidial walls are slightly thick. Aleurioconidia are sometimes found as single-celled, with a terminal cell directly attached to the hypha, and with no basal cell. Chlamydospores are sparsely produced, being intercalary, single, and the same colour as the conidial terminal cell. The vegetative mycelium often carry swollen, monilioid hyphae that are 1.5 to 2 μm wide, septate, and show thickened walls.

References

Further reading Chen, Juan, et al. "Leohumicola, a genus new to China." Mycotaxon 108.1 (2009): 337–340. Shenoy, Belle Damodara. Multigene phylogeny of selected anamorphic ascomycetes. Diss. The University of Hong Kong (Pokfulam, Hong Kong), 2007.

Worked examples

Example 1 — a first encounter with Leohumicola atra

Start with the simplest possible case. Write down what Leohumicola atra 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 Leohumicola atra 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 Leohumicola atra 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 Leohumicola atra

In research: Leohumicola atra 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 Leohumicola atra 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: Leohumicola atra is common in secondary-school and first-year university syllabi. It links to neighbouring topics Fungal plant pathogens and diseases, Fungi described in 2008, Fungus species, so understanding it makes those chapters shorter.
In everyday life: Look for Leohumicola atra 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 Leohumicola atra in 20 minutes

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

Frequently asked questions

What is Leohumicola atra in simple terms?

Leohumicola atra is a species of fungus. It is named after the dark-brown colour of its terminal conidia cells (atra is Latin for "dark").

Why does Leohumicola atra 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 Leohumicola atra?

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 Leohumicola atra.