science

Pilobolaceae

Pilobolaceae is a science 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 Pilobolaceae rather than just read about it. In short: The Pilobolaceae are a family of fungi in the Mucorales order. Generally, species in this family have a widespread distribution, although there are some that are restricted to tropical and subtropical regions.

Key takeaways

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

Reference excerpt

The Pilobolaceae are a family of fungi in the Mucorales order. Generally, species in this family have a widespread distribution, although there are some that are restricted to tropical and subtropical regions. This family includes two genera: Pilobolus, and Utharomyces.

Morphology All species produce unusual, phototrophic sporangiophores. These sporangiophores give rise to dark-colored, columellate sporagia covered in calcium oxalate crystals. In Pilobolus and Utharomyces, inflated structures filled with yellow carotenoid pigments give rise to the sporophores; these two genera also produce subsporangiul vesicles. Zygospores are formed on apposed, entwined suspensors, usually at or below the dung.

Ecology All species grow on dung but can rarely be isolated from the soil. Pilobolus are common on many types of herbivore dung, while Utharomyces grows on rodent dung. Utharomyces appears to be restricted to the tropics.

Dispersal This family has spectacular means of dispersal. Many species require passage through the gut of an herbivore in order for the spores to germinate. The problem is that many animals tend to avoid eating their own dung. To compensate, remarkable mechanisms of spore dispersal are used. In Pilobolus, the subsporangial swelling acts as a lens to focus light on light-sensitive pigments at the base of the swelling. Turgor pressure builds inside of the swelling until it ruptures, and the sporangium is hurled for 2 meters. The calcium oxalate crystals helps it adhere to the surface it lands on, and if the surface is wet, the crystals allow the sporangium to rotate. This rotation allows the mucus surrounding the spores (under the crystals) to glue it to surface where it will await ingestion by an herbivore. Nematodes have been observed climbing the sporangiophore or swimming inside of it to catch a ride on the sporangium. While many species may do this, it seems only Dictyocaulus vivipores, cattle lungworm, are able to survive the trip. Mechanisms of dispersal are less known in these genera. In both genera, the sporangiophore, guided by light, elongates until the sporangium is brought into contact with a solid surface. In Pilobolus, contact with the surface causes a rupture at the columella, which releases the sporangium, which adheres to the new surface. In Utharomyces, contact with the surface ruptures the subsporangial swelling. This releases cytoplasm, which is used to glue the upper portion of the swelling containing the sporangium to the substrate.

References

External links

Pilobolus crystallinus, "The Fung in the Dung" by Tom Volk Pilobolus and the Lungworm at the Cornell Mushroom Blog (with time lapse video) Interview with a Fungus Zygomycetes:Pilobolus at Zygomycetes.org

Illustrations

Worked examples

Example 1 — a first encounter with Pilobolaceae

Start with the simplest possible case. Write down what Pilobolaceae claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, 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 Pilobolaceae 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 Pilobolaceae 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 Pilobolaceae

In research: Pilobolaceae appears in science 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 Pilobolaceae 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: Pilobolaceae is common in secondary-school and first-year university syllabi. It links to neighbouring topics Fungus families, Taxa described in 1842, Taxa named by August Carl Joseph Corda, so understanding it makes those chapters shorter.
In everyday life: Look for Pilobolaceae 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 Pilobolaceae in 20 minutes

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

Frequently asked questions

What is Pilobolaceae in simple terms?

Why does Pilobolaceae matter?

Because it connects several science 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 Pilobolaceae?

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 Pilobolaceae.