biology

Slafractonia leguminicola

Slafractonia leguminicola 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 Slafractonia leguminicola rather than just read about it. In short: Slafractonia leguminicola (formerly Rhizoctonia leguminicola) is a fungus that is a plant pathogen that most often attaches itself to the Trifolium pratense or red clover. It is also called black patch disease.

Key takeaways

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

Reference excerpt

Slafractonia leguminicola (formerly Rhizoctonia leguminicola) is a fungus that is a plant pathogen that most often attaches itself to the Trifolium pratense or red clover. It is also called black patch disease. The infection is first seen as small black patches on the leaves of red clover (often on the bottom of the leaves first) and spreads to cover the entire plant, killing it. The hyphae of this fungus are white and web-like in appearance, just like those of other fungi. The consumption of the fungus can be harmful to any grazing animals, especially to horses and cows.

Effects of consumption If Slafractonia leguminicola is consumed excessively by horses or cattle, the most noticeable symptom will be an increase in salivation (drool). Other symptoms include "eye discharge, bloat, frequent urination, watery diarrhea, reduced milk production, weight loss and abortion." The consumption must be exorbitant to cause these symptoms in such large animals, but if the pasture consists mainly of clover, and the hay also contains clover, the danger of more serious symptoms rises. This is known as slobbers, also slobbers syndrome, and is attributed in part to the alkaloid toxins slaframine and swainsonine.

References

External links Index Fungorum USDA ARS Fungal Database Description of Black Patch Disease

Worked examples

Example 1 — a first encounter with Slafractonia leguminicola

Start with the simplest possible case. Write down what Slafractonia leguminicola 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 Slafractonia leguminicola 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 Slafractonia leguminicola 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 Slafractonia leguminicola

In research: Slafractonia leguminicola 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 Slafractonia leguminicola 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: Slafractonia leguminicola is common in secondary-school and first-year university syllabi. It links to neighbouring topics Fungal plant pathogens and diseases, Fungi described in 1956, Fungus species, so understanding it makes those chapters shorter.
In everyday life: Look for Slafractonia leguminicola 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.

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Slafractonia leguminicola in 20 minutes

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

Frequently asked questions

What is Slafractonia leguminicola in simple terms?

Why does Slafractonia leguminicola 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 Slafractonia leguminicola?

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 Slafractonia leguminicola.