science

Kriegeriales

Kriegeriales 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 Kriegeriales rather than just read about it. In short: The Kriegeriales are an order of fungi in the subdivision Pucciniomycotina. Most species are known only from their yeast states and can be found in a variety of habitats, ranging from arctic waters to tropical ferns.

Key takeaways

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

Reference excerpt

The Kriegeriales are an order of fungi in the subdivision Pucciniomycotina. Most species are known only from their yeast states and can be found in a variety of habitats, ranging from arctic waters to tropical ferns. Hyphal states produce auricularioid (laterally septate) basidia.

Taxonomy The order was described in 2013 based on evidence from DNA sequence data that showed that a newly discovered neotropical yeast, Meredithblackwellia eburnea, was closely related to several species in the genera Kriegeria, Camptobasidium and Glaciozyma. Further research added the new genera Phenoliferia and Yamadamyces to accommodate several yeast species formerly placed in Rhodotorula.

Morphology Most species of Kriegeriales are asexually reproducing yeasts that do not currently have a known sexual state. All are white or cream, with elongated cells that reproduce by budding at either end. A handful of species have been studied in greater detail and for these it has been shown that the nuclear division of the yeast state occurs in the bud, a common character shared with most other basidiomycete yeasts. However, in Meredithblackwellia eburnea, Kriegeria eriophori, and Yamadamyces rosulatus budding cells remain attached to each other at the base, forming characteristic clusters of cells that are otherwise unknown in basidiomycete yeasts. The species in Glaciozyma differ in that these are yeasts with a known sexual state. Only two members of Kriegeriales, Kriegeria eriophori and Camptobasidium hydrophilum, are known to form hyphae. Of these, K. eriophori also has an asexual yeast state, leaving C. hydrophilum as the only species in the order that is hyphal throughout its life cycle. Ultrastructural studies of these two hyphal species have determined that they have simple septal pores, as is true for all other known Pucciniomycotina.

Habitat and distribution Species of Kriegeriales can be found in a variety of ecological niches. The members known to date include plant parasites (Kriegeria eriophori), aquatic fungi (Camptobasidium hydrophilum), saprobes, or have unknown roles in nature. Some have been isolated from psychrophilic environments and are associated with glaciers or the Antarctic sea. For example Glaciozyma antarctica was one of the first basidiomycete yeasts ever isolated from the Antarctic sea. Others have been isolated from the leaf surfaces of various plants both from temperate and tropical regions; their role in these habitats is unknown.

References

Illustrations

Worked examples

Example 1 — a first encounter with Kriegeriales

Start with the simplest possible case. Write down what Kriegeriales 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 Kriegeriales 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 Kriegeriales 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 Kriegeriales

In research: Kriegeriales 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 Kriegeriales 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: Kriegeriales is common in secondary-school and first-year university syllabi. It links to neighbouring topics Basidiomycota orders, Pucciniomycotina, Taxa described in 2013, so understanding it makes those chapters shorter.
In everyday life: Look for Kriegeriales 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 Kriegeriales in 20 minutes

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

Frequently asked questions

What is Kriegeriales in simple terms?

Why does Kriegeriales 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 Kriegeriales?

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 Kriegeriales.