Ogataea

Key takeaways

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

Reference excerpt

Ogataea is a genus of ascomycetous yeasts in the family Saccharomycetaceae. It was separated from the former genus Hansenula via an examination of their 18S and 26S rRNA partial base sequencings by Yamada et al. 1994. The genus name of Ogataea is in honour of Koichi Ogata (x - 1977), who was a Japanese microbiologist from the Department of Agricultural Chemistry, Faculty of Agriculture, at Kyoto University. It was stated in the journal; "The genus is named in honor of the late Professor Dr. Koichi Ogata, Department of Agricultural Chemistry, Faculty of Agriculture, Kyoto University, Kyoto, Japan, in recognition of his studies on the oxidation and assimilation of methanol (C1 compound) in methanol-utilizing yeasts." The genus was circumscribed by Yuzo Yamada, Kojiro Maeda and Kozaburo Mikata in Biosc., Biotechn. Biochem. vol.58 (Issue 7) on page 1253 in 1994.

Diagnosis Like other yeasts, also the species within the genus Ogataea are single-celled or build pseudohyphae of only a few elongated cells; true hyphae are not formed. They are able to reproduce sexually or asexually. The latter case happens with a cell division by multilateral budding on a narrow base with spherical to ellipsoidal budded cells. In the sexual reproduction the asci are deliquescent and may be unconjugated or show conjugation between a cell and its bud or between independent cells. Asci produce one to four, sometimes more, ascospores which are hat-shaped, allantoid or spherical with a ledge. The species are homothallic or infrequently heterothallic. Ogataea cells are able to ferment glucose or other sugars and some species assimilate nitrate. All known species are able to utilize methanol as carbon source. The predominant ubiquinone is coenzyme Q-7 and the diazonium blue B test is negative. Some species are used and cultured for microbiological and genetic research e.g. Ogataea polymorpha, Ogataea minuta or Ogataea methanolica. Ogataea minuta (Wickerham) Y. Yamada, K. Maeda & Mikata is the type species for this genus.

Species Ogataea consists of several species and is placed within the Saccharomycetales as a sister genus to Ambrosiozyma. Following Kurtzman et al. 2011 the genus consists of 31 species but also shows, that there are several more within the taxon that are part of the polyphyletic genus Candida.

Ogataea allantospora Péter, Tornai-Lehoczki & Dlauchy (2007) Ogataea chonburiensis Limtong, Srisuk, Yongmanitchai, Yurimoto & Nakase (2008) Ogataea corticis Nagatsuka, S. Saito & Sugiyama (2008) Ogataea dorogensis (Péter, Tornai-Lehoczki, Fülöp & Dlauchy) Nagatsuka, S. Saito & Sugiyama (2008) Ogataea falcaomoraisii Morais, Teixeira, J.M. Bowles, Lachance & C.A. Rosa (2004) Ogataea ganodermae F.Y Bai & Z.H. Ji (2008) Ogataea glucozyma (Wickerham) Y. Yamada, K. Maeda & Mikata (1994) Ogataea henricii (Wickerham) Y. Yamada, K. Maeda & Mikata (1994) Ogataea kodamae (van der Walt & Yarrow) Mikata & Y. Yamada (1995) Ogataea methanolica (Makiguchi) Kurtzman & Robnett (2010) Ogataea methylivora (Kumamoto & Seriu) Kurtzman & Robnett (2010) Ogataea minuta (Wickerham) Y. Yamada, K. Maeda & Mikata (1994) Ogataea naganishii (K. Kodama) Kurtzman & Robnett (2010) Ogataea nakhonphanomensis Limtong, Srisuk, Yongmanitchai, Yurimoto & Nakase (2008) Ogataea neopini Nagatsuka, S. Saito & Sugiyama (2008) Ogataea nitratoaversa Péter, Tornai-Lehoczki & Dlauchy (2008) Ogataea nonfermentans (Wickerham) Kurtzman & Robnett (2010) Ogataea paradorogensis Nakase, Ninomiya, Kawasaki & Limtong (2008) Ogataea philodendri (van der Walt & Scott) Y. Yamada, K. Maeda & Mikata (1994) Ogataea pilisensis (Péter, Tornai-Lehoczki, Fülöp & Dlauchy) Kurtzman & Robnett (2010) Ogataea pini (Holst) Y. Yamada, M. Matsuda, K. Maeda & Mikata (1995) Ogataea polymorpha (Falcão de Morais & Dália Maia) Y. Yamada, K. Maeda & Mikata (1994) Ogataea populialbae Péter, Tornai-Lehoczki & Dlauchy (2009) Ogataea ramenticola (Kurtzman) Kurtzman & Robnett (2010) Ogataea salicorniae (Hinzelin, Kurtzman & M.Th. Smith) Kurtzman & Robnett (2010) Ogataea siamensis (Limtong, Srisuk, Yongmanitchai, H. Kawasaki, Yurimoto, Nakase & N. Kato) Limtong, Srisuk, Yongmanitchai, Yurimoto & Nakase (2008) Ogataea thermomethanolica (Limtong, Srisuk, Yongmanitchai, Yurimoto, Nakase & N. Kato) Limtong, Srisuk, Yongmanitchai, Yurimoto & Nakase (2008) Ogataea trehaloabstinens (Péter, Tornai-Lehoczki, Fülöp & Dlauchy) Nagatsuka, S. Saito & Sugiyama (2008) Ogataea trehalophila (Phaff, M.W. Miller & Spencer) Kurtzman & Robnett (2010) Ogataea wickerhamii (Capriotti) Y. Yamada, M. Matsuda, K. Maeda & Mikata (1995) Ogataea zsoltii (Péter, Tornai-Lehoczki, Fülöp & Dlauchy) Nagatsuka, S. Saito & Sugiyama (2008)

References

Illustrations

Worked examples

Example 1 — a first encounter with Ogataea

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

In research: Ogataea 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 Ogataea 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: Ogataea is common in secondary-school and first-year university syllabi. It links to neighbouring topics Pichiomycetes, Yeasts, Yeasts used in brewing, so understanding it makes those chapters shorter.
In everyday life: Look for Ogataea 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.

How to study Ogataea in 20 minutes

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

Frequently asked questions

What is Ogataea in simple terms?

Ogataea is a genus of ascomycetous yeasts in the family Saccharomycetaceae. It was separated from the former genus Hansenula via an examination of their 18S and 26S rRNA partial base sequencings by Yamada et al. 1994.

Why does Ogataea 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 Ogataea?

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 Ogataea.