biology

Mark Andrew Estelle

Mark Andrew Estelle 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 Mark Andrew Estelle rather than just read about it. In short: Mark Andrew Estelle is a Canadian-American biologist known for his work elucidating the mechanism of the plant hormone, auxin using the model plant Arabidopsis thaliana. He is currently a Distinguished Professor at University of California San Diego.

Key takeaways

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

Reference excerpt

Mark Andrew Estelle is a Canadian-American biologist known for his work elucidating the mechanism of the plant hormone, auxin using the model plant Arabidopsis thaliana. He is currently a Distinguished Professor at University of California San Diego.

Life and career

Early life Mark Andrew Estelle was born in Calgary Alberta, Canada in 1955. His undergraduate and graduate education emphasized genetic approaches to problems, regardless of species or organism which helped him develop a broad view of approaching scientific investigation.

Education Estelle earned his BS. degree at University of Alberta B.S. in 1978. He earned his Ph.D. in genetics from the University of Alberta in 1983. His doctoral research involved the fruit fly and was entitled "The analysis of a dopa decarboxylase activity variant in Drosophila melanogaster". Estelle continued his scientific training as a research associate of the Michigan State University-U.S. Department of Energy Plant Research Laboratory with Dr. Chris R. Somerville (1983–86). In 1986, he was hired as an assistant professor at Indiana University and eventually became the Indiana University Miller Chair in Plant Developmental Biology 2002–2008. He later moved his research lab to the University of California San Diego as a Distinguished Professor, Department of Cellular and Developmental Biology 2008–present.

Research areas Estelle's laboratory utilizes the plant Arabidopsis thaliana to identify auxin response pathways. His group determined that auxin response depends on the degradation of transcriptional repressors called the Aux/IAA proteins with requires the ubiquitin protein ligase E3 called SCFTIR1.

Recognition HHMI investigator 2011-2018 American Association for Advancement of Science 2003 National Academy of Science 2007 Anton Lang Memorial Lecture MSU-DOE Plant Research Laboratory 2007 Woolhouse Lecture John Innes Center Norwich UK 2011 Pioneer Member of American Society of Plant Biologists 2023 Recipient of the Martin Gibbs Medal from the American Society of Plant Biologists (2025) Recipient the Philip N. Benfey Arabidopsis Community Lifetime Achievement Award for his foundational work in the auxin field

See also History of research on Arabidopsis thaliana Interview on NPR

References

Worked examples

Example 1 — a first encounter with Mark Andrew Estelle

Start with the simplest possible case. Write down what Mark Andrew Estelle 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 Mark Andrew Estelle 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 Mark Andrew Estelle 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 Mark Andrew Estelle

In research: Mark Andrew Estelle 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 Mark Andrew Estelle 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: Mark Andrew Estelle is common in secondary-school and first-year university syllabi. It links to neighbouring topics Canadian biologists, Living people, University of California, San Diego faculty, so understanding it makes those chapters shorter.
In everyday life: Look for Mark Andrew Estelle 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 Mark Andrew Estelle in 20 minutes

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

Frequently asked questions

What is Mark Andrew Estelle in simple terms?

Why does Mark Andrew Estelle 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 Mark Andrew Estelle?

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 Mark Andrew Estelle.