astronomy

Marie-Agnès Letrouit-Galinou

Marie-Agnès Letrouit-Galinou is a astronomy 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 Marie-Agnès Letrouit-Galinou rather than just read about it. In short: Marie-Agnès Letrouit-Galinou (née Galinou; born 1931) is a French botanist, mycologist, and lichenologist, known for her contribution to revolutionizing the scientific understanding of ascomycete development and classification. Education and career After secondary education at the Lycée de Jeunes Filles in Rennes, Marie-Agnès Galinou graduated in 1951 with her undergraduate degree from the Faculty des Sciences of th…

Key takeaways

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Reference excerpt

Marie-Agnès Letrouit-Galinou (née Galinou; born 1931) is a French botanist, mycologist, and lichenologist, known for her contribution to revolutionizing the scientific understanding of ascomycete development and classification.

Education and career After secondary education at the Lycée de Jeunes Filles in Rennes, Marie-Agnès Galinou graduated in 1951 with her undergraduate degree from the Faculty des Sciences of the University of Rennes. She married in the mid-1950s and changed her surname to Letrouit-Galinou. She received in 1958 her doctorate from the University of Paris with a doctoral thesis on the comparative anatomy and ontogeny of discolichen ascomata, i.e. those lichenized ascomycetes in which the fruiting body has a rounded or oval shape like a disc. Her doctoral supervisor was Marius Chadefaud. David L. Hawksworth refers her as one of Chadefaud's "gang of four" — consisting of her with André Bellemère, Marie-Claude Janex-Favre, and Agnès Jarguey-Leduc. Under Chadefaud's influence, the four showed that "the then dominating Nannfeldt-Luttrell views of ascomycete development and classification were unsound." By the mid-1970s electron microscopic studies confirmed their research. In the early part of her career she worked at Rennes with Henry Nicollon des Abbayes and was strongly influenced by him in her study of lichen systematics and ecology. She published in 1958 an outstanding monograph on the genus Laurera. Later in her career she did research on the effects of air pollution on lichens and stimulated other French lichenologists to do such research. She worked in Paris for the CNRS for many years. In 1976 she was one of the main founders of the Association Française de Lichénologie, served as the Association's first vice-president, and then served as the Association's second president from 1978 to 1980. In 1993 she worked closely with Hawksworth in planning NATO's Advanced Research Workshop on "Ascomycete Systematics" held in Paris. The Workshop was a big success with 140 researchers from 24 countries. At the "Ascomycete Systematics" Workshop the lichenological "gang of four" presented a summary of their now famous results and the concepts introduced by Chadefaud. Letrouit-Galinou not only promoted lichenology in France, but also did her research with extremely limited financial resources. She and her collaborators had to work with quite inexpensive microscopes. The three women of the "gang of four" painted the walls of their laboratory because they had no funds to hire professional wall painters. When she retired in August 1999 from the CNRS, she donated her library to the Muséum national d'histoire naturelle.

Selected publications Chadefaud, M.; Galinou, M. A. (1953). "Sur l'aque des lichens du genre Pertusaria et son importance phylogénétique". Comptes Rendus de l'Académie des Sciences, Série D. 237: 1178–1180. Letrouit-Galinou, Marie-Agnès (1968). "The Apothecia of the Discolichens". The Bryologist. 71 (4): 297–327. doi:10.1639/0007-2745(1968)71[297:TAOTD]2.0.CO;2. JSTOR 3241116. Letrouit-Galinou, Marie-Agnès (1973). "Sexual Reproduction". The Lichens. pp. 59–90. doi:10.1016/B978-0-12-044950-7.50007-6. ISBN 9780120449507. Letrouit-Galinou, Marie-Agnes (1973). "Les Asques des Lichens et le type archaeascé". The Bryologist. 76 (1): 30–47. doi:10.2307/3241230. ISSN 0007-2745. JSTOR 3241230. Bellemère, A.; Letrouit-Galinou, M. A. (1981). "The Lecanoralean ascus: an ultrastructural preliminary study". Ascomycete Systematics. Springer Series in Microbiology. New York, NY: Springer. pp. 54–70. doi:10.1007/978-1-4612-5844-5_5. ISBN 978-1-4612-5846-9. Galun, Margalith, ed. (1988). "Chapter 5 (part A). Asci, Ascospore, and Ascomata by André Bellemère and Marie Agnes Letrouit-Gallinou". CRC Handbook of Lichenology. Vol. 2. CRC Press. pp. 161–180. ISBN 0-8493-3582-5. Seaward, M. R. D.; Letrouit-Galinou, M. A. (1991). "Lichen Recolonization of Trees in the Jardin du Luxembourg, Paris". The Lichenologist. 23 (2): 181–186. doi:10.1017/S0024282991000324. ISSN 0024-2829. S2CID 86084578. Galsomiès, L; Ayrault, S; Carrot, F; Deschamps, C; Letrouit-Galinou, M.A (2003). "Interspecies calibration in mosses at regional scale—heavy metal and trace elements results from Ile-de-France". Atmospheric Environment. 37 (2): 241–251. Bibcode:2003AtmEn..37..241G. doi:10.1016/S1352-2310(02)00831-2. ISSN 1352-2310.

Eponyms

Family Letrouitiaceae Bellem. & Hafellner (1982)

Genus Letrouitia Bellem. & Hafellner (1982)

References

External links Data related to Marie-Agnès Letrouit-Galinou at Wikispecies

Worked examples

Example 1 — a first encounter with Marie-Agnès Letrouit-Galinou

Start with the simplest possible case. Write down what Marie-Agnès Letrouit-Galinou claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, 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 Marie-Agnès Letrouit-Galinou 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 Marie-Agnès Letrouit-Galinou 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 Marie-Agnès Letrouit-Galinou

In research: Marie-Agnès Letrouit-Galinou appears in astronomy 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 Marie-Agnès Letrouit-Galinou 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: Marie-Agnès Letrouit-Galinou is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1931 births, 20th-century French women scientists, 21st-century French women scientists, so understanding it makes those chapters shorter.
In everyday life: Look for Marie-Agnès Letrouit-Galinou 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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Frequently asked questions

What is Marie-Agnès Letrouit-Galinou in simple terms?

Why does Marie-Agnès Letrouit-Galinou matter?

Because it connects several astronomy 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 Marie-Agnès Letrouit-Galinou?

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 Marie-Agnès Letrouit-Galinou.