Výsledky vyhledávání - "Jean-François Lennon"

Double-labelling methods used to diagnose apoptotic and necrotic cell degradations in copepod nauplii

Autor: Jean-François Lennon, Anne Cueff, M. Richer de Forges, Serge A. Poulet

Publikováno v: Marine Biology. 143:889-895

Two double-labelling methods, Tunel+propidium iodide and Annexin V-FITC+propidium iodide, have been tested to diagnose cell degradation processes in N1–N2 nauplius stages produced by spawning females of the copepod Calanus helgolandicus fed either

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::91e96441d1d6d0fedf0e8e15e2af4f78
https://doi.org/10.1007/s00227-003-1142-4

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A nondestructive tool for the measurement of muscle strength in juvenile oysters Crassostrea gigas

Autor: Arnaud Lacoste, Gaëlle Correc, Anne Cueff, Jean-François Lennon, Serge A. Poulet, Fabienne Jalabert, Frédéric Plouvenez

Publikováno v: Aquaculture. 217:49-60

A new tool, designed to measure the adductor muscle strength in juvenile oysters, is described. This instrument has been applied for the evaluation of muscle strength (F) in relation to dry weight of shell-free oysters, longitudinal (d1) and transver

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8f6767229c86b7e7748ccbce9680fe45
https://doi.org/10.1016/s0044-8486(02)00495-7

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Application of a compact automatic sea water sampler to high frequency picoplankton studies

Autor: Stéphan Jacquet, Daniel Vaulot, Jean-François Lennon

Publikováno v: Scopus-Elsevier

This note describes a compact automatic sampler des~gned to collect small water samples (about 3 ml) at high frequency (minutes to hours), which is very useful for marine microbial data acquisition. The devlce consists of a microprocessor card contro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9c1cc8699e6622c9b4fcfa8d3eb92d24
https://doi.org/10.3354/ame014309

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Genome streamlining results in loss of robustness of the circadian clock in the marine cyanobacterium Prochlorococcus marinus PCC 9511

Autor: Jean-François Lennon, Laurence Garczarek, Wolfgang R. Hess, Frédéric Partensky, Daniella Mella, Julia Holtzendorff

Publikováno v: Journal of biological rhythms. 23(3)

The core oscillator of the circadian clock in cyanobacteria consists of 3 proteins, KaiA, KaiB, and KaiC. All 3 have previously been shown to be essential for clock function. Accordingly, most cyanobacteria possess at least 1 copy of each kai gene. O

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b7bb004947a114cb13cbba0d2be4beb
https://pubmed.ncbi.nlm.nih.gov/18487411

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Short-timescale variability of picophytoplankton abundance and cellular parameters in surface waters of the Alboran Sea (western Mediterranean)

Autor: Louis Prieur, Jean-François Lennon, Carol Avois-Jacquet, Daniel Vaulot, Stéphan Jacquet

Publikováno v: Journal of Plankton Research
Journal of Plankton Research, 2002, 24 (7), pp.635-651. ⟨10.1093/plankt/24.7.635⟩
Journal of Plankton Research, Oxford University Press (OUP), 2002, 24 (7), pp.635-651
HAL
Scopus-Elsevier

International audience; The Alboran Sea (western Mediterranean) is characterized by a well-defined hydrological structure, the Almeria (Spain)-Oran (Algeria) geostrophic front. During the Almofront-2 cruise (November 22, 1997 to January 18, 1998), hi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::07e8820931cb8cb5425340b0868a805a
https://hal.science/hal-03506691

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Morphology and behaviour of dinoflagellate chromosomes during the cell cycle and mitosis

Autor: Marie-Odile Soyer-Gobillard, Delphine Guillebault, Hervé Moreau, Yvonne Bhaud, Jean-François Lennon, Hélène Defacque

Publikováno v: Journal of cell science. 113

The morphology and behaviour of the chromosomes of dinoflagellates during the cell cycle appear to be unique among eukaryotes. We used synchronized and aphidicolin-blocked cultures of the dinoflagellate Crypthecodinium cohnii to describe the successi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::47a2819d3fda825423f3fd8784f22c38
https://pubmed.ncbi.nlm.nih.gov/10704374

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DIEL PATTERNS OF GROWTH AND DIVISION IN MARINE PICOPLANKTON IN CULTURE

Autor: Frédéric Partensky, Stéphan Jacquet, Daniel Vaulot, Jean-François Lennon

Publikováno v: Journal of Phycology. 37:357

The effect of a 12:12-h light:dark (LD) cycle on the phasing of several cell parameters was explored in a variety of marine picophytoplanktonic strains. These included the photosynthetic prokaryotes Prochlorococcus (strains MED 4, PCC 9511, and SS 12

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4a1b32e132db0e6d14c936c639e6f4cd
https://doi.org/10.1046/j.1529-8817.2001.037003357.x

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Chaos dans les rythmes biologiques des organismes de la zone des marées

Autor: A. Clique, Jean-François Lennon

Publikováno v: Annales des Télécommunications. 42:339-346

Les auteurs expliquent l’apparition de phenomenes chaotiques dans les rythmes biologiques des organismes de la zone des marees par le fait qu’ils possedent deux systemes d’horloges endogenes, dont les frequences sont du meme ordre : l’un circ

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https://doi.org/10.1007/bf02995253

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Picoplankton population dynamics in coastal waters of the northwestern Mediterranean sea

Autor: Jean-François Lennon, Dominique Marie, Stéphan Jacquet, Daniel Vaulot

Publikováno v: Scopus-Elsevier

High-frequency sampling of surface picoplanktonic populations was performed in Villefranche Bay (northwestern Mediterranean Sea) during the first week of July 1996. The evolution of abundance and cell parameters were monitored once per hour by flow c

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http://www.scopus.com/inward/record.url?eid=2-s2.0-0032443771&partnerID=MN8TOARS

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Ultraviolet stress delays chromosome replication in light/dark synchronized cells of the marine cyanobacterium Prochlorococcus marinus PCC9511

Autor: Christian Kolowrat, Xavier Lecomte, Nicolas Blot, Jean-François Lennon, Daniella Mella-Flores, Frédéric Partensky, David M. Kehoe, Martial Ferréol, Morgane Ratin, Priscillia Gourvil, Christophe Boutte, Gildas Le Corguillé, Laurence Garczarek

Publikováno v: BMC Microbiology
BMC Microbiology, 2010, 10, pp.204. ⟨10.1186/1471-2180-10-204⟩
BMC Microbiology, BioMed Central, 2010, 10, pp.204. ⟨10.1186/1471-2180-10-204⟩
BMC Microbiology, Vol 10, Iss 1, p 204 (2010)

Background The marine cyanobacterium Prochlorococcus is very abundant in warm, nutrient-poor oceanic areas. The upper mixed layer of oceans is populated by high light-adapted Prochlorococcus ecotypes, which despite their tiny genome (~1.7 Mb) seem to

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