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  1. Simulation of the thallus development of antithamnion plumula (ellis) le jolis, (rhodophyceae, ceramiales).J. Lück, H. B. Lück, M.-Th L'Hardy-Halos & C. Lambert - 1999 - Acta Biotheoretica 47 (3-4):329-351.
    The development of the typical cladomothallus of the red algae Antithaminion plumula (Ellis) Le Jolis [= Pterothamnion plumula (Ellis) Nägcli], (Rhodophyceae, Ceramiales) is simulated with the help of a formal language called L-systems. Two types of uniseriate filaments are distinguished: axial filaments of cladomes with indefinite growth and branching and pleuridia with definite growth and branching. The rythmical acropetal formation of secondary axes with basitonic arrangement contrasts with the intercalary basitonic formation of pleuridia, resulting in an acrotonic arrangement within an (...)
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  • Le phenomene d'heteroblastie chez Les vegetaux: Comment l'expliquer?Cécile Lambert, Roger Buis & Marie-Thérèse L'Hardy-Halos - 1995 - Acta Biotheoretica 43 (1-2):67-80.
    Heteroblastic development is often observed in Cormophytae, but it can also be characterized in Thallophytae as shown by the detailed investigation of the development of the algaAntithamnion plumula (Ceramiaceae, Rhodophyta). In this species, heteroblasty concerns (i) dimensional variables (such as pleuridia length and lateral cladome first tagma length) and (ii) variables that characterize the cell growth kinetics (main axis cells). Apex curvature also varies during ontogenesis.The generality of the property in plants led to search for its origin: apical meristem own (...)
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  • Branching, bilateral structures and mitotic crisis in antithamnion plumula.C. Lambert & M.-Th L'Hardy-Halos - 1999 - Acta Biotheoretica 47 (3-4):309-327.
    Plants are considered as archetypes of the ramification phenomenon but numerous elementary processes occur in the elaboration of the shaping of each species. This paper aims to identify the part ascribed to different mechanisms in the morphogenesis of a Thallophyte, the red alga Antihamnion plumula.Agonistic-antagonistic models (Bernard-Weil, 1988) can be applied to this alga whose thallus includes two different kinds of whorls, pleuridian and cladomian. In each whorl the agonistic and antagonistic effects are expressed by the full development (S) of (...)
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  • Caracterisation de la structure d'un processus de croissanceCharacterization of the structure of a growth process.Roger Buis, Marie-Thérèse L'Hardy-Halos & Cécile Lambert - 1996 - Acta Biotheoretica 44 (3):359-375.
    L'analyse d'une cinétique de croissance y est conduite à partir du modèle logistique généralisé de Richards-Nelder. On distingue 2 types de processus dits mono- et multi-logistique. Dans le cas mono-logistique, le phénomène est correctement décrit par une seule fonction logistique. La cinétique de croissance est alors caractérisée par lea propriétés de chacune des phases G 1 à G 4, délimitées par les points singuliers Γmax, V max et Γmin. On appelle structure de croissance la contribution relative de ces différentes phases (...)
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