Morphological Aspects of Symbiosis

  title={Morphological Aspects of Symbiosis},
  author={Paul Nardon and Hubert Charles},
HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignement et de recherche français ou… 

Coevolution of partners and integrity of symbiotic systems

It is demonstrated that the functional integrity of N2-fixing legume-rhizobium symbiosis (concordance of the changes in the genotypic frequencies of the partners induced by environmental fluctuations) correlates with its ecological efficiency, which is increased by natural selection.

Genetic and molecular basis of symbiotic adaptations

The population and molecular mechanisms of symbiotic adaptations contributing to the structural, functional, and genetic integration of nonrelated organisms and the pangenesis hypothesis, proposed by Ch.

A community perspective on the concept of marine holobionts: current status, challenges, and future directions

It is proposed that one significant challenge is to bridge cross-disciplinary research on tractable model systems in order to address key ecological and evolutionary questions and to account for the holobiont concept in applied areas.

Eukaryotic ectosymbionts of Acari

A number of described cases of fungal and protist ectosymbionts are introduced and the role they might play in the life of their acarine hosts are discussed.

Rôle de l'espèce ingénieure Upogebia pusilla dans le fonctionnement biogéochimique des écosystèmes intertidaux à herbier (Zostera noltei) du bassin d'Arcachon

Dans le bassin d’Arcachon, le crustace thalassinide Upogebia pusilla habite preferentiellement les vasieres intertidales colonisees par les zosteres naines (Zostera noltei) ou il trouve la stabilite

Symbiosis - Wikipedia, the free encyclopedia

  • Environmental Science
The term symbiosis (from the Greek: σύν syn "with"; and βίωσις biosis "living") commonly describes close and often long-term interactions between different biological species. The term was first used

Microorganisms and Biotic Interactions

A better understanding of biotic interactions is needed to develop microbe-based ecological engineering strategies for environmental sustainability and conservation, to improve environment-friendly approaches for feed and food production, and to address health challenges posed by infectious diseases.

The ascidian-associated mysid Corellamysis eltanina gen.nov., sp.nov. (Mysida, Mysidae, Heteromysinae): a new symbiotic relationship from the Southern Ocean.

The new mysid, Corellamysis eltanina, is characterized by the globular eyes lacking definite eyestalks, the seven and eighth thoracic endopods specialized as gnathopods forming a strong subchela, and by the armature and shape of the uropod endopod and telson.

Sitophilus oryzae L : A model for intracellular symbiosis in the Dryophthoridae weevils (Coleoptera)

Bacterial intracellular symbiosis in the weevil Sitophilus spp. was discovered in 1927 and since then has been studied by several authors through many approaches. This has led to a deep

Ovogenèse et transmission des bactéries symbiotiques chez le charançon Sitophilus oryzae L. (Coleoptera: Curculionoidea)

The weevil Sitophilus oryzae and some other Coleoptera share intracellular symbiosis with hereditary Gram-negative bacteria (or endocytobiotes) and oogenesis and transmission of symbiotic bacteria in the weevil is better described.




This work considers the secondary acquisition of photosynthesis due to symbiosis with cyanobacteria, zoochlorellae and zooxanthellae, which occur in several sponges and induces relevant morphological and physiological adaptations in the sponge.

Le trophosome de Riftia pachyptila et Tevnia jerichonana (Vestimentifera) : bioaccumulations métalliques et métabolisme du soufre

L'etude ultrastructurale et microanalytique du trophosome des vestimentiferes montre que les importantes quantites de soufre que renferme cet organe ne sont pas sous forme de globules, comme cela


The ultrastructure of chloroplasts in the frond of Codium fragile and in symbiotic association with the digestive cells of Elysia viridis is described and the possibility that‘butterfly’shaped chloroplAST and chloroplast with membranous baffles represent different forms of chloroplast division is discussed.

Cell to Cell Interactions in Insect Endocytobiosis

In insects, despite the rare investigations at the cellular and molecular levels, it may be assumed that endocytobiotes are perfectly integrated into the host metabolism and homeostasis.

Consequences of evolving with bacterial symbionts : Insights from the squid-vibrio associations

▪ Abstract The squid-vibrio light-organ symbioses, which have been under investigation for just over 10 years, offer the opportunity to decipher aspects of the dynamics of stable associations between

Lessons from a cooperative, bacterial-animal association: the Vibrio fischeri-Euprymna scolopes light organ symbiosis.

  • E. Ruby
  • Biology
    Annual review of microbiology
  • 1996
This review examines a model system for the study of the light organ association between the bobtail squid Euprymna scolopes and the marine luminous bacterium V. fischeri, and describes the initiation, establishment, and persistence of the benign bacterial infection of the juvenile host light organ.

Anatomy, cytology and symbiotic bacteria of four Mediterranean species of Plakina Schulze, 1880 (Demospongiae, Homosclerophorida)

The internal anatomy, cytology and symbiotic bacteria of four Mediterranean species of the sponge genus Plakina Schulze are investigated under light and transmission electron microscopy in a search for new, taxonomically useful characters.

Change of Cellular “Pathogens” into Required Cell Components a

  • K. Jeon
  • Biology
    Annals of the New York Academy of Sciences
  • 1987
The present model of amebabacteria symbiosis is an exception in that its history is known and the development of a host’s dependence on symbionts can be readily reproduced under experimental conditions.

Symbiosis of Plants and Microbes

An overview: the meaning of plant and microbe symbioses and the endosymbiont theory of evolution of chloroplasts and mitochondria. Specific associations between micro-organisms and plants. The