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Caractérisation des communautés bactériennes épiphytes de frondes de Laminaria digitata et de débris résultant de leur fragmentation = Characteristics of the bacterial communities of the frond of Laminaria digitata and study of the macroscopic fragments naturally separated from the thallus
Corre, S.; Prieur, D.; Chamroux, S.; Floc'h, J.-Y. (1989). Caractérisation des communautés bactériennes épiphytes de frondes de Laminaria digitata et de débris résultant de leur fragmentation = Characteristics of the bacterial communities of the frond of Laminaria digitata and study of the macroscopic fragments naturally separated from the thallus. Cah. Biol. Mar. 30(1): 115-130
In: Cahiers de Biologie Marine. Station Biologique de Roscoff: Paris. ISSN 0007-9723, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Corre, S.
  • Prieur, D.
  • Chamroux, S.
  • Floc'h, J.-Y.

Abstract
    Algal samples from different parts of the frond of Laminaria digitata (young, adult and aged tissues) and from macroscopic fragments naturally separated from the thallus were collected on the Atlantic coast of France (Brittany) during winter and spring. Bacterial communities associated with the different levels were compared and ATP content determined, as an indicator of the physiological state of the tissues. The observations have been correlated to the progression of stipofrondal new tissue along the frond. Bacterial colonization on deteriorated tissues may be due to a leakage of dissolved organic compounds during erosion of the distal part of the frond; on the other hand, the colonization of healthy surfaces could depend on algal physiology (production of tissue and seasonal variations of mucilage specific compounds).

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