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The Azolla-Anabaena Symbiosis: Basic Biology
TLDR
Article de synthese sur la symbiose entre Azolla et Anabaena, sa perpetuation sur l'interaction plante-microorganisme et son interet en tant que biofertiliseur dans the culture du riz.
The Azolla, Anabaena azollae Relationship: I. Initial Characterization of the Association.
TLDR
A comparison of the chlorophyll a and b content of Azolla fronds with and without the symbiotic alga resulted in an estimate that in the symbiotics association, the Anabaena azollae accounts for from 7.5 to 15% of the total chlorophyLL.
Phylogenetic Relationships in the Heterosporous Fern Genus Azolla (Azollaceae) Based on DNA Sequence Data from Three Noncoding Regions
TLDR
DNA sequence data confirm the division of Azolla into two major clades, corresponding to the traditional classification of the genus into sections Azolla and Rhizosperma and the monophyly of A. pinnata plus A. nilotica contradicts newer classifications of the family.
The Azolla-Anabaena azollae relationship
TLDR
DCMU inhibited the acetylene reducing capacity of algae isolated from dark pretreated fronds more rapidly and to a greater extent than that in alga isolated from light pretreatedfronds.
Azolla-Anabaena Relationships: VII. Distribution of Ammonia-assimilating Enzymes, Protein, and Chlorophyll between Host and Symbiont.
The N(2)-fixing Azolla-Anabaena symbiotic association is characterized in regard to individual host and symbiont contributions to its total chlorophyll, protein, and levels of ammonia-assimilating
Ultrastructural ontogeny of leaf cavity trichomes inAzolla implies a functional role in metabolite exchange
TLDR
The timing of transfer cell differentiation, considered together with information from other studies, suggests that branched hairs may be involved in exchange of fixed nitrogen between the symbionts, while simple hairs may participate in Exchange of fixed carbon from Azolla to Anabaena.
Characterization of the pigments in reaction center preparations from Rhodopseudomonas spheroides.
TLDR
The absorption spectra and magnesium content of both intact preparations and organic extracts as well as thin layer chromatography of the extracts indicate that the pigment complex of the reaction center contains both bacteriopheophytin a and bacteriochlorophyll a.
The Azolla, Anabaena azollae Relationship: II. Localization of Nitrogenase Activity as Assayed by Acetylene Reduction.
TLDR
This study shows that the alga is the agent of acetylene reduction and suggests that there is considerable transport of metabolites between the fern and the blue-green alga.
The Azolla-Anabaena azollae Relationship : XII. Nitrogenase Activity and Phycobiliproteins of the Endophyte as a Function of Leaf Age and Cell Type.
TLDR
Findings indicate that the phycobiliprotein complement of the vegetative cell precursor is retained in the heterocysts of the endophyte, similar to that of vegetative cells.
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