Results 171 to 180 of about 33,070 (223)

Cyanobacteria Under UV Radiation: General Insights into Stress Responses. [PDF]

Int J Mol Sci
Mazur Z, Ślesak I.
europepmc   +1 more source

Comprehensive Study of Some Cyanobacteria in Moscow Waterbodies (Russia), Including Characteristics of the Toxigenic <i>Microcystis aeruginosa</i> Strains. [PDF]

Toxins (Basel)
Kezlya E, Mironova E, Chernova E, Gololobova M, Mironov A, Voyakina E, Maltsev Y, Snarskaya D, Kulikovskiy M.   +8 more
europepmc   +1 more source

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The pattern of development of Anabaena in the Azolla-Anabaena symbiosis

Planta, 1975
The development of Anabaena in the leaf cavities of Azolla (probably A. filiculoides) was studied. After the alga is installed in the cavity, heterocyst frequency rises to a maximum (20-30%) about 12 leaves from the apex, then remains constant until the leaf senesces.
exaly   +3 more sources

Heterocyst development in Anabaena

Current Opinion in Microbiology, 2003
Many filamentous nitrogen-fixing cyanobacteria protect nitrogenase from oxygen in differentiated cells called heterocysts. Heterocyst development is controlled by the availability of nitrogen compounds in the environment and by intrinsic factors that regulate the frequency and pattern of heterocysts along vegetative cell filaments.
James W, Golden, Ho-Sung, Yoon
openaire   +2 more sources

Heterocyst formation in Anabaena

Current Opinion in Microbiology, 1998
Heterocystous cyanobacteria grow as multicellular organisms with a distinct one-dimensional developmental pattern of single nitrogen-fixing heterocysts separated by approximately ten vegetative cells. Several genes have been identified that are required for heterocyst development and pattern formation.
J W, Golden, H S, Yoon
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Localization of Nitrogen Fixation in Anabaena

Nature, 1971
THE function of heterocysts in blue-green algae has been controversial for some time; there are indications that these enlarged cells are the site of nitrogen fixation1,2. But non-heterocystous blue-green algae may fix nitrogen if grown under low oxygen tension3, so that heterocysts are not essential for nitrogen fixation in these algae. According to a
H J, van Gorkom, M, Donze
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Activation of sulphate in Anabaena cylindrica

Planta, 1976
Crude cell-free extracts of Anabaena cylindrica synthesized adenosine-5'-phosphosulphate (AP(35)S) and 3'-phosphoadenosine-5'-phosphosulphate (PAP(35)S) from (35)SO4 (2-) in the presence of Mg(2+), ATP and inorganic pyrophosphatase. Maximum AP(35)S and PAP(35)S were produced at pH 7.15 and 8.05, respectively.
S K, Sawhney, D J, Nicholas
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Hoeflea anabaenae sp. nov., an epiphytic symbiont that attaches to the heterocysts of a strain of Anabaena

International Journal of Systematic and Evolutionary Microbiology, 2011
The heterotrophic, epiphytic, symbiotic bacterial strain WH2KTwas previously isolated from a two-member culture in which it was attached to the heterocysts of a strain ofAnabaena(SSM-00). Analysis of its 16S rRNA gene sequence demonstrated that the symbiont was most closely related to the type strain ofHoeflea marina(96.9 % similarity), which belongs ...
Bradley S, Stevenson, Michael T, Suflita, Blake W, Stamps, Edward R B, Moore, Crystal N, Johnson, Paul A, Lawson   +5 more
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The Roles of Anabaena Azollae in Anabaena-Azolla Association

1991
The roles of Anabaena in the symbiosis were studied by using Azolla strains with heterologous Anabaena azollae or without Anabaena. As a symbiont, Anabaena has a strong effect on the performances of Azolla either tolerance to high temperature or low temperature. Anabaena changed the absorption pattern of mineral nutrients of Azolla from the medium. The
Cang Lin, Y. D. Yang, X. L. Zhang, C. C. Liu   +3 more
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Antigenic Analysis of Anabaena Azollae and Presence of Lectin in Azolla-Anabaena Association

1984
Azolla has worldwide distribution and is represented by six recognizable species. The algal symbiont belongs to the Nostocaceae and generally referred to as A. azollae. It is not clear whether the symbiont is the same in the various Azolla species and specimens or if there are several strains of the symbiont.
J. K. Ladha, I. Watanabe
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