نتایج جستجو برای: heterocystus cyanobacteria

تعداد نتایج: 10937  

2017
Juline M. Walter Felipe H. Coutinho Bas E. Dutilh Jean Swings Fabiano L. Thompson Cristiane C. Thompson

Cyanobacteria are major contributors to global biogeochemical cycles. The genetic diversity among Cyanobacteria enables them to thrive across many habitats, although only a few studies have analyzed the association of phylogenomic clades to specific environmental niches. In this study, we adopted an ecogenomics strategy with the aim to delineate ecological niche preferences of Cyanobacteria and...

2017
Chengjie Yin Longgen Guo Chunlong Yi Congqiang Luo Leyi Ni

In order to control cyanobacteria blooms with silver carp in Lake Taihu, an in situ experiment was carried out by stocking silver carp at a biomass of 35, 70, and 150 g m-3 and no carp control in waterproof enclosures. Physicochemical water parameters and biomass of plankton were measured in enclosures to evaluate the suitable stocking density of silver carp for relieving internal nutrients and...

2001
Gerardo Toledo Yoav Bashan

Nitrogen fixation and colonization by associative cyanobacteria in the aerial roots (pneumatophores) of black mangrove trees was evaluated in situ at Balandra lagoon, Baja California Sur, Mexico, for 18 consecutive months. Year-round vertical zonation of cyanobacterial colonization was determined along the pneumatophores. The bottom part close to the sediment was colonized mainly by nonheterocy...

Journal: :Applied sciences 2022

Nowadays, microalgae and cyanobacteria have become a promising sustainable source of useful products, thanks to their richness in bioactive metabolites high value (antibiotics, toxins, pharmaceutically active compounds, plant growth regulators, others). These photoautotroph microorganisms generate biomass using photosynthesis. This review, which distinguishes Cyanobacteria, often called blue-gr...

Journal: :Microbiology 2009
Maria Filomena Macedo Ana Zélia Miller Amélia Dionísio Cesareo Saiz-Jimenez

The presence and deteriorating action of micro-organisms on monuments and stone works of art have received considerable attention in the last few years. Knowledge of the microbial populations living on stone materials is the starting point for successful conservation treatment and control. This paper reviews the literature on cyanobacteria and chlorophyta that cause deterioration of stone cultu...

Journal: :Scientific reports 2016
Xiaodong Jiang Han Gao Lihua Zhang Huishuang Liang Xiao Zhu

Evolutionary adaptation could assist organisms to cope with environmental changes, yet few experimental systems allow us to directly track evolutionary trajectory. Using experimental evolution, evolutionary tolerance to Microcystis aeruginosa was investigated in two cladocerans (Daphnia pulex and Simocephalus vetulus) to test the hypothesis that cladoceran grazers rapidly adapt to toxic cyanoba...

Journal: :Chemico-biological interactions 2013
Julia Kleinteich Susanna A Wood Jonathan Puddick David Schleheck Frithjof C Küpper Daniel Dietrich

Cyanobacteria are the predominant phototrophs in freshwater ecosystems of the polar regions where they commonly form extensive benthic mats. Despite their major biological role in these ecosystems, little attention has been paid to their physiology and biochemistry. An important feature of cyanobacteria from the temperate and tropical regions is the production of a large variety of toxic second...

2012
Tomasz Tarko

Tarko T., Duda-Chodak A., Kobus M. (2012): Influence of growth medium composition on synthesis of bioactive compounds and antioxidant properties of selected strains of Arthrospira cyanobacteria. Czech J. Food Sci., 30: 258–267. We studied how the selection of the growth medium influences the antioxidant properties and synthesis of bioactive compounds (β-carotene, C-phycocyanin, allophycocyanin,...

2017
Masahiro Misumi Kintake Sonoike

Glaucophytes are primary symbiotic algae with unique plastids called cyanelles, whose structure is most similar to ancestral cyanobacteria among plastids in photosynthetic organisms. Here we compare the regulation of photosynthesis in glaucophyte with that in cyanobacteria in the aim of elucidating the changes caused by the symbiosis in the interaction between photosynthetic electron transfer a...

2016
Jay Shankar Singh Arun Kumar Amar N. Rai Devendra P. Singh

Keeping in view, the challenges concerning agro-ecosystem and environment, the recent developments in biotechnology offers a more reliable approach to address the food security for future generations and also resolve the complex environmental problems. Several unique features of cyanobacteria such as oxygenic photosynthesis, high biomass yield, growth on non-arable lands and a wide variety of w...

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