Cyanobacterial Culture Acts as Good Organic  Biostimulant on Anethum graveolens

Spices are a part of the plants used for many purposes as preservatives and as colorants in foods or as medicinal intention. Main aim of the present research was to estimate the potential antimicrobial activity of some spices from Apiaceae family such as Amni visnaga (Diş otu, Hıltan), Anethum graveolens (Dereotu), Apium graveolens (Kereviz), Coriandrum sativum (Kişniş), Cuminum cyminum (Kimyon), Daucus carota (Havuç), Foeniculum vulgare (Rezene), Petroselinum sativum (Maydanoz), Pimpinella anisum (Anason). Thus, the fruits of the plants are used in the experiments. The fruits have been extracted by n-hexane, and all extracts have been subjected to TLC (Thin Layer Chromatography). The n-hexane extracts were screened for their potential in vitro antibacterial activity against Staphylococcus aureus ATCC 29213, Enterococcus faecalis ATCC 29212, Escherichia coli ATCC 25922, Klebsiella pneumoniae ATCC 13883, Pseudomonas aeruginosa ATCC 27853 and antifungal activity against Candida albicans ATCC 10231 by microbroth dilution method. The hexane extracts of the fruits of Coriandrum sativum, Anethum graveolens, Daucus carota, and Pimpinella anisum did not show antimicrobial activity against tested microorganisms. Except these, the other extracts having MIC values of 2.5-5-10 mg/mL exhibited antimicrobial effect against some tested microorganisms. These results demonstrate that the extracts which have an antimicrobial effect can probably play a role as an antimicrobial agent owing to their nonpolar components which are accumulated to the n-hexane extracts.

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First record of the soil cyanobacterium Nodosilinea epilithica (Synechococcales, Cyanobacteria) in Russia

Novosti sistematiki nizshikh rastenii ◽

10.31111/nsnr/2016.50.125 ◽

2016 ◽

Vol 50 ◽

pp. 125-141

Author(s):

A. D. Temraleeva ◽

S. A. Dronova

Keyword(s):

Chestnut Soil ◽

First Record ◽

Molecular Analyses ◽

Dry Steppes ◽

Cyanobacterial Culture ◽

Volgograd Region ◽

First Time

Nodosilinea epilithica Perkerson et Casamatta is reported for the first time for Russia. The sample was isolated from a typical chestnut soil in the zone of dry steppes (Volgograd Region) and its identity was confirmed by morphological and molecular analyses. The specific feature of the studied strain is its ability to form nodules at normal (60–75 μmol photons ∙ m-2 ∙ sec-1) light. The number of nodules is supposed to be related to the age of a cyanobacterial culture.

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Dissipation kinetics and processing behavior of boscalid and pyraclostrobin in greenhouse dill plant ( Anethum graveolens L.) and soil

Pest Management Science ◽

10.1002/ps.6379 ◽

2021 ◽

Author(s):

Magdalena Jankowska ◽

Piotr Kaczyński ◽

Bożena Łozowicka

Keyword(s):

Anethum Graveolens ◽

Dissipation Kinetics

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The Role of Selected Wavelengths of Light in the Activity of Photosystem II in Gloeobacter violaceus

International Journal of Molecular Sciences ◽

10.3390/ijms22084021 ◽

2021 ◽

Vol 22 (8) ◽

pp. 4021

Author(s):

Monika Kula-Maximenko ◽

Kamil Jan Zieliński ◽

Ireneusz Ślesak

Keyword(s):

Photosystem Ii ◽

Spectral Composition ◽

Photosynthetic Electron Transport ◽

Metabolic Energy ◽

Light Conditions ◽

Gloeobacter Violaceus ◽

Transport Chain ◽

Cyanobacterial Culture ◽

Photosynthetic Antennas

Gloeobacter violaceus is a cyanobacteria species with a lack of thylakoids, while photosynthetic antennas, i.e., phycobilisomes (PBSs), photosystem II (PSII), and I (PSI), are located in the cytoplasmic membrane. We verified the hypothesis that blue–red (BR) light supplemented with a far-red (FR), ultraviolet A (UVA), and green (G) light can affect the photosynthetic electron transport chain in PSII and explain the differences in the growth of the G. violaceus culture. The cyanobacteria were cultured under different light conditions. The largest increase in G. violaceus biomass was observed only under BR + FR and BR + G light. Moreover, the shape of the G. violaceus cells was modified by the spectrum with the addition of G light. Furthermore, it was found that both the spectral composition of light and age of the cyanobacterial culture affect the different content of phycobiliproteins in the photosynthetic antennas (PBS). Most likely, in cells grown under light conditions with the addition of FR and G light, the average antenna size increased due to the inactivation of some reaction centers in PSII. Moreover, the role of PSI and gloeorhodopsin as supplementary sources of metabolic energy in the G. violaceus growth is discussed.

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