Microcystis viridis ve Aphanizomenon gracile Karışık Kültürün Fiğ, Nohut ve Arpa Gelişimine Etkileri

2018 ◽

Vol 53 (4) ◽

pp. 543-549

Author(s):

Andrea Vidaurre ◽

Florencia S Alvarez Dalinger ◽

Liliana B Moraña ◽

María M. Salusso

Keyword(s):

Cylindrospermopsis Raciborskii ◽

Aphanizomenon Gracile

El embalse Limón se ha convertido en la principal fuente de agua potable para el 80% de la población del norte de la provincia de Salta (22° 05’47,90’’S-63° 44’ 19,48’’ W). Al presente, no existe información sistematizada de las algas del fitoplancton presentes en esta presa. Se analizaron 19 muestras del período 2013-2015 en ambas fases del ciclo hidrológico, según técnicas estandarizadas, con el objeto de evaluar la representatividad de cianobacterias potencialmente tóxicas en Limón y su importancia relativa en el fitoplancton. Existió un predominio de cianobacterias, con un incremento interanual significativo, siendo éstas más abundantes en los estiajes, con un promedio de 110.160 células en 2015, con predominio de Cylindrospermopsis raciborskii y Raphidiopsis mediterranea (75.027 y 170.000 células/ml). Entre las especies con potencial toxicogénico se destacaron por sus densidades Anabaenopsis elenkinii, Aphanizomenon gracile, Aphanocapsa annulata, Coelomoron tropicale, Chroococcus dispersus, C. raciborskii, Microcysis flos-aquae, Planktolyngbia limnetica, Pseudanabaena limnetica, R. mediterránea y R. curvata. La representatividad del grupo dentro del fitoplancton fue superior al 70 %. Se concluye que el cuerpo de agua es un ambiente de riesgo y debe ser monitoreado permanentemente para su empleo para agua de consumo humano.

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Microviridin. A novel tricyclic depsipeptide from the toxic cyanobacterium Microcystis viridis

Journal of the American Chemical Society ◽

10.1021/ja00178a060 ◽

1990 ◽

Vol 112 (22) ◽

pp. 8180-8182 ◽

Cited By ~ 85

Author(s):

Midori O. Ishitsuka ◽

Takenori Kusumi ◽

Hiroshi Kakisawa ◽

Kunimitsu Kaya ◽

Makoto M. Watanabe

Keyword(s):

Toxic Cyanobacterium ◽

Microcystis Viridis

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Biocidal effect of (E)-anethole on the cyanobacterium Aphanizomenon gracile Lemmermann

Journal of Applied Phycology ◽

10.1007/s10811-016-0993-2 ◽

2016 ◽

Vol 29 (3) ◽

pp. 1297-1305 ◽

Cited By ~ 1

Author(s):

Nikoletta Ntalli ◽

Antonis Michaelakis ◽

Kodjo Eloh ◽

Dimitrios P Papachristos ◽

Lukasz Wejnerowski ◽

...

Keyword(s):

Aphanizomenon Gracile

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Degradation of the toxic cyanobacterium Microcystis viridis using predaceous micro-animals combined with bacteria

Phycological Research ◽

10.1111/j.1440-1835.1998.tb00269.x ◽

1998 ◽

Vol 46 (s2) ◽

pp. 37-44 ◽

Cited By ~ 5

Author(s):

Yuhei Inamori ◽

Norio Sugiura ◽

Norio Iwami ◽

Masatoshi Matsumura ◽

Mikiya Hiroki ◽

...

Keyword(s):

Toxic Cyanobacterium ◽

Microcystis Viridis

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Differences in cell wall of thin and thick filaments of cyanobacterium Aphanizomenon gracile SAG 31.79 and their implications for different resistance to Daphnia grazing

Journal of Limnology ◽

10.4081/jlimnol.2016.1383 ◽

2016 ◽

Cited By ~ 1

Author(s):

Lukasz Wejnerowski ◽

Slawek Cerbin ◽

Maria K. Wojciechowicz ◽

Marcin K. Dziuba

Keyword(s):

Cell Wall ◽

Wall Thickness ◽

Cell Walls ◽

Cell Wall Thickness ◽

Filamentous Cyanobacterium ◽

Thin Sections ◽

Thick Filaments ◽

Transmission Electron ◽

The Difference ◽

Aphanizomenon Gracile

Recent studies have shown that the filamentous cyanobacterium Aphanizomenon gracile Lemmermann, strain SAG 31.79, consists of two types of filaments that differ in thickness. These two types are known to vary in resistance to Daphnia magna grazing: thin filaments (<2.5 µm) are more vulnerable to grazing than the thick ones (>2.5 µm). In this study, we investigated whether the difference in the vulnerability to grazing of thin and thick filaments is a result of different thickness of their cell walls, a filament stiffness determinant. We expected thick filaments to have thicker cell walls than the thin ones. Additionally, we analysed whether cell wall thickness correlates with filament thickness regardless of the filament type. A morphometric analysis of cell walls was performed using transmission electron micrographs of ultra-thin sections of the batch-cultured cyanobacterial material. Our study revealed that the thin type of filaments had thinner cell walls than the thick filaments. Moreover, cell wall thickness was positively correlated with filament thickness. TEM (transmission electron microscopy) observations also revealed that the thin type of filaments was often at different stages of autocatalytic cell destruction, which was mainly manifested in the increase in cell vacuolization and degradation of the cytoplasm content. Based on our findings, we assume that previously reported higher resistance of thick filaments to Daphnia grazing results from greater stiffness and excellent physiological conditions of thick filaments.

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Effects of water quality on inactivation and repair of Microcystis viridis and Tetraselmis suecica following medium-pressure UV irradiation

Chemosphere ◽

10.1016/j.chemosphere.2016.08.027 ◽

2016 ◽

Vol 163 ◽

pp. 209-216 ◽

Cited By ~ 16

Author(s):

Lei Liu ◽

Xiaona Chu ◽

Pengyu Chen ◽

Yan Xiao ◽

Jiangyong Hu

Keyword(s):

Water Quality ◽

Uv Irradiation ◽

Tetraselmis Suecica ◽

Medium Pressure ◽

Microcystis Viridis

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Degradation of microcystin by biofilm in practical treatment facility

Water Science & Technology ◽

10.2166/wst.2002.0744 ◽

2002 ◽

Vol 46 (11-12) ◽

pp. 237-244 ◽

Cited By ~ 12

Author(s):

T. Saitou ◽

N. Sugiura ◽

T. Itayama ◽

Y. Inamori ◽

M. Matsumura

Keyword(s):

Biological Treatment ◽

Conventional Treatment ◽

Summer Season ◽

Batch Experiments ◽

Treatment Facility ◽

Aquatic Bacteria ◽

Treatment Processes ◽

Viable Cells ◽

High Reduction ◽

Microcystis Viridis

Potential for degradation of microcystin by biofilm was examined by some batch experiments using biofilm scraped from practical biological treatment facility combined with conventional treatment processes. The viable cells of Microcystis viridis, which produced microcystin LR, RR and YR were degraded at 6 to 10 days by the addition of biofilm. Biofilm collected in summer season had especially higher potential for degradation of Microcystis with complete degradation at 6 days. In all seasons, Monas spp. grew remarkably, accompanied with the higher decrease of the viable cells of Microcystis and the micro-animals were considered as a main predator for Microcystis cells. Intracellular microcystin LR, RR, YR were degraded simultaneously with high reduction of Microcystis cells. Dissolved microcystin LR of 1,000 μg l−1 was effectively degraded by indigenous aquatic bacteria on biofilm during 5 days, the degradability became higher with the increase in the concentration of microcystin LR. From the results of our research, it was clarified that the aggregated microorganisms consisting of biofilm had high potential for degradation of intracellular and dissolved microcystin.

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