Results 41 to 50 of about 14,223 (165)

Effect of hydroxyurea on mitotic activity 3H-thymidine and 3H-phenylalanine incorporation in the antheridial filament cells of Chara vulgaris

open access: yesActa Societatis Botanicorum Poloniae, 2015
Hydroxyurea inhibits mitotic activity in cells of the antheridial filaments of Chara vulgaris by blocking phase S and phase G2. Blocking of cells in phase G2 also occurs in the case of the root meristem cells of Helianthus annuus and Vicia faba var ...
Anastazja Bilecka
doaj   +1 more source

A simplified two‐station approach for modeling metabolism in dam tailwaters subject to diel flow variation

open access: yesLimnology and Oceanography: Methods, Volume 24, Issue 10, October 2026.
Abstract Tailwaters are ubiquitous and highly managed ecosystems whose food webs often rely disproportionately on autochthonous energy. In situ continuous dissolved oxygen data are increasingly being used to estimate gross primary productivity and ecosystem respiration in rivers, but this approach is complicated in tailwaters, where upriver ...
Ian W. Bishop   +5 more
wiley   +1 more source

Unraveling the fastest myosin: Discovery history and structure-function relationships of algae Chara myosin XI

open access: yesBiophysics and Physicobiology
Plant myosins have higher velocities than animal myosins. Among them, myosins in freshwater algae of the genus Chara have extremely high velocities. We have biochemically studied myosins that perform high-speed movements in the alga Chara.
Kohji Ito, Takeshi Haraguchi
doaj   +1 more source

Algunos aspectos de la variabilidad de los oogonios en poblaciones actuales del género Chara (Charophyceae). Aplicación paleontológica

open access: yesEstudios Geologicos, 1986
Se hace una revisión crítica de-algunos criterios taxonómicos de uso habitual en paleontología de carofitas. Sus resultados, basados en cuatro poblaciones actuales (Chara aculeolata, Chara aff.baltica, Chara delicatula y Chara globularis), permiten hacer
J. Pedrola, J. D. Acuña
doaj   +1 more source

Impact of Anthropogenic Activities and Climate Change on the Wetlands in the North‐West of Madagascar

open access: yesPlant-Environment Interactions, Volume 7, Issue 5, October 2026.
ABSTRACT Macrophytes are vulnerable to various factors in their natural ecosystems, including climatic, ecological, and anthropogenic changes. This study aims to document how these factors influence floristic composition. Four sites were investigated in the Boeny Region of northwest Madagascar: Ambatoboeny, Marovoay, Ankarafantsika National Park, and ...
Botovao Auguste Ramiandrisoa   +6 more
wiley   +1 more source

Modeling the Action Potential in Characeae Nitellopsis obtusa: Effect of Saline Stress

open access: yesFrontiers in Plant Science, 2019
Action potentials (AP) of characean cells were the first electrical transients identified in plants. APs provide information about plethora of environmental cues. Salinity stress is critical for plants and impacts on excitability.
Vilma Kisnieriene   +3 more
doaj   +1 more source

Figments of Imagination v. 2 (1994: Spring): 3

open access: yes, 1994
Short story "Quicksilver" by Chara Lundby; short story "Declaration" by Michael ...

core   +2 more sources

Interacciones multitróficas en un humedal urbano artificial: La macrófita Chara sp. (Charophyta, Characeae) y su asociación con los gasterópodos nativos y exóticos del lugar

open access: yesLilloa
El lago San Miguel es un humedal artificial ubicado en San Miguel de Tucumán. La macroalga Chara sp., es un componente importante entre las macrófitas de este cuerpo de agua.
María José Miranda   +2 more
doaj   +1 more source

Distribution and co-occurrence patterns of charophytes and angiosperms in the northern Baltic Sea

open access: yesScientific Reports, 2023
The distribution data of 11 soft substrate charophyte and angiosperm species were analyzed. Our study aimed to elucidate the co-occurrence patterns among these sympatric macrophyte species and quantify their distribution areas.
Kristjan Herkül   +3 more
doaj   +1 more source

Typification of Chara prolifera revisited [PDF]

open access: yes, 2019
Braun, U. 2018: Typisierung von Chara prolifera erneut aufgegriffen. Schlechtendalia 36: 101–102. Die Typisierung von Chara prolifera (Characeae) wird diskutiert.
Braun, Uwe, Marx, Denise
core   +1 more source

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