Results 61 to 70 of about 1,042 (173)
THE TOXIC ACTION OF COPPER ON NITELLA [PDF]
Journal of General Physiology, 1926 1. Using the loss of turgidity of the cells as a criterion it is found that the toxicity curve of copper chloride with Nitella is sigmoid. An empirical equation can be constructed which will approximately fit the curve. 2. When the concentration of the copper chloride is varied the toxic effect varies as a constant, fractional, power of ...
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, 2023 Nitella micklei Casanova in M. T.Casanova & J. L.Porter, Muelleria 31: 55 (2013) Type: WESTERN AUSTRALIA. Mulga Downs Outcamp Claypan, 17 Aug. 2006, M. T. Casanova PBS17: r114 (holo: MEL!). Dioecious. Plants sometimes calcified, homeoclemous, up to 90 mm tall, internodes up to 35 mm long (Fig. 10 a).
Casanova, Michelle T., Karol, Kenneth G.
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Potassium transference in Nitella. [PDF]
The Journal of general physiology, 1978 Transmembrane movements of K+ and Cl- were studied under a variety of experimental conditions. Potassium was found to carry more than 50% of an externally applied inward positive current. The increase in K+ influx was much greater than that predicted by the purely passive model.
T E, Ryan, C E, Barr, J P, Zorn
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“Shape of Cell”—An Auxin and Cell Wall Duet
Physiologia Plantarum, Volume 177, Issue 3, May/June 2025.ABSTRACT Understanding the mechanisms underlying cell shape acquisition is of fundamental importance in plant science, as this process ultimately defines the structure and function of plant organs. Plants produce cells of diverse shapes and sizes, including pavement cells and stomata of leaves, elongated epidermal cells of the hypocotyl, and cells with
Vinod Kumar +3 more
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THE DIRECT CURRENT RESISTANCE OF NITELLA [PDF]
Journal of General Physiology, 1930 The electrical resistance of Nitella cells to direct current is determined in a Wheatstone bridge, using a vacuum-tube detector, and string galvanometer. Very small currents are passed through the cells, to avoid stimulation. The galvanometer record shows typical transient effects in the living cells at opening and closing of the circuit, due to the ...
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New Phytologist, Volume 245, Issue 1, Page 69-87, January 2025.Summary The ability to accumulate nutrients is a hallmark for living creatures and plants evolved highly effective nutrient transport systems, especially for the uptake of potassium (K+). However, plants also developed mechanisms that enable the rapid extrusion of K+ in combination with anions.
Dorsaf Hmidi +4 more
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Charophytes of the Lubelszczyzna region (Eastern Poland)
Acta Societatis Botanicorum Poloniae, 2011 The distribution and ecology of charophytes in Lubelszczyzna (Eastern Poland) is described based on herbaria collections, literature data, and the author's own investigations.
Jacek Urbaniak +2 more
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Recreational land use contributes to the loss of marine biodiversity
People and Nature, Volume 6, Issue 5, Page 1758-1773, October 2024.Abstract Coastal areas are at the centre of human–nature relationship, shaped by recreation, tourism and aesthetic values. However, socioeconomic drivers of biodiversity change in coastal areas have received less attention. Soft sediment seafloors support diverse species communities and contribute to ecosystem functionality.
Elina A. Virtanen +5 more
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Chara zeylanica (Charophyceae, Characeae), novo registro para o sudoeste da Bahia
HeringerianaNo Brasil e no estado da Bahia Characeae é representa pelos gêneros Chara e Nitella. Há sete espécies de Chara em território baiano, mas nenhuma delas ocorrendo na região sudoeste do estado.
Claudenir Simões Caires
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, 2023 Nitella myriotricha A.Braun ex Kütz. Tab. Phycol. 7: 15, pl. 39. (1857) Type: Prope McIvor, 1852?, F. v. Mueller 819 (holo: MEL!; iso: MEL!). Dioecious. Plants elongate, fine and flabellate with thick mucus on the upper whorls; up to 210 mm high (Fig. 11 a).
Casanova, Michelle T., Karol, Kenneth G.
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