The Significance of Concentration for the Rate of Ion Absorption by Higher Plants in Water Culture, II. Experiments with Aquatic Plants

1953 ◽  
Vol 6 (4) ◽  
pp. 837-843 ◽  
Author(s):  
Carsten Olsen
Keyword(s):  
Aquatic Plants ◽  
Higher Plants ◽  
Water Culture ◽  
Ion Absorption

ACCUMULATION OF LEAD AND OTHER TOXIC METALS BY AQUATIC PLANTS

2018 ◽  
pp. 38-41
Author(s):  
I. V. Tropin ◽  
S. A. Ostroumov
Keyword(s):  
Aquatic Plants ◽  
Water Purification ◽  
Toxic Metals ◽  
Zinc Concentration ◽  
Plant Biomass ◽  
Higher Plants ◽  
Atomic Absorption Spectrophotometry ◽  
Background Concentration ◽  
Absorption Spectrophotometry ◽  
Elodea Densa

Three toxic metals-lead, copper and zinc - were measured in the biomass of the aquatic higher plants of Elodea densa. The method of atomic absorption spectrophotometry was used. Plants were incubated at elevated concentrations of three metals in the aqueous medium. This has led to a significant increase in lead content in plant biomass. Namely, the concentration of lead in biomass increased to 1567% compared to the background concentration of this element in the biomass in the control (the background concentration was taken as 100%). After incubation, the concentration of copper in the biomass was 594% of the background concentration. After similar incubation, zinc concentration was 133% of the background concentration. The results can be useful in the analysis of biological monitoring and water purification.

scholarly journals Identifikasi Mikroalga dari Divisi Chlorophyta di Waduk Sumber Air Jaya Dusun Krebet Kecamatan Bululawang Kabupaten Malang

2015 ◽  
Vol 8 (1) ◽  
pp. 20 ◽  
Author(s):  
SHADDIQAH MUNAWAROH FAUZIAH ◽  
AINUN NIKMATI LAILY
Keyword(s):  
Drinking Water ◽  
Chlorophyll A ◽  
Green Algae ◽  
Aquatic Plants ◽  
Dominant Species ◽  
Flood Control ◽  
Higher Plants ◽  
Chlorophyll B ◽  
Different Characteristics

<p class="5abstrak">Reservoir is a water puddle created by humans by damming up the river and the water is stored with multiple destinations, such as for drinking, such as for drinking water, hydropower, flood control and many more. In addition there are fish and aquatic plants, in the reservoir also found other microorganisms which is phytoplankton that are mostly a member of the division Chlorophyta (green algae). Chlorophyta are the largest group of vegetation algae, this algae has a green clear color as in higher plants because it contains the pigment chlorophyll a and chlorophyll b more dominant. Species of the division Chlorophyta found in several posts in the Sumber Air Jaya reservoir are <em>Spirogyra </em>sp<em>., Ulothrix </em>sp.<em>,</em> and <em>Closterium </em>sp. with different characteristics of each species.</p>

scholarly journals With a little help from their friends: Algae acquire vitamins through intimate associations with bacteria

2006 ◽  
Vol 28 (4) ◽  
pp. 17-20
Author(s):  
Martin T. Croft and Alison G. Smith
Keyword(s):  
Aquatic Plants ◽  
Higher Plants ◽  
Inorganic Compounds ◽  
Algal Species ◽  
Associated Bacteria ◽  
Marine Systems ◽  
Green Algal ◽  
The World ◽  
Algae And Bacteria ◽  
Amazonian Rainforest

Everyone is familiar with the concept of the Amazonian rainforest as the lungs of the world, but what is less well known is that 50% of the world's photosynthesis is carried out by algae1 -- simple aquatic plants found in all freshwater and marine systems. By analogy with higher plants, which evolved from the green algal lineage, it is assumed that algae are autotrophic, requiring merely light and a mixture of inorganic compounds to grow. It is perhaps surprising therefore to discover that more than half of all algal species require exogenous cobalamin for growth. Recent work has established that the source of the vitamin is from closely associated bacteria, which appear to live in symbiosis with the algal cells. At the same time, reports of other interactions between algae and bacteria are appearing, prompting a rethink on the concept of organisms existing as separate entities, and having profound implications for our understanding of oceanic ecosystems.

In vitro and in vivo polysaccharides assembly: ultrastructural and cytochemical study of growing plant cell wall components.

1978 ◽  
Vol 36 (2) ◽  
pp. 434-435
Author(s):  
D. Reis ◽  
B. Vian ◽  
J. C. Roland
Keyword(s):  
Cell Wall ◽  
Self Assembly ◽  
Plant Cell Wall ◽  
Higher Plants ◽  
Three Dimensional ◽  
Cytochemical Study ◽  
Wall Components

Wall morphogenesis in higher plants is a problem still open to controversy. Until now the possibility of a transmembrane control and the involvement of microtubules were mostly envisaged. Self-assembly processes have been observed in the case of walls of Chlamydomonas and bacteria. Spontaneous gelling interactions between xanthan and galactomannan from Ceratonia have been analyzed very recently. The present work provides indications that some processes of spontaneous aggregation could occur in higher plants during the formation and expansion of cell wall.Observations were performed on hypocotyl of mung bean (Phaseolus aureus) for which growth characteristics and wall composition have been previously defined.In situ, the walls of actively growing cells (primary walls) show an ordered three-dimensional organization (fig. 1). The wall is typically polylamellate with multifibrillar layers alternately transverse and longitudinal. Between these layers intermediate strata exist in which the orientation of microfibrils progressively rotates. Thus a progressive change in the morphogenetic activity occurs.

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