The influence of soil water extract and thiamine on the growth of Cladophora glomerata

1975 ◽  
Vol 53 (6) ◽  
pp. 530-535 ◽  
Author(s):  
Laurence F. Moore ◽  
Duncan A. McLarty
Keyword(s):  
Soil Water ◽  
Water Extract ◽  
Optimum Concentration ◽  
Laurentian Great Lakes ◽  
Cladophora Glomerata ◽  
Active Components ◽  
Two Samples ◽  
Soil Water Extract ◽  
Labile Component ◽  
Synthetic Media

Soil water extract (SWE) has been used for decades to supplement certain algal and fungal cultures, but its active components remain essentially unknown. Cladophora glomerata, an attached green alga which has become a problem in several of the Laurentian Great Lakes and elsewhere, is one species that grows well on synthetic media supplemented with SWE. Unialgal cultures were used to investigate the nature of the active components in SWE with the hope that insight of the nutritional requirements of this alga would be gained.Analysis of SWE showed that an organic heat-labile component was significant, and when thiamine was substituted for SWE, it was found to provide 80% of the stimulation induced by SWE. The presence of thiamine in two samples of SWE was verified, and concentrations of 3 and 10 μg/litre were determined using the Phycomyces bioassay. Subsequent investigations of the requirement of thiamine by C. glomerata demonstrated that 1 μg/litre, provided either by SWE or as the pure vitamin, stimulated satisfactory growth, while 10 μg/litre is the apparent optimum concentration.

Root Elongation Method for the Quality Assessment of Metal-Polluted Soils: Whole Soil or Soil-Water Extract?

2020 ◽  
Vol 20 (4) ◽  
pp. 2294-2303
Author(s):  
Eva V. Prudnikova ◽  
Alexander Neaman ◽  
Vera A. Terekhova ◽  
Mikhail M. Karpukhin ◽  
Evgenii L. Vorobeichik ◽  
...  
Keyword(s):  
Quality Assessment ◽  
Soil Water ◽  
Root Elongation ◽  
Water Extract ◽  
Polluted Soils ◽  
Elongation Method ◽  
Soil Water Extract

Determination of fluoride in soil water extract by ion chromatography with column-switching technique

2016 ◽  
Vol 34 (4) ◽  
pp. 442
Author(s):  
Xinhua JIANG ◽  
Chengzhu NI ◽  
Binhe ZHU ◽  
Xunyan ZHAO ◽  
Suqing CHEN ◽  
...  
Keyword(s):  
Soil Water ◽  
Ion Chromatography ◽  
Water Extract ◽  
Column Switching ◽  
Soil Water Extract

Analysis of the 1:5 soil: water extract in burnt soils to evaluate fire severity

CATENA ◽  
2008 ◽  
Vol 74 (3) ◽  
pp. 246-255 ◽  
Author(s):  
J. Notario del Pino ◽  
I. Dorta Almenar ◽  
A. Rodríguez Rodríguez ◽  
C. Arbelo Rodríguez ◽  
F.J. Navarro Rivero ◽  
...  
Keyword(s):  
Soil Water ◽  
Fire Severity ◽  
Water Extract ◽  
Soil Water Extract

Conductivity of soil-water extract as an index of soil structure

1955 ◽  
Vol 6 (1) ◽  
pp. 84-91 ◽  
Author(s):  
J. S. Joffe ◽  
Jesse Elson
Keyword(s):  
Soil Water ◽  
Soil Structure ◽  
Water Extract ◽  
Soil Water Extract

Simplified Evaluation of Salt Affected Soils Using 1:5 Soil–Water Extract

2021 ◽  
pp. 1-17
Author(s):  
Tsuneyoshi Endo ◽  
Mubarak Abdelrahman Abdalla ◽  
Abdel Karim Hassan Awad Elkarim ◽  
Mayu Toyoda ◽  
Sadahiro Yamamoto ◽  
...  
Keyword(s):  
Soil Water ◽  
Water Extract ◽  
Soil Water Extract ◽  
Salt Affected Soils

Evolution of Synthetic Fluid from Water Extract from Fermented Ground Maize (WEFGM) as an Alternative to Water-Based Cutting Fluids: Performance Test

2018 ◽  
Vol 1150 ◽  
pp. 59-66
Author(s):  
Taofeek Ayotunde Yusuf ◽  
Chibueze Nnorom ◽  
Olusola Femi Olusunmade
Keyword(s):  
Performance Test ◽  
New Technologies ◽  
Temperature Drop ◽  
Water Extract ◽  
Deionized Water ◽  
Additive Concentration ◽  
Actual Performance ◽  
Two Samples ◽  
Significant Difference ◽  
Water Based

The use of agricultural wastes and natural materials in new technologies is a novel subject. Consequently, an attempt has been made to formulate a synthetic fluid using an organic water, Water Extract from Fermented Ground Maize (WEFGM) and compare its performance with water-based sample in turning operation using a mild steel as workpiece. Two samples of synthetic fluids were formulated from each of deionized WEFGM, ordinary WEFGM and deionized water as base-fluids at two composition (5 and 10%vol) levels of selected additives. The results of experimental analysis of heat transfer properties of these synthetic fluids exist, hence the need to ascertain the actual performance output. Temperature-Time Gradient (TTG) which is a rate of temperature drop (heat withdrawn) from the work zone was used as evaluation parameters. The result showed that deionized WEFGM is the most efficient of the entire samples at both compositions with an average TTG of 3.61 and 2.16 °C/min at 10 and 5% additive concentration respectively. At lower additive concentration which is more economically advantageous, the performance rating is deionized WEFGM>>WEFGM>>deionized Water. This implies that WEFGM is more effective than water as a base fluid for synthetic fluid in performance as it has been previously so reported in properties. Meanwhile, T-test statistical analysis (using IBM SPSS 23) shows that there is highly significant difference in TTG at each time of application of individual fluid (p<0.05). However, TTG of one fluid sample is not significantly different from the other (p>0.05) implying that the fluids can all work as coolants and relatively have comparable performance output.

Sign in / Sign up

Export Citation Format

Share Document