Effects of Cation Levels of the Nutrient Medium on the Biochemistry of Chlorella
Open Access
- 1 August 1974
- journal article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 54 (2) , 129-132
- https://doi.org/10.1104/pp.54.2.129
Abstract
The effects of variations in nutrient cation levels on the growth and biochemistry of Chlorella were investigated. This study involved concentration-series experiments in which the levels of Mg2+, K+, and Ca2+ varied from deficiency to toxicity levels for growth. The nutrient sufficiency concentrations of Mg2+ and K+ were 0.08 and 0.10 meq/1, respectively. Deficiencies of Mg2+ or K+ reduced the growth rate, as well as cellular total nitrogen and unsaturated fatty acid levels. K+ deficiency increased total lipid levels, while total fatty acids were unaffected. Increasing Mg2+ or K+ concentrations in the nutrient media were accompanied by corresponding increases in growth rate and certain biochemical fractions. Calcium was without effect except at a toxicity level. Cellular sufficiency concentrations for Mg2+ and K+ were 0.3 and 1.2% of the dry weight, respectively.Keywords
This publication has 1 reference indexed in Scilit:
- Effects of Cation Levels of the Nutrient Medium on the Biochemistry of ChlorellaPlant Physiology, 1974