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Variation in cell composition and utilization of N and P for growth of Selenastrum capricornutum
Author(s) -
CLAESSON ANDERS
Publication year - 1980
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1980.tb03219.x
Subject(s) - selenastrum , dry weight , nutrient , chlorophyll , biology , chlorophyll a , chlorophyta , botany , limiting , algae , chlorophyceae , zoology , ecology , mechanical engineering , engineering
Cell material from different phases of growth for the green alga Selenastrum capricornutum Printz was analysed for major elements and chlorophyll a content. The ranges in percentage of the dry weight were 50–80%, 4.4–8.8%, 0.24–3.0%, and 0.20–3.23% for C, N, P and chlorophyll a , respectively. The dry weight per cell varied 2.3 times between different growth phases. A N/P‐quotient of about 10 (by weight) was found to be a critical level for Selenastrum when these elements were the most limiting nutrients for growth. 31 different organic N‐compounds were tested as single N sources in growth experiments with Selenastrum . At least 19 of them could be utilized to varying extent for algal growth. Three organic P‐compounds of six tested, were utilized for algal growth. Yield coefficients (mm 3 cell volume/mg limiting nutrient element) for Selenastrum were determined with NO 3 , ‐N (y N = 134). NH 4 ‐N (Y N = 111) and PO 4 ‐P (Y P = 2580).