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PHOSPHORUS REQUIREMENTS OF TWO PLANKTONIC DIATOMS IN STEADY STATE CULTURE 1, 2
Author(s) -
Carpenter Edward J.
Publication year - 1970
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1111/j.1529-8817.1970.tb02352.x
Subject(s) - biology , axenic , algae , phosphorus , diatom , botany , chemostat , bacteria , genetics , materials science , metallurgy
SUMMARY Minimum phosphorus requirements of 2 marine diatoms, Cylindrotheca (Nitzschia) closterium and Cyclotella nana , were measured in axenic steady state chemostat culture. C. closterium and C. nana required 1.055 and 1.045 × 10 −15 g‐at P cell −1 generation −1 , respectively, with an average cell doubling time of 0.20 divisions/day. The algae were cultured at 15.5 C and exposed to 5380 lux on a light‐dark cycle of 19 hr‐5 hr. The phosphorus requirement per unit of cell volume was 0.0135 and 0.0129 × 10 −15 g‐at P/μ 3 of cell volume for C. closterium and C. nana , respectively.