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Langer, Gerald (2014): Experiment: Growth rates and percentages of normal versus malformed versus incomplete versus incomplete and malformed coccoliths [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.829716, Supplement to: Langer, Gerald; de Nooijer, Lennart Jan; Oetjen, Kerstin (2010): On the role of the cytoskeleton in coccolith morphogenenesis: the effect of cytoskeleton inhibitors. Journal of Phycology, 46(6), 1252-1256, https://doi.org/10.1111/j.1529-8817.2010.00916.x

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Abstract:
The coccolithophore Emiliania huxleyi (Lohmann) W. W. Hay et H. Mohler was cultured in natural seawater with the addition of either the microtubule-inhibitor colchicine, the actin-inhibitor cytochalasin B, or the photosynthesis inhibitor 3-(3,4 dichlorophenyl)-1,1-dimethyl-urea (DCMU). Additionally, E. huxleyi was cultured at different light intensities and temperatures. Growth rate was monitored, and coccolith morphology analyzed. While every treatment affected growth rate, the percentage of malformed coccoliths increased with colchicine, cytochalasin B, and at higher than optimal temperature. These results represent the first experimental evidence for the role of microtubules and actin microfilaments in coccolith morphogenesis.
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204 data points

Data

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Variable

Treat

µ [#/day]

µ std dev [±]

Cocco norm [%]

Cocco norm std dev [±]

Malformation [%]

Malformation std dev [±]

Cocco incomplete [%]
10 
Cocco incomplete std dev [±]
11 
Cocco malformed [%]
12 
Cocco malformed std dev [±]
Colchicine IIIControl1.350.0191.900.173.271.021.930.472.900.71
Colchicine III500 µM1.250.0189.672.154.930.011.780.423.622.56
Colchicine IVControl1.340.0192.450.874.000.761.150.342.400.45
Colchicine IV750 µM0.950.0081.271.668.932.852.471.037.330.16
Colchicine IIControl1.330.0290.851.884.750.692.380.342.020.85
Colchicine II1000 µM0.590.0442.254.1022.091.542.530.1433.142.69
Cytochalasin test0.1 µM1.15
Cytochalasin test1 µM1.18
Cytochalasin test10 µM1.02
Cytochalasin test100 µM0.20
CytochalasinControl1.510.0386.993.966.333.382.421.504.252.08
Cytochalasin100 µM0.200.0215.311.1029.342.822.551.7152.803.43
PhotosynthesisControl1.410.0388.912.124.211.113.270.753.610.27
PhotosynthesisDCMU, 0.01 µM0.580.0192.821.553.490.083.071.350.620.13
PhotosynthesisLow light, 5-7 µMol photons/m**2/s0.560.0887.674.617.183.914.280.790.870.09
DMSOControl1.230.15
DMSO0.04vol %1.410.01
DMSO0.1vol %1.440.03
DMSO0.2vol %1.410.02
DMSO0.5vol %1.410.00
Temperature10?C80.9910.777.991.771.860.449.168.56
Temperature15?C86.870.273.390.533.431.196.310.39
Temperature20?C89.081.234.050.873.170.373.690.01
Temperature25?C28.861.3324.672.581.731.2744.742.52