Photosynthesis and respiration in a fast growing strain of Gigartina exasperata (Harvey and Bailey) |
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Authors: | John E Merrill JRobert Waaland |
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Institution: | Department of Botany, University of Washington, Seattle, WA 98195, U.S.A. |
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Abstract: | Photosynthesis and respiration rates of blades from a selected, fast growing strain of the marine red alga. Gigartina exasperata Harvey and Bailey, a carrageenan producer, were measured with an oxygen electrode and compared with rates similarly obtained from wild material of the same species. The measurements, expressed as μl O2 · mg chl a?1, min?1. were made over a light intensity range from 5 to 800 μE · m?2 · sec?1 and a temperature range of 6 to 16°C. The photosynthesis light intensity data are best described by hyperbolic functions. |
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