Effect of photon fluence rates of white and blue-green light on growth efficiency and pigment content of three diatom species in batch cultures
This study provides information on the combined effect of light quality and photon fluence rates (light intensity) on growthefficiency and pigment content of the coastal plankton diatoms Chaetoceros sp., Skeletonema costatum and Thalassiosirapseudonana. The relative growth efficiencies of the three...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2002 |
| País: | México |
| Institución: | Instituto Mexicano del Seguro Social |
| Repositorio: | Redalyc-IMSS |
| OAI Identifier: | oai:redalyc.org:48028305 |
| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=48028305 |
| Access Level: | acceso abierto |
| Palabra clave: | Ciencias de la Tierra Diatoms carotenoids light quality chlorophyll a growth efficiency |
| Sumario: | This study provides information on the combined effect of light quality and photon fluence rates (light intensity) on growthefficiency and pigment content of the coastal plankton diatoms Chaetoceros sp., Skeletonema costatum and Thalassiosirapseudonana. The relative growth efficiencies of the three species were significantly higher at 210 µE m-2s-1, under mixed bluegreenlight for Chaetoceros sp. and S. costatum, and with white light for T. pseudonana. The chlorophylla contents of the threespecies grown under blue-green light, alone or mixed with white light, were significantly higher (P < 0.001) than those with whitelight and, in all cases, contents were lower at high photon fluence rates, while carotenoids showed inverse trends. The relativegrowth efficiencies of the three species were significantly different (P < 0.001). There were also changes in the relative pigmentconcentrations associated with the growth phase, probably due to autoshading. |
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