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Significance of Mn and Fe for growth of coastal marine diatom Thalassiosira weissflogii

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Title: Significance of Mn and Fe for growth of coastal marine diatom Thalassiosira weissflogii
Authors: Ushizaka, Satomi Browse this author
Sugie, Kohji Browse this author
Yamada, Masumi Browse this author
Kasahara, Mariko Browse this author
Kuma, Kenshi Browse this author →KAKEN DB
Keywords: Coastal marine diatom
Iron
Manganese
Maximal cell yields
Specific growth rate
Thalassiosira weissflogii
Issue Date: Sep-2008
Publisher: Japanese Society of Fisheries Science
Journal Title: Fisheries science
Volume: 74
Issue: 5
Start Page: 1137
End Page: 1145
Publisher DOI: 10.1111/j.1444-2906.2008.01633.x
Abstract: The significance of Mn and Fe for the growth of a coastal marine diatom Thalassiosira weissflogii was investigated by performing culture experiments containing macronutrients with either Mn or Fe, or both. Only the addition of both Mn and Fe induced the highest growth rates and maximal cell yields. Maximal growth was maintained in continuous culture media, which were repeatedly prepared by an inoculation of pre-culture and the addition of both Mn and Fe to the control culture medium containing macronutrients. In particular, it was found that the full growth recovery in Mn-sufficient medium (without added Fe) is accomplished by the addition of Fe even after several days' incubation. On the contrary, there was no sufficient growth recovery by the addition of Mn after a long incubation time in Fe-sufficient medium but without additional Mn. These results suggest that T. weissflogii in Mn-sufficient waters retains the ability for full physiological recovery for a long time, probably resulting from the decrease in the oxidative stress of phytoplankton by the production of antioxidant enzyme Mn superoxide dismutase during a long incubation period.
Rights: © 2008 公益社団法人日本水産学会
© 2008 The Japanese Society of Fisheries Science
Type: article
URI: http://hdl.handle.net/2115/53364
Appears in Collections:水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 久万 健志

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