Effects of ultraviolet radiation on photosynthetic performance and N<sub>2</sub> fixation in <i>Trichodesmium erythraeum</i> IMS 101

Cai, Xiaoni; Hutchins, David A.; Fu, Feixue; Gao, Kunshan

doi:https://doi.org/10.5194/bg-14-4455-2017

Articles | Volume 14, issue 19

https://doi.org/10.5194/bg-14-4455-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/bg-14-4455-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 14, issue 19

Research article

|

11 Oct 2017

Research article |

| 11 Oct 2017

Effects of ultraviolet radiation on photosynthetic performance and N₂ fixation in Trichodesmium erythraeum IMS 101

Xiaoni Cai, David A. Hutchins, Feixue Fu, and Kunshan Gao

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https://doi.org/10.5194/bg-14-4455-2017-supplement

Data sets

Effects of ultraviolet radiation on photosynthetic performance and N2 fixation in Trichodesmium erythraeum IMS 101 X. Cai https://doi.org/10.5061/dryad.s5p44

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Short summary

Trichodesmium is significant marine N₂ fixer. We conducted short- and long-term UV exposure experiment to investigate how UV affects this organism. Our results showed N₂ fixation and carbon fixation rates were significantly reduced under UV radiation. As a defense strategy, Trichodesmium is able to synthesize UV-absorbing compounds to protect from UV damage. Our results suggest that shipboard experiments in UV-opaque containers may have substantially overestimated in situ N₂ fixation rate.