The fresh macroalga, Gracilaria lemaneiformis significantly inhibit the photophysiological activities of red-tide causing microalga, Scrippsiella trochoidea
- DOI
- 10.2991/icseee-15.2016.191How to use a DOI?
- Keywords
- eutrophication, macroalga, Hamful algal blooms (HABs), photophysiological activity, allelopathic effect.
- Abstract
The thecate dinoflagellate bloom microalga, Scrippsiella trochoidea, was co-cultured with different grams of fresh macroalga Gracilaria lemaneiformis under laboratory conditions, to characterize the allelopathic inhibition effect of the seaweed on photophysiological activities of the microalga. Cell numbers was measured, and Chlorophyll a (Chl a) fluorescence transient O-J-I-P curves associated with its specific parameters were determined. Both concentration and time-dependent inhibition of S. trochoidea were observed when the fresh seaweed was added. The cell numbers and pigments contents were markedly decreased; the O-J-I-P curve coupled with its specific parameters was reduced. The inhibitory effects of the macroalga on the microalga, according to the JIP-test and pigments contents, include a decrease in the number of active reaction centers, the blocking-up of the electron transport chain. This study suggests that fresh G. lemaneiformis is effective in inhibiting photophysiological activity of S. trochoidea, and thus be a potential ‘tool alga’ for controlling S. trochoidea blooms.
- Copyright
- © 2016, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Changpeng Ye AU - Lina Luo AU - Ruoyang Chen AU - Jiangang Zhao PY - 2016/04 DA - 2016/04 TI - The fresh macroalga, Gracilaria lemaneiformis significantly inhibit the photophysiological activities of red-tide causing microalga, Scrippsiella trochoidea BT - Proceedings of the 2015 4th International Conference on Sustainable Energy and Environmental Engineering PB - Atlantis Press SP - 1072 EP - 1082 SN - 2352-5401 UR - https://doi.org/10.2991/icseee-15.2016.191 DO - 10.2991/icseee-15.2016.191 ID - Ye2016/04 ER -