Green Light Suppresses Cell Growth but Enhances Photosynthetic Rate and MIB Biosynthesis in PE-Containing Pseudanabaena

Tengxin Cao^1,2,4, Ming Su^1,4,*, Yufan Ai^1,4, Ziyi Yang^1,4, Jinbo Zhao^1,3, Min Yang^1,4,*

1. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing, 100085.

2. Sino-Danish College, Sino-Danish Center for Education and Research, University of Chinese Academy of Sciences, Zhongguancun East Rd. 80, Beijing, 100190.

3. School of Civil Engineering, Chang’an University, Xi’an, 710054.

4. University of Chinese Academy of Sciences, Beijing, 100049.

* Corresponding Author: Min Yang (yangmin@rcees.ac.cn)

Highlights

• MIB biosynthesis is light color-dependent in PE-containing Pseudanabaena
• Growth of P. cinerea and TCA cycle were promoted under red light
• MIB biosynthesis is co-upregulated with photosynthetic pigments under green light
• <2% of carbon from precursor GPP was allocated for MIB compared to Chl a