Growth Inhibition of Phaeocystis Globosa Induced by Luteolin-7-O-glucuronide from Seagrass Enhalus acoroides

Jingyi Zhu, Han Xiao, Qi Chen, Min Zhao, Dong Sun and Shunshan Duan
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Jingyi Zhu: Department of Ecology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
Han Xiao: Department of Ecology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
Qi Chen: Department of Ecology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
Min Zhao: Department of Ecology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
Dong Sun: Department of Ecology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
Shunshan Duan: Department of Ecology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China

IJERPH, 2019, vol. 16, issue 14, 1-13

Abstract: Enhalus acoroides ( E. acoroides ) is one of the most common species in seagrass meadows. Based on the application of allelochemicals from aquatic plants to inhibit harmful algal blooms (HABs), we used E. acoroides aqueous extract against harmful algae species Phaeocystis globosa ( P. globosa ). The results showed that E. acoroides aqueous extract could significantly inhibited the growth of P. globosa , decrease the chlorophyll-a content and photosynthetic efficiency (Fv/Fm) values of P. globosa , followed by vacuolization, plasmolysis, and the destruction of organelles. Twelve types of major chemical constituents were identified in E. acoroides aqueous extracts by ultraperformance liquid chromatography-high resolution mass spectrometry (UPLC-HRMS), including six flavonoids, two homocyclic peptides, two long-chain aliphatic amides, one tannin, and one nitrogen heterocyclic compound. Flavonoids were the characteristic chemical constituents of E. acoroides aqueous extract. Furthermore, the antialgal activity of luteolin-7-O-glucuronide (68.125 μg/mL in 8 g/L E. acoroides aqueous extract) was assessed. The EC 50–96 h value was 34.29 μg/mL. In conclusion, the results revealed that luteolin 7-O-glucuronide was one of the antialgal compounds of E. acoroides aqueous extract, with potential application as novel algaecide.

Keywords: harmful algal blooms; Enhalus acoroides; Phaeocystis globosa; Luteolin-7-O-glucuronide (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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