Journal of Tropical Oceanography ›› 2022, Vol. 41 ›› Issue (3): 186-190.doi: 10.11978/2021089CSTR: 32234.14.2021089

• Marine Biology • Previous Articles     Next Articles

Study on the secondary metabolites of reef habitat algae-derived fungus Pestalotiopsis neglecta SCSIO41403 from the South China Sea

YE Yuxiu1,2(), LUO Xiaowei1, YANG Bin2,3, LIN Xiuping2, LIU Yonghong2, ZHOU Xuefeng2,3()   

  1. 1. Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning 530200, China
    2. CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
    3. Hainan Provincial Key Laboratory of Tropical Marine Biology Technology, Sanya Institute of Oceanology, Chinese Academy of Sciences, Sanya 572024, China
  • Received:2021-07-12 Revised:2021-09-05 Published:2021-09-06
  • Contact: ZHOU Xuefeng E-mail:18877548173@163.com;xfzhou@scsio.ac.cn
  • Supported by:
    Finance Science and Technology Project of Hainan Province(ZDKJ202018);National Natural Science Foundation of China(U20A20101);National Natural Science Foundation of China(81973235)

Abstract:

We research on the secondary metabolites from the fungus Pestalotiopsis neglecta SCSIO41403, derived from the coral reefs habitat algae Coelarthrum sp. in the South China Sea. Six pure secondary metabolites were isolated and purified by medium pressure normal phase column chromatography and semi-preparative high performance liquid chromatography (HPLC) in the fungal culture broth. The compounds were identified and elucidated as gamahorin (1), microsporaline C (2), 7-hydroxy-5-methoxy-4,6-dimethylphthalidc (3), demethyl nectriapyrone A (4), 4-hydroxybenzaldehyde (5), 4-hydroxyphenethyl acetate (6) by nuclear magnetic resonance spectrum (NMR), mass spectrum (MS), and literature analysis. All compounds were obtained from this strain for the first time, and compounds 1, 2, 5, and 6 were discovered from marine-derived fungus for the first time. In the antibacterial tests, compound 3 was revealed to have significant inhibitory activity against Candida albicans.

Key words: Algae-derived fungus, Pestalotiopsis neglecta, secondary metabolites, antibacterial activity, South China Sea

CLC Number: 

  • Q935