Journal of Marine Sciences ›› 2018, Vol. 36 ›› Issue (3): 96-100.DOI: 10.3969/j.issn.1001-909X.2018.03.011

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The effect of polyamines on the growth of diatoms

LAI Wen-yi, LOU Ya-min, XU Ji-lin*, ZHOU Cheng-xu, YAN Xiao-jun   

  1. School of Maine Sciences, Ningbo University, Ningbo 315211, China
  • Received:2018-05-07 Revised:2018-05-24 Online:2018-09-15 Published:2022-11-26

Abstract: To explore the effect of polyamines on the growth of diatoms, Chaetoceros sp., Phaeodactylum tricornutum Bohlin and Conticribra weissflogii were cultured indoor by adding spermine, spermidine, putrescine, cadaverine and phenylethylamine as exogenous polyamines. The results show that different polyamines reveal different specificity for the growth of different diatoms at the same temperature. Spermidine promotes the growth of Chaetoceros sp. And cadaverine promotes the growth of P. tricornutum, while spermine inhibit on the growth of P. tricornutum. The polyamines mainly promote the pre-growth of Conticribra weissflogii (before 13 d), and inhibit the growth (after 13 d). The timely and proper addition of polyamines can promote the growth of diatoms effectively and increase the reproductive efficiency of diatoms.

Key words: polyamine, diatom, growth

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