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. 2022 Apr 7;13:871177. doi: 10.3389/fmicb.2022.871177

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Copyright © 2022 Coyne, Wang and Johnson.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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(Left) Bacteria-algae interactions occur in the phycosphere where chemicals are exchanged. Algicidal bacteria may exert control over algal cell growth and viability through direct physical contact or indirectly through production of algicidal compounds. (Right) Algal response to algicidal bacteria varies. Algicidal interactions may cause lysis, or necrosis, in which the algal cell is lysed through chemical or physical means. Algal cells may also form temporary cysts as a defense mechanism. Chemical compounds produced by algicidal bacteria may induce production of reactive oxygen species (ROS), impact photobiology, inhibit cell cycle progression and/or induce programmed cell death (PCD), or apoptosis, in phytoplankton. DOC, dissolved organic carbon, QS, quorum sensing; DMSP, dimethylsulfoniopropionate. See text for details. Created with BioRender.com.