Intraspecific chemical communication in microalgae

Marianna Venuleo, John A. Raven, Mario Giordano (Lead / Corresponding author)

Research output: Contribution to journalReview articlepeer-review

31 Citations (Scopus)


The relevance of infochemicals in the relationships between organisms is emerging as a fundamental aspect of aquatic ecology. Exchanges of chemical cues are likely to occur not only between organisms of different species, but also between conspecific individuals. Especially intriguing is the investigation of chemical communication in microalgae, because of the relevance of these organisms for global primary production and their key role in trophic webs. Intraspecific communication between algae has been investigated mostly in relation to sexuality and mating. The literature also contains information on other types of intraspecific chemical communication that have not always been explicitly tagged as ways to communicate to conspecifics. However, the proposed role of certain compounds as intraspecific infochemicals appears questionable. In this article, we make use of this plethora of information to describe the various instances of intraspecific chemical communication between conspecific microalgae and to identify the common traits and ecological significance of intraspecific communication. We also discuss the evolutionary implications of intraspecific chemical communication and the mechanisms by which it can be inherited. A special focus is the genetic diversity among conspecific algae, including the possibility that genetic diversity is an absolute requirement for intraspecific chemical communication.

Original languageEnglish
Pages (from-to)516-530
Number of pages15
JournalNew Phytologist
Issue number2
Early online date22 Mar 2017
Publication statusPublished - 20 Jun 2017


  • Journal article
  • Review
  • Evolution
  • Infochemicals
  • Intraspecific communication
  • Signaling
  • Species concept


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