Allelopathic inhibition of microalgae by the freshwater stonewort, Chara australis, and a submerged angiosperm, Potamogeton crispus

Fariba M. Pakdel, Lien Sim, John Beardall, Jenny DAVIS

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Eutrophication is a major management issue in shallow lakes worldwide. The role of allelopathy in aquatic systems has received increasing attention as a potential means of controlling algal blooms. Macrophytes with allelopathic potential may play an important role in the restoration of eutrophic lakes. Our objective was to investigate the allelopathic effect of the freshwater stonewort, Chara australis, and the submerged angiosperm, Potamogeton crispus, on microalgae. To detect possible allelopathic effects, we compared the growth of a cyanobacterial species, Anabaena variabilis and a green alga, Scenedesmus quadricauda, in the presence and absence of macrophyte extracts, exudates and live material. We found a significant negative effect of all treatments on A. variabilis, with the strongest effect produced by C. australis. In contrast, no effect of macrophyte extracts was evident on the growth of S. quadricauda. This absence of effect confirmed earlier findings that macrophyte allelochemicals are specific to particular target organisms. Our results suggest that allelopathic macrophytes have the potential to mitigate phytoplankton blooms in systems dominated by A. variabilis and perhaps other cyanobacteria.
Original languageEnglish
Pages (from-to)24-30
Number of pages7
JournalAquatic Botany
Volume110
DOIs
Publication statusPublished - 2013
Externally publishedYes

Fingerprint

Potamogeton crispus
Anabaena variabilis
Chara
microalgae
angiosperm
Scenedesmus quadricauda
Angiospermae
macrophytes
algal blooms
macrophyte
lakes
allelopathy
allelochemicals
extracts
eutrophication
Chlorophyta
Cyanobacteria
algal bloom
allelochemical
organisms

Cite this

Pakdel, Fariba M. ; Sim, Lien ; Beardall, John ; DAVIS, Jenny. / Allelopathic inhibition of microalgae by the freshwater stonewort, Chara australis, and a submerged angiosperm, Potamogeton crispus. In: Aquatic Botany. 2013 ; Vol. 110. pp. 24-30.
@article{8c66661465fa4d2db45ab08e44d2f168,
title = "Allelopathic inhibition of microalgae by the freshwater stonewort, Chara australis, and a submerged angiosperm, Potamogeton crispus",
abstract = "Eutrophication is a major management issue in shallow lakes worldwide. The role of allelopathy in aquatic systems has received increasing attention as a potential means of controlling algal blooms. Macrophytes with allelopathic potential may play an important role in the restoration of eutrophic lakes. Our objective was to investigate the allelopathic effect of the freshwater stonewort, Chara australis, and the submerged angiosperm, Potamogeton crispus, on microalgae. To detect possible allelopathic effects, we compared the growth of a cyanobacterial species, Anabaena variabilis and a green alga, Scenedesmus quadricauda, in the presence and absence of macrophyte extracts, exudates and live material. We found a significant negative effect of all treatments on A. variabilis, with the strongest effect produced by C. australis. In contrast, no effect of macrophyte extracts was evident on the growth of S. quadricauda. This absence of effect confirmed earlier findings that macrophyte allelochemicals are specific to particular target organisms. Our results suggest that allelopathic macrophytes have the potential to mitigate phytoplankton blooms in systems dominated by A. variabilis and perhaps other cyanobacteria.",
keywords = "Allelopathy, Macrophytes, Algal blooms, Cyanobacteria, Eutrophication, Growth inhibition.",
author = "Pakdel, {Fariba M.} and Lien Sim and John Beardall and Jenny DAVIS",
year = "2013",
doi = "10.1016/j.aquabot.2013.04.005",
language = "English",
volume = "110",
pages = "24--30",
journal = "Aquatic Botany",
issn = "0304-3770",
publisher = "Elsevier",

}

Allelopathic inhibition of microalgae by the freshwater stonewort, Chara australis, and a submerged angiosperm, Potamogeton crispus. / Pakdel, Fariba M.; Sim, Lien; Beardall, John; DAVIS, Jenny.

In: Aquatic Botany, Vol. 110, 2013, p. 24-30.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Allelopathic inhibition of microalgae by the freshwater stonewort, Chara australis, and a submerged angiosperm, Potamogeton crispus

AU - Pakdel, Fariba M.

AU - Sim, Lien

AU - Beardall, John

AU - DAVIS, Jenny

PY - 2013

Y1 - 2013

N2 - Eutrophication is a major management issue in shallow lakes worldwide. The role of allelopathy in aquatic systems has received increasing attention as a potential means of controlling algal blooms. Macrophytes with allelopathic potential may play an important role in the restoration of eutrophic lakes. Our objective was to investigate the allelopathic effect of the freshwater stonewort, Chara australis, and the submerged angiosperm, Potamogeton crispus, on microalgae. To detect possible allelopathic effects, we compared the growth of a cyanobacterial species, Anabaena variabilis and a green alga, Scenedesmus quadricauda, in the presence and absence of macrophyte extracts, exudates and live material. We found a significant negative effect of all treatments on A. variabilis, with the strongest effect produced by C. australis. In contrast, no effect of macrophyte extracts was evident on the growth of S. quadricauda. This absence of effect confirmed earlier findings that macrophyte allelochemicals are specific to particular target organisms. Our results suggest that allelopathic macrophytes have the potential to mitigate phytoplankton blooms in systems dominated by A. variabilis and perhaps other cyanobacteria.

AB - Eutrophication is a major management issue in shallow lakes worldwide. The role of allelopathy in aquatic systems has received increasing attention as a potential means of controlling algal blooms. Macrophytes with allelopathic potential may play an important role in the restoration of eutrophic lakes. Our objective was to investigate the allelopathic effect of the freshwater stonewort, Chara australis, and the submerged angiosperm, Potamogeton crispus, on microalgae. To detect possible allelopathic effects, we compared the growth of a cyanobacterial species, Anabaena variabilis and a green alga, Scenedesmus quadricauda, in the presence and absence of macrophyte extracts, exudates and live material. We found a significant negative effect of all treatments on A. variabilis, with the strongest effect produced by C. australis. In contrast, no effect of macrophyte extracts was evident on the growth of S. quadricauda. This absence of effect confirmed earlier findings that macrophyte allelochemicals are specific to particular target organisms. Our results suggest that allelopathic macrophytes have the potential to mitigate phytoplankton blooms in systems dominated by A. variabilis and perhaps other cyanobacteria.

KW - Allelopathy

KW - Macrophytes

KW - Algal blooms

KW - Cyanobacteria

KW - Eutrophication

KW - Growth inhibition.

U2 - 10.1016/j.aquabot.2013.04.005

DO - 10.1016/j.aquabot.2013.04.005

M3 - Article

VL - 110

SP - 24

EP - 30

JO - Aquatic Botany

JF - Aquatic Botany

SN - 0304-3770

ER -