Show simple item record

dc.contributor.authorGao, Yunni
dc.contributor.authorLu, Jing
dc.contributor.authorOrr, Philip T
dc.contributor.authorChuang, Ann
dc.contributor.authorFranklin, Hannah M
dc.contributor.authorBurford, Michele A
dc.date.accessioned2020-07-17T05:13:10Z
dc.date.available2020-07-17T05:13:10Z
dc.date.issued2020
dc.identifier.issn0041-0101
dc.identifier.doi10.1016/j.toxicon.2020.01.013
dc.identifier.urihttp://hdl.handle.net/10072/395605
dc.description.abstractCyanobacteria species are sensitive to many plant allelochemicals, such as pyrogallol. However, little attention has been paid to the relative effects of these xenobiotics on co-occurring toxigenic and non-toxigenic cyanobacterial strains, despite their co-existence in blooms. Hence, the responses of one toxigenic (TS2) and two non-toxigenic (NS1, NS2) Microcystis aeruginosa strains to pyrogallol were tested under three conditions: mono-culture and co-cultured either directly or separately by dialysis membrane. The study showed that the inhibitory effects of pyrogallol on the growth and photosynthetic yield (Fv/Fm) of either toxigenic or non-toxigenic M. aeruginosa strains were lower in direct and dialysis co-culture conditions than those in mono-culture conditions. This result indicated that chemical-mediated reciprocal effects occur between the co-existing toxigenic and non-toxigenic strains. The toxigenic M. aeruginosa strain was more sensitive to pyrogallol than the non-toxigenic strains in both mono- and co-culture systems, though whether this outcome is due to the former's toxigenic status is unclear. Intracellular microcystin-LR (MC-LR) concentrations of the toxigenic strain decreased after pyrogallol addition in both mono- and co-culture systems, whereas extracellular MC-LR concentrations increased. This finding may reflect the cell damage of M. aeruginosa because of the pyrogallol. At the same initial number of cells, the extracellular MC-LR concentration released from the same amount of TS2 cells in mono-culture was slightly higher than that in dialysis co-culture conditions. Overall, this study shows that plant allelochemicals may have the potential to reduce bloom toxicity by reducing the proportion of toxigenic cyanobacterial strains, and the effects of co-existing strains must be considered when assessing the effects of plant allelochemicals on target strains.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofpagefrom47
dc.relation.ispartofpageto54
dc.relation.ispartofjournalToxicon
dc.relation.ispartofvolume176
dc.subject.fieldofresearchPharmacology and pharmaceutical sciences
dc.subject.fieldofresearchBiochemistry and cell biology
dc.subject.fieldofresearchImmunology
dc.subject.fieldofresearchcode3214
dc.subject.fieldofresearchcode3101
dc.subject.fieldofresearchcode3204
dc.subject.keywordsScience & Technology
dc.subject.keywordsLife Sciences & Biomedicine
dc.subject.keywordsToxicology
dc.subject.keywordsCo-existing strains
dc.subject.keywordsPharmacy
dc.titleEnhanced resistance of co-existing toxigenic and non-toxigenic Microcystis aeruginosa to pyrogallol compared with monostrains
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationGao, Y; Lu, J; Orr, PT; Chuang, A; Franklin, HM; Burford, MA, Enhanced resistance of co-existing toxigenic and non-toxigenic Microcystis aeruginosa to pyrogallol compared with monostrains, Toxicon, 2020, 176, pp. 47-54
dcterms.dateAccepted2020-01-22
dc.date.updated2020-07-17T05:12:07Z
gro.hasfulltextNo Full Text
gro.griffith.authorFranklin, Hannah M.
gro.griffith.authorLu, Jing
gro.griffith.authorBurford, Michele A.


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

  • Journal articles
    Contains articles published by Griffith authors in scholarly journals.

Show simple item record