dc.contributor.author | Gao, Yunni | |
dc.contributor.author | Lu, Jing | |
dc.contributor.author | Orr, Philip T | |
dc.contributor.author | Chuang, Ann | |
dc.contributor.author | Franklin, Hannah M | |
dc.contributor.author | Burford, Michele A | |
dc.date.accessioned | 2020-07-17T05:13:10Z | |
dc.date.available | 2020-07-17T05:13:10Z | |
dc.date.issued | 2020 | |
dc.identifier.issn | 0041-0101 | |
dc.identifier.doi | 10.1016/j.toxicon.2020.01.013 | |
dc.identifier.uri | http://hdl.handle.net/10072/395605 | |
dc.description.abstract | Cyanobacteria 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.peerreviewed | Yes | |
dc.language | English | |
dc.language.iso | eng | |
dc.publisher | Elsevier | |
dc.relation.ispartofpagefrom | 47 | |
dc.relation.ispartofpageto | 54 | |
dc.relation.ispartofjournal | Toxicon | |
dc.relation.ispartofvolume | 176 | |
dc.subject.fieldofresearch | Pharmacology and pharmaceutical sciences | |
dc.subject.fieldofresearch | Biochemistry and cell biology | |
dc.subject.fieldofresearch | Immunology | |
dc.subject.fieldofresearchcode | 3214 | |
dc.subject.fieldofresearchcode | 3101 | |
dc.subject.fieldofresearchcode | 3204 | |
dc.subject.keywords | Science & Technology | |
dc.subject.keywords | Life Sciences & Biomedicine | |
dc.subject.keywords | Toxicology | |
dc.subject.keywords | Co-existing strains | |
dc.subject.keywords | Pharmacy | |
dc.title | Enhanced resistance of co-existing toxigenic and non-toxigenic Microcystis aeruginosa to pyrogallol compared with monostrains | |
dc.type | Journal article | |
dc.type.description | C1 - Articles | |
dcterms.bibliographicCitation | Gao, 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.dateAccepted | 2020-01-22 | |
dc.date.updated | 2020-07-17T05:12:07Z | |
gro.hasfulltext | No Full Text | |
gro.griffith.author | Franklin, Hannah M. | |
gro.griffith.author | Lu, Jing | |
gro.griffith.author | Burford, Michele A. | |