Infochemicals released by Daphnia magna fed on Microcystis aeruginosa affect mcyA gene expression

Pineda-Mendoza, Rosa María; Zúñiga, Gerardo; Martínez‐Jerónimo, Fernando

doi:10.1016/j.toxicon.2014.01.008

Cited by 25 publications

(16 citation statements)

References 46 publications

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“…Consequently, induction of tolerance to toxic cyanobacteria in offspring produced by Daphnia mothers fed non‐toxic Microcystis , as shown in the present study, could be an important mechanism for survival of Daphnia populations during a developing toxic bloom. Alternatively, Microcystis could sense Daphnia grazing and increase mcy gene expression, and consequently, microcystin production could be used as a defence mechanism against grazing (Pineda‐Mendoza, Zúñiga & Martínez‐Jerónimo, ). We further speculate that a shift in the Microcystis subpopulation from non‐toxic to toxic strains could be due to re‐activation of microcystin synthesis genes in non‐toxic strains stimulated by Daphnia grazing, as Rantala et al .…”

Section: Discussionmentioning

confidence: 99%

Maternal consumption of non‐toxic Microcystis by Daphnia magna induces tolerance to toxic Microcystis in offspring

Lyu

Guan

et al. 2015

Freshwater Biology

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1. Freshwater cyanobacterial blooms are a worldwide environmental issue. These blooms often comprise both non-toxic and toxic species and strains. Populations of some zooplankton, including Daphnia, have been shown to adapt locally to toxic Microcystis through maternal effects. However, Microcystis populations vary spatially and temporally in the absolute and relative abundances of non-toxic and toxic genotypes. 2. We examined variation in induction of tolerance to toxic cyanobacteria in offspring from two Daphnia magna clones (JS and AH) fed diets containing Scenedesmus by itself or in combination with either a non-toxic or a toxic clone of Microcystis aeruginosa. The diets containing Microcystis included relatively more cyanobacteria within each week of the 3 week experiment (week 1-10%, week 2-20%, week 3-40%). Daphnia neonates were collected from these three treatments at the end of the third week and fed a diet containing Scenedesmus and toxic Microcystis for 3 weeks before a suite of lifehistory, physiological and biochemical measurements were made on the surviving animals. 3. Neonates from mothers fed toxic and non-toxic Microcystis showed enhanced growth and reproduction compared to neonates produced from mothers fed only Scenedesmus. Our results showed that Daphnia neonates could be induced to tolerate toxic cyanobacteria when their mothers were fed diets containing non-toxic or toxic strains of cyanobacteria. Furthermore, elevated RNA-DNA ratios, superoxide dismutase activity and catalase activity in neonates fed diets containing non-toxic or toxic Microcystis clones suggested that the mechanisms behind these changes involved processes associated with metabolism and antioxidation. 4. Our study shows that non-toxic cyanobacteria can induce tolerance to toxic cyanobacteria and further elucidates the general importance of maternal effects on tolerance of cyanobacteria in herbivorous zooplankton.

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Section: Discussionmentioning

confidence: 99%

Maternal consumption of non‐toxic Microcystis by Daphnia magna induces tolerance to toxic Microcystis in offspring

Lyu

Guan

et al. 2015

Freshwater Biology

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“…; Pineda‐Mendoza et al . ). This finding indirectly supports the major role of the changing Microcystis population in affecting microcystin dynamics in an ecosystem.…”

Section: Discussionmentioning

confidence: 97%

Relative importance of Microcystis abundance and diversity in determining microcystin dynamics in Lake Erie coastal wetland and downstream beach water

Rea

et al. 2015

J Appl Microbiol

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“…Pyrogallol stress, a potent allelochemical, up-regulated mcyB gene expression in Microcystis (Shao et al, 2009). On consumption by Daphnia, mcyA gene expression was up-regulated in Microcystis and production of MCs increased (Pineda-Mendoza et al, 2014).…”

Section: Introductionmentioning

confidence: 98%

Microcystin-degrading bacteria affect mcyD expression and microcystin synthesis in Microcystis spp.

Zhu

Zuo

Song

et al. 2016

Journal of Environmental Sciences

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Infochemicals released by Daphnia magna fed on Microcystis aeruginosa affect mcyA gene expression

Cited by 25 publications

References 46 publications

Maternal consumption of non‐toxic Microcystis by Daphnia magna induces tolerance to toxic Microcystis in offspring

Maternal consumption of non‐toxic Microcystis by Daphnia magna induces tolerance to toxic Microcystis in offspring

Relative importance of Microcystis abundance and diversity in determining microcystin dynamics in Lake Erie coastal wetland and downstream beach water

Microcystin-degrading bacteria affect mcyD expression and microcystin synthesis in Microcystis spp.

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