Reactive oxygen species as a marine grazing defense: H2O2 and wounded Ascoseira mirabilis both inhibit feeding by an amphipod grazer

McDowell, Ruth E.; Amsler, Charles D.; McClintock, James B.; Baker, Bill J.

doi:10.1016/j.jembe.2014.04.012

Cited by 14 publications

(19 citation statements)

References 48 publications

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“…The brown alga Ascoseira mirabilis Skottsberg, which released a burst of non‐H 2 O 2 ROS after wounding, inhibited grazing by the amphipod Gondogeneia antarctica Chevreux (McDowell et al. ). Thus, grazing by L. obtusata may have triggered a wound response and subsequent release of ROS by U. lactuca that resulted in its toxic effect.…”

Section: Discussionmentioning

confidence: 99%

“…In this study, U. lactuca remained submerged at stable, ambient water temperatures and irradiance levels below those that resulted in high H 2 O 2 release by another ulvoid species (Coll en and Pedersen 1996), making environmental stress an unlikely trigger of ROS. The brown alga Ascoseira mirabilis Skottsberg, which released a burst of non-H 2 O 2 ROS after wounding, inhibited grazing by the amphipod Gondogeneia antarctica Chevreux (McDowell et al 2014). Thus, grazing by L. obtusata may have triggered a wound response and subsequent release of ROS by U. lactuca that resulted in its toxic effect.…”

Section: Discussionmentioning

confidence: 99%

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Differential toxic effects of Ulva lactuca (Chlorophyta) on the herbivorous gastropods, Littorina littorea and L. obtusata (Mollusca)

Peckol

Putnam

2017

Journal of Phycology

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Members of the genus Ulva are widespread and abundant in intertidal and shallow subtidal areas but there are conflicting data regarding susceptibility to herbivory. While some studies have documented that Ulva spp. were favored by a diversity of marine herbivores, other work has revealed herbivore deterrence. We investigated grazing and growth rates of the littorinid species, Littorina littorea and L. obtusata, when offered Fucus vesiculosus, Ascophyllum nodosum, Ulva lactuca, and Chondrus crispus, highlighting distinctive vulnerabilities to toxic effects of U. lactuca. Ulva lactuca was the preferred food of L. littorea, while L. obtusata showed no grazing on this ephemeral algal species. In contrast, F. vesiculosus was highly preferred by L. obtusata. Although L. littorea demonstrated a grazing preference for U. lactuca, growth rate of this gastropod species was nearly 3× greater when fed F. vesiculosus, suggesting a non-lethal, negative effect of U. lactuca on L. littorea with long-term exposure. Mortality of L. obtusata ranged from 0% to 100% when held in the presence of various Ulva densities for 1 week, and Ulva exudate depressed herbivory of this gastropod. We conclude that the water-soluble, toxic exudate produced by U. lactuca in response to herbivory had allelochemical properties, and may contain a cleavage product (acrylic acid) of dimethylsulfoniopropionate or reactive oxygen species (i.e., H O ). Observed differences in susceptibility to Ulva toxicity by the littorinid species may be related to generalist versus specialist feeding and habitat strategies.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Differential toxic effects of Ulva lactuca (Chlorophyta) on the herbivorous gastropods, Littorina littorea and L. obtusata (Mollusca)

Peckol

Putnam

2017

Journal of Phycology

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“…, Lou and Baldwin , McDowell et al. ). Diurnal cycles in grazing are well known, with most herbivores actively feeding exclusively during the night, day, or twilight periods.…”

Section: Discussionmentioning

confidence: 99%

“…Wound-induced ROS may be important as a defense against grazers as well (Ramputh et al 2002, Lou and Baldwin 2006, McDowell et al 2014b. Diurnal cycles in grazing are well known, with most herbivores actively feeding exclusively during the night, day, or twilight periods.…”

Section: Wound-induced Oxidative Burst Depends On Lightmentioning

confidence: 99%

The immediate wound‐induced oxidative burst of Saccharina latissima depends on light via photosynthetic electron transport

McDowell

Amsler

et al. 2015

Journal of Phycology

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Reactive oxygen species (ROS) produced by an oxidative burst are an important component of the wound response in algae, vascular plants, and animals. In all taxa, ROS production is usually attributed solely to a defense-related enzyme like NADPH-oxidase (Nox). However, here we show that the initial, wound-induced oxidative burst of the kelp Saccharina latissima depends on light and photosynthetic electron transport. We measured oxygen evolution and ROS production at different light levels and in the presence of a photosynthetic inhibitor, and we used spin trapping and electron paramagnetic resonance as an orthogonal method. Using an in vivo chemical probe, we provide data suggesting that wound-induced ROS production in two distantly related and geographically isolated species of Antarctic macroalgae may be light dependent as well. We propose that electron transport chains are an important and as yet unaddressed component of the wound response, not just for photosynthetic organisms, but for animals via mitochondria as well. This component may have been obscured by the historic use of diphenylene iodonium, which inhibits not only Noxes but also photosynthetic and respiratory electron transport as well. Finally, we anticipate physiological and/or ecological consequences of the light dependence of macroalgal wound-induced ROS since pathogens and grazers do not disappear in the dark.

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“…Oxidative damage to DNA by H 2 O 2 is thought to occur through ferryl radical formed when H 2 O 2 reacts with DNA-associated iron (Linley et al, 2012). H 2 O 2 may also initiate lethal cellular cascades such as lipid peroxidation and apoptotic cell death (Apel and Hirt, 2004;Repetto et al, 2012), and is often used in interactions between organisms as a grazer and pathogen deterrent (McDowell et al, 2014).…”

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confidence: 99%

Rapid Hydrogen Peroxide Release during Coral-Bacteria Interactions

2016

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∼10 mm) was 200-600 pmol, which may build up to a concentration of ∼20 µM in the coral diffusive boundary layer. H 2 O 2 concentrations above 10 µM resulted in significant mortality of the coral pathogen Vibrio coralliilyticus, suggesting that the released H 2 O 2 may act as a bactericide. It is thus far unclear if this H 2 O 2 release is part of an oxidative burst response, but it's occurrence strongly indicates that corals sense and chemically react toward bacteria.

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Reactive oxygen species as a marine grazing defense: H2O2 and wounded Ascoseira mirabilis both inhibit feeding by an amphipod grazer

Cited by 14 publications

References 48 publications

Differential toxic effects of Ulva lactuca (Chlorophyta) on the herbivorous gastropods, Littorina littorea and L. obtusata (Mollusca)

Differential toxic effects of Ulva lactuca (Chlorophyta) on the herbivorous gastropods, Littorina littorea and L. obtusata (Mollusca)

The immediate wound‐induced oxidative burst of Saccharina latissima depends on light via photosynthetic electron transport

Rapid Hydrogen Peroxide Release during Coral-Bacteria Interactions

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