Stress Resistance and Disease Resistance in Seaweeds: The Role of Reactive Oxygen Metabolism

Dring, M. J.

doi:10.1016/s0065-2296(05)43004-9

Cited by 122 publications

(67 citation statements)

References 97 publications

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“…At low temperatures enzyme activities and turnover velocity of the D1 reaction center protein in photosystem II are reduced (Andersson et al 1992;Aro et al 1993), which may result in increased electron pressure in photosynthesis and ultimately in the generation of reactive oxygen species (Dring 2006). The consequences of increased oxidative stress are chronic photoinhibition/photoinactivation, bleaching of photosynthetic pigments, peroxidation of membrane lipids, and enhanced degradation of D1 protein (see Chap.…”

Section: Effect Of Salinity Temperature and Desiccation On Supra-anmentioning

confidence: 99%

Seaweeds and Their Communities in Polar Regions

2012

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Section: Effect Of Salinity Temperature and Desiccation On Supra-anmentioning

confidence: 99%

Seaweeds and Their Communities in Polar Regions

2012

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“…It is now recognized also as a key element of plant (Wojtaszek 1997, Mittler et al 2004) and algal , Dring 2005, Cosse et al 2007) defense, where it is considered both as a rapid defense response and an internal emergency signal. It consists of the rapid and massive production of ROS such as superoxide (O 2 -), hydrogen peroxide (H 2 O 2 ), and hydroxyl radicals (…”

Section: Introductionmentioning

confidence: 99%

Prostaglandin A₂triggers a strong oxidative burst in Laminaria: a novel defense inducer in brown algae?

Zambounis¹,

Gaquerel²,

Strittmatter³

et al. 2012

ALGAE

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We report an oxidative burst triggered by prostaglandin A 2 (PGA 2 ) in the brown algal kelp Laminaria digitata, constituting the first such discovery in an alga and the second finding of an oxidative burst triggered by a prostaglandin in a living organism. The response is more powerful than the oxidative burst triggered by most other chemical elicitors in Laminaria. Also, it is dose-dependent and cannot be inhibited by diphenylene iodonium, suggesting that another source than NAD(P)H oxidase is operational in the production of reactive oxygen species. Despite the very strong oxidative response, rather few effects at other levels of signal transduction pathways could be identified. PGA 2 does not increase lipolysis (free fatty acids) in Laminaria, and only one oxylipin (15-hydroxyeicosatetraenoic acid; 15-HETE) was found to be upregulated in Laminaria. In a subsequent set of experiments in the genome model Ectocarpus siliculosus, none of 5 selected candidate genes, all established participants in various stress responses, showed any significant differences in their expression profiles.Key Words: Cyclopentenone; diphenylene iodonium; Phaeophyta; polyunsaturated fatty acids; prostaglandin A 2 INTRODUCTIONBrown algae (Phaeophyta) make up most of the benthic biomass on temperate and polar rocky shores. Kelp forests are key ecosystems of such coastal areas and they constitute habitat and breeding grounds for a very large diversity of marine life forms -besides offering a physical protection by providing a wave energy-absorbing buffer for coasts. Brown algae belong to a lineage that has been evolving independently of other major photosynthetic Received December 20, 2011, Accepted February 23, 2012 *Corresponding Author E-mail: fkuepper@abdn.ac.uk Tel: +44-1224+44- -274490, Fax: +44-1224 This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. (Reymond and Farmer 1998, Orozco-Cárdenas et al. 2001).The oxidative burst was initially discovered in human macrophages (Baldridge and Gerard 1933). It is now recognized also as a key element of plant (Wojtaszek 1997, Mittler et al. 2004) and algal , Dring 2005, Cosse et al. 2007) defense, where it is considered both as a rapid defense response and an internal emergency signal. It consists of the rapid and massive production of ROS such as superoxide (O 2 -), hydrogen peroxide (H 2 O 2 ), and hydroxyl radicals (• OH)which are likely produced via the interaction of plasma membrane-associated NAD(P)H oxidases (Wojtaszek 1997). Hence, pathogen attack triggers both the production of ROS and the oxidation cascade of fatty acids leading to the production of bioactive oxylipins in plants. In algal systems, the oxidative burst was initially discovered in response to injury in a red alga (Collén et al. 1994). Over the last decade, oxidative...

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“…Cellular sources and sinks for ROS are well understood for terrestrial plants (Smirnoff 2005) and marine algae (Dring 2006). Our work centers on the role played by plasma membrane Real-time detection of reactive oxygen species generation by marine phytoplankton using flow injection-chemiluminescence redox processes in ROS production and the potential function(s) of this process, such as acquisition of nutrients and redox homeostasis under physiological and physical stress.…”

Section: Introductionmentioning

confidence: 99%

Real‐time detection of reactive oxygen species generation by marine phytoplankton using flow injection—chemiluminescence

Milne

Davey

Worsfold

et al. 2009

Limnology & Ocean Methods

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Little is known about the biological production of reactive oxygen species (ROS) ). An initial examination of the effect of changing light intensity showed that a rapid light-induced production of both O 2 -and H 2 O 2 by T. weissflogii cells could be readily detected. Moreover, this production was proportional to the biomass present on the flushed filter. These methods enable the monitoring of real-time fluctuations of biological ROS production in response to changing environmental conditions, and therefore facilitate analysis of the biotic component of ROS production and the subsequent impacts on chemical speciation of nutrients and trace metals in aquatic ecosystems.

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Stress Resistance and Disease Resistance in Seaweeds: The Role of Reactive Oxygen Metabolism

Cited by 122 publications

References 97 publications

Seaweeds and Their Communities in Polar Regions

Seaweeds and Their Communities in Polar Regions

Prostaglandin A₂triggers a strong oxidative burst in Laminaria: a novel defense inducer in brown algae?

Real‐time detection of reactive oxygen species generation by marine phytoplankton using flow injection—chemiluminescence

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Stress Resistance and Disease Resistance in Seaweeds: The Role of Reactive Oxygen Metabolism

Cited by 122 publications

References 97 publications

Seaweeds and Their Communities in Polar Regions

Seaweeds and Their Communities in Polar Regions

Prostaglandin A2triggers a strong oxidative burst in Laminaria: a novel defense inducer in brown algae?

Real‐time detection of reactive oxygen species generation by marine phytoplankton using flow injection—chemiluminescence

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Prostaglandin A₂triggers a strong oxidative burst in Laminaria: a novel defense inducer in brown algae?