Concentration of lodine and bromine by plants in the seas of Japan and Okhotsk

Saenko, G. N.; Kravtsova, Y. Y.; Ivanenko, V. V.; Sheludko, S. I.

doi:10.1007/bf00541002

Cited by 80 publications

(28 citation statements)

References 3 publications

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“…So far, D. dudresnayi is the only member of this genus for which oligoalginate recognition and an oxidative burst could be demonstrated (K€ upper et al 2002). Despite the observation of Saenko et al (1978) of an iodine content of 0.12% and a bromine content of 0.13% dry weight in D. viridis from the sea of Okhotsk, virtually nothing is known about the halogen metabolism of Desmarestia species in general -even though it is tempting to speculate that they resemble other, morphologically complex brown algae such as kelps (K€ upper et al 2008) in that respect. Also, gametophytes of D. viridis, D. ligulata, and D. herbacea as well as D. ligulata sporophytes turned out to be susceptible to the oomycete pathogen Eurychasma (M€ uller et al 1999), but in general, the pathologies of Desmarestiales remain poorly studied.…”

Section: Discussionmentioning

confidence: 99%

Ligulate Desmarestia (Desmarestiales, Phaeophyceae) revisited: D. japonica sp. nov. and D. dudresnayi differ from D. ligulata

Yang

Peters²,

Kawai

et al. 2014

Journal of Phycology

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The phylogeny of ligulate and sulfuric‐acid containing species of Desmarestia, occurring worldwide from polar to temperate regions, was revised using a multigenic and polyphasic approach. Sequence data, gametophyte characteristics, and sporophyte morphology support reducing a total of 16 taxa to four different species. (1) D. herbacea, containing broad‐bladed and highly branched forms, has dioecious gametophytes. The three other species have monoecious gametophytes: (2) D. ligulata which is profusely branched and, except for one subspecies, narrow‐bladed, (3) Japanese ligulate Desmarestia, here described as D. japonica sp. nov., which is morphologically similar to D. ligulata but genetically distant from all other ligulate taxa. This species may have conserved the morphology of original ligulate Desmarestia. (4) D. dudresnayi, including unbranched or little branched broad‐bladed taxa. A figure of the holotype of D. dudresnayi, which was lost for decades, was relocated. The taxonomy is complemented by a comparison of internal transcribed spacer and cytochrome c oxidase subunit I (cox1) as potential barcode loci, with cox1 offering good resolution, reflecting species delimitations within the genus Desmarestia.

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Section: Discussionmentioning

confidence: 99%

Ligulate Desmarestia (Desmarestiales, Phaeophyceae) revisited: D. japonica sp. nov. and D. dudresnayi differ from D. ligulata

Yang

Peters²,

Kawai

et al. 2014

Journal of Phycology

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“…As seaweeds concentrate halides from seawater in high concentrations (Saenko et al, 1978) halide limitation probably does not drive the observed decrease. A previous study on the rhodophyte Stictosiphonia arbuscula reported a decreasing ability to regenerate antioxidants (specifically the ascorbate-glutathione antioxidant response) when desiccation persisted for 12 h or more due to nutrient limitation (Burritt et al, 2002), a longer timescale than used in our experiments.…”

Section: E C Leedham Elvidge Et Al: the Effect Of Desiccation On Tmentioning

confidence: 95%

The effect of desiccation on the emission of volatile bromocarbons from two common temperate macroalgae

et al. 2015

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Abstract. Exposure of intertidal macroalgae during low tide has been linked to the emission of a variety of atmospherically-important trace gases into the coastal atmosphere. In recent years, several studies have investigated the role of inorganic iodine and organoiodides as antioxidants and their emission during exposure to combat oxidative stress, yet the role of organic bromine species during desiccation is less well understood. In this study the emission of dibromomethane (CH 2 Br 2 ) and bromoform (CHBr 3 ) during exposure and desiccation of two common temperate macroalgae, Fucus vesiculosus and Ulva intestinalis, is reported. Determination of the impact exposure may have on algal physiological processes is difficult as intertidal species are adapted to desiccation and may undergo varying degrees of desiccation before their physiology is affected. For this reason we include comparisons between photosynthetic capacity (F v /F m ) and halocarbon emissions during a desiccation time series. In addition, the role of rewetting with freshwater to simulate exposure to rain was also investigated. Our results show that an immediate flux of bromocarbons occurs upon exposure, followed by a decline in bromocarbon emissions. We suggest that this immediate bromocarbon pulse may be linked to volatilisation or emissions of existing bromocarbon stores from the algal surface rather than the production of bromocarbons as an antioxidant response.

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“…There are large differences in the iodine concentrations probably due to an inherited ability of each plant group to absorb the element (Shacklette and Cuthbert, 1967). Sacnko et al (1978) have studied the concentration of iodine by plants in the Seas of Japan and Okhotsk. They report brown (Phaeophyte) and red (rhodophyta) algae are richest in iodine.…”

Section: Iodine In Marine Organismsmentioning

confidence: 99%

The geochemistry of iodine — a review

Fuge

Johnson

1986

Environ Geochem Health

379

255

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Iodine has long been recognised as an important element environmentally. Despite this there are many gaps in our knowledge of its geochemistry and even where information is available much of this is based on old data which, in the light of recent data, are suspect.Iodine forms few independent minerals and is unlikely to enter most rock-forming minerals. In igneous rocks its concentration is fairly uniform and averages 0.24 mg/kg. Sedimentary rocks tend to have higher concentrations with average iodine contents of:-recent sediments 5-200 mg/kg, carbonates 2.7 mg/kg, shales 2.3 mg/kg and sandstones 0.8 mg/kg. Organic-rich sediments are particularly enriched in iodine.Soils, generally, are much richer in iodine than the parent rocks with the actual level being decided mainly by soil type and locality. Little soil iodine is water-soluble and much iodine is thought to be associated with organic matter, clays and aluminium and iron oxides. Most iodine in soils is derived from the atmosphere where, in turn, it has been derived from the oceans. Seawater has a mean iodine content of 58 μg/L, while non-saline surface waters have lower and very variable levels. Subsurface brines and mineral waters are generally strongly enriched in iodine.Marine plants are frequently enriched in iodine while terrestrial plants have generally low contents. Iodine is essential for all mammals.Consideration of the geochemical cycle of iodine reveals that its transfer from the oceans to the atmosphere is probably the most important process in its geochemistry.

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Concentration of lodine and bromine by plants in the seas of Japan and Okhotsk

Cited by 80 publications

References 3 publications

Ligulate Desmarestia (Desmarestiales, Phaeophyceae) revisited: D. japonica sp. nov. and D. dudresnayi differ from D. ligulata

Ligulate Desmarestia (Desmarestiales, Phaeophyceae) revisited: D. japonica sp. nov. and D. dudresnayi differ from D. ligulata

The effect of desiccation on the emission of volatile bromocarbons from two common temperate macroalgae

The geochemistry of iodine — a review

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