Transglutaminase activity decrease during acclimation to hyposaline conditions in marine seaweed Grateloupia doryphora (Rhodophyta, Halymeniaceae)

García‐Jiménez, Pilar; Just, Pilar M.; Delgado, Ancor M.; Robaina, Rafael R.

doi:10.1016/j.jplph.2006.05.018

Cited by 35 publications

(18 citation statements)

References 12 publications

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“…They suggested that free-Spd, free-Spm and PIS-bound Put facilitated the osmotic stress tolerance of wheat seedlings. Garcıa-Jimenez et al 38 reported that a moderate hyposaline shock caused an increase in the free fraction of Put, Spd and Spm, mainly due to a decrease in TGase activity, together with an apparent increase in the L-arginine dependent PAs synthesis (ODC and arginase decreased, and ADC slightly increased).…”

Section: Polyamines and Abiotic Stress Tolerance In Plantsmentioning

confidence: 99%

Polyamines and abiotic stress tolerance in plants

Gill

Tuteja

2010

Plant Signaling & Behavior

652

367

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Environmental stresses including climate change, especially global warming, are severely affecting plant growth and productivity worldwide. It has been estimated that two-thirds of the yield potential of major crops are routinely lost due to the unfavorable environmental factors. On the other hand, the world population is estimated to reach about 10 billion by 2050, which will witness serious food shortages. Therefore, crops with enhanced vigour and high tolerance to various environmental factors should be developed to feed the increasing world population. Maintaining crop yields under adverse environmental stresses is probably the major challenge facing modern agriculture where polyamines can play important role. Polyamines (PAs)(putrescine, spermidine and spermine) are group of phytohormone-like aliphatic amine natural compounds with aliphatic nitrogen structure and present in almost all living organisms including plants. Evidences showed that polyamines are involved in many physiological processes, such as cell growth and development and respond to stress tolerance to various environmental factors. In many cases the relationship of plant stress tolerance was noted with the production of conjugated and bound polyamines as well as stimulation of polyamine oxidation. Therefore, genetic manipulation of crop plants with genes encoding enzymes of polyamine biosynthetic pathways may provide better stress tolerance to crop plants. Furthermore, the exogenous application of PAs is also another option for increasing the stress tolerance potential in plants. Here, we have described the synthesis and role of various polyamines in abiotic stress tolerance in plants.

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Section: Polyamines and Abiotic Stress Tolerance In Plantsmentioning

confidence: 99%

Polyamines and abiotic stress tolerance in plants

Gill

Tuteja

2010

Plant Signaling & Behavior

652

367

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“…In algae, there are data on the endogenous levels of polyamines in several green, red and brown algae (Badini et al 1994;Marián et al 2000a). These polyamines are involved in cell division (Cohen et al 1984;García-Jiménez et al 1998;Marián et al 2000b;Voigt et al 2000;Theiss et al 2002), and in response to hyposaline stress (Lee 1998;García-Jiménez et al 2007).…”

Section: Introductionmentioning

confidence: 99%

The polyamine spermine induces cystocarp development in the seaweed Grateloupia (Rhodophyta)

2007

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Polyamines such as putrescine, spermidine and spermine are ubiquitous aliphatic amines involved in reproductive events in plants and algae, and first become evident through changes in endogenous levels during reproductive development. To examine whether the differences observed in polyamines, during carposporogenesis, in the red alga Grateloupia, followed a specific pattern as is seen in other organisms, infertile axes (i.e. not showing cystocarps) were excised from the same holdfast of female fertilized individuals (i.e. showing cystocarps in other axes), and cultivated until the cystocarps became visible. Changes in the endogenous levels of free putrescine, spermidine and spermine were monitored over the 8 days of culture. The activity of enzymes related to polyamine metabolism, such as L-ornithine decarboxylase (ODC), diamine oxidase and polyamine oxidase, was measured at the beginning and end of the experimental period. Up to 50% of the infertile axes became fertile and produced cystocarps at a density of 1.91 ± 0.1 cystocarps mm À2 after 8 days. The endogenous content of spermine increased markedly over the first 5 days of culture, then decreased to the initial level by day 8.Spermidine followed a similar pattern to spermine, whereas putrescine remained at high levels, until day 5 when it decreased abruptly. The activity of ODC was less on day 8 than on day 0, whereas the activities of diamine oxidase and polyamine oxidase increased. In parallel experiments with explants from infertile axes, exogenously added spermine (10 À6 M) increased the number of cystocarps, and reversed the effect of cyclohexylamine (CHA), which is known to inhibit polyamine synthesis in Grateloupia. Serial sectioning and microscopic observation of specimens from explants cultivated in 10 À6 M spermine indicated that cystocarp development was induced. The results suggest that, during transition from infertile to fertile spermine is accumulated, thus favouring the development of cystocarps, given the presumed role of spermine as an inducing agent.

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“…Other studies involving red seaweeds have demonstrated the metabolism of polyamines mediated by activities of ornithine decarboxylase, diamine oxidase, and polyamine oxidase (Garcia‐ Jimenez et al. , Sacramento et al. , Sacramento et al.…”

Section: Resultsmentioning

confidence: 99%

Production of volatiles by the red seaweed Gelidium arbuscula (Rhodophyta): emission of ethylene and dimethyl sulfide

García‐Jiménez

Brito-Romano

Robaina

2013

Journal of Phycology

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The effects of different light conditions and exogenous ethylene on the emission of volatile compounds from the alga Gelidium arbuscula Bory de Saint-Vincent were studied. Special emphasis was placed on the possibility that the emission of ethylene and dimethyl sulfide (DMS) are related through the action of dimethylsulfoniopropionate (DMSP) lyase. The conversion of DMSP to DMS and acrylate, which is catalyzed by DMSP lyase, can indirectly support the synthesis of ethylene through the transformation of acrylate to ethylene. After mimicking the desiccation of G. arbuscula thalli experienced during low tides, the volatile compounds emitted were trapped in the headspace of 2 mL glass vials for 1 h. Two methods based on gas chromatography/mass spectrometry revealed that the range of organic volatile compounds released was affected by abiotic factors, such as the availability and spectral quality of light, salinity, and exogenous ethylene. Amines and methyl alkyl compounds were produced after exposure to white light and darkness but not after exposure to exogenous ethylene or red light. Volatiles potentially associated with the oxidation of fatty acids, such as alkenes and low-molecular-weight oxygenated compounds, accumu-lated after exposure to exogenous ethylene and red light. Ethylene was produced in all treatments, especially after exposure to exogenous ethylene. Levels of DMS, the most abundant sulfur-compound that was emitted in all of the conditions tested, did not increase after incubation with ethylene. Thus, although DMSP lyase is active in G. arbuscula, it is unlikely to contribute to ethylene synthesis. The generation of ethylene and DMS do not appear to be coordinated in G. arbuscula.

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Transglutaminase activity decrease during acclimation to hyposaline conditions in marine seaweed Grateloupia doryphora (Rhodophyta, Halymeniaceae)

Cited by 35 publications

References 12 publications

Polyamines and abiotic stress tolerance in plants

Polyamines and abiotic stress tolerance in plants

The polyamine spermine induces cystocarp development in the seaweed Grateloupia (Rhodophyta)

Production of volatiles by the red seaweed Gelidium arbuscula (Rhodophyta): emission of ethylene and dimethyl sulfide

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