Influence of UV-B Supplemental Radiation on Growth and Pigment Content in Suaeda Maritima L.

Ravindran, K. C.; Kumar, Neelesh; Amirthalingam, V.; Ranganathan, Radha; Chellappan, K. P.; Kulandaivelu, G.

doi:10.1023/a:1012404523757

Cited by 12 publications

(4 citation statements)

References 14 publications

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“…Anthocyanin concentration was significantly increased in UV-B radiation treatment when compared to control seedlings. Several studies have shown that increased anthocyanin was mainly due to UV-B irradiation effect (Ntefido and Manetas,1996;Ravindran et al, 2001). Ravindran et al, (2001) demonstrated over 171% increase in anthocyanin content in a halophyte species, Suaeda maritima under field study.…”

Section: Uv-absorbing Pigmentsmentioning

confidence: 97%

“…Several studies have shown that increased anthocyanin was mainly due to UV-B irradiation effect (Ntefido and Manetas,1996;Ravindran et al, 2001). Ravindran et al, (2001) demonstrated over 171% increase in anthocyanin content in a halophyte species, Suaeda maritima under field study. Ambasht and Agarwal (1998) observed a more than 275% increase in the anthocyanin content in maize.…”

Section: Uv-absorbing Pigmentsmentioning

confidence: 97%

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Effect of ultraviolet-B radiation on biochemical and antioxidant defence system in <i>Indigofera tinctoria</i> L. seedlings

Ravindran¹,

Indrajith²,

Pratheesh³

et al. 2010

Int. J. Eng. Sci. Tech

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The stratospheric ozone depletion and enhanced solar ultraviolet-B (UV-B) irradiance may have adverse impact on living organisms. The impact of UV-B radiation (UV-B, 280~320nm) on growth, biochemical and antioxidant enzyme activity was studied in Indigofera tinctoria (L.) seedling, commonly used as a green manure. The supplementary UV-B radiation significantly decreased the growth, development and changes in UV-B absorbing compounds such as anthocyanin and flavonoids. The antioxidant enzymes were unaffected and showed an enhanced activities of peroxidase, superoxide dismutase, polyphenoloxidase and phenylalanine ammonia-lyase except catalase in UV-B irradiated seedling. Indigofera tinctoria seedling tries to counteract high level of reactive oxygen species produced under UV-B stress through the increased activities of antioxidant enzyme. The results suggest that Indigofera tinctoria is resistant to UV-B radiation damage and the possible negative effect of additional UV-B radiation on the growth of seedling may have been effectively balanced by the UV-B radiation stress through increase in UV-absorbing compound and antioxidant enzymes.

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Section: Uv-absorbing Pigmentsmentioning

confidence: 97%

Section: Uv-absorbing Pigmentsmentioning

confidence: 97%

Effect of ultraviolet-B radiation on biochemical and antioxidant defence system in <i>Indigofera tinctoria</i> L. seedlings

Ravindran¹,

Indrajith²,

Pratheesh³

et al. 2010

Int. J. Eng. Sci. Tech

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“…Photosynthesis and tiller growth of the salt marsh grass Elymus athericus were not negatively affected by 14 days exposure to elevated UV‐B levels (16.8 kJ m −2 day −1 ) (51) in a greenhouse experiment, although negative effects have been found after 42 days (52). Simulating daily dosage of UV‐B radiation expected with 20% stratospheric ozone depletion at a study site in India (11° N), Ravindaran et al (53) found that exposure to UV‐B (9 days, 12 kJ m −2 day −1 ) significantly reduced shoot biomass (77.5% in relation to UV‐B protected plants) of the seedlings of annual Suaeda maritima (Chenopodiaceae).…”

Section: Discussionmentioning

confidence: 99%

“…The absorption peaks at 332 nm from the spectrophotometric analyses and between 325 and 357 from the chromatographic analyses of seedlings and adult S. bigelovii plants from Puerto Rico are characteristic absorption features exhibited by flavonoids (25,54,55). Flavonoids are known for their protective role against detrimental effects of UV‐B radiation (55,56) and an increase in 130% of flavonoid content was found by Ravindran et al (53) when exposing the salt marsh plant Suaeda maritima to elevated UV‐B dosages.…”

Section: Discussionmentioning

confidence: 99%

Effect of Ultraviolet‐B Radiation on Salt Marsh Vegetation: Trends of the Genus Salicornia along the Americas

Costa

Armstrong

Detrés

et al. 2006

Photochem & Photobiology

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The effects of natural UV-B radiation on growth, photosynthetic and photoprotective pigment composition of different Salicornia species were analyzed in salt marshes at three different sites along the Americas (Puerto Rico, southern Brazil and Patagonia, Argentina). Plants were exposed to different levels of UV-B radiation for 1-2 years in situ as well as in outdoor garden UV-B exclusion experiments. Different UV-B levels were obtained by covering plants with UV-B opaque (blocked 93-100% of ambient UV-B) and UV-B attenuating (near-ambient) filters (reduced 20-25% of UV-B). Unfiltered plants were exposed to natural irradiance. UV-B filters had significant effects on temperature and photosynthetic pigments (due to changes in PAR; 400-700 nm). The growth of Salicornia species was inhibited after 35 to 88 days of exposure to mean UV-B radiation dosages between 3.6 and 4.1 kJ m(-2) day(-1). The highest number of branches on the main shoot (S. bigelovii and S. gaudichaudiana) and longest total length of the branches (S. gaudichaudiana) were observed in the UV-B opaque treatment. Salicornia species responded to increasing levels of UV-B radiation by increasing the amount of UV-B absorbing pigments up to 330%. Chromatographic analyses of seedlings and adult S. bigelovii plants found seven different UV-B absorbing flavonoids that are likely to serve as UV-B filtering pigments. No evidence of differential sensitivity or resilience to UV-B radiation was found between Salicornia species from low-mid latitudes and a previously published study of a high-latitude population.

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Investigation of supplemental ultraviolet-B-induced changes in antioxidative defense system and leaf proteome in radish (Raphanus sativus L. cv Truthful): an insight to plant response under high oxidative stress

et al. 2010

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Impact of supplemental UV-B (sUV-B) has been investigated on photosynthetic pigments, antioxidative enzymes, metabolites, and protein profiling of radish plants under realistic field conditions. Exposure of sUV-B leads to oxidative damage in plants. However, plants possess a number of UV-protection mechanisms including a stimulation of antioxidant defense system. It caused alteration in reactive oxygen species metabolism primarily by decreasing catalase activity vis-à-vis enhanced activities of other enzymatic (superoxide dismutase, ascorbate peroxidase, and glutathione reductase) and non-enzymatic (ascorbic acid) antioxidants. Qualitative analysis of samples also showed significant reductions in photosynthetic pigments and protein content. After sUV-B exposure, protein profile showed differences mainly at eight points--126.8, 84.8, 71.9, 61.5, 47.8, 40.6, 38.9, and 17.5 kDa, whereas protein(s) of 38.9 kDa showed increment. Results of the present investigation clearly showed the adverse effect of sUV-B on total biomass at final harvest.

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Influence of UV-B Supplemental Radiation on Growth and Pigment Content in Suaeda Maritima L.

Cited by 12 publications

References 14 publications

Effect of ultraviolet-B radiation on biochemical and antioxidant defence system in <i>Indigofera tinctoria</i> L. seedlings

Effect of ultraviolet-B radiation on biochemical and antioxidant defence system in <i>Indigofera tinctoria</i> L. seedlings

Effect of Ultraviolet‐B Radiation on Salt Marsh Vegetation: Trends of the Genus Salicornia along the Americas

Investigation of supplemental ultraviolet-B-induced changes in antioxidative defense system and leaf proteome in radish (Raphanus sativus L. cv Truthful): an insight to plant response under high oxidative stress

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