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1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Effect of exclusion of ambient solar UVA/B components on growth and antioxidant response of cotton ( Gossypium hirsutum L.)

100%
Kataria S., Dehariya P., Guruprasad K. N., Pandey G. P.
Acta Biologica Cracoviensia. Series Botanica
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2012
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tom 54
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nr 2
The influence of ambient solar UV-A or UV-B radiation on growth responses was investigated in three varieties of cotton (Gossypium hirsutum L.) after exclusion of solar UV-A/B radiation: JK-35, IH-63 and Khandwa-2. Cotton plants were grown from seeds in UV-exclusion chambers lined with selective UV filters to exclude either UV-B (280–315 nm) or UV-A/B (280–400 nm) from the solar spectrum under field conditions. Excluding UV-B and UV-A/B significantly increased plant height, leaf area and dry weight accumulation in all three varieties of cotton. The varieties differed considerably in their sensitivity to ambient UV-A/B. Khandwa-2 was most sensitive and JK-35 least sensitive to ambient solar UV. We monitored the activity of the antioxidant enzymes superoxide dismutase (SOD), ascorbic acid peroxidase (APX), glutathione reductase (GR) and guaiacol peroxidase (GPX), as well as the level of the antioxidant ascorbic acid (ASA), in primary leaves of the most UV-sensitive variety (Khandwa-2). The level of UV-B-absorbing substances was significantly decreased by exclusion of solar UV-B and UV-A/B. Exclusion of solar UV decreased the activity of all the antioxidant enzymes monitored and the level of ascorbic acid versus control plants (+UV-A/B) grown under filters transparent to solar UV. Reduction of the antioxidant defense after UV exclusion indicates that ambient solar UV exerts significant stress and induces some reactive oxygen species to accumulate, which in turn retards the growth and development of cotton plants. Ambient solar UV stresses cotton plants, shifting their metabolism towards defense against solar UV. Exclusion of solar UV eliminates the need for that defense and leads to enhancement of primary metabolism.
2
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Phenylalanine ammonia lyase under combined effects of enhanced UV-B radiation and allelopathy stress

100%
Jozwiak-Zurek A., Kozlowska M., Nuc K.
Acta Biologica Cracoviensia. Series Botanica
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2011
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tom 53
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nr 2
This study examined the effects of UV-B radiation and allelochemical stress induced by ferulic acid (FA) on the activity of phenylalanine ammonia lyase (PAL; EC 4.3.1.5) at metabolic and molecular levels in two cucumber genotypes differing in tolerance to cold and disease, in order to determine any interaction between stress effects and genotype response. Stresses were applied simultaneously, sequentially, and singly. In both genotypes, several days of UV radiation retarded growth up to 36%. The effect of FA was not significant. The response to a particular stress, including the effect on PAL activation, was enhanced by simultaneous application of the two stresses. PAL transcription was not correlated with the increase of PAL activity. Exposure to UV-B, FA, and combined UV-B and FA was detrimental to both genotypes but to different extents. The response was not correlated with the genotype of cold and disease sensitivity. PAL activity and its transcription seem to be involved in UV and allelochemical stress, but not related to the plants' tolerance of these stresses.
3
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Post-recovery assessment of UV-B irradiation effects in oilseed rape plants

84%
Skorska E.
Rośliny Oleiste - Oilseed Crops
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1999
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tom 20
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nr 1
4

Effect of short-time UV-B irradiation on photosynthetic primary reactions of Cucumis sativus and Mentha piperita leaves

84%
Skorska E., Murkowski A., Wencierska M.
Acta Physiologiae Plantarum
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2007
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tom 29
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nr 1 Suppl.
5

Impact of elevated ultraviolet-B irradiation on cress leaves under controlled environmental conditions

84%
Svegzdiene D., Rakleviciene D., Koryznienc D.
Acta Physiologiae Plantarum
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2007
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tom 29
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nr 1 Suppl.
6
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Effect of UV-B radiation on antioxidative enzyme activity in cucumber cotyledons

84%
Rybus-Zajac M., Kubis J.
Acta Biologica Cracoviensia. Series Botanica
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2010
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tom 52
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nr 2
7

Effects of an enhanced ultraviolet-B-irradiation on photosynthetic apparatus of several forest coniferous tree species from different locations

84%
Robakowski P., Laitat E.
Acta Physiologiae Plantarum
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1999
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tom 21
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nr 3
8
Content available remote

Calluna vulgaris extract modulates NF-kappaB/ERK signalling pathway and matrix metalloproteinase expression in SKH-1 hairless mice skin exposed to ultraviolet B irradiation

67%
Filip G. A., Postescu I. D., Tatomir C., Muresan A., Clichici S.
Journal of Physiology and Pharmacology
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2012
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tom 63
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nr 4
9

Fluvastatin increases tyrosinase synthesis induced by UVB irradiation of B16F10 melanoma cells

67%
Galus R., Sajjad E., Niderla J., Borowska K., Wlodarski K., Wlodarski P., Jozwiak J.
Folia Histochemica et Cytobiologica
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2009
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tom 47
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nr 3
10
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Long wave UV-B radiation and Asahi SL modify flavonoid content and radical scavenging activity of Zea mays var. saccharata leaves

67%
Skorska E., Grzeszczuk M., Baranska M., Wojcik-Stopczynska B.
Acta Biologica Cracoviensia. Series Botanica
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2019
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tom 61
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nr 1
11

Effects of UV-B irradiation on growth, survival, pigmentation and nitrogen metabolism enzymes in cyanobacteria

67%
Sinha R. P., Kumar H. D., Kumar A., Hader D. P.
Acta Protozoologica
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1995
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tom 34
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nr 3
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