Intraspecific responses of 188 rice cultivars to enhanced UVB radiation

Dai, Quijie; Peng, Shaobing; Chavez, Arlene Q.; Vergara, B. S.

doi:10.1016/0098-8472(94)90026-4

Cited by 107 publications

(51 citation statements)

References 14 publications

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“…A significant positive correlation between leaf N mass and % changes of GS activities (r = 0.928, n = 6, p<0.01) was observed. A similar conclusion was drawn by Dai et al (1994) and Niu et al (2007). The increase in activities of glutamine synthetase could improve N metabolism and amino acid assimilation.…”

Section: Uv-b Radiation and N Metabolismssupporting

confidence: 73%

RESPONSES IN NITROGEN MASS AND NITROGEN METABOLISM OF WILD SUGARCANE (<I>SACCHARUM SPONTANEUM</I> L.) CLONES TO ENHANCED UV-B RADIATION UNDER FIELD CONDITIONS

Zu¹,

Li²,

Wang³

et al. 2013

American Journal of Environmental Sciences

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Field experiments were conducted to evaluate effects of enhanced UV-B radiation (280-315 nm) on intraspecific responses in nitrogen mass and nitrogen metabolism of six wild sugarcane (Saccharum spontaneum L.) clones. The clones were collected from original sites with different altitudes (4-1780 m above sea-level) and latitudes (18-38°N). The supplemental UV-B radiation was 5.00 kJ·m −2 , simulating a depletion of 20% stratospheric ozone. Out of the six tested wild sugarcane clones, available Nitrogen (N) contents in soil and N contents in leaves of four wild sugarcane clones decreased significantly. Leaf biomass and leaf N mass of six wild sugarcane clones significantly increased. UV-B radiation significantly decreased N contents and increased biomass and N mass in stems of six wild sugarcane clones. Contents of free amino acid of two wild sugarcane clones (92-11 and 92-36) significantly decreased, whilst that of clones 83-193 and II91-5 significantly increased. Total protein contents of three wild sugarcane clones significantly decreased, whilst that of clone 90-15 significantly increased. Nitrate reductase activities of two clones (92-11 and 90-15) significantly decreased, whilst that of four clones significantly increased. Glutamine synthetase activities of two clones (92-11 and 90-15) significantly increased, while that of clones 83-193 significantly decreased. UV-B radiation might change stem biomass, resulting in changes in N mass in stem and leaves. Results indicate that intraspecific responses in N mass and N metabolism of six wild sugarcane (S. spontaneum) clones differing in UV sensitivity to enhanced UV-B radiation exist under field conditions.

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Section: Uv-b Radiation and N Metabolismssupporting

confidence: 73%

RESPONSES IN NITROGEN MASS AND NITROGEN METABOLISM OF WILD SUGARCANE (<I>SACCHARUM SPONTANEUM</I> L.) CLONES TO ENHANCED UV-B RADIATION UNDER FIELD CONDITIONS

Zu¹,

Li²,

Wang³

et al. 2013

American Journal of Environmental Sciences

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“…It is sensitive to UV-B radiation. Previous studies showed that UV-B irradiation treatment led to a significant reduction in the plant height of rice, the content of total nitrogen, chlorophyll, and soluble protein; and the activity of Rubisco (EC 4.1.1.39) and antioxidant enzymes in the leaves of rice (Dai et al 1994;Hidema et al 1996;Lin et al 1999;Jain et al 2004).…”

Section: Introductionmentioning

confidence: 96%

UV-induced differential gene expression in rice cultivars analyzed by SSH

Fang

Zhang

et al. 2009

Plant Growth Regul

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The differences in gene expression between two rice genotypes-the ultraviolet-B (UV-B)-resistant cultivar Lemont and the UV-B-sensitive cultivar Dular-in response to irradiation with UV-B were studied. Suppression subtractive hybridization and real-time quantitative reverse transcriptase polymerase chain reaction were used in the analysis. The results showed that enhanced UV-B radiation could induce differential expression of the genes related to defense response. The expression of genes encoding HECT domain-containing protein, thylakoidbound ascorbate peroxidase, receptor-like protein kinase, Rad6 (ubiquitin carrier protein), phenylalanine ammonialyase, 4-coumarate: CoA ligase and chalcone synthase was up-regulated to different extents in the two rice cultivars: The cultivar Lemont exhibited a higher increase in the gene expression compared with the cultivar Dular. A large difference was found in the expression pattern of the universal stress protein (USP): showing down-regulation in Dular but up-regulation in Lemont. Hence exposure to UV-B radiation has a significant effect on gene expression in rice. In response to UV exposure, a molecular response is initially induced in different UV-B-resistant rice cultivars. This response may activate secondary metabolic pathways, in turn increase the synthesis of UV-protective substances (flavonoids) to prevent UV-B damage and induce the transcription of the relevant mRNAs for repairing the damaged DNA.

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“…These increased UV-B levels are expected to peak about the turn of the century and gradually recover over the following 50 yr (Madronich et al 1995). While there is ample documentation that enhanced UV-B can lead to less total biomass production in some species (Tevini & Teramura 1989;Caldwell et al 1995), enhanced UV-B fails to reduce biomass in other species (Barnes et al 1988;Tevini & Teramura 1989;Sinclair et al 1990), and even stimulates biomass production in some cases Teramura et al 1991;Sullivan et al 1992;Ziska et al 1992;Dai et al 1994;Musil & Wand 1994). Patterns of biomass allocation between aboveground and belowground structures (Teramura et al 1991;Ziska et al 1993; Barnes et al 1993), as well as among different aboveground parts (Teramura et al 1991; Barnes et al 1988Barnes et al , 1990Barnes et al , 1993, can be shifted following exposure to enhanced UV-B, although these shifts are quite variable.…”

Section: Introductionmentioning

confidence: 99%

“…Patterns of biomass allocation between aboveground and belowground structures (Teramura et al 1991;Ziska et al 1993; Barnes et al 1993), as well as among different aboveground parts (Teramura et al 1991; Barnes et al 1988Barnes et al , 1990Barnes et al , 1993, can be shifted following exposure to enhanced UV-B, although these shifts are quite variable. For example, in three separate studies comparing several rice (Oryza sativa) cultivars (Teramura et al 1991; Barnes et al 1993; Dai et al 1994), researchers found that enhanced UV-B caused some culitvars to produce less biomass, while other cultivars produced more biomass. These researchers also found shifts in biomass partitioning, and that the direction of these shifts varied among cultivars.…”

Section: Introductionmentioning

confidence: 99%

Influence of enhanced UV-B radiation on biomass allocation and pigment concentrations in leaves and reproductive structures of greenhouse-grown Brassica rapa

Day

Demchik

1996

Vegetatio

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We assessed the effects of enhanced ultraviolet-B radiation (UV-B; 280-320 nm) on biomass allocation to roots, shoots, leaves and flowers in the annual Brassica rapa. In addition, we investigated how concentrations of chlorophyll and UV-B-absorbing compounds in leaves, ovaries and pollen changed in response to enhanced UV-B. Plants were grown for 38 d in a greenhouse under lampbanks providing daily biologically effective UV-B doses equivalent to those under ambient mid-March stratospheric ozone levels or 16% ('low-enhanced UV-B') or 32% ('high-enhanced UV-B') ozone depletion levels for Morgantown, WV, USA. Total and aboveground biomass of plants was less under low-enhanced UV-B, but similar to ambient controls under high-enhanced UV-B. Concentrations of UV-B-absorbing compounds in leaves (area basis) increased under high-enhanced UV-B by about 20%, but were similar to ambient controls under low-enhanced UV-B. More effective protection due to higher screening-compound concentrations in plants under high-enhanced UV-B may explain why biomass production was not reduced. Plants under high-enhanced UV-B also had more reproductive biomass and produced more flowers, and had less root mass, than plants under ambient or low-enhanced UV-B. Concentrations of leaf total chlorophyll were not affected by UV-B treatment. While UV-B treatment had no affect on concentrations of UV-B-absorbing compounds in ovaries, concentrations in pollen from plants under both enhanced-UV-B treatments were >40% greater than ambient controls.

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Intraspecific responses of 188 rice cultivars to enhanced UVB radiation

Cited by 107 publications

References 14 publications

RESPONSES IN NITROGEN MASS AND NITROGEN METABOLISM OF WILD SUGARCANE (<I>SACCHARUM SPONTANEUM</I> L.) CLONES TO ENHANCED UV-B RADIATION UNDER FIELD CONDITIONS

RESPONSES IN NITROGEN MASS AND NITROGEN METABOLISM OF WILD SUGARCANE (<I>SACCHARUM SPONTANEUM</I> L.) CLONES TO ENHANCED UV-B RADIATION UNDER FIELD CONDITIONS

UV-induced differential gene expression in rice cultivars analyzed by SSH

Influence of enhanced UV-B radiation on biomass allocation and pigment concentrations in leaves and reproductive structures of greenhouse-grown Brassica rapa

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