Response of oxidative stress defense systems in rice (Oryza sativa) leaves with supplemental UV-B radiation

Dai, Qi; Yan, Binbin; Huang, Shaobai; Liu, Xiaozhong; Peng, Shaobing; Miranda, M. Lourdes L.; Chavez, Arlene Q.; Vergara, B. S.; Olszyk, David M.

doi:10.1034/j.1399-3054.1997.1010207.x

Cited by 33 publications

(44 citation statements)

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“…Similarly, several studies have reported that exposure of plants to UV radiation resulted in a marked decrease in fresh mass and protein content (Agrawal 1992;Nasibi and M-Kalantari 2005). It has been reported that a reduction in fresh mass under UV radiation might be related to the enhancement of ROS generation (Mahdavian et al 2008) and hence to the destruction of plasma membranes (Dai et al 1997;Selvakumar 2008). Thus, the reduction in biomass in UV-treated Azolla plants might be related to a decrease in water absorption resulting from the destruction of plasma membranes and proteins due to generation of ROS.…”

Section: Resultsmentioning

confidence: 99%

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The ameliorative effect of selenium on Azolla caroliniana grown under UV-B stress

Mostafa

Hassan

2015

phyto

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Exposure of Azolla plants to UV-B radiation for 6 h resulted in a decrease in biomass and relative growth rate (RGR), which coincided with an increase in doubling time (DT) as compared with the control. Also, the protein content decreased. On the other hand, hydrogen peroxyde (H 2 O 2 ) and malondialdehyde (MDA) accumulated significantly in UV-treated Azolla plants. Conversely, the addition of selenium (Se) at 1 ppm resulted in a significant increase in biomass and protein content of untreated and UV-treated Azolla plants, and a significant reduction in both H 2 O 2 and MDA. Moreover, the addition of Se to UV-treated and untreated Azolla plants resulted in a significant increase in total ascorbate and total glutathione (GSH) contents compared with the control and UV-stressed Azolla plants. Also, glutathione redox potential (GSH/TG) increased significantly in UV-treated Azolla plants in the presence of Se. There also was a significant increase (38%) in ascorbate peroxidase (APX) activity in UV-treated plants compared with the control. APX activity in the presence of Se did not change significantly compared with the control. Glutathione reductase (GR) activity increased significantly in UV-treated Azolla, while glutathione peroxidase (GSH-PX) activity did not. On the other hand, both GSH-PX and GR activity in untreated and UV-treated Azolla plants were significantly enhanced by the application of Se to the nutrient media at a concentration of 1 ppm. Therefore, we can conclude that Se protects Azolla plants from UV-B stress.

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Section: Resultsmentioning

confidence: 99%

“…Ultraviolet radiation also produces oxidative stress that arises from the deleterious effects of active oxygen species (Costa et al 2002;Ibrahim and Mostafa 2007) that react with lipids, pigments, proteins and nucleic acid (Dai et al 1997;Nasibi and M-Kalantari 2005).…”

Section: Introductionmentioning

confidence: 99%

The ameliorative effect of selenium on Azolla caroliniana grown under UV-B stress

Mostafa

Hassan

2015

phyto

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“…UV-B radiation stimulates production of reactive oxygen species such as singlet oxygen, superoxide radicals, hydroxyl radicals, and H 2 O 2 ; these compounds may be key regulators of UV radiationinduced signaling pathways (18,19). Alternatively UV-B radiation may activate receptors directly as exemplified by studies of systemin receptor in L. peruvianum (20).…”

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confidence: 99%

Analysis of Leaf Proteome after UV-B Irradiation in Maize Lines Differing in Sensitivity

Casati

Zhang

Burlingame

et al. 2005

Molecular & Cellular Proteomics

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“…UV-B induces DNA lesions such as cyclobutane pyrimidine dimers (CPDs), pyrimidine (6-4) pyrimidone dimers [(6-4) photoproducts], and some minor lesions (Jagger, 1985;Umlas et al, 1985). Various types of DNA lesion are also induced by reactive oxygen species, which are generated by exposure to UV-B (Dai et al, 1997;Hidge et al, 2002), air pollutants such as ozone (Floyd et al, 1989), ionizing radiation, and many chemicals (Friedberg, 1995). In several organisms, DNA lesions can be repaired by various mechanisms, such as photorepair, excision repair (dark repair), and recombination repair (for review, see Hays, 2002).…”

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confidence: 99%

Roles of Arabidopsis AtREV1 and AtREV7 in Translesion Synthesis

et al. 2005

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Plants have mechanisms for repairing and tolerating detrimental effects by various DNA damaging agents. A tolerance pathway that has been predicted to be present in higher plants is translesion synthesis (TLS), which is catalyzed by polymerases. In Arabidopsis (Arabidopsis thaliana), however, the only gene known to be involved in TLS is the Arabidopsis homolog of REV3, AtREV3, which is a putative catalytic subunit of Arabidopsis DNA polymerase z. A disrupted mutant of AtREV3, rev3, was previously found to be highly sensitive to ultraviolet-B (UV-B) and various DNA damaging agents. REV1 and REV7 are thought to be components of translesion synthesis in plants. In this study, we identified the Arabidopsis homologs of REV1 and REV7 (AtREV1 and AtREV7). Several mutants carrying disrupted AtREV1 and AtREV7 genes were isolated from Arabidopsis T-DNA-inserted lines. An AtREV1-disrupted mutant, rev1, was found to be moderately sensitive to UV-B and DNA cross-linkers. A rev1rev3 double mutant, like rev3, showed high sensitivity to UV-B, g-rays, and DNA crosslinkers. An AtREV7-disrupted mutant, rev7, was possibly sensitive to cis-diamminedichloroplatinum(II), a kind of DNA crosslinker, but it was not sensitive to acute UV-B and g-ray irradiation. On the other hand, the aerial growth of rev7, like the aerial growth of rev1 and rev3, was inhibited by long-term UV-B. These results suggest that a TLS mechanism exists in a higher plant and show that AtREV1 and AtREV7 have important roles in tolerating exposure to DNA-damaging agents.

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Response of oxidative stress defense systems in rice (Oryza sativa) leaves with supplemental UV-B radiation

Cited by 33 publications

References 0 publications

The ameliorative effect of selenium on Azolla caroliniana grown under UV-B stress

The ameliorative effect of selenium on Azolla caroliniana grown under UV-B stress

Analysis of Leaf Proteome after UV-B Irradiation in Maize Lines Differing in Sensitivity

Roles of Arabidopsis AtREV1 and AtREV7 in Translesion Synthesis

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