Perchlorate content of plant foliage reflects a wide range of species-dependent accumulation but not ozone-induced biosynthesis

Grantz, David A.; Burkey, Kent O.; Jackson, W. Andrew; Vu, H.‐B.; McGrath, M. T.; Harvey, G.

doi:10.1016/j.envpol.2013.03.048

Cited by 7 publications

(26 citation statements)

References 42 publications

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“…Suyunuo, IR65598-112-2, and khazar showed the greatest decrease, and gannuoxiang was less affected. A number of studies also have documented significant differences in ClO 4 bioaccumulation ability among species [19,21,23] or genotypes within the same species [24,25]. In our previous study [21], significant differences were also observed in growth inhibition among 4 wetland plants by ClO 4 -.…”

Section: Perchlorate Phytotoxicity To Different Rice Varietiesmentioning

confidence: 55%

“…With the potential for food crops to be a significant source of ClO 4 exposure in humans, and because phytoremediation has been suggested as a promising remediation option, a mechanistic understanding of perchlorate's phytotoxicity is warranted. According to some previous studies, the potential for ClO 4 accumulation in plants is not only species-dependent [19,23] but also genotype-dependent [24,25]. According to some previous studies, the potential for ClO 4 accumulation in plants is not only species-dependent [19,23] but also genotype-dependent [24,25].…”

Section: Introductionmentioning

confidence: 94%

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Varietal differences in the growth of rice seedlings exposed to perchlorate and their antioxidative defense mechanisms

Chen

et al. 2015

Enviro Toxic and Chemistry

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A hydroponic experiment was conducted to investigate perchlorate (ClO4 (-) ) phytotoxicity in different rice varieties. Considerable variations were observed when 24 rice varieties were treated with ClO4 (-) . The shoot height, root length, and biomass of most varieties were significantly reduced by ClO4 (-) . The roots were more sensitive than the shoots. Hierarchical clustering analysis demonstrated primarily 4 groups: ClO4 (-) -sensitive, medium ClO4 (-) -sensitive, medium ClO4 (-) tolerant, and ClO4 (-) -tolerant. Gannuoxiang (a ClO4 (-) -tolerant variety) and IR65598-112-2 (a ClO4 (-) -sensitive variety) were chosen to explore their antioxidant response when exposed to 0.2 mmol/L, 2.0 mmol/L, and 4.0 mmol/L ClO4 (-) . The results showed that the activities of superoxide dismutase and catalase increased in the shoots and roots of gannuoxiang with increasing doses of ClO4 (-) , but both of them decreased at higher concentrations of ClO4 (-) in IR65598-112-2. The addition of ClO4 (-) led to a significant increase in peroxidase activities for both of the varieties, whereas the increase was more pronounced in gannuoxiang than in IR65598-112-2. No significant difference was found in malondialdehyde (MDA) contents in gannuoxiang, whereas the addition of ClO4 (-) increased the MDA level significantly in IR65598-112-2. The results indicated that gannuoxiang has higher activities of antioxidant enzymes than IR65598-112-2 to cope with oxidative damage caused by ClO4 (-) stress, which may be the main cause of its high tolerance.

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Section: Perchlorate Phytotoxicity To Different Rice Varietiesmentioning

confidence: 55%

Section: Introductionmentioning

confidence: 94%

Varietal differences in the growth of rice seedlings exposed to perchlorate and their antioxidative defense mechanisms

Chen

et al. 2015

Enviro Toxic and Chemistry

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“…Many studies have reported significant differences regarding the perchlorate accumulation among species [18,[23][24][25][26] or among genotypes within the same species [27]. These differences are of great interest to agriculture.…”

Section: Perchlorate Accumulationmentioning

confidence: 99%

“…As an oxidizer, perchlorate may also cause oxidative stress to rice plants. Some previous field and laboratory studies also show the ability for perchlorate accumulation is species-dependent [23][24][25][26] and genotype-dependent [27]. Rice (Oryza sativa L.) is one of the major food crops in many countries and there are many cultivars or varieties in the world.…”

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confidence: 99%

Differential Responses of Two Rice Varieties to Perchlorate Stress

Chen¹,

He²,

Gao³

et al. 2015

Pol. J. Environ. Stud.

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“…Ozone is of particular interest with respect to ecosystems and vegetation. The potential contribution of O 3 –exposed vegetation and soil to the source profile remains to be fully characterized (Grantz et al, 2014). Current and anticipated levels of tropospheric O 3 cause direct damage to vegetation (Booker et al, 2009).…”

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confidence: 99%

High Ozone Increases Soil Perchlorate but Does Not Affect Foliar Perchlorate Content

Grantz

Jackson

et al. 2014

J. Environ. Qual.

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Ozone (O) is implicated in the natural source inventory of ClO, a hydrophilic salt that migrates to groundwater and interferes with the uptake of iodide in mammals, including humans. Tropospheric O is elevated in many urban and some rural areas in the United States and globally. We previously showed that controlled O exposure at near-ambient concentrations (up to 114 nL L, 12-h mean) did not increase foliar ClO. Under laboratory conditions, O has been shown to oxidize Cl to ClO. Plant tissues contain Cl and exhibit responses to O invoking redox reactions. As higher levels of O are associated with stratospheric incursion and with developing megacities, we have hypothesized that exposure of vegetation to such elevated O may increase foliar ClO. This would contribute to ClO in environments without obvious point sources. At these high O concentrations (up to 204 nL L, 12-h mean; 320 nL L maximum), we demonstrated an increase in the ClO concentration in surface soil that was linearly related to the O concentration. There was no relationship of foliar ClO with O exposure or dose (stomatal uptake). Accumulation of ClO varied among species at low O, but this was not related to soil surface ClO or to foliar ClO concentrations following exposure to O. These data extend our previous conclusions to the highest levels of plausible O exposure, that tropospheric O contributes to environmental ClO through interaction with the soil but not through increased foliar ClO.

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Perchlorate content of plant foliage reflects a wide range of species-dependent accumulation but not ozone-induced biosynthesis

Cited by 7 publications

References 42 publications

Varietal differences in the growth of rice seedlings exposed to perchlorate and their antioxidative defense mechanisms

Varietal differences in the growth of rice seedlings exposed to perchlorate and their antioxidative defense mechanisms

Differential Responses of Two Rice Varieties to Perchlorate Stress

High Ozone Increases Soil Perchlorate but Does Not Affect Foliar Perchlorate Content

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