Growth response in radish to sequential and simultaneous exposures of NO2 and SO2

Hogsett, William E.; Holman, Steven R.; Gumpertz, Marcia L.; Tingey, David T.

doi:10.1016/0143-1471(84)90140-5

Cited by 12 publications

(4 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1984), including Phaseolus vulgaris (Ito et al, 1985). Both are constituents of photochemical 'smog', and Studies investigating biochemical changes which in many regions concentrations of these pollutants underlie the detrimental effects of NOg, in comvary during the day in patterns that result more in bination with other pollutants, have shown that the sequential than in simultaneous exposures (Lefohn nitrogen metabolism of polluted plants may be &Tingey, 1984;Lefohn e/a/., 1987). Whilst there is altered (Rowland, Murray & Wellburn, 1985; Wella considerable amount of information available about burn, 1990).…”

mentioning

confidence: 99%

Response of nitrogen metabolism in beans (Phaseolus vulgaris L.) after exposure to ozone and nitrogen dioxide, alone and in sequence

Bender¹,

Weigel²,

Jäger³

1991

New Phytologist

View full text Add to dashboard Cite

summary Bush bean (Phaseolus vulgaris L.) plants were exposed to low levels of ozone (O3) and/or nitrogen dioxide (NO2) in open‐top chambers during the growing seasons of 1988 and 1989. Treatments consisted of charcoal‐filtered (CF) air, and CF air enriched with either O3 (50–60 nll −1), NO2 (30–40 nll−1) or both gases. A daily sequential exposure, O2 followed by NO2, was used in each year in the combined treatment: O2 was added for 8 h d−1 from 08.00 h until 16.00 h, and NO2 for 16 h d−1 from 16.00 h until 08.00 h. Growth variables and key enzymes of N assimilation in leaves were investigated during vegetative growth and at anthesis. Pollutant effects varied between years. No significant effects were found in 1988. In 1989 NO2, alone or in sequential exposure with O3+, increased leaf dry weight and total biomass until anthesis. Moreover, there was a parallel increase in the extractable activity of both nitrate and nitrite reductase in the NO2 treatments during vegetative growth, while glutamine synthetase and glutamate dehydrogenase were only increased by sequential exposure to O3+ NO2. In contrast, during anthesis the activities of nitrite reductase and glutamine synthetase were lowest in leaves sequentially exposed to O3+ NO2. Ozone alone had very little effect on N metabolism but suppressed growth during anthesis. At pod maturity, the lowest leaf dry weight and leaf area occurred in plants exposed to the sequential combination of O3+ NO2, but yield (pod weight) was not significantly affected by any of the pollutant treatments. It is concluded that chronic exposure especially to the sequence O3−NO2 reduced the capacity of the plants for N assimilation. The observed shift in nitrogen metabolism during the plants' development may have contributed to the adverse effects of the sequential treatment O3+ NO2 on growth variables at the end of the exposure period.

show abstract

mentioning

confidence: 99%

Response of nitrogen metabolism in beans (Phaseolus vulgaris L.) after exposure to ozone and nitrogen dioxide, alone and in sequence

Bender¹,

Weigel²,

Jäger³

1991

New Phytologist

View full text Add to dashboard Cite

show abstract

“…The exposure chambers had an average day and night temperatures of 29° ± 1.5°C and 19° ± 0.8°; average light intensity in the chambers was 46% less than ambient. Dispensing and monitoring of the gaseous pollutants as well as calibration of the monitors was described previously (3).…”

Section: Methodsmentioning

confidence: 99%

Growth Response in Spinach to Sequential and Simultaneous Exposure to NO2 and SO2

Hogsett

Gumpertz

Holman

et al. 1984

J. Amer. Soc. Hort. Sci.

View full text Add to dashboard Cite

Spinach (Spinacia oleracea L.) was exposed intermittently to NO2 and SO2 (2 hours/week; 0.8 or 1.5 ppm) in a simultaneous or sequential fashion over the 42-day growth period. Nighttime simultaneous exposure to NO2 and SO2 reduced growth and altered assimilate partitioning to the root. The relative growth rate of total plant and root was reduced significantly below controls early in the growth period. In contrast, neither daytime exposure to the pollutant mixture nor sequential exposure to the 2 pollutants affected growth.

show abstract

“…The sensitivity of plants to certain pollutants may be a bioindicators for the content of phytotoxic gases in the atmosphere (Bediet al, 1982;Hogsett et al, 1984). The species used, As espécies utilizadas, cited as sensitive SO 2 , showed symptoms of chlorosis in the leaves of plants growing to fifty and nine meters of pollution source.…”

Section: Confidencementioning

confidence: 99%

Efeito Da Poluição Por Dióxido De Enxofre (So2) Sobre Bioindicadores Hortícolas

Rodrigues

Cunha

Martins

et al. 2014

Revista Internacional De Ciências

View full text Add to dashboard Cite

Carrot and turnip Plants showed fresh and dry weights similar when grown in the area next to the industry. However, plants of two species, cultivated in the fifty and three hundred feet away from the polluting source, showed reduced growth and consequently reduction of fresh and dry weights. Plant growth of carrot and turnip, measured by weight fresh, proved to be different between the dots next to the industry and to the control station to ten kilometers. Growth increased with the distance, and as a result due to the topography, with the altitude of the place of cultivation of plants. The dry weight showed large variations in all species and between seasons. There has been a reduction of 87.4 between dry weight of the plants growing in season 2 with the control. The time factor also exerted influence on the effect of industrial emission on the growth and development of plants. The species growing in season 1, at the same industry-level, and 2 station, located 122 m above the level of the industry, however, in the prevailing wind direction, showed greater reduction in growth, based on fresh and dry weights. Weather conditions such as wind speed and direction and stagnant area, associated with the topographical conformation, can increase the effects of toxic agents in the atmosphere over the plant ecosystem. The region where the textile industry lies presents conditions that favor the pollute effect.

show abstract

Growth response in radish to sequential and simultaneous exposures of NO2 and SO2

Cited by 12 publications

References 33 publications

Response of nitrogen metabolism in beans (Phaseolus vulgaris L.) after exposure to ozone and nitrogen dioxide, alone and in sequence

Response of nitrogen metabolism in beans (Phaseolus vulgaris L.) after exposure to ozone and nitrogen dioxide, alone and in sequence

Growth Response in Spinach to Sequential and Simultaneous Exposure to NO2 and SO2

Efeito Da Poluição Por Dióxido De Enxofre (So2) Sobre Bioindicadores Hortícolas

Contact Info

Product

Resources

About